JP2001172972A - Laying and leveling thickness control system for fill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laying and leveling thickness control system for fill by laser level. SOLUTION: A catch-basin is installed in the original ground in a fill zone, and a mark for a light receiver 7 is attached to a position with a predetermined height H from the bottom end of a bowl 6 on a bulldozer for laying and leveling soil 4. A laser level 8 of a turning beam generating type 9 is positioned to an upper initial position by a distance larger than the predetermined height H from the catch-basin along a vertical datum line passing the catch-basin. Filling is performed until the turning beam 9 of the positioned laser level 8 always intersects with the mark on the bulldozer 5 in the fill zone, and the laying and leveling works are carried out. A shaft work for forming or extending the vertical shaft from the laid and leveled fill layer to the catch-basin is performed as required, and the laser level 8 is raised by the predetermined laying and leveling thickness h for the fill layer along the vertical datum line, and a raising work for positioning is performed. Thereafter, the cycles comprising the laying and leveling works and shaft connection works and raising works as required are repeated by the required times thereby forming the fill layers of the required number.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embankment layer to be formed evenly in a construction in which a large amount of soil is laid in multiple layers such as landfill for valleys required for airport construction in mountainous areas. In particular, the present invention relates to a management system of “equal thickness”.) In particular, it relates to an embedding thickness management system using a laser level.

[0002]

2. Description of the Related Art In order to construct a vast land by embankment, a construction method is adopted in which embankment layers having a thickness of about several tens of centimeters are sequentially superimposed in multiple layers. In this case, after filling each embankment layer to a predetermined thickness and compacting it to a required hardness, the next succeeding embankment layer is formed thereon. In order to control the leveling thickness of the embankment layer, a moving stake was conventionally installed manually and the leveling was visually controlled so that the surface of the embankment layer matched the moving staking.

[0003] In order to control the degree of compaction, the density of the embankment layer, which represents the degree of compaction, is determined by a sand displacement method, a water displacement method, or the like.
Measurement at a plurality of points by the RI (radioisotope) method or the like has been performed.

[0004]

The conventional flattening thickness control using the moving sash has a drawback that the accuracy of the flattening thickness is ± 20 cm and the accuracy is insufficient from the viewpoint of earthwork quality control. Improvements in accuracy have been required.

[0005] In addition, since large-scale embankment works take a long time, a drainage gradient is provided in the embankment layer under construction to drain water, and the embankment layer is prevented from being softened by rainwater and hindering compaction. There is a need. However, when a drainage gradient is provided for each embankment layer, there is a problem that it is difficult to accurately manage the gradient because the gradient is formed based on the experience and intuition of a skilled worker. In addition, there has not been a construction method that can accurately and systematically manage data such as the leveling thickness of a sloping embankment layer.

The compaction management based on the density measurement at a plurality of points has a limitation for quality control.
It is required to measure at 15 points for every ³ . According to this measurement frequency, when the embankment amount is 40,000 m ³ , measurement at 1500 points is required, and there is a problem that a great deal of labor and time are required. To solve the problem of a large number of measurement points,
A task meter method and a pass counter method have been proposed in which the compaction operation is performed by a compaction roller wheel (hereinafter, may be referred to as a roller wheel) and managed by the traveling distance and traveling path.

However, in the case of embankment construction comprising a large number of embankment layers, leveling and rolling by a roller wheel can be alternately and efficiently performed for each embankment layer while keeping the quality such as leveling thickness constant. There has been no such embankment leveling thickness control system. As an example of the problem, even if the roller wheel is run on the embankment layer where the spread thickness is not uniform,
The degree of compaction in the thick part of the embankment layer is lower than the degree of compaction in the thin part, so that uniformity of the compaction cannot be ensured.

[0008] Accordingly, it is an object of the present invention to provide a fill level management system for embankment using a laser level in order to solve the above-mentioned problems of the prior art.

[0009]

In order to solve the above problems, the present inventor has proposed an embankment using a combination of a laser level for generating a swirling beam of a laser and a receiver fixed to a leveling bulldozer. We paid attention to the ability to accurately control the layer thickness.

