CN113982011A - Open caisson heading machine guiding system and method based on static inclinometer - Google Patents
Open caisson heading machine guiding system and method based on static inclinometer Download PDFInfo
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- CN113982011A CN113982011A CN202111239089.3A CN202111239089A CN113982011A CN 113982011 A CN113982011 A CN 113982011A CN 202111239089 A CN202111239089 A CN 202111239089A CN 113982011 A CN113982011 A CN 113982011A
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- 230000003068 static effect Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 7
- 230000005641 tunneling Effects 0.000 abstract description 10
- 238000011161 development Methods 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
Abstract
The invention relates to a sinking well tunneling machine guide system based on a static inclinometer and a method thereof. The invention solves the technical problems of complicated attitude measurement process, poor precision and high cost of the underwater development machine.
Description
Technical Field
The invention relates to the field of open caisson tunneling, in particular to an open caisson tunneling machine guiding system and method based on a static inclinometer.
Background
The underwater open caisson heading machine is a special engineering machine, and has the functions of excavating underwater rock soil, discharging muddy water mixture, detecting and controlling excavation contour, detecting open caisson depth and attitude and the like.
At present, the bridge pier of a large wading bridge is mostly constructed by a multi-cabin open caisson method, and the bridge pier has the advantages of low cost, good quality and the like. As eyes of the open caisson heading machine, the guiding system is used for guiding the heading machine to adjust the attitude in the heading process so as to ensure efficient and high-quality completion of the heading operation, but the general working environment of the underwater open caisson heading machine is underwater, and the method for directly irradiating and measuring the laser adopted by the guiding system is not applicable any more, so that the attitude of the heading machine and the attitude of the open caisson can only be measured by adopting a manual measurement method at the present stage for the underwater operation, and the method is poor in measurement accuracy, time-consuming, labor-consuming and incapable of continuous measurement.
Aiming at the problems of complicated attitude measurement process, poor precision and high cost of an underwater development machine in the related technology, no effective solution is provided at present.
Therefore, the inventor provides a guide system of the open caisson heading machine based on the static inclinometer and a method thereof by virtue of experience and practice of related industries for many years, so as to overcome the defects of the prior art.
Disclosure of Invention
The invention aims to provide a sinking well tunneling machine guiding system based on a static inclinometer and a method thereof, which are simple in structure, convenient to operate, suitable for an underwater environment, high in measurement precision, labor-saving and material-saving, capable of realizing real-time monitoring of the attitude of a sinking well and effectively solving the problem that the attitude measurement of the sinking well tunneling machine cannot be accurate and automatic.
The purpose of the invention can be realized by adopting the following technical scheme:
the invention provides a static inclinometer-based open caisson heading machine guide system, which comprises two inclinometers arranged on the inner wall of each open caisson segment, wherein: the two inclinometers arranged on each section of the sinking well pipe sheet are respectively positioned on two straight lines in the vertical direction, so that the inclinometers in the sinking well form two longitudinal rows in the vertical direction.
In a preferred embodiment of the present invention, the two inclinometers arranged on each caisson tubing piece have the same axial height on the caisson tubing piece.
In a preferred embodiment of the present invention, a connection line between the two inclinometers on each segment of the well segment and the axis of the caisson segment forms a preset included angle in the circumferential direction of the caisson segment.
In a preferred embodiment of the present invention, a plurality of mounting brackets are disposed on the inner wall of the caisson segment, and each inclinometer is fixed to the inner wall of the caisson segment through the mounting brackets.
In a preferred embodiment of the present invention, the mounting bracket includes a first mounting plate and a second mounting plate, the second mounting plate is fixed on the inner wall of the open caisson segment, the first mounting plate is connected with the second mounting plate, and the inclinometer is disposed on the top of the first mounting plate.
In a preferred embodiment of the present invention, the first mounting plate is disposed along a horizontal direction, one end of the first mounting plate is connected to a side wall of the second mounting plate, and the other end of the first mounting plate extends toward an axial center of the open caisson segment.
