JP2017227565A - Dam construction survey photographing method, dam construction finished shape management drawing generation method using the same, concrete installation amount calculation method, finished shape management drawing generation system, concrete installation amount calculation system, and finished shape management drawing generation assistance program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dam construction survey photographing method suitable for highly accurately photographing and surveying a rock adhesive surface at low cost.SOLUTION: Right bank first and second reference points 501a and 501b are set in a region 550 to be photographed including a bedrock surface after drilling in a preset drilling range of a surface protection member that covers the bedrock surface by using the upper corners of two molds 301R and 302R installed at positions opposed to the bedrock surface among molds installed on the upstream side and the downstream side of a dam bank body. In addition, a third reference point 501c is set at a roughly intermediate point between the reference points 501a and 501b and at a prescribed height position on the bedrock surface. A plurality of images of the region 550 to be photographed after the setting of the reference points are photographed by a digital camera DC from a plurality of different photographing positions on the ground or the existing part of the dam bank body, the plurality of images taken from each of the photographing positions, so that parts of the photographing region can overlap among the plurality of adjacent photographed images at photographing positions.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a survey photography method for dam construction, a shape control chart generation method for dam construction using the same, a concrete placement amount calculation method, a finish control chart generation system, a concrete placement amount calculation system, and The present invention relates to a production control chart generation support program.

  Conventionally, in the construction of concrete dams, the concrete placement section that includes the part of the dam basin that is rocked with the foundation rock (rocking part) is 3 of the rock surface for every lift for which concrete is placed. The dimensional shape is surveyed in advance using a surveying machine such as TS (Total Station). This is because, in a section including a rocky portion, the shape of the rock surface (uneven shape) varies depending on the position, and the amount of concrete placement varies depending on the position. In other words, the contractor surveys the shape of the rock surface on which the dam foundation is deposited before each concrete placement to confirm and confirm the accuracy of concrete placement. The amount is being calculated.

Conventionally, a technique for performing photogrammetry using a UAV (unmanned aerial vehicle) has been disclosed (see, for example, Patent Document 1). Patent Document 1 describes that photogrammetry of a structure such as a dam is performed from above using UAV.
In general, in photogrammetry, a subject area is photographed by dividing it into a plurality of photographed images from a plurality of different positions, and photographing is performed so that a part of the photographed region overlaps (wraps) between adjacent photographed images. . Then, from a plurality of photographed image data obtained by this photographing, a three-dimensional shape restoration technique and a photographing position estimation technique based on image processing such as SFM (Structure from motion) and SFIT (Scale-invariant feature transform) are used. Then, three-dimensional point cloud data of the imaging target area is generated. Furthermore, survey data is obtained by generating a TIN (triangulated irregular network) model from the generated 3D point cloud data using 3D CAD software.

JP-A-2015-145784

  By the way, in a surveying method using a surveying machine such as TS, there are problems that two or more people are required for surveying and surveying costs are increased because surveying is performed for each lift. Also, in surveying machines such as TS, it is difficult to place a target such as a prism at a high place, so the rock surface that rocks the side of the dam frame (hereinafter sometimes referred to as “rocking surface”) However, it was difficult to survey multiple lifts at once.

  On the other hand, in the photogrammetry method using UAV, it is possible to make one person necessary for the survey, and it is also possible to measure a plurality of lifts at once on the rock surface. However, the rock surface is covered with a surface protection member such as protective mortar in order to prevent weathering. Therefore, it is necessary to perform surveying on the rock formation surface after the surface protection member in a preset range (for example, a range corresponding to 5 to 6 lifts) is excavated. For this reason, it is necessary to skip the UAV every time the surface protection member is excavated, resulting in poor efficiency such as fuel consumption. In addition, the rock surface that rocks the side of the dam body is an inclined surface, and there are work machines and workers on the site at the time of surveying. It is difficult to shoot in the air.

Also, there is a technology for photogrammetrically surveying the rock formation surface to generate a finished shape control chart for the concrete placement section including the rock formation part of the dam pier and calculating the concrete placement amount of this section. It was not before.
Also, in order to generate a TIN model from 3D point cloud data using 3D CAD software, and to obtain the desired coordinate control chart by obtaining desired coordinate information, the operation of the 3D CAD software is performed. It needs to be familiar to some extent. For this reason, it is difficult for an operator who is not used to the operation.

Therefore, the present invention was made paying attention to such an unsolved problem of the conventional technology, and is suitable for dam construction suitable for photogrammetrically measuring a rock formation surface with low cost and high accuracy. A first object of the present invention is to provide a photogrammetry method for surveying, a generated shape control chart generation method for dam construction using the method, a concrete placement amount calculation method, a completed shape control chart generation system, and a concrete placement amount calculation system. It is said.
In addition, we provide a support chart generation support program that supports the operation of three-dimensional CAD software when generating a control chart of concrete placement section including the rock formation part of the dam pier using photogrammetry technology. The second purpose is to do this.

  In order to achieve the first object, a surveying photography method for dam construction according to the first embodiment of the present invention provides a three-dimensional shape of a rock surface that rocks the side surface of a dam body of a concrete dam. A surveying photography method for surveying a dam for surveying, wherein a predetermined excavation range of a surface protection member covering the rock surface is included in an imaging target region including a rock surface portion after excavation. A reference point setting step for setting one or more reference points whose dimensional coordinate information is known, and the shooting target area from the plurality of different shooting positions on the ground or the existing part of the dam body by the digital camera. A plurality of images, and a photographing step of obtaining a plurality of photographed images by photographing so that a part of the photographing region overlaps between adjacent photographed images, respectively, on the upstream side and the downstream side of the dam body Of the installed formwork Corners of the two mold installed in a position facing the serial rock surface is also utilized as a reference point to include a reference point of the three or more points on the imaging area.

  Moreover, in order to achieve the said 1st objective, the shape control chart production | generation method for dam construction which concerns on the 2nd form of this invention is the completed shape of the concrete placement section containing the rock formation part of a dam body. A method for generating a control chart for dam construction that generates a control chart for managing a dam, including the rock surface portion by using the surveying photography method for dam construction of the first embodiment. A rock surface photographing step for photographing the photographing target region, a plurality of photographed images of the photographing target region obtained by photographing in the rock surface photographing step, and a three-dimensional of the reference point set in the photographing target region A point cloud data generation step for generating three-dimensional point cloud data of the imaging target area based on the coordinate information; and a TIN model for generating a TIN (triangulated irregular network) model of the imaging target area based on the three-dimensional point cloud data Generating step, and A contour coordinate information extraction step for extracting contour coordinate information of a rock surface corresponding to the imaging target region from the IN model, the contour coordinate information extracted in the contour coordinate information extraction step, and an altitude corresponding to the contour coordinate information. And a shape control chart generating step of generating a shape control chart of the concrete placement section including the dam rock formation portion based on the coordinate information of the existing portion of the dam dam facing the rock surface portion.

  In order to achieve the first object, the concrete placement amount calculation method for dam construction according to the third aspect of the present invention is a concrete placement method for a concrete placement section including a rock formation portion of a dam pier. A concrete placement amount calculation method for calculating a placement amount, a rock surface photographing step of photographing a region to be photographed including the rock surface portion by using the photographic method for surveying for dam construction according to the first embodiment, 3 of the imaging target area based on a plurality of captured images of the imaging target area obtained by imaging in the rock surface imaging process and the three-dimensional coordinate information of the reference point set in the imaging target area. A point cloud data generating step for generating three-dimensional point cloud data, a TIN model generating step for generating a TIN (triangulated irregular network) model of the imaging target region based on the three-dimensional point cloud data, and the TIN model The contour coordinate information extraction step for extracting the contour coordinate information of the rock surface corresponding to the imaging target region, the contour coordinate information extracted in the contour coordinate information extraction step, and the height of the rock surface portion corresponding to the contour coordinate information And a placement amount calculation step of calculating the concrete placement amount of the concrete placement section including the dam rock formation portion based on the coordinate information of the existing portion of the dam dam body facing the dam.

  On the other hand, in order to achieve the first object, a completed control chart generation system according to the fourth aspect of the present invention is obtained by photographing with the survey photography method for dam construction of the first embodiment. A captured image data acquisition unit that acquires a plurality of captured image data, a reference point coordinate acquisition unit that acquires 3D coordinate information of the reference point, the plurality of captured image data and 3D coordinate information of the reference point And a TIN model generation unit that generates a TIN (triangulated irregular network) model of the imaging target region based on the three-dimensional point cloud data. A contour coordinate information extraction unit that extracts contour coordinate information of a rock surface corresponding to the imaging target region from the TIN model, and contour line coordinate information extracted by the contour coordinate information extraction unit. Corresponding to the coordinate information storage unit for storing the coordinate information of the existing part of the dam dam facing the rock surface portion at a high altitude, the contour coordinate information extracted by the contour coordinate information extracting unit, and the contour coordinate information Based on the coordinate information of the existing part of the dam body, a contour control diagram of the rock surface part and a sectional view of the existing part cut at the altitude position of the contour line were synthesized as a control chart of the dam rock formation part. A finished shape control chart generating section for generating a sectional view of the concrete placement section including the dam rock attachment section.