Referring to the embodiments shown in FIGS. 1, 2 and 3, the embankment leveling management system according to the present invention provides a drainage basin 3 on an original ground 1 in an embankment area in a multi-layer embankment work. A marker 7b (see FIG. 7) of the light receiver 7 is attached to a site at a predetermined height H from the lower end of the earthwork plate 6 on the bulldozer 5 on which the soil 4 is spread, and along a vertical reference line V passing through the drainage basin 3. Positioning the laser level 8 of the swivel beam 9 generating type at an initial position above the drainage basin 3 by a distance not less than the predetermined height H;
Filling and leveling is performed until the swirling beam 9 of the positioned laser level 8 always intersects the sign 7b on the bulldozer 5 in the embankment area; from the leveled embankment layer 13 to the drainage basin 3 A vertical shaft connecting work for forming or extending the vertical shaft 12 was performed as necessary; a raising work for positioning the laser level 8 along the vertical reference line V by raising the level by a predetermined leveling thickness h of the embankment layer was performed. After; a cycle consisting of the leveling work, the vertical shaft connecting work and the raising work as required is repeated a predetermined number of times.

The initial position where the laser level 8 is first positioned is the distance from the drainage basin 3 to the height H or more, that is, the distance from the lower end of the earthwork plate 6 on the bulldozer 5 to the marker 7b of the light receiver 7 on the bulldozer 5 as well. The reason is that if the height is equal to or less than the predetermined height H from the lower end of the earthwork board 6 to the sign 7b, the bulldozer 5 may come into contact with the drainage basin 3 in the leveling work. The predetermined leveling thickness h of the embankment layer is determined mainly by the thickness to the extent that compaction can be effectively performed by the compaction of the embankment layer described below.
The predetermined number of times of the cycle consisting of the leveling work, the shaft connection work, and the raising work is determined by the height of the site to be laid by embankment, the finishing layer portion 16 (see FIG. 2) separately subjected to earthwork on the site, and the like. .

In the cycle in which the leveling work and the raising work are repeated, the shaft connecting work does not need to be performed every cycle, but is required according to the ratio between the extension length of the shaft and the predetermined leveling thickness h. Sometimes it is enough. For example, if the extension length of the shaft is 2 to 5 times the thickness h and the length is predetermined,
Each time the cycle consisting of the leveling work and the raising work is repeated two to five times, the cycle in which the shaft connection work is performed once can be performed.

Preferably, the turning surface of the turning beam 9 of the laser level 8 is a mortar-shaped conical surface with the lower level of the laser level 8 being a vertex, and drainage from the embankment layer 13 to the shaft 12 is ensured.

Referring to FIGS. 1 to 3 and 8 to 10, an embedding leveling and compaction management system according to an embodiment of the present invention is used in a multi-layer embankment construction work.
The drainage basin 3 is provided in the bulldozer 5 on which the soil 4 is spread.
(Refer to Fig. 7)
At the initial position above the drainage basin 3 by a distance not less than the predetermined height H along
The swivel beam 9 of the laser level 8 is always marked in the embankment area by the marker 7b on the bulldozer 5.
Filling is performed to fill and level until the intersection with the pits is completed; Vertical shaft connecting work for forming or extending the shaft 12 from the leveled filling layer 13 to the drainage basin 3 is performed as necessary; The mesh image 13I (see FIG. 10) of the flattened surface is created, the rolling pressure of the embankment layer 13 due to the running of the roller roller 42 with the GPS antenna 48, and the position of the GPS antenna 48 accompanying the running of the roller wheel 42. Roller vehicle trajectory image obtained based on GPS survey of change
Creation of 42I, mesh image 13I and roller track image 42
Detection of the number of times of rolling of the roller wheel 42 for each section of the mesh image 13I by comparison of I, and rolling compaction consisting of repetition of the above-described rolling until completion of the required number of times of rolling for all the sections of the mesh image 13I. After raising the laser level 8 along the vertical reference line V by a predetermined leveling thickness h of the embankment layer and positioning the same; The cycle consisting of the work and the raising work is repeated a predetermined number of times.

