A device and method for detecting segment displacement of a deep well water application operation

Abstract

The application relates to a device for detecting the displacement of a pipe section of a deep well in a water construction operation, which comprises a pipe section used for forming an initial deep well wall, a first fixed wire hanging point arranged above the deep well, a second wire hanging point arranged on the inner side of the pipe section and descending synchronously with the pipe section, a wire with one end fixed to the second wire hanging point and the other end connected to a wire releasing device after passing through the first wire hanging point, the verticality of the wire between the first wire hanging point and the second wire hanging point being less than 0.1 / 1000 mm, and a scanning device used for measuring two detection points of the wire part above the deep well to obtain the horizontal distance between the two detection points. The application also relates to a method for detecting the displacement of a pipe section, which comprises monitoring the vertical position (depth) and horizontal position of the initial pipe section in the construction process, obtaining the verticality and other parameters of the whole deep well by using a theodolite and the principle of equal proportion, and being not influenced by the working condition of the deep well and the diameter of the deep well.

Description

Technical Field

[0001] This invention relates to the field of deep well verticality measurement technology, and in particular to a device and method for detecting the displacement of segments during deep well construction in water. Background Technology

[0002] The settlement method for deep well construction is being used more and more widely in underground space development. In order to ensure that the excavated lining segments meet the engineering quality requirements, it is necessary to keep track of the horizontal displacement of the initial ring segments during the settlement process of the lining, so as to track parameters such as the verticality of the deep well.

[0003] In existing technologies, methods for measuring the verticality of two adjacent tunnel segments at the wellhead location suffer from problems such as large cumulative errors, low accuracy, and data lag, making it impossible to accurately grasp construction parameters in real time. This is especially true when deep well tunneling machines are conducting underwater construction operations, where the presence of groundwater and complex working environments limit the effectiveness of existing measurement methods. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a device and method for detecting the displacement of tunnel segments during deep well construction in water. This method is unaffected by the working conditions of deep well operations, is particularly suitable for construction in water, and offers high measurement accuracy.

[0005] The technical solution adopted in this invention is as follows:

[0006] A device for detecting the displacement of tunnel segments during deep well construction in water includes tunnel segments used to form the initial deep well wall, and also includes a device for measuring the tunneling depth.

[0007] A first hanging point with a fixed position is set above the deep well, and a second hanging point that descends synchronously with it is set inside the segment; one end of the hanging line is fixed to the second hanging point, and the other end passes around the first hanging point and is connected to the line-laying device; the verticality of the hanging line between the first hanging point and the second hanging point does not exceed 0.1 / 1000 mm;

[0008] It also includes a scanning device for measuring two detection points on the surface portion of the suspended wire leaking out of the deep well to obtain the horizontal distance between the two detection points.

[0009] The further technical solution is as follows:

[0010] The first hanging point is formed by a hanging pulley and is fixedly set above the wellhead; the line-laying device is formed by a steering pulley and is used as the steering fulcrum of the hanging line, and the other end of the hanging line passes around the steering pulley and is connected to a plumb bob.

[0011] The second hanging point is located at one end of the hanging post, which is horizontally set, and the other end is connected to the inner wall of the segment.

[0012] The length of the hanging post is 0.5-5 meters.

[0013] The second hanging point is located on the support of the tunneling machine body at the bottom of the deep well, and the support of the tunneling machine body is connected to the tunnel segment.

[0014] The scanning device is a theodolite.

[0015] A method for detecting the displacement of tunnel lining segments during deep well construction in water includes the following steps:

[0016] Install the hanging wire:

[0017] A first hanging point and a wire-laying device are set above the deep well, and a second hanging point is set inside the pipe segment that descends synchronously with it.