  Moreover, in order to achieve the said 1st objective, the concrete placement amount calculation system which concerns on the 5th aspect of this invention is image | photographed with the photography method for surveying for dam construction of the said 1st form. A captured image data acquisition unit that acquires a plurality of captured image data, a reference point coordinate acquisition unit that acquires 3D coordinate information of the reference point, the plurality of captured image data and 3D coordinate information of the reference point And a TIN model generation unit that generates a TIN (triangulated irregular network) model of the imaging target region based on the three-dimensional point cloud data. A contour coordinate information acquisition unit that acquires contour coordinate information of a rock surface portion corresponding to the imaging target region based on the TIN model, and the height of the rock surface corresponding to the contour coordinate information Based on the basin coordinate information storage unit for storing the coordinate information of the existing part of the dam dam facing the minute, the contour line coordinate information and the coordinate information of the existing part, A placement amount calculation unit that calculates a concrete placement amount.

  In order to achieve the second object described above, the resulting control chart generation support program according to the sixth aspect of the present invention is based on the three-dimensional point cloud data of the rock surface where the dam body is rocked. A prepared shape management chart generation support program for supporting screen operations of a three-dimensional CAD software for generating a generated shape control chart for managing a finished shape of a concrete placement section including a rock formation portion of a body, which is prepared in advance. The first operation is a series of operation input information for performing the screen operation of the 3D CAD software necessary to generate a TIN (triangulated irregular network) model of the rock surface using the 3D point cloud data. A first operation input step for inputting information to the three-dimensional CAD software, and a contour map after the three-dimensional CAD software generates the TIN model in response to a screen operation by inputting the first operation information. An altitude input accepting step for accepting an altitude input for extracting information; and determining that the altitude input is accepted, the three-dimensional CAD necessary for extracting contour line coordinate information corresponding to the input altitude from the TIN model A second operation input step of inputting second operation information, which is a series of operation input information for performing a software screen operation, to the three-dimensional CAD software, and the screen operation according to the input of the second operation information. After the contour coordinate information corresponding to the input altitude is extracted by the 3D CAD software, the contour image of the input altitude is the existing part of the dam ridge facing the rock surface portion at the altitude position of the contour image prepared in advance. Is combined with the cut cross-sectional image, and the shape control chart of the concrete placement section including the dam rock corresponding to the input height is generated. And a third operation input step for inputting third operation information, which is a series of operation input information for performing screen operations of the three-dimensional CAD software, to the three-dimensional CAD software. .

  According to the surveying photography method for dam construction according to the first aspect, the corners of the two molds at positions facing the rock surface are used as the reference points. Here, each formwork is accurately positioned by surveying. From this, it is possible to reduce the trouble of surveying the position of the reference point by using the position of the mold as the reference point. In addition, since it is configured to take a photograph from the ground or the existing part of the dam dam, it is possible to take a surveying photograph of the rocky surface at a lower cost than aerial photography using UAV. Moreover, since it is only necessary to take a picture, it is possible to survey a plurality of lifts at a time as compared with the survey using a conventional surveying machine.

  Moreover, according to the shape control chart generation method and the shape control chart generation system for dam construction according to the second to fifth aspects, from the photographed image photographed by the survey photography method of the first aspect Three-dimensional point group data is generated, a TIN model is generated from the three-dimensional point group data, and contour coordinate information of the rock formation surface is extracted from the TIN model. Furthermore, based on the coordinate information of the contour line and the coordinate information of the existing part of the advanced dam support corresponding to the contour line coordinate information, it is possible to generate a finished shape control chart for the concrete placement section including the dam rock It is. As a result, it is possible to obtain a highly accurate finished shape control chart at a low cost as compared with the case where survey data by a surveying machine such as TS is used.

Moreover, according to the concrete placement amount calculation method and concrete placement amount calculation system for dam construction according to the third and fifth aspects, the contour coordinates extracted by the same method as in the second and fourth aspects. Based on the information and the coordinate information of the existing part of the high-level dam body corresponding to the contour coordinate information, it is possible to calculate the concrete placement amount of the concrete placement section including the dam rock formation part. As a result, it is possible to calculate the concrete placement amount with high accuracy at a low cost as compared with the case where the survey data by the surveying machine such as TS is used.
In addition, according to the work management chart generation support program according to the sixth aspect, when using the 3D CAD software for generating the work management chart, the complicated screen operation of the 3D CAD software is automated or Since it becomes possible to semi-automate, even a worker who is not good at operating the three-dimensional CAD software can easily generate a finished shape control chart.

(A)-(d) is a figure for demonstrating the construction procedure of the gravity-type concrete dam which concerns on embodiment, and is the figure seen from the downstream of the river. It is the top view which looked at the dam body area under construction from the upper surface. It is a flowchart which shows the concrete placement procedure of the rock formation division using the photography method for surveying for dam construction which concerns on embodiment. (A)-(f) is a figure for demonstrating the flow of the concrete placement procedure of the rock formation division using the photography method for surveying for dam construction which concerns on embodiment, and is seen from the downstream of a river It is a figure. (A) is a top view for demonstrating the setting method of the reference point at the time of formwork installation, (b) is a figure which shows an example of the label | marker set as a reference point. (A) And (b) is a figure for demonstrating the imaging | photography method of the photography for surveying which concerns on embodiment. It is a top view for demonstrating the setting method of the reference point in a lift-up timing. It is a block diagram which shows the structure of the rocky part construction information generation system 1 which concerns on embodiment. It is a block diagram which shows an example of the hardware constitutions of the product shape information generation apparatus which concerns on embodiment. It is a block diagram which shows an example of a function structure of the product shape information generation apparatus which concerns on embodiment. It is a flowchart which shows an example of the process sequence of the product form management chart production | generation assistance process which concerns on embodiment. It is a flowchart which shows an example of the process sequence of the product form management chart production | generation process which concerns on embodiment. (A) is a figure which shows an example of 3D point cloud data, (b) is a figure which shows an example which affixed 3D point cloud data to the spot CAD drawing, (c) is a TIN model (D) is a figure which shows an example of a contour-line overhead view. (A)-(c) is a figure which shows the production | generation process of a completed shape control chart. It is a figure which shows an example of the working time taken from photography of the photo for surveying to generation of a shape control chart. It is a top view for demonstrating the other example of the setting method of the reference point at the time of formwork installation.

Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the vertical and horizontal dimensions and scales of members and parts are different from actual ones. Therefore, specific dimensions and scales should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.
Further, the following embodiments exemplify apparatuses and methods for embodying the technical idea of the present invention, and the technical idea of the present invention is the material, shape, structure, and arrangement of components. Etc. are not specified as follows. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

In this embodiment, the case where the present invention is applied to the construction of a gravity concrete dam will be described as an example.
Hereinafter, a part of the construction procedure of the gravity concrete dam will be roughly described. Here, in this embodiment, the case where the extended layer construction method is applied as a dam construction method will be described as an example.
(1) Excavate within the area of a dam site 100d indicated by a broken line in the ground 100 surrounding the river as shown in FIG. In addition, the surface sediments and weathered rocks of the exposed bedrock are removed. Thereby, as shown in FIG. 1 (b), the foundation ground 101 that supports the bottom surface of the dam body, the right bank foundation rock 102 that supports the right side surface of the dam body when viewed from the upstream side, and the left side surface of the dam body The left bank foundation bedrock 103 that supports is exposed. Further, grouting is performed to improve the strength, deformability, water shielding, and the like of the foundation ground 101, the right bank foundation rock 102, and the left bank foundation rock 103. In addition, the part shown with the broken line in FIG.1 (b) becomes the dam body area | region 104 which is an area | region where a dam body is constructed.

  (2) A protective mortar that is a surface protection member for preventing weathering of the rock mass is sprayed on the surfaces of the right bank foundation rock 102 and the left bank foundation rock 103. As a result, as shown in FIG. 1 (c), the right bank protection part 201 that covers the surface of the right bank foundation rock 102 and the left bank protection part 202 that covers the surface of the left bank foundation rock 103 are formed in the dam body region 104. .

(3) As shown in FIG. 1 (d) and FIG. 2, in this embodiment, a sliding formwork is installed for each of a plurality of placement sections that can be placed at once in the order of concrete placement planned in advance. To do. Hereinafter, each placement section may be referred to as a “small section”, and a plurality of placement sections (small sections) that can be placed at once may be referred to as a “large section”.
Specifically, as shown in FIG. 2, a downstream formwork 301 and an upstream formwork 302 (hereinafter simply referred to as “formwork 301 and 302”) are used as the dam support formwork respectively on the upstream side and the downstream side of the large section. May be abbreviated as). Here, the downstream formwork 301 rises diagonally toward the upstream side because the downstream surface of the dam ridge is an inclined surface. In addition, as shown in FIG. 2, the section divided by the broken line becomes a small section, and a large section is formed from a plurality of continuous small sections.

(4) Concrete is placed for each large section so as not to cause a lift difference between the sections in the inner region sandwiched between the molds 301 and 302. That is, in the extended layer method, concrete is cast in a planar shape.
(5) After completing the placement of the concrete for the height of the molds 301 and 302, the molds 301 and 302 are lifted up. Then, concrete is placed on the large section after the lift-up.
The above steps (3) to (5) are repeated, and in this embodiment, as shown in FIG. To the right bank. That is, concrete is cast in a planar shape from the left bank to the right bank for each large section that can be placed at a time. In this way, the dam body is constructed.