[0015] The required number of times of rolling is determined by the number of times of rolling required until the degree of compaction of the embankment layer becomes sufficient. The predetermined number of cycles of the leveling work and the vertical shaft connection work, the compaction work, and the raising work as required depends on the height of the land to be built by embankment and the finishing layer portion 16 that is separately subjected to earthwork on the land. (See FIG. 2).

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to FIGS. 1 to 3, the operation of an embodiment of the embankment thickness control system according to the present invention will be described. In order to create a wide flat land in a mountain area as shown in FIG. 2, an embankment having a height of several meters to several tens of meters may be required to fill a valley or the like. In order to finish a large amount of embankment with a uniform soil in such a case, for example, a construction method is used in which the embankment layers 13 having a thickness of about 40 cm are spread and then rolled one after another. In addition, drainage is performed for each embankment layer 13 in order to maintain soil quality that allows efficient compaction over the entire period of the construction.
For this reason, preferably, each embankment layer 13 is formed into a mortar-shaped conical surface, a shaft 12 is provided at the deepest portion of the bottom, and drainage is guided through the shaft 12 to the drainage basin 3 provided on the original ground 1 in advance. Discard outside the embankment area by the drain pipe 2 not invented. However, the shape of each embankment layer 13 is not limited to a mortar-shaped conical surface, and may be planar.

The bulldozer 5 used for leveling has an earthwork plate 6 for spreading the soil 4, and the movement of the lower end of the earthwork plate 6 determines the surface shape of the leveled embankment layer. A marker 7b (see FIG. 7) of the laser receiver 7 is attached to a portion at a predetermined height H from the lower end of the earthwork plate 6 on the bulldozer 5. The laser level 8 is positioned at an initial position above the drainage basin 3 by a distance equal to or more than the predetermined height H along a vertical reference line V passing through the drainage basin 3. The laser level 8 emits a swivel beam 9, which defines a plane.

FIG. 6 is a schematic diagram showing an example of the optical system in the laser level 8. As shown in FIG. 6A, a laser light emitting point 17 on a vertical optical axis, a condenser lens 18,
By rotating the optical system consisting of a pentaprism 19 that bends the laser beam by 90 degrees about its vertical optical axis, a revolving horizontal beam _9H is transmitted, and the revolving forms a planar beam revolving surface. Is done. As shown in FIG. 6 (B), an optical system having a refractive prism 20 which the horizontal beam upward bending an inclined beam 9 _B emitted from the pentagonal prism 19 of FIG. 6 (A), the vertical optical axis is rotated about the beam pivot surface of the cone-shaped conical surface by pivoting of the inclined beam 9 _B is defined.

[0019] FIG. 3 (A), the laser level 8, showing a state defining a beam pivoting plane of the cone-shaped conical surface by sending, for example, slope 2% slope beam 9 _B. The operator 10 of the bulldozer 5 makes a sign on the light receiver 7 fixed to the blue dozer 5.
If traveling keying 7b on the inclined beam 9 _B, the lower end of the earthwork plate 6 bulldozer 5, leveled laying soil 4 at a low position from the predetermined height H by the inclination beam 9 _B. If the initial position is a drainage basin 3 on a vertical reference line V passing through the drainage basin 3
Is equal to H + h (= the height from the lower end of the earthwork plate of the bulldozer to the sign of the light receiver + the predetermined leveling thickness of the embankment layer) from the top surface of the bulldozer 5 in this case. The embankment layer 13a (not shown) has a thickness h from the top surface of the drainage basin 3 at a portion intersecting with the vertical reference line V.
Moreover, by performing to fill laying leveled laying leveling Engineering to pivot surface of the inclined beam 9 _B of the laser level 8 intersects always labeled 7b of the bulldozer 3 by the embankment region intersects the vertical reference line V A mortar-shaped embankment surface having a height h is formed from the top surface of the drainage basin 3 at the portion.