In a preferred embodiment of the present invention, the Z-axis of the inclinometer is disposed downward along the vertical direction, and the X-axis or the Y-axis of the inclinometer is disposed toward the axial center of the open caisson segment.
In a preferred embodiment of the present invention, the open caisson heading machine guidance system based on the static inclinometers further includes an upper computer, and the detection signal output end of each inclinometer is connected to the detection signal receiving end of the upper computer through a concentrator.
In a preferred embodiment of the present invention, the hub is a 485 hub.
The invention provides a static inclinometer-based open caisson heading machine guiding method, which comprises the following steps:
step S1: establishing a coordinate system by taking any inclinometer on the first section of open caisson segment from top to bottom as an origin;
step S2: obtaining coordinates of each inclinometer in the coordinate system;
step S3: calculating the actual measurement axis coordinates of the open caisson segment according to the coordinates of each inclinometer;
step S4: and calculating the vertical deviation and the verticality of the open caisson segment according to the actual measurement axis coordinate and the pre-measured initial axis coordinate of the open caisson segment.
In a preferred embodiment of the present invention, in the step S2, a straight line is respectively fitted to each inclinometer arranged in two longitudinal rows, so as to respectively obtain coordinates of each continuous point on the two fitted straight lines.
In a preferred embodiment of the present invention, the inclination angle of the caisson segment is obtained according to the roll angle and the pitch angle measured by the inclinometer.
From the above, the open caisson heading machine guiding system based on the static inclinometer and the method thereof have the characteristics and advantages that: the inner wall of each section of open caisson segment is provided with two inclinometers, a coordinate system can be established in the open caisson through attitude information detected by each inclinometer and the height difference between the arrangement position of the inclinometer on the open caisson segment and two adjacent inclinometers in the longitudinal direction, which can be obtained through pre-measurement, the two inclinometers arranged on each section of open caisson segment are respectively positioned on two straight lines in the vertical direction, so that the inclinometers in the open caisson form two longitudinal rows in the vertical direction, the position information of all points on the open caisson segment can be obtained through the established coordinate system, the attitude information of the open caisson, such as the verticality, the offset direction and the like can be obtained, and the purpose of monitoring the open caisson attitude in real time is achieved.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: the invention discloses a schematic installation position diagram of a guide system of an open caisson heading machine based on a static inclinometer.
FIG. 2: the invention is a structural schematic diagram of an inclinometer in a guide system of an open caisson heading machine based on a static inclinometer.
FIG. 3: the invention discloses a static inclinometer-based open caisson heading machine guide system, which is a schematic diagram of the installation positions of two inclinometers on a section of open caisson segment.
FIG. 4: the invention relates to a control structure block diagram of a guide system of an open caisson heading machine based on a static inclinometer.
The reference numbers in the invention are:
1. an inclinometer; 2. Mounting a bracket;
201. a first mounting plate; 202. A second mounting plate;
3. open caisson segment; 4. An upper computer;
5. and a hub.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
Implementation mode one
As shown in fig. 1 to 3, the present invention provides a sinking and tunneling machine guiding system based on a static inclinometer, which includes a plurality of inclinometers 1, two inclinometers 1 are disposed on the inner wall of each sinking pipe segment 3, wherein: the two inclinometers 1 arranged on each section of open caisson segment 3 are respectively positioned on two straight lines in the vertical direction, so that the inclinometers 1 in the open caisson form two longitudinal rows in the vertical direction.