Here, in the construction of the gravitational concrete dam, after the molds 301 and 302 are installed or lifted up (also referred to as slide-up), the exact position (three-dimensional coordinates) of the mold 301 is measured by a surveying machine such as TS. Is done.
In addition, the concrete placement section including the rock formation portions with the right bank foundation rock 102 and the left bank foundation rock 103 of the dam body is composed of the right bank protection section 201 and the left bank protection section before the installation of the formwork 301 and 302 and before the lift up. A part of 202 is excavated. Specifically, a protective mortar within a preset range (for example, 5 to 6 lifts) is excavated to expose the rock surface that rocks the side surface of the dam body, that is, the rock surface.

After the rock surface is exposed, the molds 301 and 302 are placed in a concrete placement section (hereinafter sometimes referred to as “rock formation section”) including the rock surface and the rock formation portion of the dam body. After installation, measure the shape of the rock surface. If the molds 301 and 302 are already installed, the shape of the rock surface is measured before the molds 301 and 302 are lifted up. Furthermore, based on the survey results, an accurate concrete placement amount for one lift in the rock formation section is calculated, and concrete is placed in the corresponding rock formation section after the placement amount is determined in consultation with the orderer. To do.
Here, when surveying the rock surface, conventionally, the rock surface was surveyed for every lift by two or more workers using a surveying machine such as TS. On the other hand, in the present embodiment, a single operator measures a plurality of lifts at a time using photogrammetry with a digital camera.

Hereinafter, the concrete placement procedure of the rock formation section using the surveying photography method for dam construction according to the present embodiment will be described.
When the formwork is installed in the rock formation section or when the existing formwork is lifted up in the rock formation section, as shown in FIG. 3, first, the process proceeds to step S1.
In step S1, a protective mortar portion in a preset range is excavated before the mold is installed or lifted up. Thereafter, the process proceeds to step S2.
Here, the excavation range of the protective mortar is, for example, a range of M lifts (M is a natural number of 2 ≦ M <N), where N is the total number of lifts of the dam body (for example, N = 40). It should be noted that it is desirable to set M to 5 to 6 with 1 lift being 1.5 [m] in order to perform shooting accurately with the shooting specifications described later.

Specifically, in the present embodiment, as shown in FIG. 4A, for example, in the stage before the molds 301 and 302 are installed in the rock formation section on the right bank, FIG. 4B and FIG. 6A. As shown in Fig. 5, a range corresponding to 5 lifts is excavated from the protective mortar constituting the right bank protection unit 201.
By excavating the protective mortar, the right bank rock surface 102a, which is a portion where the dam dam of the right bank foundation rock 102 is deposited, is exposed. Similarly, when constructing the left bank side, before the form is installed or lifted up, for example, a protective mortar for 5 lifts of the left bank protection section 202 is excavated, and the dam basin of the left bank foundation bedrock 103 is rocked. The left bank rock surface 103a, which is a portion to be exposed, is exposed.
In step S2, three or more reference points are set in the imaging target region including the current imaging target rocking surface portion of the right bank rocking surface portion 102a or the left bank rocking surface portion 103a. Thereafter, the process proceeds to step S3.

  In the present embodiment, for example, as shown in FIGS. 4C and 5A, the right bank rocking surface 102a is in contact with the right bank rocking section RCR after the formwork is installed and before the concrete is placed. Two mold frame portions, that is, a downstream right mold frame portion 301R and an upstream right mold frame portion 302R, which are mold frame portions, are used as reference points. Specifically, the upper corners at the ends of the two mold parts 301R and 302R that are in contact with the right bank rocking surface 102a are used as the right bank first reference point 501a and the right bank second reference point 501b, respectively. At this time, in the present embodiment, for example, an anti-air sign 600 as shown in FIG.

On the other hand, in this embodiment, at the stage where the downstream right mold part 301R and the upstream right mold part 302R are lifted up after excavating the protective mortar, as shown in FIG. The upper corners of the ends of the frame portions 301R and 302R that are in contact with the right bank rock surface 102a are used as the right bank first reference point 501a and the right bank second reference point 501b, respectively. In addition, it is good also as a structure which uses the mold part 301R and 302R after lift-up as a reference point not only in this.
Here, the position of the formwork is measured in advance by surveying by a surveying machine such as TS (hereinafter, sometimes referred to as “formwork surveying”). Therefore, in this embodiment, the position of the formwork whose three-dimensional coordinates are known is used as a reference point.

  Furthermore, in the present embodiment, as shown in FIG. 5A, the position in the direction orthogonal to the dam axis is a substantially intermediate position between the right bank first reference point 501a and the right bank second reference point 501b, and the right bank rock landing A right bank third reference point 501c is set at an arbitrary height position on the surface portion 102a. This right bank third reference point 501c is set by installing an anti-air marking 600 in the same manner as other reference points. However, the exact position of the right bank third reference point 501c is unknown. Therefore, for example, a steel tape or the like is pulled from a location where the coordinate information of the formwork or the like is known, the length in the width direction and the height direction of the steel tape is measured, and this length is compared with the known coordinate information. To add and subtract. In addition to this method, it may be obtained by separately surveying with a surveying machine such as TS, or when the formwork is installed before taking a photograph or when the lift is raised, At that time, the position of the right bank third reference point 501c may be obtained.

On the other hand, in the present embodiment, at the stage of lifting the downstream right mold part 301R and the upstream right mold part 302R after excavating the protective mortar, as shown in FIG. 7, the right bank first reference point 501a and the right bank first The right bank third reference point 501c is set at an approximately intermediate position between the two reference points 501b and at an arbitrary height position on the right bank rock surface 102a.
Similarly, on the left bank side, as shown in FIG. 5A and FIG. 7, after installing the formwork in the left bank rocking section RCL or before lifting the existing formwork, the downstream left formwork section 301L and the upstream The upper corners at the ends of the side left formwork 302L that are in contact with the left bank rocking surface 103a are set to the left bank first reference point 502a and the left bank second reference point 502b, respectively. Further, the left bank third reference point 502c is set at an approximately intermediate position and at an arbitrary height position on the left bank rock surface 103a.

In step S3, an imaging target region including an exposed rock surface after excavation of the protective mortar and an anti-air sign 600 installed at the reference point position of the rock surface and the reference point position of the formwork is digitally converted. Take a picture with the camera. Thereafter, the process proceeds to step S4.
Here, in this embodiment, as shown in FIG. 4C and FIG. 6A, the area to be imaged is changed from the ground or on the concrete after curing (on the existing part of the dam dam) to the digital camera DC. Shoot by. That is, when the molds 301 and 302 are installed in the rock formation section, it is taken from the ground before the concrete is placed. When the molds 301 and 302 in the rock formation section are lifted up, after the concrete placement. So, take a picture from the existing part.

In the present embodiment, existing image processing software that employs a well-known SFM is used as an image processing technique for generating three-dimensional point cloud data from captured image data. Since the SFM matching process requires a photographed image having 10 million pixels or more in order to extract feature points, photographing is performed using a digital camera DC having 10 million effective pixels or more.
Also, as preparations before shooting, the shooting parameters are set. In this embodiment, from the survey data obtained by photogrammetry, the finished shape of the rock formation section is finally expressed by a three-dimensional model, and the concrete placement for each lift of the rock formation section is performed from the data of this completion form. Calculate the amount. Therefore, in this embodiment, the measurement accuracy is set to 2 [cm]. Specifically, in order to ensure the measurement accuracy of 2 [cm], the shooting specifications (focal length, shooting distance, etc.) are set so that the GSD (Ground Sample Distance) is 0.4 [cm] or less. Set.

Here, generally, the measurement accuracy can be obtained by setting the GSD to 1/5 of the target measurement accuracy (for example, 0.2 [cm] if the measurement accuracy is 1 [cm]).
After setting the shooting parameters, for example, as shown in FIGS. 6A and 6B, the shooting target area 550 on the right bank side is taken from a plurality of different shooting positions on the ground or the existing part of the dam ridge. With the digital camera DC, a plurality of images are shot at each shooting position. In addition, photographing is performed so that a part of the photographing region overlaps (wraps) between adjacent photographed images. As a result, a plurality of photographed images obtained by dividing the photographing target region 550 into a plurality of photographing regions are obtained. Hereinafter, this photographing method may be referred to as “stereo photographing”.

In the present embodiment, as shown in FIGS. 6A and 6B, the operator uses the digital camera DC held on the ground or on the existing part of the dam ridge, and the right bank rock landing surface. An image is taken from a position at a predetermined distance (for example, 10 [m] or less) from 102a.
Specifically, as shown in FIG. 6B, the operator moves from one side in the width direction of the right bank rocking surface portion 102a toward the other side while maintaining the shooting distance as much as possible. When the camera stops and stops, a plurality of images are shot while changing the shooting angle in the height direction as shown in FIG. For example, an operation of stopping by moving a predetermined distance (for example, 2 [m]) in the width direction and photographing a plurality of images at the stopped position is repeatedly performed from one side to the other side in the width direction.

Here, the overlap rate required for performing stereo matching with sufficient accuracy is an overlap rate of 60 [%] or more and a side wrap rate of 30 [%] or more. Therefore, in the example of FIG. 6B, photographing is performed so that the overlap rate is 80 [%] and the side wrap rate is 80 [%]. Of the imaging areas 560a to 560q shown in FIG. 6B, areas having the same frame type are imaging areas from the same imaging position.
Also, as shown in FIG. 6B, the imaging target area 550 includes right bank first to third reference points 501a to 501c, and is in any one of a plurality of imaging areas that are continuous in a lap state. Shoot so that these three reference points are always reflected. In the example of FIG. 6B, the right bank first reference point 501a is in the shooting areas 560g and 560n, the right bank second reference point 501b is in the shooting areas 560j and 560q, and the right bank third reference point 501c is in the shooting areas 560i and 560h. include. The left bank side will be photographed in the same manner as the right bank side.