[0018] Connect one end of the hanging line to the second hanging point, and the other end around the first hanging point and connect it to the line feeding device to tighten the hanging line; adjust the position of the first hanging point so that the perpendicularity of the hanging line between the first and second hanging points does not exceed 0.1 / 1000 mm, and then fix the position of the first hanging point;

[0019] Displacement Measurement: During tunneling, the tunnel segments move downwards. Using the vertical line passing through the first anchor point as the measurement benchmark, the first and second detection points of the above-ground portion of the anchor line protruding from the deep well are taken. The horizontal lateral distances a and b from the two detection points to the measurement benchmark are measured using a theodolite. The vertical height A between the two detection points is scanned, and the horizontal lateral distance x = |ab| between the two detection points is calculated. The horizontal lateral displacement X = xB / A of the tunnel segment is calculated, where B is the vertical distance between the first and second anchor points, measured by the tunneling depth measuring device.

[0020] Rotate the theodolite's measuring point position 90° around the first hanging point, repeat the displacement measurement steps, and measure the horizontal longitudinal displacement of the segment Y = yB / A, where y is the horizontal longitudinal distance between the two measuring points.

[0021] The beneficial effects of this invention are as follows:

[0022] This invention is unaffected by deep well operation conditions, making it particularly suitable for underwater construction. Furthermore, it is unaffected by the diameter of the deep well, allowing for real-time monitoring of the vertical (depth) and horizontal position of the initial segments throughout the entire construction process, thereby obtaining parameters such as the verticality of the entire caisson.

[0023] The method of this invention is simple to operate, safe, reliable, low in cost, and provides high accuracy in measurement results. It meets the needs of tracking the construction status of automated, unmanned deep well boring machines operating underwater. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the structure of the present invention.

[0025] Figure 2 This is a schematic diagram illustrating the principle of the measurement method of the present invention.

[0026] Figure 3 This is a schematic diagram illustrating the principle of the top-view measurement method of the present invention.

[0027] In the diagram: 1. Hanging line; 101. Hanging line pulley; 102. Steering pulley; 2. Plumb bob; 3. Theodolite; 4. Deep well; 401. Segment; 5. Hanging line post; S1. First inspection point; S2. Second inspection point; S3. First hanging line point; S4. Second hanging line point. Detailed Implementation

[0028] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, this embodiment of a device for detecting the displacement of tunnel segments during deep well construction in water includes tunnel segments 401, which are used to form the initial well wall of the deep well 4, and a tunneling depth measuring device.

[0030] A first hanging point S3 with a fixed position is set above the deep well 4; a second hanging point S4 that descends synchronously with the segment 401 is set inside the segment 401.

[0031] One end of the hanging line 1 is fixed to the second hanging point S4, and the other end passes around the first hanging point S3 and is connected to the line-releasing device; the perpendicularity of the hanging line 1 between the first hanging point S3 and the second hanging point S4 does not exceed 0.1 / 1000 mm.

[0032] It also includes a scanning device, which is used to measure two detection points on the surface section of the well 4 where the hanging line 1 leaks out, in order to obtain the horizontal distance between the two detection points.

[0033] Specifically, the scanning device is a theodolite 3.

[0034] Specifically, the tunneling depth measuring device is installed on the tunneling machine body and records the tunneling depth as the tunneling machine moves down.

[0035] Specifically, the first hanging point S3 is formed by the hanging pulley 101, which is fixedly set above the wellhead; the line laying device is formed by the steering pulley 102, which is used as the steering fulcrum for hanging line 1, and the other end of hanging line 1 passes around the steering pulley 102 and is connected to a plumb bob 2.

[0036] Specifically, the second hanging point S4 can be set in at least two forms:

[0037] 1) The second hanging point S4 is located at one end of the hanging post 5. The hanging post 5 is set horizontally, and the other end is connected to the inner wall of the pipe segment 401.

[0038] Specifically, the length of the hanging post 5 is 0.5-5 meters.

[0039] 2) The second hanging point S4 is located on the support of the tunneling machine body at the bottom of the deep well 4. The support of the tunneling machine body is connected to the segment 401.

[0040] During the tunneling process, the second hanging point S4 is not affected by whether there is groundwater in the deep well.