Next, a vertical shaft connecting work for forming a vertical shaft 12 from the leveled embankment layer to the drainage basin 3 is performed as necessary.
Raising is performed by raising the laser level 8 along the vertical reference line V from the initial height by a predetermined leveling thickness h of the embankment layer and positioning. FIG. 4 shows a telescopic support 11 as shown in FIG.
Shows an embodiment in which a laser level 8 is attached. For example, if the support base 11 can be expanded and contracted within a range of 1 to 5 times the thickness h of the predetermined leveling, and the extension length per time of the shaft 12 is set to 5 times the predetermined leveling thickness h, the shaft connection Only needs to be performed once for five leveling works. That is, a cycle of raising the laser level 9 by stretching the support 11 following the leveling work is repeated four times, and a cycle including the leveling work, the shaft connection work, and the raising work is performed once. In the case of the example shown,
In the shaft connection, the layer of the powdered stone 14 and the suction-preventing member 14a are also extended along the extending portion of the corrugated pipe.

[0021] after having raised the laser level 8 by a predetermined laying leveling thickness h, always said pivoting plane of stuttering and and inclined beam 9 _B over the previous fill layer 13a is in the fill region bulldozer 5
If a new embankment layer 13b (not shown) is laid and leveled until it intersects with the sign 7b, the new embankment layer 13b becomes a mortar with a thickness h. .

Further, a vertical shaft connecting work for extending the vertical shaft 12 to the drainage basin 3 to the embankment layer 13b is performed as necessary. Then, raising the laser level 8 along the vertical reference line V by a predetermined leveling thickness h of the embankment layer and positioning it is performed. After that, if the cycle consisting of the leveling work, the vertical shaft connecting work and the raising work as needed is repeated a required number of times, the embankment layer 13 of the mortar can be filled in multiple layers with the thickness h.

In FIG. 2, since the finishing layer 16 on the surface of the embankment land 40 is formed so as to conform to various conditions determined by the facilities provided therein, the leveling thickness of the embankment of the present invention is not necessarily required. There is no need to create a management system.

[0024] In the above description, although a laser beam 9 is inclined beam 9 _B, even horizontal beam 9 _H, except that conical embankment layer 13 becomes horizontal embankment layer 13, similarly It is clear to a person skilled in the art that excellent results can be obtained.

Thus, an object of the present invention is to provide a system for controlling the level of embankment using a laser level.
Is achieved.

According to the present invention, the control accuracy of the leveling thickness of the embankment was about ± 20 cm in the past,
Experiments have confirmed that the size can be improved to 5 cm. In addition, according to the present invention, the spread thickness can be controlled with high accuracy even in the case of an inclined embankment.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The operation of the embankment leveling and compaction management system according to an embodiment of the present invention will be described with reference to the embodiments of FIGS. 1 to 3 and 8 to 10 and the flowchart of FIG.

A drainage basin 3 is previously provided on the original ground 1 in the embankment area, and a laser receiver 7 is provided at a position on the bulldozer 5 having a predetermined height H from the lower end of the earthwork plate 6 of the bulldozer 5 on which the soil 4 is spread.
Attach the sign 7b. The laser receiver 7 can be attached to the earthwork plate 6 of the bulldozer 5 by, for example, a support rod 7a. As shown in step 1201 in FIG. 12, a swivel beam generating laser level is set at an initial height portion along the vertical reference line V passing through the drainage basin 3 and above the drainage basin 3 by the predetermined height H or more. Position 8

Next, the process proceeds to step 1202, where the swiveling beam 9 of the laser level 8 thus positioned, for example, the tilt beam _9B
Until the crossing always crosses the sign 7b on the bulldozer 5 in the embankment area, leveling work including embankment and leveling work for forming the embankment layer 13 is performed. Further, a shaft connection from the drainage basin 3 to the filled embankment layer 13 is formed. The shaft connection includes a case in which the shaft 12 communicating with the drainage basin 3 is extended to the embankment layer 13 spread out just before.

Step 1203 is performed on the leveled embankment layer 13.
Of the compacting work. This includes creating a mesh image 13I of the leveled surface of the embankment layer 13, rolling the embankment layer 13 by running the pressure roller 24 of the roller roller 42 with the GPS antenna 48, and running the roller wheel 42. Roller track image 42 obtained based on the GPS survey of the change of the position of the GPS antenna 48 due to the
Creation of I, mesh image 13I and roller track image 42I
And the detection of the number of times of rolling of the roller wheel 42 with respect to each section of the mesh image 13I. After inquiring the number of times of compaction in step 1204, by returning to step 1203,
Rolling is repeated until rolling is completed a predetermined number of times for all the sections of the mesh image 13I.

