Non-filling karst cave edge detection device

Abstract

The utility model discloses a non-filling karst cave edge detection device which comprises a supporting piece (2) and a detection piece (3) arranged on the supporting piece (2), a sleeve (1) is arranged outside the supporting piece (2), and the sleeve (1) is arranged in a hole in the ground; the method comprises the following steps: firstly, installing a sleeve (1), supporting a soil wall by using the sleeve (1) to protect equipment in the sleeve (1), inserting a support piece (2) and a detection piece (3) into the sleeve (1) after the sleeve (1) is installed, pushing the detection piece (3) by the support piece (2) to detect data in a karst cave, recording the data, and drawing a three-dimensional form of the karst cave by using the recorded data. The extending detection piece (3) is used for measuring the distances between the boundaries of the karst caves with different depths and different angles and the edge detection holes, the accurate three-dimensional size of the karst caves can be obtained, the arrangement number of the edge detection holes is reduced, and the edge detection work efficiency is improved; according to the more accurate three-dimensional size of the karst cave, the accurate processing work amount is obtained, and the processing effect is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a non-filled cave edge detection device. Background Art

[0002] In recent years, tunnel construction in my country has been booming and has gradually developed towards construction under complex geological conditions. A number of tunnels are being built in areas with developed caves, facing the difficulties of few cave detection methods, poor treatment effects, and great treatment difficulty. Especially when dealing with unfilled caves (voids), traditional edge detection methods are not feasible. It is necessary to repeatedly construct edge detection holes around the geophysical contour of the cave, and then determine the approximate range of the cave based on the edge detection situation. It is impossible to accurately give the boundary of the cave, and the amount of material filling and grouting is seriously exceeded and the filling effect is poor. At present, there is no simple device for edge detection of unfilled caves that can accurately give the range of the cave while reducing the number of edge detection holes.

[0003] The patent number is 202211115064.7, and the disclosure date is November 29, 2022. A method for arranging karst cave drilling holes in a shield tunnel section is disclosed, which includes the following steps: S1. Drilling a schematic hole on the revealed karst cave and measuring the height H of the karst cave through the schematic hole; S2. If H is less than 1m, drilling a grouting hole at the edge of the schematic hole; if 1m<H≤3m, drilling two grouting holes in a triangle outside the schematic hole; if H>3m, drilling multiple grouting holes around the schematic hole. Slurry hole; S3, drill a side hole at an interval of 2m around the grouting hole. If the side hole is located in the cave, the side hole is a grouting hole, and continue to drill side holes around the side hole until the boundary of the cave is determined; S4, drill at least one filling hole on the cave according to the size of the cave. If there are multiple filling holes, the interval between two adjacent filling holes is 5m to 7m, and sand is filled into the cave through the filling holes; the technical solution of the present invention reduces the settlement difference after construction, and reduces the occurrence of excessive surface settlement or collapse accidents.

[0004] The traditional method of detecting the edge of unfilled caves has two defects. The first is that it is necessary to continuously expand outward and drill detection holes based on whether the drilling hole reveals the cave. The number of detection holes is large, the detection efficiency is low, and resources are seriously wasted. The second is that when the detection ends, the adjacent drill holes on one side reveal the cave and the other side does not reveal the cave. The line connecting the middle points is the envelope line of the cave plane position. The detection error is large, and the three-dimensional boundary of the cave cannot be accurately determined. Utility Model Content

[0005] The utility model aims to provide a non-filled cave edge detection device with a simple structure and relatively accurate edge detection results.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a non-filled cave edge detection device, including a support member and a detection member arranged on the support member, a sleeve is provided outside the support member, and the sleeve is arranged in a hole on the ground.

[0007] The support member includes an upper fixed rod arranged in a sleeve and a lower fixed rod arranged at the end of the upper fixed rod. The detection member includes a push rod arranged on the inner side of the upper fixed rod, a detection rod is provided in the lower fixed rod, and a transmission rod is provided between the push rod and the detection rod.

[0008] A sliding groove is provided in the upper fixing rod, and the push rod is slidably connected in the sliding groove.

[0009] An insertion shaft is provided between the upper fixing rod and the lower fixing rod.

[0010] A rotating shaft is provided at the connection between the transmission rod and the push rod, and a connecting shaft is provided at the connection between the transmission rod and the detection rod.

[0011] A movable groove matched with the connecting shaft is provided in the lower fixed rod, and the detection rod is arranged in the movable groove.

[0012] A limiting block is provided on the lower fixing rod.

[0013] A bottom plate is provided at the bottom end of the upper fixing rod.

[0014] A limiting plate is provided on the upper fixing rod, and the limiting plate is located below the lower fixing rod.

[0015] The technical effect of the utility model is: by extending the detection rod to measure the distance from the boundary of the cave at different depths and angles to the edge detection hole, the accurate three-dimensional size of the cave can be obtained, the number of edge detection holes can be reduced, and the efficiency of edge detection can be improved; according to the clear three-dimensional size of the unfilled cave, the accurate treatment project volume can be obtained, thereby improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This manual includes the following drawings, which show the following contents:

[0017] Figure 1 This is a structural diagram of a non-filled cave edge detection device of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of a casing for an unfilled cave edge detection device;

[0019] Figure 3 for Figure 1 An enlarged schematic diagram of point A of an unfilled cave edge detection device.