[0041] This embodiment of a method for detecting the displacement of tunnel lining segments during deep well construction in water includes the following steps:

[0042] Preparations for installing the wiring:

[0043] During deep well construction, after the segment 401 is installed in place, it is convenient to check the position, depth and other indicators on the ground to ensure that the initial installation of the segment 401 meets the design requirements.

[0044] Hanging posts 5 are installed on the inner wall of segment 401.

[0045] Install the hanging wire:

[0046] A first hanging point S3 and a wire-laying device are set above the deep well 4, and a second hanging point S4 is set at the outer end of the hanging post 5;

[0047] Specifically, the first hanging point S3 is set on the hanging pulley 101, and the wire feeding device adopts a steering pulley that is horizontally spaced from the hanging pulley 102, which is used to form the steering fulcrum for hanging the wire.

[0048] Connect one end of the hanging line 1 to the second hanging point S4, and then pass the other end around the first hanging point S3 of the hanging pulley 101 and then around the steering pulley 102. Then tie the plumb bob 2 to the end of the hanging line 1 to make the hanging line 1 taut.

[0049] Adjust the position of the first hanging point S3 so that the perpendicularity of the hanging line 1 between the first hanging point S3 and the second hanging point S4 does not exceed 0.1 / 1000 mm, and then fix the position of the first hanging point S3.

[0050] Specifically, steel wire can be used for hanging line 1.

[0051] Displacement measurement:

[0052] During the deep well excavation operation, the second hanging point S4 on the hanging column 5 descends synchronously with the lining segment 401. With the hanging point S3 remaining unchanged, the verticality of the hanging line 1 between the two hanging points S3 and S4 changes.

[0053] like Figure 2As shown, using the perpendicular line passing through the first hanging point S3 as the measurement benchmark, the first detection point S1 and the second detection point S2 are taken on the ground section of the hanging line 1 where the deep well 4 is exposed. The horizontal lateral distances a and b from the two detection points to the measurement benchmark are measured using the theodolite 3. The vertical height A between the two detection points is scanned using the theodolite 3 (within the vertical distance B between S3 and S4, points S1 and S2 are taken on the ground section of the hanging line 1 where the deep well is exposed, and the vertical height A of this section is used as the measurement benchmark, that is, the horizontal distances corresponding to distance A are a and b respectively). The horizontal lateral distance x between the two detection points is calculated as |ab|. According to the principle of similar triangles, the horizontal lateral displacement X of the segment 401 is calculated as X = xB / A, where B is the vertical distance between the first hanging point S3 and the second hanging point S4, which can be measured by the tunneling depth measuring device.

[0054] Adjust the measuring position of the theodolite 3 by rotating it 90° around the first hanging point S3, as follows. Figure 3 As shown. The displacement measurement steps were repeated to measure the horizontal longitudinal displacement of segment 401, Y = yB / A, where y is the horizontal longitudinal distance between the two detection points;

[0055] like Figure 3 As shown in the figure, the X-axis and Y-axis directions are the horizontal and vertical directions, respectively.

[0056] According to the progress of deep well construction, measurements should be taken 1 to 2 times a day using the method described above.

[0057] Those skilled in the art will understand that as the cable is lowered into the well, the first detection point S1 and the second detection point S2 are not absolute measurement points in each measurement. In fact, by measuring any two detection points on the cable above the well (ensuring that the vertical distance between the two is consistent in each measurement), the horizontal offset distance of the entire cable (the second cable point S4 relative to the first cable point S3) can be calculated by using the principle of proportionality, thereby obtaining the offset of the segment 401 and the deep well 4.

[0058] The measurement method described in this embodiment is simple, effective, and easy to operate, unaffected by the diameter of the deep well. Using a single string and a theodolite, it enables timely tracking and detection of the initial segment displacement during deep well construction, accurately determining crucial parameters such as the verticality of the entire deep well. The method is simple to operate, provides accurate data, and offers high measurement precision. The theodolite scanning string method is unaffected by the deep well excavation conditions, and is particularly suitable for underwater tracking measurements.

