Ground subsidence net monitoring equipment and monitoring method

Abstract

The invention discloses ground subsidence net monitoring equipment and a monitoring method, and relates to the technical field of subsidence monitoring. The ground subsidence net monitoring equipment comprises a liquid storage bin, a fixed base plate is arranged at the bottom of the liquid storage bin, a foundation pillar is installed at the bottom of the fixed base plate, a horizontal monitor is arranged above the liquid storage bin, and L-shaped base claws are symmetrically arranged on the periphery of the fixed base plate; the device further comprises a water level monitoring mechanism and a fastening mechanism. According to the design of the scheme, it can be ensured that the foundation of the whole ground subsidence device has extremely high rigidity, stability and anti-interference capacity, connection looseness between the base plate and the ground surface bearing layer can be effectively prevented, and horizontal deviation, sliding or overturning of the whole device caused by external force or geological factors can be fundamentally eradicated; and a crucial basic guarantee is provided for accurate, stable, long-term and reliable land subsidence operation. And the construction efficiency is greatly improved due to the characteristic of rapid fixation.

Description

Technical Field

[0001] This invention relates to the field of settlement monitoring technology, specifically to a ground settlement network monitoring device and monitoring method. Background Technology

[0002] Ground subsidence refers to a geological phenomenon caused by the compression or displacement of soil or rock layers beneath the Earth's surface due to natural factors or human activities, resulting in a slow and regional decrease in the Earth's surface elevation.

[0003] When existing ground settlement monitoring devices are in use, ground construction work or environmental vibrations near the monitoring area will be transmitted to the device itself, causing local non-settlement vibrations in the device (especially its sensors or support structures). These mechanical vibrations unrelated to settlement will be misread as displacement signals by the sensors, causing instantaneous fluctuations, distortions or increased noise in the monitoring data, which seriously interferes with the identification and quantification of the true and slow settlement trend.

[0004] Furthermore, in special environments with significant temperature changes (such as large diurnal temperature variations or seasonal changes), the surface soil or structural layers will undergo volume changes due to thermal expansion and contraction. These changes in the surface layer will be further transmitted to the base surface (such as foundation piles and foundation slabs) on which the settlement monitoring device relies for stability. The resulting minute movements of the base surface (non-settlement displacement) will directly change the reference position or orientation of the monitoring device. This reference drift will be recorded by the sensor as false settlement or uplift signals, leading to systematic biases in the monitoring results. Over the long term, this bias will mask or distort the true ground settlement rate and magnitude.

[0005] Therefore, a ground settlement network monitoring device and monitoring method are proposed to solve the above problems. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to provide a ground subsidence network monitoring device and monitoring method to solve the problems that have occurred in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a ground subsidence network monitoring device and monitoring method, comprising a liquid storage tank, a fixed base plate provided at the bottom of the liquid storage tank, a base column installed at the bottom of the fixed base plate, a level monitoring instrument provided above the liquid storage tank, and L-shaped base claws symmetrically arranged around the fixed base plate, and further comprising a water level monitoring mechanism and a fastening mechanism;

[0008] The water level monitoring mechanism is installed in the liquid storage tank and is used for monitoring the vertical displacement of the L-shaped base claw.

[0009] The fastening mechanism is installed in the base column and is used to fasten the base column.

[0010] Preferably, the water level monitoring mechanism comprises a support rod fixedly connected to the L-shaped base claw, vertical grooves evenly formed in the fixed base plate, the support rod slidably connected to the vertical grooves at the end away from the L-shaped base claw, an auxiliary rod fixedly installed at the upper end of the support rod, the auxiliary rod slidably installed on the outer surface of the liquid storage bin, a waterproof plug fixedly connected to the end of the auxiliary rod away from the support rod, and the waterproof plug slidably installed on the inner wall of the liquid storage bin with airtightness.

[0011] Preferably, a fixed column is fixedly connected to the middle of the liquid storage bin, the bottom of the fixed column is fixedly connected to the middle of the fixed base plate, the waterproof plug is slidably connected to the outer surface of the fixed column, a waterproof sealing gasket is installed at the connection between the waterproof plug and the fixed column, and the end of the fixed column away from the fixed base plate is fixedly installed on the horizontal monitor.

[0012] Preferably, the fastening mechanism comprises an adjusting nut, a linkage shaft fixedly installed in the middle of the adjusting nut, the outer surface of the upper end of the linkage shaft is threadedly installed in the middle of the fixed base plate, a first spring is arranged in the middle of the base column, one end of the first spring is fixedly installed in the base column, the other end of the first spring is fixedly connected to a first fixed disc, and the bottom of the first fixed disc is circumferentially rotatably installed with a first support plate.