[0020] The markings in the figure are: 1. Sleeve; 2. Support member; 21. Upper fixed rod; 22. Lower fixed rod; 23. Insert shaft; 3. Detection member; 31. Push rod; 32. Transmission rod; 33. Detection rod; 4. Slide groove; 5. Rotating shaft; 6. Connecting shaft; 7. Moving groove; 8. Limit block; 9. Base plate; 10. Limit plate. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the present invention and to facilitate its implementation.

[0022] See also Figure 1-3 A device for detecting the edge of an unfilled cave includes a support member 2 and a detection member 3 arranged on the support member 2. A casing 1 is provided on the outside of the support member 2, and the casing 1 is arranged in a hole on the ground; the casing 1 is first installed, and the casing 1 is used to support the soil wall to protect the equipment in the casing 1. After the casing 1 is installed, the support member 2 and the detection member 3 are inserted into the casing 1, and the detection member 3 is pushed by the support member 2 to detect the data in the cave, and the data is recorded, and the recorded data is used to draw the three-dimensional shape of the cave.

[0023] The support member 2 includes an upper fixed rod 21 arranged in the sleeve 1 and a lower fixed rod 22 arranged at the end of the upper fixed rod 21. The detection member 3 includes a push rod 31 arranged on the inner side of the upper fixed rod 21, a detection rod 33 is provided in the lower fixed rod 22, a transmission rod 32 is provided between the push rod 31 and the detection rod 33, and a scale line is provided on the inner side of the upper fixed rod 21.

[0024] During detection, the lower fixing rod 22 and the upper fixing rod 21 are inserted into the casing 1. At this time, the lower fixing rod 22 and the upper fixing rod 21 are in a closed state. The upper fixing rod 21 is lowered to a certain depth, and the depth of lowering is recorded. Then the push rod 31 is pushed. Under the action of the push rod 31, the push rod 31 pushes the transmission rod 32 and the detection rod 33 to move. The lower fixing rod 22 is also unfolded at the same time, forming a right angle with the upper fixing rod 21. As the push rod 31 is pushed, the detection rod 33 extends outward along the lower fixing rod 22. When the detection rod 33 contacts the boundary of the cave and cannot go any deeper, the width of the cave is calculated according to the scale line reading. After recording the data, the push rod 31 is pulled upward. , then rotate the upper fixed rod 21 to drive the lower fixed rod 22 and the detection rod 33 to rotate, and repeatedly push the push rod 31 after the rotation to extend the detection rod 33 outward, repeat the operation to record the data, and record the angle of each rotation and the depth of the push rod 31 descending. After rotating the upper fixed rod 21 for one circle, move the upper fixed rod 21 up and down, and repeat the above steps until the data position in the cave is completely detected, and the recorded data is used to draw a three-dimensional image of the cave. The device has a simple structure and is easy to install and disassemble. It can effectively detect the boundary of the cave, reduce the number of edge detection holes, improve the edge detection efficiency, and significantly shorten the construction period. It has extremely high promotion and use value.

[0025] A slide groove 4 is provided in the upper fixed rod 21, and a protective plate is provided on the slide groove 4. The push rod 31 is restricted in the slide groove 4, which neither affects the sliding of the push rod 31 nor prevents the push rod 31 from detaching from the slide groove 4. This facilitates the movement of the push rod 31 while connecting the push rod 31 and the upper fixed rod 21 together.

[0026] An insertion shaft 23 is provided between the upper fixing rod 21 and the lower fixing rod 22, so that the lower fixing rod 22 and the upper fixing rod 21 can rotate relative to each other, which is convenient for storage.

[0027] A rotating shaft 5 is provided at the connection between the transmission rod 32 and the push rod 31, and a connecting shaft 6 is provided at the connection between the transmission rod 32 and the detection rod 33; by pushing the push rod 31 up and down, the transmission rod 32 is used to drive the detection rod 33 to extend and retract to measure the width inside the cave.

[0028] A movable groove 7 that cooperates with the connecting shaft 6 is provided in the lower fixed rod 22, and the detection rod 33 is arranged in the movable groove 7; the movable groove 7 is used to limit the movement of the connecting shaft 6 to prevent the connecting shaft 6 from detaching from the movable groove 7, and can also support the detection rod 33 so that the detection rod 33 can always remain horizontal.

[0029] when the upper fixed rod 21 and the lower fixed rod 22 are close to each other, due to the presence of the limit block 8, a certain angle can exist between the upper fixed rod 21 and the lower fixed rod 22, so that when the lower fixed rod 22 is unfolded, the lower fixed rod 22 will not be stuck.

[0030] A bottom plate 9 is provided at the bottom end of the upper fixing rod 21; when the upper fixing rod 21 descends to the bottom end of the cave, the bottom plate 9 is used to support the upper fixing rod 21 to prevent the upper fixing rod 21 from being inserted into the ground and affecting the measurement results.