FIG. 8 shows an example of a device used in the compaction work, that is, a mesh section storage device 28 for the leveling surface of the embankment layer 13 and a roller wheel trajectory calculating means 29. FIG. 9 shows a roller roller 42 and a GPS antenna 48 mounted thereon.
Further, FIG. 10 shows a display 22 used for visual display of the mesh image 13I and the roller wheel trajectory image 42I.

If the relationship between the number of times of compaction and the density of the embankment layer 13 is established and actual measurement of the density is not necessary, the process proceeds to step 1209 after the completion of the compaction of each embankment layer 13. Step 12
If the required number of embankment layers 13 are not formed in 09, the process returns to step 1201 and raises the laser level 8 along the vertical reference line V by the required leveling thickness h of the embankment layer 13 to position the laser. And a required number of embankment layers consisting of the above-mentioned leveling work and, if necessary,
Repeat for all 13 to complete the desired multilayer embankment.

According to experience, the required leveling thickness h of the embankment layer 13 is
Is about 40 cm, the number of times of compaction by the compaction roller wheel 42 is sufficient about 8 times when the embankment is rubbed and about 6 times when the embankment is soft rock.

[0034] In the description so far, although the laser beam 9 is inclined beam 9 _B, also in the case of a horizontal beam 9 _H may perform the same laying leveling and compaction apparent to those skilled in the art It is. The control system for leveling and compaction of the embankment described above uses the laser level and GPS survey methods, and is necessary for soil management, which has been a problem in the past, without the need for cumbersome measurement of the density of the embankment layer. It is effective in solving the problem of insufficient precision.

The laser level 8 may be raised by a telescopic support 11a as shown in FIG. Also, if two laser levels 8 are mounted on the top of the support base 11a with a height difference equal to the predetermined leveling thickness h of the embankment layer,
As shown in FIG. 3 (B), embankment of a specific height is performed on one side of the laser level 8 and a predetermined level of the embankment layer is formed on the opposite side of the laser level 8 according to the condition of the topography and materials at the site. It is also possible to level the next embankment layer 13 advanced by the thickness h. In this case, the degree of freedom in adjusting the process in the entire embankment work is improved.

The sign 7b of the light receiver 7 in FIG. 7 indicates an upward arrow when the embankment height is insufficient, and indicates a downward arrow when the embankment height is excessive. However, the sign used in the present invention is such that when an embankment having a predetermined leveling thickness h of the embankment layer is formed on the preceding embankment layer 13, the laser level 8 is used.
It is sufficient if the turning beam 9 can be displayed in a manner that the operator 10 can recognize that the turning beam 9 is incident on a predetermined portion of the sign,
It is not limited to the illustrated example.

Referring to FIGS. 8 to 10, the coordinates of the GPS antenna 48 on the roller wheel 42 are determined by the GPS using the fixed station 41.
It can be determined by the relative positioning method of the survey. In the illustrated example, the fixed station 41 has a GPS antenna 43 and a GPS receiver 44.
And a GPS antenna 48 mounted on the roller wheel 42 as a mobile station, and a GPS receiver 50 for each mobile station connected to the roller wheel 42.
It is installed in.

The coordinates of the mobile station GPS antenna 48 are
41 known coordinates and GP at fixed station GPS antenna 43
Received radio wave information of S receiver 44 and GPS of mobile station antenna 48
It is determined from the difference from the received radio wave information of the receiver 50. The transmission modem 45 of the fixed station is for transmitting radio wave information received by the GPS receiver 44, and the reception modem 52 of the mobile station is
This is for receiving the received radio wave information from the PS receiver 44 and adding it to the GPS receiver 50. The position calculating means 27 of the GPS antenna of the roller car shown in FIG.
The position, that is, the coordinates of the GPS antenna 48, which is incorporated in the PS receiver 50, is calculated from the received radio wave information of both antennas and the known coordinates of the fixed station 41.