[0059] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for detecting the displacement of tunnel segments during deep well construction in water, comprising tunnel segments (401) used to form the initial well wall of a deep well (4), and further comprising a device for measuring the drilling depth, characterized in that, A first hanging point (S3) with a fixed position is set above the deep well (4), and a second hanging point (S4) that descends synchronously with the inner side of the segment (401) is set. The first hanging point (S3) is fixedly set above the wellhead; One end of the hanging line (1) is fixed to the second hanging point (S4), and the other end passes around the first hanging point (S3) and is connected to the line-laying device; during installation, the perpendicularity of the hanging line (1) between the first hanging point (S3) and the second hanging point (S4) does not exceed 0.1 / 1000 mm; It also includes a scanning device for measuring two detection points of the above-ground portion of the hanging wire (1) exposed in the deep well (4) to obtain the horizontal distance and vertical height between the two detection points; The vertical distance between the first hanging point (S3) and the second hanging point (S4) is measured by the tunneling depth measuring device; Using the principle of proportionality, the horizontal offset distance of the second hanging point (S4) relative to the first hanging point (S3) is calculated, thereby obtaining the offset of the segment (401).

2. The device for detecting the displacement of segments during deep well construction in water as described in claim 1, characterized in that, The first hanging point (S3) is formed by the hanging pulley (101); the line-laying device adopts a steering pulley (102), which is used as the steering fulcrum of the hanging line (1), and the other end of the hanging line (1) passes around the steering pulley (102) and is connected to a plumb bob (2).

3. The device for detecting the displacement of segments during deep well construction in water as described in claim 2, characterized in that, The second hanging point (S4) is located at one end of the hanging post (5), which is horizontally set, and the other end is connected to the inner wall of the pipe segment (401).

4. The device for detecting the displacement of segments during deep well underwater construction operations according to claim 3, characterized in that, The length of the hanging post (5) is 0.5-5 meters.

5. The device for detecting the displacement of segments during deep well construction in water as described in claim 2, characterized in that, The second hanging point (S4) is located on the support of the tunneling machine body at the bottom of the deep well (4), and the support of the tunneling machine body is connected to the segment (401).

6. The device for detecting the displacement of segments during deep well construction in water as described in claim 1, characterized in that, The scanning device is a theodolite (3).

7. A method for detecting the displacement of tunnel lining segments during deep well construction in water, characterized in that, Includes the following steps: Install the hanging wire: A first hanging point (S3) and a wire-laying device are set above the deep well (4), and a second hanging point (S4) is set inside the segment (401) to descend synchronously with it; the first hanging point (S3) is fixedly set above the wellhead; Connect one end of the hanging line (1) to the second hanging point (S4), and connect the other end to the line-releasing device after passing around the first hanging point (S3) to tighten the hanging line (1); Adjust the position of the first hanging point (S3) so that the perpendicularity of the hanging line (1) between the first hanging point (S3) and the second hanging point (S4) does not exceed 0.1 / 1000 mm, and then fix the position of the first hanging point (S3); Displacement measurement: During the tunneling process, the tunnel segment (401) moves downward. Using the vertical line passing through the first hanging line point (S3) as the measurement benchmark, the first detection point (S1) and the second detection point (S2) of the above-ground part of the hanging line (1) exposed in the deep well (4) are taken. The horizontal lateral distance from the two detection points to the measurement benchmark is measured using a theodolite (3). a , b Scan the vertical height A between two detection points and calculate the horizontal distance between the two detection points. Calculate the horizontal and lateral displacement of segment (401). X = xB / A ,in, B The vertical distance between the first hanging point (S3) and the second hanging point (S4) is measured by the tunneling depth measuring device; Rotate the position of the theodolite (3) 90° around the first hanging point (S3), repeat the displacement measurement steps, and measure the horizontal and longitudinal displacement of the segment (401). Y = yB / A ,in, y This represents the horizontal longitudinal distance between the two detection points.

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