In step S4, three-dimensional point cloud data of the photographing target region is generated from a plurality of photographed image data of the photographing target region obtained in step S3 by using image processing software for generating three-dimensional point cloud data. To do. Thereafter, the process proceeds to step S5.
In step S5, a completed shape control chart corresponding to the rock formation section included in the imaging target area is generated from the three-dimensional point cloud data generated in step S4 using three-dimensional CAD software. Thereafter, the process proceeds to step S6.

In step S6, the concrete placement amount required for placing concrete in the rock formation section for each lift is calculated based on the data of the completed shape control chart generated in step S5. Thereafter, the process proceeds to step S7. That is, the concrete placement amount VR or VL for each lift of the right bank rocking section RCR or the left bank rocking section RCL is calculated.
In step S7, if the formwork needs to be lifted up with respect to the rock formation section where the concrete placement amount has been determined, the concrete is placed every lift after the lift up. Thereafter, the series of processing is terminated.

The processes of S1 to S7 are repeatedly performed every time when the concrete has been placed on the rock surface part of the excavated protective mortar.
Specifically, as shown in FIG. 4 (d), the concrete placement is completed for the previous excavation range (for example, 5 lifts) of the protective mortar, and the formwork is moved to the section before the rock formation section. Suppose that lift-up is complete. In addition, the code | symbol 401 in FIG.4 (d) is an existing part of the dam dam body comprised from the already-placed concrete. In this situation, before lifting the formwork of the rock formation section, for example, as shown in FIG. 4E, the protection mortar in the next range of the right bank protection unit 201 is excavated.

  After the excavation of the protective mortar, as shown in FIG. 7, the upper corner portion of the end portion of the mold portions 301R and 302R before the lift-up that is in contact with the right bank rocking surface portion 102a is set to the right bank first reference point 501a and Set as the right bank second reference point 501b. In addition, the position in the direction orthogonal to the dam axis is approximately the middle position between the right bank first reference point 501a and the right bank second reference point 501b, and at an arbitrary height position on the right bank rock surface 102a, A reference point 501c is set. The left bank first reference point 502a, the left bank second reference point 502b, and the left bank third reference point 502c are set in the same procedure on the left bank side. That is, an anti-air sign 600 shown in FIG. 5B is installed at each reference point position. Thereafter, in the same manner as described above, taking the photo for surveying, generating the three-dimensional point cloud data, generating the control chart, calculating the concrete placement amount, and placing the concrete in the rock formation section Do.

(Configuration of rocky part construction information generation system 1)
Next, the rock formation part construction information generation system 1 according to the present embodiment, which is a system for generating the three-dimensional point cloud data in steps S4 to S6, generating the finished shape control chart, and calculating the concrete placement amount. Will be described.
As shown in FIG. 8, the rock formation part construction information generation system 1 includes a work shape information generation device 2 and a point cloud data generation device 3. The product shape information generation apparatus 2 and the point cloud data generation apparatus 3 are connected to each other via the Internet 700 so that data communication can be performed.
The generated shape information generation apparatus 2 generates a TIN model of the rock formation surface and a generated shape control chart of the rock formation section from the three-dimensional point cloud data of the imaging target area by using the three-dimensional CAD software. Further, the concrete placement amount for each lift of the rock formation section included in the imaging target region is calculated from the generated shape control chart data.

  The point cloud data generation device 3 uses the SFM to obtain three-dimensional point cloud data of the shooting target area from a plurality of shot image data obtained by stereo shooting of the shooting target area transmitted via the Internet 700. Generate. Then, the generated three-dimensional point cloud data is transmitted to the terminal that is the transmission source of the image data via the Internet 700. That is, the point cloud data generation device 3 is a server device that provides a cloud service for generating three-dimensional point cloud data. For example, a server device of “ReCap (registered trademark) 360 cloud service” provided by Autodesk is applicable. Here, “ReCap 360” is image processing software that generates three-dimensional point cloud data using SFM.

  Specifically, the point cloud data generation device 3 provides a web page for a point cloud data generation service. The point cloud data generation device 3 receives a request for generation of the three-dimensional point cloud data from the work shape information generation device 2, a plurality of captured image data of the shooting target area taken in stereo, and a reference point via this Web page. And information necessary for generating the three-dimensional point cloud data including the position information of. Then, 3D point cloud data of the imaging target region is generated from the acquired captured image data and information, and the generated 3D point cloud data is transmitted to the request-formed information generating device 2 via the Internet 700. .

(Hardware configuration of the product information generation device 2)
Next, a specific hardware configuration of the work form information generation apparatus 2 will be described.
As shown in FIG. 9, the product form information generation apparatus 2 includes a CPU (Central Processing Unit) 20, a RAM (Random Access Memory) 21, and a ROM (Read Only Memory) 22 as a computer system. In addition, an input / output interface (I / F) 24 and various internal / external buses 25 for data transfer are provided.
In this computer system, various internal / external buses 25 are connected to the CPU 20, RAM 21 and ROM 22, and an input device 40, a display device 41, a communication device 42, and the like are connected to the bus 25 via an input / output I / F 24. A storage device 43 and a memory card reader 44 are connected.

When the power is turned on, a system program such as BIOS stored in the ROM 22 or the storage device 43 loads various computer programs stored in advance in the ROM 22 or the storage device 43 into the RAM 21. Then, according to instructions described in the program loaded in the RAM 21, the CPU 20 makes use of various resources to perform predetermined control and arithmetic processing so that each function described later can be realized on software.
The input device 40 includes a known human interface device such as a mouse or a keyboard.

The display device 41 includes a known display device such as a liquid crystal display, a CRT display, or an organic EL display.
The communication device 42 is a device for communicating with an external device on a network such as a LAN or a WAN, and includes a known network adapter or the like generally called a LAN card or the like. The communication device 42 is connected to a router, a hub, or the like via a network cable, and connects the completed information generation device 2 to the Internet 700 via these.

The storage device 43 is composed of a large-capacity storage device such as a hard disk. This storage device 43 includes various programs such as 3D CAD software, a Web browser program, a program for generating a shape control chart, a program for calculating a concrete placement amount, and data necessary for executing the various programs. It is remembered. For example, the survey data of the existing part of the dam body, the survey drawing of the site (dam site 100d), the survey data of the formwork, and the like are stored.
In this embodiment, the memory card reader 44 is a device that reads data from a data storage memory card used in an electronic device such as a digital camera DC.

(Functional configuration of the product information generation device 2)
Next, a specific functional configuration of the work form information generation apparatus 2 will be described.
As shown in FIG. 10, the functional configuration unit 50 of the product shape information generation apparatus 2 includes a Web browser function unit 51, a data communication control unit 52, a product management chart generation support unit 53, and a three-dimensional CAD function unit 54. And a placement amount calculation unit 55. Note that the functions of these components are functions realized by the CPU 20 executing various programs.
The web browser function unit 51 has the same function as a known web browser. The web browser function unit 51 of this embodiment is mainly used when using the point cloud data generation service provided by the point cloud data generation device 3. That is, the Web browser function unit 51 causes the data communication control unit 52 to respond to the input of the URL of the Web page for the 3D point cloud data generation service provided by the point cloud data generation device 3 via the input device 40. To the point cloud data generation device 3. Then, Web page data is received from the point cloud data generation device 3, and a Web page for generating 3D point cloud data is displayed on the display device 41 based on the received data.

After that, when a plurality of photographed image data in the photographing target region is selected and an instruction for transmission thereof is input by an operator's operation input via the input device 40, the Web browser function unit 51 displays the selected plurality of photographed image data. The photographed image data is transmitted (uploaded) to the point cloud data generation device 3 via the data communication control unit 52.
Further, after the 3D point cloud data is generated by the point cloud data generation device 3, the Web browser function unit 51 responds to the operation input of the operator's display instruction of the 3D point cloud data via the input device 40. The designated three-dimensional point cloud data is displayed on the display device 41.

In addition, the Web browser function unit 51 transmits the specified 3D point cloud data via the data communication control unit 52 in response to an operation input of an operator's instruction to download the 3D point cloud data via the input device 40. Download. Then, the downloaded three-dimensional point cloud data is stored in the storage device 43.
The data communication control unit 52 responds to a data transmission request from a functional configuration unit such as the web browser function unit 51 to an external device such as the point cloud data generation device 3 connected to the Internet 700 via the communication device 42. And send data. In addition, data transmitted from the external device to the product information generation device 2 via the Internet 700 is received via the communication device 42, and the received data is output to a corresponding functional configuration unit.

The generated shape management chart generation support unit 53 has a function of supporting the screen operation of the three-dimensional CAD function unit 54 necessary for generating the generated shape management chart. Specifically, the generated shape control chart generation support unit 53 executes the support process when the CPU 20 executes the 3D CAD software installed in the storage device 43 and the 3D CAD function unit 54 is functioning. Execute. Then, the screen operations necessary for generating the finished shape control chart are automated.
This screen operation is automated using, for example, an image recognition technique. That is, a mark such as a drop-down mark or a character clicked with a mouse during screen operation is recognized as an image, and operation input information for clicking the recognized image position with the mouse is generated. Then, by inputting this operation input information to the three-dimensional CAD software, the worker clicks the recognized image without operating the mouse. A program for performing this automation can be easily created by using, for example, known software Sikuli. Sikuli is software that automates UI (User Interface) operations using image recognition.