Conventionally, a specific low-power radio that is not restricted by the Radio Law is used as a transmission path for transmitting and receiving received radio wave information of a GPS satellite for relative positioning between the fixed station 41 and the mobile station 42. However, it is also possible to use digital MCA (micro channel access) or professional radio. In the latter case, the GPS survey can be performed even when the distance between the fixed station and the mobile station is large or when information exchange between one fixed station and three or more mobile stations is required.

However, in the present invention, the GPS on the roller 42
It suffices if the position of the antenna 48 can be measured, and it is not limited to the GPS relative positioning method. Reference numeral 25 in FIG. 8 indicates a GPS satellite group.

When the roller wheel 42 is remotely controlled, the output of the GPS antenna position calculating means 27 is output from the fixed station 41 to display the locus image 42I on the fixed station 41 or the central control room.
To the roller track calculating means 29 in the personal computer 47. The data transmitter 54 and the data receiver 46 in FIG. 9 are for this purpose. When the roller wheel track image 42I is displayed only on the roller wheel 42, the data transmitter 54 and the receiver 46
Can be omitted.

As shown in FIG. 10, the ground to be compacted (compressed area) of the ground 1 is formed of a mesh section group which is divided by a vertical line L and a horizontal line M at an appropriate pitch S, for example, 1 meter pitch. It can be displayed as a mesh image 13I. The compaction area mesh section storage device 28 stores the data of the ground mesh image 13I created separately, and stores the data
7. This is displayed on the display 22 of 55.

The roller vehicle locus calculation means 29 is, for example, a GPS
Based on the output of the antenna position calculating means 27,
The track image 42I of 42 is displayed so as to be superimposed on the ground mesh image 13I. In this way, by monitoring the movement of the locus image 42I of the roller wheel 42, the rolling area of the embankment layer 13 is reduced.
The rolling by the rolling roller 24 can be sequentially detected and monitored. Based on the monitoring, the number-of-compression-compressions detecting / storing means 32 for each mesh section detects the number of times of compaction for each mesh section by, for example, a comparison method, and stores the detection result.

The result of monitoring the running of the roller wheel 42 and the result of detecting the number of times of rolling are displayed on the display 22 by the trajectory / number of times of rolling pressure display means 33 and the color allocating means 34. The trajectory storage device 35 and the work drawing diagram creating means 36 process the information of the number of times of compression and number detection / storage means 32 for each mesh section to create a running trajectory and a work drawing and display them on the display 22.

When the roller wheel 42 is remotely operated, the azimuth of the center line of the roller wheel 42 can be determined by using the display 22 by the roller wheel display means 30 and the travel control means 31 using, for example, the distance between adjacent vertical lines L. Run while matching the center line. In this case, for example, two
By mounting two GPS antennas and calculating the changes in the positions of the two GPS antennas, respectively,
Along with the trajectory of the posture.

The personal computer 55 on the roller wheel 42 in FIG. 8 is the same as the personal computer 47 of the fixed station 41, and the number of times of compaction is monitored online when the operator manually operates the roller wheel 42. Can be.

The displayed number of times of rolling can accurately display the result of rolling of the roller wheel up to the current position for each mesh section in a digital form, and the remote control of the running of the roller wheel is possible. Management becomes possible.

With reference to FIGS. 11 and 12, a description will be given of a case where steps 1206 to 1208 for actually measuring whether or not a required density is obtained upon completion of a predetermined number of compactions of the embankment layer 13 are used. Steps 1206 to 1208 are inspection steps performed as necessary. Embankment layer 13 in step 1206
The required density of the embankment layer 13 is not obtained, and when the required density of the embankment layer 13 is not obtained, the process proceeds from step 1207 to step 1208, for example, after adjusting the water content ratio of the embankment layer 13 by aeration drying, re-rolling until the required density is obtained. Or additionally repeating the compaction. On the basis of re-compaction or additionally repeated compaction,
The required number of times of compaction for the embankment can be modified.