The invention is characterized in that two inclinometers 1 are arranged on the inner wall of each open caisson segment 3, the attitude information detected by each inclinometer 1 and the preset position of the inclinometer 1 on the open caisson segment 3 (namely, the distance between the inclinometer 1 and the lower edge of the open caisson segment 3 installed with the inclinometer 1 is a, the distance between the inclinometer 1 and the lower edge of the open caisson segment 3 installed with the inclinometer is b) and the height difference between two longitudinally adjacent inclinometers can be measured, a coordinate system can be established in the open caisson, because the two inclinometers 1 arranged on each open caisson segment 3 are respectively positioned on two straight lines in the vertical direction, so that the inclinometers 1 in the open caisson form two longitudinal rows in the vertical direction, the established coordinate system can know the position information of all points on the open caisson segment 3, and can obtain the attitude information of the open caisson, offset direction and the like, the purpose of monitoring the open caisson posture in real time is achieved. Because the attitude information of the open caisson can be monitored in real time only by the plurality of inclinometers 1 without adopting means such as laser and the like, the attitude information of the open caisson can be accurately collected even if the open caisson is tunneled underwater, the problem that the underwater environment cannot be directly irradiated and measured by laser is solved, and therefore the open caisson attitude monitoring system is suitable for the tunneling operation of the underwater environment, improves the measurement accuracy, does not need workers to go into the well for measurement, and greatly improves the accuracy and the automation degree of the attitude measurement of the underwater tunneling machine.
Further, as shown in fig. 1, the two inclinometers 1 arranged on each open caisson segment 3 are at the same position (i.e. the axial heights of the two inclinometers 1 on the open caisson segment 3 are the same).
Further, as shown in the figure3, the connecting line of the two inclinometers 1 on each section of the open caisson segment 3 and the axis of the open caisson segment 3 forms a preset included angle in the circumferential direction of the open caisson segment 3
In an alternative embodiment of the present invention, as shown in fig. 1 and 2, a plurality of mounting brackets 2 are arranged on the inner wall of the caisson segment 3, and each inclinometer 1 is fixed on the inner wall of the caisson segment 3 through the mounting brackets 2. Through the setting of installing support 2, guarantee that inclinometer 1 has good stability in the open caisson.
Specifically, as shown in fig. 2, the mounting bracket 2 includes a first mounting plate 201 and a second mounting plate 202, the first mounting plate 201 is disposed along the horizontal direction, the second mounting plate 202 is disposed along the vertical direction, a side wall of the second mounting plate 202 is fixed on the inner wall of the caisson segment 3, one end of the first mounting plate 201 is connected with the middle position of another opposite side wall of the second mounting plate 202, the other end of the first mounting plate 201 extends towards the axial center direction of the caisson segment 3, and the inclinometer 1 is disposed at the top of the first mounting plate 201, so that the inclinometer 1 can be mounted in the horizontal direction in the caisson. The installation of the inclinometer 1 in the horizontal direction is as follows: the Z axis of the inclinometer 1 is arranged downwards along the vertical direction (namely, the direction of the Z axis is the same as the gravity direction), and the X axis or the Y axis of the inclinometer 1 is arranged towards the axis direction of the open caisson segment 3.
In an optional embodiment of the present invention, as shown in fig. 4, the guidance system of the open caisson heading machine based on the static inclinometer further includes an upper computer 4, the upper computer 4 is disposed in a control room on the ground, the detection signal output end of each inclinometer 1 is connected to the detection signal receiving end of the upper computer 4 through a concentrator 5, each inclinometer 1 transmits the detected data to the upper computer 4, and the upper computer 4 can obtain information of the offset degree, the offset amount, the offset direction, and the like of the open caisson, thereby achieving the purpose of monitoring the attitude of the open caisson in real time.
Further, the hub 5 may be, but is not limited to, a 485 hub.
The open caisson heading machine guide system based on the static inclinometer has the characteristics and advantages that:
the two inclinometers 1 arranged on each section of open caisson segment 3 are respectively positioned on two straight lines in the vertical direction, so that the inclinometers 1 in the open caisson form two longitudinal rows in the vertical direction, a coordinate system can be established in the open caisson, the position information of all points on the open caisson segment 3 can be obtained through the established coordinate system, and the attitude information of the open caisson, such as the verticality, the offset direction and the like can be obtained, so that the aim of monitoring the attitude of the open caisson in real time is fulfilled.