The three-dimensional CAD function unit 54 includes a TIN model generation unit 54a, a contour line coordinate information extraction unit 54b, and a finished shape control chart generation unit 54c.
The TIN model generation unit 54a has a function of generating a TIN model of the rock surface from the 3D point cloud data and field survey data (CAD plan data) of the imaging target area including the rock surface. . In addition, as the three-dimensional CAD software having such a function, for example, “AutoCAD Civil3D (registered trademark)” of Autodesk, etc. is available.
The contour line coordinate information extracting unit 54b has a function of extracting contour line coordinate information corresponding to the input altitude from the TIN model of the rock surface.

The completed shape control chart generation unit 54c is a section adjacent to the rock formation section of the dam body corresponding to the input altitude, with the contour image (image showing the unevenness of the rock formation surface) formed from the extracted contour coordinate information. It has a function to generate a control chart of the rock formation section by synthesizing it with the sectional view of the existing part.
The placement amount calculation unit 55 inputs information necessary for calculating the concrete placement amount that can be read from the finished shape control chart of the rock formation (such as the flat area of the rock formation or information necessary for calculating the flat area). Accordingly, the amount of concrete placement for one lift at the corresponding altitude rock surface portion is calculated. For example, the previous flat area and the current flat area are added and divided by 2, and this result is multiplied by the height of one lift (for example, 1.5 [m]), so that one lift is placed next. Calculate the amount of concrete placed. Then, the current flat area and the calculated concrete placement amount are stored in the storage device 43 in association with the altitude information and the calculated concrete placement amount is displayed on the display device 41.

(Processing chart generation support processing)
Next, a processing procedure of a generated shape management chart generation support process executed by the generated shape management chart generation support unit 53 will be described.
In the CPU 20, when the created shape management chart generation support program is executed and the created shape management chart generation support process is started, as shown in FIG. 11, first, the process proceeds to step S100.
In step S <b> 100, the completed shape management chart generation support unit 53 displays a pop-up image for start selection including an OK button image and a cancel button image on the display device 41. Thereafter, the process proceeds to step S102.
In step S <b> 102, the completed shape management chart generation support unit 53 determines whether or not an OK button image has been pressed by an operation input via the input device 40. And when it determines with the OK button image having been pressed (Yes), it transfers to step S104, and when it determines with it not being (No), it transfers to step S120.

When the process proceeds to step S <b> 104, the first operation input information that is the operation input information for performing the screen operation necessary for generating the TIN model from the predesignated three-dimensional point cloud data in the generated shape management chart generation support unit 53. The information IN1 is input to the TIN model generation unit 54a of the three-dimensional CAD function unit 54. Then, after the TIN model is generated, the process proceeds to step S105.
Here, the first operation information IN1 is, for example, input information for screen operation for pasting 3D point cloud data to a survey drawing (CAD plan view) of a dam site surveyed by TS or the like, 3D point cloud data Input information for screen operation for making detailed settings for generating a TIN model from the.

In step S105, the completed shape control chart generation support unit 53 performs an operation for performing necessary screen operations until a screen for inputting the altitude is displayed by displaying the contour line overhead view of the TIN model in order to extract contour line coordinate information from the TIN model. The second operation information IN2, which is input information, is input to the contour line coordinate information extraction unit 54b of the three-dimensional CAD function unit 54. Then, after the screen for inputting the altitude is displayed, the process proceeds to step S106.
In step S106, the generated shape control chart generation support unit 53 displays a pop-up image for altitude input including a message image for prompting input of altitude of the extracted contour coordinates and an OK button image on the display device 41. Thereafter, the process proceeds to step S108.

In step S108, the completed shape management chart generation support unit 53 determines whether an altitude has been input (whether the altitude has been input and the OK button image has been pressed). And when it determines with the altitude having been input (Yes), it transfers to step S110, and when it determines with it not being so (No), a determination process is repeated until it inputs.
When the process proceeds to step S110, the control chart generation support unit 53 uses operation input information for performing a screen operation necessary to extract contour line coordinate information corresponding to the input height from the TIN model displayed as a contour line overhead view. Certain third operation information IN3 is input to the contour line coordinate information extraction unit 54b of the three-dimensional CAD function unit 54. Then, after the contour line coordinate information corresponding to the input altitude is extracted, the process proceeds to step S112.

In step S112, the completed shape control chart generation support unit 53 generates the completed shape control chart by combining the extracted contour line coordinate information with the sectional view of the existing part of the advanced dam body corresponding to the contour line coordinate information. The fourth operation information IN4, which is input information for the screen operation necessary for this, is input to the work-form management diagram generation unit 54c of the three-dimensional CAD function unit 54. Then, after the generated shape control chart is generated, the process proceeds to step S114.
In step S114, the generated shape control chart generation support unit 53 displays a pop-up image for storing name input including a message image for prompting input of the stored name of the generated generated shape control chart and an OK button image on the display device 41. To do. Thereafter, the process proceeds to step S116.

In step S116, the completed shape management chart generation support unit 53 determines whether a storage name has been input (whether the storage name has been input and an OK button image has been pressed). And when it determines with having input (Yes), it transfers to step S118, and when it determines with it not being (No), determination processing is repeated until it inputs.
When the process proceeds to step S118, the operation control information for performing screen operations necessary to store the image data of the operation chart in the storage device 43 with the input storage name in the operation control chart generation support unit 53. Certain fifth operation information IN5 is input to the finished shape management chart generation unit 54c of the three-dimensional CAD function unit 54. Thereafter, the series of processing is terminated.
On the other hand, if the OK button image is not pressed in step S102 and the process proceeds to step S120, the completed shape control chart generation support unit 53 determines whether or not the cancel button image is pressed. If it is determined that the cancel button image has been pressed (Yes), the series of processing ends, and if it is not determined (No), the process proceeds to step S102.

(Process control chart generation process)
Next, the processing procedure of the generated shape control chart generation process executed by the three-dimensional CAD function unit 54 will be described.
When the three-dimensional CAD software is activated in the CPU 20, as shown in FIG. 12, first, the process proceeds to step S200.
In step S200, the three-dimensional CAD function unit 54 determines whether or not the first operation information IN1 is input. And when it determines with the 1st operation information IN1 having been input (Yes), it transfers to step S202, and when it determines with it not being (No), it is a determination process until the 1st operation information IN1 is input. repeat.

When the process proceeds to step S202, the TIN model generation unit 54a of the three-dimensional CAD function unit 54 sets detailed information and sets the three-dimensional point cloud data according to the screen operation by the input first operation information IN1. Affix to the corresponding coordinate position on the site CAD drawing. Thereafter, a TIN model is generated from the three-dimensional point cloud data in addition to the detailed setting information and the on-site CAD drawing information, and the process proceeds to step S203.
In step S203, the three-dimensional CAD function unit 54 determines whether or not the second operation information IN2 is input. If it is determined that the input has been made (Yes), the process proceeds to step S204, and if not (No), the determination process is repeated until the second operation information IN2 is input.

When the process proceeds to step S204, the contour line coordinate information extracting unit 54b of the three-dimensional CAD function unit 54 displays the contour line overhead view according to the screen operation based on the input second operation information IN2, and the extraction target Displays a screen for entering the altitude of contour coordinate information. Thereafter, the process proceeds to step S206.
In step S206, the three-dimensional CAD function unit 54 determines whether or not the third operation information IN3 is input. If it is determined that the third operation information IN3 has been input (Yes), the process proceeds to step S208. If it is determined that this is not the case (No), determination processing is performed until the third operation information IN3 is input. repeat.

If the process proceeds to step S208, the contour input information extraction unit 54b of the three-dimensional CAD function unit 54 performs altitude input to the altitude input field of the CAD display screen in accordance with the screen operation based on the input third operation information IN3. The altitude input in the pop-up image is input, and contour coordinate information corresponding to the input altitude is extracted from the contour line overhead view. Thereafter, the process proceeds to step S210.
In step S210, the three-dimensional CAD function unit 54 determines whether or not the fourth operation information IN4 has been input. If it is determined that the input has been made (Yes), the process proceeds to step S212. If it has not been determined (No), the determination process is repeated until the fourth operation information IN4 is input.

When the process proceeds to step S212, the contour image indicated by the extracted contour coordinate information is displayed in response to the screen operation by the input fourth operation information IN4 in the finished shape management chart generation unit 54c of the three-dimensional CAD function unit 54. The cross section of the section adjacent to the rock formation section of the dam dam is synthesized at the altitude of the contour image. Thereby, the completed shape control chart of the rock formation section corresponding to the input altitude is generated, and the process proceeds to step S214.
In step S214, the three-dimensional CAD function unit 54 determines whether or not the fifth operation information IN5 has been input. When it is determined that the input has been made (Yes), the process proceeds to step S214. When it is determined that the input has not been made (No), the determination process is repeated until the fifth operation information IN5 is input.
When the process proceeds to step S216, the generated shape management chart 54c of the three-dimensional CAD function unit 54 stores the generated shape management chart in the storage device 43 with the input storage name. Thereafter, the series of processing is terminated.