In order to determine whether the embankment layer 13 has the required density or not, a sample of the soil 4 to be embanked is subjected to an indoor standard tamping test to determine the maximum dry density ρ _dmax . The dry density ρ _ds of a sample of the soil 4 taken from the embankment layer 13 after the on-site compaction is measured. The D value is obtained as a ratio (ρ _ds / ρ _dmax ). If the D value is a predetermined standard value, for example, 90% or more, it is assumed that the required density has been obtained (supervised by the Civil Aviation Bureau of the Ministry of Transport and issued by the Port and Airport Construction Technical Service Center, "Airport Civil Works Common Specifications" ”).
Preferably, such actual measurement is performed at a certain frequency, for example, about once a day.

[0050]

As explained in detail above, the filling level and compaction management system of the embankment of the present invention performs leveling management using a laser level, and preferably also performs compaction management using a GPS. Therefore, the following remarkable effects are obtained.

(A) The leveling thickness of the embankment can be managed with high accuracy and orderly and reliably. (B) The embankment with a slope for drainage can be systematically performed while managing it with high precision. (C) In the case of large-scale embankment, drainage of embankment during construction can be secured and high-grade embankment can be completed in a short time. (D) By measuring the position and the trajectory of the compaction roller wheel by GPS surveying, the management of compaction work for the embankment can be saved. (E) It is possible to reduce the frequency of the actual measurement of the embankment density by hand and to shorten the construction period of the embankment work. (F) Compared with the conventional task meter method and pass counter method, the actual condition of the compaction can be clarified. (G) It can be expected to contribute to unmanned compaction work for embankment layers.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an embankment leveling operation according to the present invention.

FIG. 2 is a plan view and a sectional view of an example of embankment construction.

FIG. 3 is an explanatory view of a mortar-shaped embankment leveling work.

FIG. 4 is an enlarged view of a laser level mounting portion.

FIG. 5 is a perspective view of an example of a laser level support base.

FIG. 6 is an explanatory diagram of an example of a laser-level optical system.

FIG. 7 is a front view of an example of a light receiver for a laser beam.

FIG. 8 is a block diagram of an embodiment of a flattening thickness and compaction management system according to the present invention.

FIG. 9 is a schematic explanatory view showing components of the embodiment of FIG. 8;

FIG. 10 is a schematic explanatory view showing the display of the embodiment of FIG. 8;

FIG. 11 is a graph showing the relationship between the water content of soil and dry density.

FIG. 12 is a flow chart of one embodiment of the embankment thickness and compaction management system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Original ground 2 ... Drainage pipe 3 ... Drainage basin 4 ... Soil 5 ... Bulldozer 6 ... Earthwork board 7 ... Receiver 7a ... Support rod 7b ... Signage 8 ... Laser level 9 ... Laser beam 10 ... Operator 11 ... Laser level support Stand 12 ... shaft 13 ... embankment layer 14 ... powdered stone 14a ... suction prevention material 13I ... embankment layer mesh image 15 ... moving stiffener 16 ... finishing layer part 17 ... laser emission point 18 ... condenser lens 19 ... pentaprism 20 ... refraction prism 22 ... Display 23 ... Body 24 ... Rolling roller 25 ... GPS satellites 27 ... Antenna position detecting means 28 ... Segment storage device for mesh image of rolling area 29 ... Roller car trajectory calculating means 30 ... Roller car display means 31 ... Running Control means 32 ... Detection and storage of the number of times of compression of each section of the mesh image 33 ... Track and number of times of display of compression number 34 ... Color allocating means 35 ... Track storage means 36 ... Model drawing creation means 40 ... Filling land 41 ... Fixed station 42 ... Vehicles 43, 48… GPS antennas 44, 50… GPS receiver 45… Transmitting modem 46… Data receiver 47, 55… PC 52… Receiving modem 54… Data transmitter

Claims (11)