The open caisson heading machine guiding system based on the static inclinometers can monitor the attitude information of the open caisson in real time only through the inclinometers 1, and can accurately acquire the information of the open caisson even if heading operation is carried out underwater, so that the problem that the underwater environment cannot adopt laser to directly irradiate and measure is solved, the open caisson heading machine guiding system is suitable for heading operation of the underwater environment, the measurement precision is improved, the worker is not required to go into the well for measurement, and the accuracy and the automation degree of the attitude measurement of the underwater heading machine are greatly improved.
The sinking well tunneling machine guiding system based on the static inclinometer can realize the automatic guiding function of the tunneling machine, bear the pressure of muddy water in a sinking well, do not need manual operation in the well, directly display the detection result outwards, and greatly improve the real-time performance and the automation degree.
Second embodiment
The invention provides a static inclinometer-based open caisson heading machine guiding method, which comprises the following steps:
step S1: establishing a coordinate system by taking any inclinometer 1 on a first section of open caisson segment 3 (namely, the lowermost open caisson segment 3 in the open caisson) from top to bottom as an original point;
step S2: obtaining the coordinates of each inclinometer 1 in a coordinate system;
step S3: calculating the actual measurement axis coordinates of the open caisson segment 3 according to the coordinates of each inclinometer 1;
step S4: and calculating the vertical deviation and the verticality of the open caisson segment 3 according to the actual measurement axis coordinate and the initial axis coordinate of the open caisson segment 3 measured in advance.
Further, before the step S1, the method further includes a step S01: two inclinometers 1 are sequentially arranged on the inner wall of each section of open caisson segment 3 from bottom to top. The installation and application of the inclinometer 1 meet the following conditions: the two inclinometers 1 on each section of the open caisson segment 3 are respectively positioned on two straight lines in the vertical direction, so that the inclinometers 1 in the open caisson form two longitudinal rows in the vertical direction; the two inclinometers 1 on each section of open caisson segment 3 are positioned at the same height, the distance between the inclinometer 1 and the lower edge of the open caisson segment 3 installed on the same section of open caisson segment is a, and the distance between the inclinometer 1 and the lower edge of the open caisson segment 3 installed on the same section of open caisson segment is b; the connecting line of the two inclinometers 1 on each section of open caisson segment 3 and the axis of the open caisson segment 3 forms a preset included angle in the circumferential direction of the open caisson segment 3
In an alternative embodiment of the present invention, in step S2, straight line fitting is performed on each inclinometer 1 arranged in two longitudinal rows, so as to obtain the coordinates of each continuous point on the two fitted straight lines.
In an alternative embodiment of the invention, the inclination angle of the open caisson segment 3 is obtained according to the roll angle β and the pitch angle α measured by the inclinometer 1.
One specific embodiment of the invention is: the first section of open caisson segment 3 from bottom to top can be set as a first open caisson segment, the inclinometer of the first longitudinal row on the first open caisson segment can be marked as q11, and the inclinometer of the second longitudinal row on the first open caisson segment can be marked as q 21; by analogy, the inclinometer of the first longitudinal row on the last open caisson segment (i.e., the topmost open caisson segment 3) can be designated as q1n, and the inclinometer of the second longitudinal row on the last open caisson segment can be designated as q2 n. The first longitudinal row of inclinometers 1 on the last section of open caisson segment is taken as an original point, the tangential direction in the circumferential direction of the last section of open caisson segment is taken as a Y axis (the direction towards the second longitudinal row of inclinometers on the last section of open caisson segment is positive), the vertical direction is a Z axis (the vertical downward direction is positive), the axial direction of the last section of open caisson segment is taken as an X axis (the direction towards the axial center is positive), and a coordinate system D is established.
The (n-1) th inclinometer 1 on the first longitudinal row has the coordinate (x)n-1，yn-1，zn-1) Then, then
xn-1＝xn+(zn-1-zn)×tan(αn-1-αn)；
yn-1＝yn+(zn-1-zn)×tan(βn-1-βn)；
Wherein a is the distance between the inclinometer and the lower edge of the open caisson segment installed on the inclinometer; b is the distance between the inclinometer and the lower edge of the open caisson segment installed on the inclinometer; alpha is a pitch angle measured by an inclinometer; beta is the roll angle beta measured by the inclinometer.