(Operation)
Next, the operation of this embodiment will be described based on FIGS. 13 to 15 with reference to FIGS.
Now, during the construction of the gravity concrete dam, in order to lift up the existing molds 301 and 302 in the rock formation section, as shown in FIG. It is assumed that excavation of protective mortar (for example, the 6th to 10th lift from the ground) has been performed.
When the protective mortar is excavated and the right bank rock surface 102a is exposed, as shown in FIG. 7, the operator who takes the photo for surveying faces the right bank rock surface of each of the molds 301 and 302 before the lift-up. An anti-air sign 600 is installed at the upper corner of the end. As a result, the right bank first reference point 501a and the right bank second reference point 501b are set. Subsequently, an anti-air sign 600 is installed on the right bank rocking surface 102a at a predetermined position at the center of the right bank first reference point 501a and the right bank second reference point 501b by TS or the like. Thus, the right bank third reference point 501c is set.

The operator sets the shooting specifications of the digital camera DC in advance so that the GSD is 0.4 [cm] or less. Here, a digital camera DC having 22.3 million effective pixels is used, the focal length is 24 [mm], and the shooting distance is 10 [m] or less. In addition, it is preferable to confirm the state of the rock surface that is the subject of photographing in advance. For example, when the sunlight is strong and the sunlight is strong, the entire image is white, so the shooting time is shifted or shooting is avoided.
When the operator determines that photographing is possible, the photographing target region including the right bank rock surface 102a and the right bank first to third reference points 501a to 501c is shown in FIG. Stereo shooting is performed in the manner exemplified in (a) and (b).

A plurality of photographed image data obtained by this stereo photographing is stored in a memory card of the digital camera DC.
Subsequently, the operator inserts the memory card removed from the digital camera DC into the memory card reader 44 of the work-form information generating apparatus 2 in order to generate the three-dimensional point cloud data of the imaging target area.
Thereafter, the operator operates the input device 40 to start a Web browser and cause the Web browser function unit 51 to function. Thereby, a browser screen (not shown) is displayed on the display device 41. Subsequently, the URL of the Web page for the three-dimensional point cloud data generation service is input to the URL input field on the browser screen to access the point cloud data generation device 3. As a result, the web page login screen data is downloaded from the point cloud data generation device 3. As a result, a login screen (not shown) for the 3D point cloud data generation service is displayed on the display device 41.

When the login screen is displayed, the worker inputs a login ID and a password via the input device 40. As a result, the point cloud data generation device 3 executes an authentication process, and when the worker is authenticated, transmits the data of the Web page to the work-form information generation device 2.
Upon receipt of the Web page data, the work-form information generating device 2 displays the Web page on the display device 41 based on this data. When the Web page is displayed, the operator operates the input device 40 according to the guidance on the screen, and selects photographed image data to be uploaded from a plurality of photographed image data stored in the memory card. In addition, necessary information such as the three-dimensional coordinate information of the reference point is input to each input field on the screen. Then, the transmission instruction button image displayed on the screen is pressed. As a result, the selected photographed image data and input information are transmitted to the point cloud data generation device 3 via the Internet 700. In addition, selection of picked-up image data is performed so that the whole area of the right bank rock surface 102a and the right bank first to third reference points 501a to 501c may be included.

On the other hand, when the point cloud data generation device 3 receives a plurality of captured image data and input information from the product shape information generation device 2, the point cloud data generation software (for example, ReCap 360) captures the captured image data included in the captured image data. Three-dimensional point cloud data of the target area is generated. As a result, for example, it is assumed that three-dimensional point cloud data 1020 as shown in FIG.
When the point cloud data generation device 3 receives the download request for the 3D point cloud data 1020 from the work shape information generation device 2 after generating the 3D point cloud data 1020, the point cloud data generation device 3 generates the work shape information. Transmit to device 2.

When the 3D point cloud data 1020 is downloaded from the point cloud data generation device 3, the completed shape information generation device 2 stores the downloaded 3D point cloud data 1020 in the storage device 43.
When the worker downloads the three-dimensional point cloud data 1020, the worker activates the three-dimensional CAD software and causes the three-dimensional CAD function unit 54 to function. As a result, a three-dimensional CAD operation screen is displayed on the display device 41. Subsequently, the completed shape control chart generation support unit 53 is caused to function by an operation input via the operator's input device 40. As a result, the display device 41 displays a start selection pop-up image including an OK button image for starting generation of a completed control chart and a cancel button image for canceling.

Here, it is assumed that the operator presses an OK button image via the input device 40. As a result, the support control for screen operation of the three-dimensional CAD software for generating the control table for generated shape is started by the generated control chart generation support unit 53.
The generated shape control chart generation support unit 53 first receives first operation information IN1 which is operation input information for performing a series of screen operations necessary for generating a TIN model from pre-designated 3D point cloud data. The data is input to the TIN model generation unit 54 a of the three-dimensional CAD function unit 54.

  As a result, the operation screen of the three-dimensional CAD software is automatically operated, and the TIN model generation unit 54a is created from the survey data prepared in advance (dam site 100d) as shown in FIG. 13B. The downloaded three-dimensional point cloud data 1020 is pasted to the corresponding coordinate position on the site plan 1000 which is a CAD plan. Subsequently, based on the site plan 1000 and the three-dimensional point cloud data 1020, a TIN model 1021 composed of irregular triangles shown in FIG. 13C is generated.

When the TIN model 1021 is generated, the generated shape control chart generation support unit 53 displays a contour bird's-eye view of the TIN model 1021 and performs a series of screen operations of the 3D CAD software necessary to display the input screen of the extracted height. The second operation information IN2 that is the operation input information for performing is input to the contour line coordinate information extraction unit 54b of the three-dimensional CAD function unit 54.
As a result, the operation screen of the 3D CAD software is automatically operated, and the contour line overhead view 1022 of the TIN model 1021 as shown in FIG. . Thereafter, an altitude input screen (not shown) for inputting the altitude of the contour line coordinate information to be extracted is displayed on the operation screen of the three-dimensional CAD.

When the altitude input screen is displayed, the completed shape management chart generation support unit 53 displays a pop-up image (not shown) for altitude input on the display device 41. Thereby, the operator can input a desired altitude into the altitude input field of this pop-up image via the input device 40.
Here, it is assumed that the operator inputs the altitude in the altitude input field of the altitude input pop-up image and presses the OK button image.

As a result, the completed shape control chart generation support unit 53 obtains the third operation information IN3, which is operation input information for performing a series of screen operations of the 3D CAD software necessary for extracting the contour coordinate information of the input altitude, The information is input to the contour line coordinate information extraction unit 54 b of the three-dimensional CAD function unit 54.
As a result, the operation screen of the 3D CAD software is automatically operated, and the altitude is input to the altitude input screen of the 3D CAD software in the contour coordinate information extraction unit 54b, and the contour line corresponding to the input altitude is obtained from the contour line overhead view 1022. Coordinate information is extracted.

After the contour coordinate information is extracted, the completed shape control chart generation support unit 53 performs an operation for performing a screen operation of the 3D CAD software necessary for generating a generated shape control chart of the concrete placement section including the rock formation section. The fourth operation information IN4, which is input information, is input to the finished shape management chart generation unit 54c of the three-dimensional CAD function unit 54.
As a result, the operation screen of the three-dimensional CAD software is automatically operated, and the contour image 1023 represented by the extracted contour coordinate information shown in FIG. The dam body cross-sectional view 1024 shown in FIG.

Here, the dam body sectional view 1024 is an image including a scale image 1025 based on the dam axis and an existing section sectional view 1026. The existing section sectional view 1026 is a cross-sectional view of the existing section of the dam ridge that is adjacent to the rock formation section including the rock formation section at the position indicated by the extracted contour coordinate information, at the altitude position of the contour image 1023.
Specifically, the completed shape control chart generation unit 54c inserts the contour line image 1023 at the corresponding coordinate position on the scale image 1025 of the dam body cross-sectional view 1024. As a result, a finished shape management chart 1027 of the rock formation section corresponding to the input altitude shown in FIG. 14C is generated.

The generated shape management chart generation support unit 53 displays a pop-up image for inputting a storage name on the display device 41 when the generated shape management chart 1027 is generated. Thereby, the operator can input the storage name via the input device 40.
Here, it is assumed that the operator inputs a storage name in the storage name input field of the storage name input pop-up image and presses the OK button image.
As a result, the created shape management chart generation support unit 53 provides fifth operation information which is operation input information for performing the screen operation of the three-dimensional CAD software necessary for saving the created shape management chart 1027 with the input saved name. IN5 is input to the generated shape control chart generation unit 54c of the three-dimensional CAD function unit 54.

As a result, the operation screen of the three-dimensional CAD software is automatically operated, and the generated product shape management chart 1027 is stored in the storage device 43 with the input storage name.
When the finished shape management chart 1027 is generated, the operator uses, for example, three-dimensional CAD software to calculate the concrete placement amount necessary for placing the concrete in the corresponding rock formation section. Extracted from the completed form management chart 1027. For example, the flat area of the rock formation section at the input altitude is extracted. Then, the extracted plane area information is input to the placement amount calculation unit 55 via the input device 40.