[Claims] In the construction of embankment in multiple layers, a drainage basin is provided on the original ground in the embankment area, and a sign of a light receiver is attached to a portion at a predetermined height from the lower end of an earthwork plate on a bulldozer for leveling the soil. A swivel beam generating type laser level is positioned at an initial position above the drainage basin by a distance equal to or greater than the predetermined height along a vertical reference line passing through the basin; Leveling work to always fill and spread until it intersects with the sign on the bulldozer; Perform vertical connecting work to form or extend a shaft from the leveled fill layer to the drainage basin as needed; After raising the laser level along the vertical reference line by a predetermined leveling thickness of the embankment layer and performing a raising operation for positioning; from the leveling operation and a shaft connection and raising operation as required A new cycle The number of repeat composed of fill laid leveling thickness management systems. 2. The management system according to claim 1, wherein said laser level swiveling beam is horizontal and said leveling work forms a horizontal leveling surface of said embankment. 3. The management system according to claim 1, wherein said laser level swiveling beam is transmitted from said laser level at an upward slope, and said beam level defines a virtual conical surface having a bottom vertex at said laser level. And a leveling control system for the embankment, wherein the leveling work forms an embankment leveling surface parallel to the virtual conical surface. 4. The embankment according to claim 1, wherein the leveling thickness of the embankment layer is increased to the extent that compaction of the embankment layer by a compaction roller works effectively. Leveling management system. 5. A construction for embankment in multiple layers, wherein a drainage basin is provided on the original ground in the embankment area, and a sign of a light receiver is attached to a portion at a predetermined height from the lower end of the earthwork plate on the bulldozer for spreading the soil. A swivel beam generating type laser level is positioned at an initial position above the drainage basin by a distance equal to or greater than the predetermined height along a vertical reference line passing through the basin; Leveling work to always fill and spread until it intersects with the sign on the bulldozer; Perform vertical connecting work to form or extend a shaft from the leveled fill layer to the drainage basin as needed; Creation of a mesh image of the leveled surface of the embankment layer, rolling pressure of the embankment layer due to running of a compaction roller car with a GPS antenna, and G of the change in the position of the GPS antenna accompanying the running of the roller car
Creation of a roller track image obtained based on the PS survey,
Detecting the number of times of rolling of the roller wheel for each section of the mesh image by comparing the mesh image and the roller wheel locus image; and repeating the rolling until the required number of times of rolling for all sections of the mesh image is completed. Performing a rolling work comprising: raising the laser level along the vertical reference line by a predetermined leveling thickness of the embankment layer and positioning the laser level; An embankment thickness and compaction management system in which a cycle consisting of a shaft connection, a rolling compaction, and a raising work is repeated a predetermined number of times. 6. The management system according to claim 5, wherein the number of times of rolling of the roller wheel in the rolling mill is detected by comparing the mesh image with the roller wheel locus image for each section of the mesh image. The detection of the passage of the section of the vehicle locus image and the detection of the compaction of the embankment layer section corresponding to the section and the detection and update of the number of times of compaction are performed and stored by updating and filling. Consolidation management system. 7. The management system according to claim 5, wherein
An embedding spread thickness and compaction management system in which each section of a mesh image that stores a leveled surface of the embankment layer is colored in accordance with the number of times of compaction of the section. 8. A management system according to any one of claims 5 to 7, wherein a fixed station for GPS surveying whose position is known is provided.
The filling thickness and compaction management of the embankment in which the GPS antenna of the compaction roller car is a mobile station, and a transmission path of the received radio wave information of the GPS satellite for relative positioning is provided between the fixed station and the mobile station. system. 9. The management system according to claim 5, wherein the mesh image is defined by a plurality of vertical and horizontal lines having a constant pitch in a rectangular coordinate system related to a ground coordinate system of the embankment layer. And a compaction management system for filling the embankment by running the roller wheel along a line on the ground coordinate system corresponding to the vertical line or the horizontal line. 10. The management system according to any one of claims 5 to 9, wherein after confirming the completion of compaction a predetermined number of times for all the sections of the mesh image, the respective layers of the laser level along the vertical reference line are confirmed. Before raising and positioning only the spread thickness, the D value (D = ρ _ds / ρ _dmax , ρ _ds is the dry density measured in the field, ρ _dmax is the room) Measure the maximum dry density by the standard tamping test) to confirm the strength of the embankment, and if the strength is insufficient, level the embankment by repeating rolling compaction until a predetermined D value is obtained. Thickness and compaction management system. 11. The control system according to claim 10, wherein the required number of times of compaction for the leveled embankment layer is corrected based on the additionally repeated compaction times, and the leveling thickness and compaction of the embankment. Consolidation management system.