The inclinometers in the first vertical row and the inclinometers in the second vertical row in the coordinate system can be subjected to linear fitting respectively by adopting a linear fitting mode, and the coordinates of each continuous point on the first vertical row and the second vertical row can be obtained respectively by the obtained linear fitting equation. When the excavation depth z is equal to zpThen, the coordinate of the inclinometer 1 in the first longitudinal row on the first section of open caisson segment 3 is (x)1p，y1p，zp) The coordinate of the inclinometer 1 in the second longitudinal row on the first section of open caisson segment 3 is (x)2p，y2p，zp)。
When the excavation depth z is equal to zpThen, the circle center O of the section of the first section of open caisson segment 3 is excavatedpCan be noted as (x)op，yop，zp) Then, the specific calculation formula is:
n＝2×(x1p-c1)×c2-2×y 1p④；
wherein: c. C1、c2M, n and q are formula codes set for simplifying subsequent formulas; r represents the radius of the open caisson segment.
When the excavation depth is 0, the circle center coordinate of the initial wellhead excavation section can be recorded as (x'op，y'op，0)；
When the depth of excavation is zpThe circle center coordinate of the excavated section can be recorded as (x)op，yop，zp) The vertical deviation in the X-axis direction is Δ1＝|xop-x'opThe vertical deviation in the y-axis direction is Δ2＝|yop-y'opIf the perpendicularity of the open caisson segment 3 is:
according to the inclination angle information collected by the inclinometer 1, when the depth of the inclinometer 1 in the open caisson is zpThe roll angle β of the inclinometer 1 and the pitch angle α of the inclinometer 1.
When the depth of excavation is z ═ zpThe first longitudinal row of inclinometers 1 on the first sinking web has the coordinates (x) on the excavated section1p，y1p，zp) The circle center O of the section excavated on the first open caisson segmentpHas the coordinates of (x)op，yop，zp) (ii) a When the excavation depth is z ═ 0, the circle center coordinate of the initial wellhead excavation section is (x'op，y'op0), and the coordinates of the inclinometer 1 of the first longitudinal row at the initial wellhead are the origin coordinates (0, 0, 0), then when the excavation depth is z ═ zpWhen the open caisson is placed from the well mouth, the open caisson segment 3 at the bottom in the open caisson rotates around the central axis of the open caisson at the angle
Wherein r represents the radius of the open caisson segment.
The open caisson heading machine guiding method based on the static inclinometer has the characteristics and advantages that:
according to the open caisson heading machine guiding method based on the static inclinometers, a coordinate system can be established in the open caisson through the arrangement positions of the inclinometers 1 on the open caisson segment 3, so that the position information of all points on the open caisson segment 3 can be obtained through the established coordinate system, the attitude information of the open caisson, such as the verticality, the offset direction and the like, can be obtained, and the purpose of monitoring the open caisson attitude in real time is achieved.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (12)
1. The utility model provides an open caisson entry driving machine guide system based on static inclinometer which characterized in that, open caisson entry driving machine guide system based on static inclinometer is including setting up two inclinometers on the inner wall of every section of open caisson section of jurisdiction, wherein: the two inclinometers arranged on each section of the sinking well pipe sheet are respectively positioned on two straight lines in the vertical direction, so that the inclinometers in the sinking well form two longitudinal rows in the vertical direction.
2. The static inclinometer based open caisson heading machine guidance system of claim 1, wherein the axial height of the two inclinometers arranged on each section of the open caisson tubing piece is the same.
3. The static inclinometer-based open caisson heading machine guidance system according to claim 1, wherein the connecting line between the two inclinometers on each segment of the well pipe sheet and the axis of the open caisson pipe sheet forms a preset included angle in the circumferential direction of the open caisson pipe sheet.