When the information on the flat area is input, the placement amount calculation unit 55 adds the current flat area and the previous flat area, divides the result by 2, and multiplies the result by the height of one lift. Calculate the amount of concrete placement. Further, the current flat area and the calculated concrete placement amount are stored in the storage device 43 in association with the altitude information, and the calculated concrete placement amount is displayed on the display device 41.
Thereafter, using the generated finished shape management chart 1027 and the calculated concrete placement amount, a report and confirmation are made to the orderer, and the orderer's approval is obtained for the calculated concrete placement amount.

When the orderer's approval is obtained, the existing molds 301 and 302 are lifted up to the rocky section on the right bank side, and concrete for one lift is placed.
Here, as shown in FIG. 15, the above-described surveying photo taking operation takes about 20 minutes on a general medium-sized dam scale, although it depends on the width of the rock surface. Also, the selection and uploading of the above photos takes about 40 minutes depending on the number of photos taken. In addition, the work time required to generate the completed shape management chart 1027 from the three-dimensional point cloud data 1020 is approximately 5 minutes. On the other hand, the time taken to generate the three-dimensional point cloud data 1020 is about 6 hours, but since the work after uploading is performed on the point cloud data generation device 3 side, 0 minutes. Accordingly, the total work time of the worker from the taking of the surveying photograph to the generation of the work management chart 1027 is approximately 65 minutes. The generation cost of the three-dimensional point cloud data is one model “750 yen”.

On the other hand, when the work up to the generation of the control chart is performed by surveying using the conventional TS, it takes about twice as much work time for each lift by two or more workers. Therefore, compared with the method of the present embodiment in which one worker can measure 5 to 6 lifts at a time, the labor cost alone is a significant cost increase.
In the said embodiment, the rock formation part construction information generation system 1 respond | corresponds to the shape control chart generation system and concrete placement amount calculation system for dam construction, and the memory card reader 44 respond | corresponds to a picked-up image data acquisition part. .
The web browser function unit 51 corresponds to the reference point coordinate acquisition unit, the point cloud data generation device 3 corresponds to the point cloud data generation unit, and the contour line coordinate information extraction unit 54b corresponds to the contour line coordinate information acquisition unit. The storage device 43 corresponds to the body coordinate information storage unit.

(Operation and effect of the embodiment)
According to the survey photography method for dam construction according to the embodiment, a predetermined excavation range (for example, 5 to 6 lifts) of the protection mortar constituting the right bank protection unit 201 or the left bank protection unit 202 is excavated. One or more reference points with known three-dimensional coordinate information are set in the imaging target region including the right bank rock surface 102a or the left bank rock surface 103a. Specifically, one or more reference points (the right bank third reference point 501c or the left bank third reference point 503c) are set on the right bank rock surface 102a or the left bank surface 103a. In addition, two formwork sections at positions facing the rock surface of the formwork 301 and 302 installed on the upstream side and the downstream side of the dam body respectively (the right bank side is the mold parts 301R and 302R, the left bank side is The upper corners of the mold parts 301L and 302L are used as reference points. Specifically, the anti-air signs 600 are respectively installed in the upper corners of the mold parts 301R and 302R or the mold parts 301L and 302L so that three or more reference points are included in the imaging target region. Accordingly, the left bank first and second reference points 501a to 501b or the right bank first and second reference points 502a to 502b are set. That is, since the exact position of the formwork is known by the formwork survey, the reference point is set in the formwork part.

Furthermore, after the reference point is set, the area to be imaged is changed from a plurality of different shooting positions on the ground or the existing part of the dam body to a plurality of adjacent shot images at each of the shooting positions by the digital camera DC. Shoot so that part of the shooting area overlaps (wraps). As a result, a plurality of captured images in which the imaging target area is divided into a plurality of imaging areas are obtained.
Thereby, it is possible to reduce the labor of measuring the reference points necessary for photogrammetry. In addition, since it is configured to take a photograph from the ground or the existing part of the dam dam, it is possible to take a surveying photograph of the rocky surface at a lower cost than aerial photography using UAV. Moreover, since it is only necessary to take a picture, it is possible to survey a plurality of lifts at a time as compared with the survey using a conventional surveying machine.

Further, the excavation range of the protective mortar was set to the range of M (M is a natural number of 2 ≦ M <N) lift, where N is the total number of lifts for placing concrete. Further, the protective mortar is photographed for each photographing target region including the rock surface portion of M lift (for example, five lifts) after excavation.
That is, since the range for the M lift is photographed at a time, the cost for surveying can be reduced as compared with the conventional survey for each lift.
In addition, the hand-held digital camera DC was used for manual shooting. Specifically, the worker stops at multiple locations while moving from one side of the rock surface part in the width direction to the other side, and when the operator stops, multiple images are changed while changing the shooting angle in the height direction. A plurality of captured images were obtained by shooting.
This makes it possible to easily shoot by hand without incurring extra costs.For example, while avoiding calls to other workers on the site to evacuate from the shooting area and on-site work machines. It is possible to perform shooting according to the situation at the site, such as shooting.

  Moreover, according to the rocky part construction information generation system 1 according to the embodiment, the point cloud data generation device 3 includes a plurality of photographed image data obtained by photographing with the above-described survey photography method, and a photographing target area. And the three-dimensional coordinate information of the reference point (left bank first to third reference points 501a to 501c or right bank first to third reference points 502a to 502c). The point cloud data generation device 3 generates 3D point cloud data 1020 of the imaging target region based on the acquired plurality of captured image data and the 3D coordinate information of the reference point. The generated shape information generation apparatus 2 generates a TIN model 1021 of the imaging target region based on the three-dimensional point cloud data 1020 generated by the point cloud data generation apparatus 3 by the TIN model generation unit 54a. The completed shape information generating apparatus 2 extracts the contour line coordinate information of the rock surface corresponding to the imaging target area based on the TIN model 1021 by the contour line coordinate information extracting unit 54b. Based on the contour coordinate information and the coordinate information of the existing portion, the completed shape information generation apparatus 2 generates the contour image 1023 of the rock formation surface as a completed shape management diagram 1027 of the dam rock formation portion. And a sectional view of the concrete placement section including the dam rock formation portion, which is a combination of the existing portion sectional view 1026 obtained by cutting the existing portion at the altitude position of the contour image 1023.

If it is this structure, compared with the case where a shape control chart is produced | generated using the survey data by surveying machines, such as TS, it becomes possible to obtain a highly accurate result control chart at low cost. That is, the photogrammetry that captures the imaging target area as high-resolution point cloud data has higher survey accuracy than the survey using a surveying machine such as TS.
Moreover, according to the rock formation part construction information generation system 1 according to the embodiment, the completed shape information generation apparatus 2 uses the placement amount calculation unit 55 based on the contour line coordinate information and the coordinate information of the existing part. The concrete placement amount of the concrete placement section including the part is calculated.
With this configuration, it is possible to calculate a high-precision concrete placement amount at a low cost compared to the case where the concrete placement amount is calculated using survey data obtained by a surveying machine such as TS.

In addition, according to the rock formation construction information generation system 1 according to the embodiment, the completed shape information generation apparatus 2 uses the three-dimensional point cloud data designated in advance by the completed shape control chart generation support unit 53. First operation information IN1, which is a series of operation input information for performing screen operations of the 3D CAD software necessary for generating the partial TIN model 1021, is input to the 3D CAD software. Subsequently, after the TIN model 1021 is generated by the generated shape control chart generation support unit 53, the contour line overhead view 1022 of the TIN model 1021 is displayed, and a series of 3D CAD software necessary for displaying the extraction height input screen is displayed. The second operation information IN2 which is operation input information for performing the screen operation is input to the three-dimensional CAD software. Subsequently, the completed shape control chart generation support unit 53 displays a pop-up image for altitude input on the display device 41 that accepts an altitude input for extracting contour line coordinate information. Subsequently, when the generated shape control chart generation support unit 53 determines that an altitude input has been received, the screen operation of the 3D CAD software necessary for extracting contour line coordinate information corresponding to the input altitude from the TIN model 1021 is performed. Third operation information IN3, which is a series of operation input information, is input to the three-dimensional CAD software. Next, it is necessary to generate the construction control chart of the concrete placement section including the dam rock part corresponding to the input altitude after extracting the contour coordinate information corresponding to the input altitude by the completed form management chart generation support unit 53. The fourth operation information IN4, which is a series of operation input information for performing the screen operation of the 3D CAD software, is input to the 3D CAD software.
With this configuration, when using the 3D CAD software to generate the finished shape management chart 1027, it becomes possible to perform a semi-automatic complicated screen operation of the 3D CAD software. Therefore, even a poor worker can easily generate a finished shape control chart.

(Modification)
(1) In the above embodiment, in the setting of the reference point at the time of formwork installation, the reference point is set in the mold part in contact with the rock formation surface of the formwork installed in the rock formation section. Not limited to. For example, as shown in FIG. 16, a configuration in which the reference points are set in the formwork portions 301R and 302R or 301L and 302L on the side closest to the rocking section of the section adjacent to the right bank rocking section RCR or the left bank rocking section RCL. It is good.
(2) In the above embodiment, the anti-air sign is installed at the position of the upper corner of the rock surface side end of the formwork, but the present invention is not limited to this configuration. For example, it is good also as a structure which does not install an anti-air sign. In other words, if the reference point can be specified in the image without installing an anti-air sign from the difference between the color of the rocky surface and the color of the formwork or the shape of the corner of the formwork, do not install the sign Is also possible.