[0031] A limit plate 10 is provided on the upper fixed rod 21, and the limit plate 10 is located below the lower fixed rod 22; the limit plate 10 is used to support the lower fixed rod 22. After the lower fixed rod 22 is unfolded, the limit plate 10 is used to support the lower fixed rod 22 to avoid the lower fixed rod 22 from breaking or the like.

[0032] Edge detection method: First, construct an edge detection hole and lower the wall protection casing 1 into the hole to prevent the hole wall from collapsing. Then lower the edge detection device into the edge detection hole to a certain depth and record the lowering depth of the upper fixing rod 21 h O At the same time, the lower fixed rod 22 rotates and opens under the action of gravity, and the lower fixed rod 22 rotates and falls on the limit plate 10. The limit plate 10 supports the lower fixed rod 22. At this time, the lower fixed rod 22 forms a 90-degree right angle with the upper fixed rod 21;

[0033] When the push rod 31 is pushed, it moves downward along the slide groove 4 of the upper fixed rod 21. The movement of the push rod 31 drives the movement of the transmission rod 32, thereby pushing the detection rod 33 to slide outward along the moving groove 7 in the lower fixed rod 22. When it reaches the boundary of the cave, the distance L1 from the boundary of the cave to the center line of the fixed rod is obtained according to the scale line reading in the upper fixed rod 21. After the measurement is completed, the push rod 31 is pulled upward. The push rod 31 pulls the detection rod 33 inward through the transmission rod 32. At the same time, the lower fixed rod 22 rotates upward under the action of the detection rod 33 and the connecting shaft 6. The lower fixed rod 22 and the upper fixed rod 21 move closer to each other to avoid touching the edge of the cave during subsequent rotation and getting stuck.

[0034] After closing the upper fixing rod 21 and the lower fixing rod 22, the edge detection device is rotated at a certain angle α, and the push rod 31 is pushed to repeat the above operation to measure the distance L2 between the cave and the edge detection hole at that angle. The angles β, γ, ..., at that depth are measured respectively. The distance Li between the cave boundary and the edge detection hole is measured.

[0035] After one week of measurement, the edge detection device is raised or lowered to a certain height h, and the above operation is repeated to obtain the width data of the cave at that depth. Then, it is raised or lowered to a certain height h again, and the above steps are repeated until the edge detection in all the edge detection holes is completed. Finally, based on the detection spacing of multiple edge detection holes, the three-dimensional morphology of the unfilled cave is drawn.

[0036] The technical effect of the present utility model is: by extending the detection rod 33 to measure the distance from the boundary of the cave at different depths and angles to the edge detection hole, the accurate three-dimensional size of the cave can be obtained, the number of edge detection holes can be reduced, and the efficiency of edge detection can be improved; according to the clear three-dimensional size of the unfilled cave, the accurate treatment project volume can be obtained, thereby improving the treatment effect.

[0037] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A device for detecting the edge of an unfilled cave, characterized by: It comprises a support member (2) and a detection member (3) arranged on the support member (2); a sleeve (1) is provided outside the support member (2); and the sleeve (1) is arranged in a hole on the ground.

2. The device for detecting the edge of an unfilled cave according to claim 1, characterized in that: The support member (2) comprises an upper fixing rod (21) arranged in the sleeve (1) and a lower fixing rod (22) arranged at the end of the upper fixing rod (21); the detection member (3) comprises a push rod (31) arranged inside the upper fixing rod (21); a detection rod (33) is arranged in the lower fixing rod (22); and a transmission rod (32) is provided between the push rod (31) and the detection rod (33).

3. The device for detecting the edge of an unfilled cave according to claim 2, characterized in that: A sliding groove (4) is provided in the upper fixing rod (21), and the push rod (31) is slidably connected in the sliding groove (4).

4. The device for detecting the edge of an unfilled cave according to claim 2 or 3, characterized in that: An insertion shaft (23) is provided between the upper fixing rod (21) and the lower fixing rod (22).

5. The device for detecting the edge of an unfilled cave according to claim 2, characterized in that: A rotating shaft (5) is provided at the connection between the transmission rod (32) and the push rod (31), and a connecting shaft (6) is provided at the connection between the transmission rod (32) and the detection rod (33).

6. The device for detecting the edge of an unfilled cave according to claim 5, characterized in that: A movable groove (7) matching with the connecting shaft (6) is provided in the lower fixed rod (22), and the detection rod (33) is arranged in the movable groove (7).

7. The device for detecting the edge of an unfilled cave according to claim 6, characterized in that: A limiting block (8) is provided on the lower fixing rod (22).

8. The device for detecting the edge of an unfilled cave according to claim 2, characterized in that: A bottom plate (9) is provided at the bottom end of the upper fixing rod (21).

9. The device for detecting the edge of an unfilled cave according to claim 2 or 3, characterized in that: A limiting plate (10) is provided on the upper fixing rod (21), and the limiting plate (10) is located below the lower fixing rod (22).

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