4. The static inclinometer-based open caisson heading machine guidance system according to claim 1, wherein a plurality of mounting brackets are arranged on the inner wall of the open caisson segment, and each inclinometer is fixed on the inner wall of the open caisson segment through a mounting bracket.
5. The static inclinometer based open caisson heading machine guidance system of claim 4, wherein the mounting bracket comprises a first mounting plate and a second mounting plate, the second mounting plate is fixed on the inner wall of the open caisson segment, the first mounting plate is connected with the second mounting plate, and the inclinometer is arranged on top of the first mounting plate.
6. The static inclinometer-based open caisson heading machine guidance system of claim 5, wherein the first mounting plate is arranged in the horizontal direction, one end of the first mounting plate is connected with the side wall of the second mounting plate, and the other end of the first mounting plate extends towards the axial center of the open caisson segment.
7. The static inclinometer based open caisson heading machine guidance system according to claim 1 or 5, wherein the Z axis of the inclinometer is arranged downwards along the vertical direction, and the X axis or the Y axis of the inclinometer is arranged towards the axial center of the open caisson segment.
8. The static inclinometer-based open caisson heading machine guide system according to claim 1, further comprising an upper computer, wherein the detection signal output end of each inclinometer is connected with the detection signal receiving end of the upper computer through a concentrator.
9. The static inclinometer-based open caisson heading machine guidance system of claim 8, wherein the hub is a 485 hub.
10. A method for guiding a sinking machine based on a static inclinometer is characterized by comprising the following steps:
step S1: establishing a coordinate system by taking any inclinometer on the first section of open caisson segment from top to bottom as an origin;
step S2: obtaining coordinates of each inclinometer in the coordinate system;
step S3: calculating the actual measurement axis coordinates of the open caisson segment according to the coordinates of each inclinometer;
step S4: and calculating the vertical deviation and the verticality of the open caisson segment according to the actual measurement axis coordinate and the pre-measured initial axis coordinate of the open caisson segment.
11. The method according to claim 10, wherein in step S2, a straight line is fitted to each inclinometer arranged in two longitudinal rows, so as to obtain the coordinates of each continuous point on the two fitted straight lines.
12. The static inclinometer based caisson heading machine guiding method according to claim 10, wherein the inclination angle of the caisson segment is obtained according to roll angle and pitch angle measured by the inclinometer.
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| CN202111239089.3A CN113982011A (en) | 2021-10-25 | 2021-10-25 | Open caisson heading machine guiding system and method based on static inclinometer |
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| CN202111239089.3A CN113982011A (en) | 2021-10-25 | 2021-10-25 | Open caisson heading machine guiding system and method based on static inclinometer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2319990A2 (en) * | 2002-04-04 | 2011-05-11 | Gebr. van Leeuwen Harmelen B.V. | Method and system for placing at least one foundation element in the ground |
| CN205532581U (en) * | 2016-01-29 | 2016-08-31 | 徐州市市政设计院有限公司 | Open caisson location automatic measuring device |
| CN109579789A (en) * | 2018-12-26 | 2019-04-05 | 北京中煤矿山工程有限公司 | Shaft of vertical well deflection monitoring method based on obliquity sensor |
| CN113309130A (en) * | 2021-07-01 | 2021-08-27 | 中建地下空间有限公司 | Open caisson controllable sinking construction method |
-
2021
- 2021-10-25 CN CN202111239089.3A patent/CN113982011A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2319990A2 (en) * | 2002-04-04 | 2011-05-11 | Gebr. van Leeuwen Harmelen B.V. | Method and system for placing at least one foundation element in the ground |
| CN205532581U (en) * | 2016-01-29 | 2016-08-31 | 徐州市市政设计院有限公司 | Open caisson location automatic measuring device |
| CN109579789A (en) * | 2018-12-26 | 2019-04-05 | 北京中煤矿山工程有限公司 | Shaft of vertical well deflection monitoring method based on obliquity sensor |
| CN113309130A (en) * | 2021-07-01 | 2021-08-27 | 中建地下空间有限公司 | Open caisson controllable sinking construction method |
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