(3) In the above embodiment, the cloud service provided by the point cloud data generation device 3 is used to obtain 3D point cloud data. However, the present invention is not limited to this configuration. For example, the product shape information generation device 2 may have a function of generating 3D point cloud data.
(4) In the above embodiment, a gravity concrete dam has been described as an example. However, the present invention may be applied not only to a gravity concrete dam but also to other concrete dams having a rock formation section.
(5) In the above embodiment, the configuration in which the dam is constructed using the extended layer construction method has been described as an example. However, the present invention is not limited to this configuration, and the column construction method, the layer construction method, the RCD (Roller Compacted Dam-Concrete) method, etc. It is good also as a structure which applies other construction methods.
(6) In the above-described embodiment, the configuration is such that three reference points are set in the imaging target region. However, the present invention is not limited to this configuration, and a configuration in which four or more reference points are set may be employed.

DESCRIPTION OF SYMBOLS 1 Rocky part construction information generation system 2 Shape information generation device 3 Point cloud data generation device 40 Input device 41 Display device 42 Communication device 43 Storage device 44 Memory card reader 51 Web browser function part 52 Data communication control part 53 Work piece management Figure generation support part 54 Three-dimensional CAD function part 54a TIN model generation part 54b Contour line coordinate information extraction part 54c Work shape control chart generation part 55 Placing amount calculation part 102 Right bank foundation rock 102a Right bank rock landing part 103 Left bank foundation rock 103a Left bank rock Landing surface part 201 Right bank protection part 202 Left bank protection part 301 Downstream formwork 301R Downstream right formwork part 301L Downstream left formwork part 302 Upstream formwork 302R Upstream right formwork part 302L Upstream left formwork part 501a 501c Right bank first to third reference points 502a to 502c Left bank first to third reference points 1020 3D point cloud data 1021 TIN model 1022 Contour line overhead view 1023 Contour line image 1026 Cross section of existing part 1027

Claims (10)

A survey photography method for construction of a dam for surveying the three-dimensional shape of a rock surface that rocks the side of a dam dam body of a concrete dam,
A reference point for setting one or more reference points whose three-dimensional coordinate information is known in a photographing target region including a rock surface portion after excavation of a preset excavation range among the surface protection members covering the rock surface A setting process;
From the plurality of different shooting positions on the ground or the existing part of the dam body, a plurality of shooting areas are overlapped by the digital camera, and a part of the shooting area overlaps between adjacent shooting images. A photographing step of obtaining a plurality of photographed images by photographing as described above,
Three corners of the two molds installed at positions facing the rock surface among the molds installed on the upstream and downstream sides of the dam body are also used as reference points in the imaging area. Surveying photography method for dam construction to include the above reference points.   The survey photography method for dam construction according to claim 1, wherein in the photographing step, photographing is manually performed with a hand-held digital camera.   In the photographing step, an operator stops at a plurality of locations while moving from one side in the width direction of the rock surface portion toward the other side, and when the operator stops, the photographing angle in the height direction is changed. 3. The survey photography method for dam construction according to claim 2, wherein the plurality of photographed images are obtained by photographing a plurality of sheets. The excavation range is a range of M (M is a natural number of 2 ≦ M <N) lifts, where N is the total number of lifts for placing concrete.
The surveying process for dam construction according to any one of claims 1 to 3, wherein in the imaging step, imaging is performed for each imaging target region including a rock surface portion corresponding to M lift after excavation of the surface protection member. Photography method.   5. The method according to claim 1, wherein in the reference point setting step, at least one reference point is set in the imaging target region, and a marker is installed at a corner of the two molds. Surveying photography method for dam construction. A method for generating a shape control chart for dam construction that generates a shape control chart for managing the shape of a concrete placement section including a rock formation part of a dam dam,
A rock surface photographing process for photographing a region to be photographed including the rock surface portion using the photographic method for surveying for dam construction according to any one of claims 1 to 5,
3D of the imaging target region based on a plurality of captured images of the imaging target region obtained by imaging in the rock surface imaging process and three-dimensional coordinate information of the reference point set in the imaging target region A point cloud data generation step for generating point cloud data;
A TIN model generation step of generating a TIN (triangulated irregular network) model of the imaging target region based on the three-dimensional point cloud data;
A contour coordinate information extracting step of extracting contour coordinate information of a rock surface corresponding to the imaging target region from the TIN model;
Concrete including a dam rock formation part based on the contour line coordinate information extracted in the contour line coordinate information extraction step and the coordinate information of the existing part of the dam ridge facing the rock surface part at an altitude corresponding to the contour line coordinate information A generated shape control chart generation method for dam construction, including a generated shape control chart generation step of generating a generated shape control chart of the placement section. A concrete placement amount calculation method for calculating a concrete placement amount of a concrete placement section including a rock attachment portion of a dam pier,
A rock surface photographing process for photographing a region to be photographed including the rock surface portion using the photographic method for surveying for dam construction according to any one of claims 1 to 5,
3D of the imaging target region based on a plurality of captured images of the imaging target region obtained by imaging in the rock surface imaging process and three-dimensional coordinate information of the reference point set in the imaging target region A point cloud data generation step for generating point cloud data;
A TIN model generation step of generating a TIN (triangulated irregular network) model of the imaging target region based on the three-dimensional point cloud data;
A contour coordinate information extracting step of extracting contour coordinate information of a rock surface corresponding to the imaging target region from the TIN model;
Based on the contour coordinate information extracted in the contour line coordinate information extraction step and the coordinate information of the existing part of the dam dam facing the rock surface portion at a high altitude corresponding to the contour coordinate information, the concrete placement including the dam rock formation part is performed. A concrete placement amount calculation method for dam construction, comprising: a placement amount calculation step of calculating a concrete placement amount of a section. A photographed image data acquisition unit for acquiring a plurality of photographed image data obtained by photographing with the surveying photography method for dam construction according to any one of claims 1 to 5,
A reference point coordinate acquisition unit for acquiring three-dimensional coordinate information of the reference point;
A point cloud data generation unit that generates 3D point cloud data of the imaging target region based on the plurality of captured image data and the 3D coordinate information of the reference point;
A TIN model generation unit that generates a TIN (triangulated irregular network) model of the imaging target region based on the three-dimensional point cloud data;
A contour coordinate information extracting unit for extracting contour coordinate information of a rock surface corresponding to the imaging target region from the TIN model;
A body coordinate information storage unit for storing coordinate information of an existing part of a dam body facing the rock surface portion at a height corresponding to the contour line coordinate information extracted by the contour line coordinate information extraction unit,
Based on the contour line coordinate information extracted by the contour line coordinate information extraction unit and the coordinate information of the existing part of the dam dam body corresponding to the contour line coordinate information, as a finished shape control chart of the dam rock formation part, A dam construction chart generating section for generating a sectional view of a concrete placement section including a dam rock formation section obtained by synthesizing a contour line and a sectional view of the existing section cut at an altitude position of the contour line; A control chart generation system. A photographed image data acquisition unit for acquiring a plurality of photographed image data obtained by photographing with the surveying photography method for dam construction according to any one of claims 1 to 5,
A reference point coordinate acquisition unit for acquiring three-dimensional coordinate information of the reference point;
A point cloud data generation unit that generates 3D point cloud data of the imaging target region based on the plurality of captured image data and the 3D coordinate information of the reference point;
A TIN model generation unit that generates a TIN (triangulated irregular network) model of the imaging target region based on the three-dimensional point cloud data;
A contour coordinate information acquisition unit that acquires contour coordinate information of a rock surface corresponding to the imaging target region based on the TIN model;
A body coordinate information storage unit for storing coordinate information of an existing part of the dam body facing the rock surface portion at a height corresponding to the contour line coordinate information;
A concrete placement amount for dam construction comprising: a placement amount calculation unit for calculating a concrete placement amount of a concrete placement section including a dam rock formation portion based on the contour line coordinate information and the coordinate information of the existing portion Calculation system. A 3D CAD software that generates a shape control chart to manage the shape of the concrete placement section including the rock formation part of the dam body from the 3D point cloud data of the rock surface part where the dam body is attached A production control chart generation support program that supports screen operations,
A series of operation input information for performing screen operations of the 3D CAD software necessary to generate a TIN (triangulated irregular network) model of the rock surface using the 3D point cloud data prepared in advance. A first operation input step of inputting one operation information to the three-dimensional CAD software;
An altitude input accepting step for accepting an altitude input for extracting contour line coordinate information after the 3D CAD software generates the TIN model in response to a screen operation by the input of the first operation information;
If it is determined that the altitude input is received, a second operation that is a series of operation input information for performing screen operations of the 3D CAD software necessary for extracting contour coordinate information corresponding to the input altitude from the TIN model. A second operation input step for inputting information to the three-dimensional CAD software;
After the contour coordinate information corresponding to the input height is extracted by the three-dimensional CAD software in response to a screen operation by the input of the second operation information, the contour image of the input height is converted into the height of the contour image prepared in advance. It is synthesized with a cross-sectional image of the existing part of the dam foundation facing the rock surface part at a position, and a finished shape control chart of the concrete placement section including the dam rock formation corresponding to the input height is generated. 3rd operation input step which inputs the 3rd operation information which is a series of operation input information which performs screen operation of the 3D CAD software required for 3D CAD software to a computer is performed. A production control chart generation support program including a program for the above.