[0013] Preferably, the first support plate is rotatably connected to a first fastening clamping plate at the end away from the first fixed disc, a clamping groove is circumferentially formed in the outer surface of the base column, the first fastening clamping plate is rotatably connected in the clamping groove of the base column, a connecting block is rotatably connected to the end of the linkage shaft away from the adjusting nut, first push plates are symmetrically rotatably connected to the left and right sides of the connecting block, and a rotating disc is rotatably connected to the end of the first push plate away from the linkage shaft.

[0014] Preferably, a support plate is rotatably installed on the outer surface of the rotating disc, the support plate is fixedly installed on the inner wall of the base column, a second push plate is rotatably connected to the outer surface of the rotating disc, a connecting shaft is rotatably connected to the end of the second push plate away from the rotating disc, a second fixed disc is slidably connected to the surface of the connecting shaft, the second fixed disc is fixedly connected to the inner wall of the base column, and a ground cone is fixedly connected to the end of the connecting shaft away from the second push plate.

[0015] Preferably, a second spring is fixedly installed on the inner wall of the base column below the second fixed disc, the end of the second spring away from the second fixed disc is fixedly connected to the ground cone, the ground cone is slidably installed on the inner wall of the bottom of the base column, a second fastening clamping plate is circumferentially rotatably installed on the outer side of the ground cone, a second support plate is rotatably connected to the end of the second fastening clamping plate away from the ground cone, and the second support plate is rotatably installed on the outer surface of the bottom of the base column.

[0016] A ground subsidence network monitoring method, comprising:

[0017] S1, point selection, according to the design drawing, confirm whether the point position meets the requirements in the field, select the good visibility, stable foundation, easy to protect, avoid interference source;

[0018] S2, punching, the ground is punched through the punching equipment, the punching depth needs to be punched to the bedrock layer, the base column is inserted into the hole, and the bottom of the base column is in contact with the bottom of the hole;

[0019] S3, the base column is fixed, the middle adjusting nut of the base column can drive the first spring and the second support plate to extrude the rock foundation layer, and the overall stability of the base column is increased;

[0020] S4, the L-shaped base claw is inserted into the ground monitoring area, and the L-shaped base claw is adjusted horizontally on the fixed base plate, and the fixed base plate is located above the waterproof plug, and liquid is injected, and the liquid level is higher than the liquid level pipe, and the upper end of the liquid level pipe is connected to the liquid level monitor for detection;

[0021] S5, the direction of the L-shaped base claw is accurately adjusted to ensure that the monitoring axis is parallel to the preset monitoring reference direction, the built-in sensor of the liquid level L-shaped base claw is started, real-time monitoring data is uploaded to the cloud monitoring platform through the data transmission module, and continuous automatic monitoring of the ground subsidence is realized.

[0022] Compared with the prior art, the ground subsidence net monitoring device and the monitoring method provided by the application have the following beneficial effects:

[0023] 1, the fastening mechanism design can prevent the measuring device from producing measurement deviation and affecting the measurement quality due to the micro displacement of the ground hole caused by the thermal expansion and contraction of the ground surface.

[0024] 2, the first fastening plate and the second support plate in the fastening mechanism can effectively fix the base column in the hole, and the design of the first fastening plate and the second support plate in the opposite direction can prevent the base column from loosening and sliding due to one-way fixation.

[0025] 3、Water level monitoring mechanism setting can make the first fastening card and the second branch plate tightly adhere to and strongly extrude the hole wall embedded in the bottom of the rock foundation layer or the cavity bottom formed by intentionally expanding the hole, since the first fastening card and the second branch plate are distributed in different directions of the foundation column, they simultaneously resist the force from each horizontal direction, forming mechanical interlocking, the first fastening card and the second branch plate form a strong mechanical interlocking structure with the underlying solid rock, any force trying to make the fixed shaft move horizontally or overturn will be resisted by the great friction between the card and the rock and the direct mechanical resistance, at the same time, the first fastening card and the second branch plate are located at the bottom of the foundation column, with a considerable force arm from the fixed base plate, which can effectively resist the overturning moment acting on the base plate and prevent the whole device from tilting, fundamentally preventing any form of horizontal slip of the base plate on the ground.

[0026] 4、Through the design of the scheme, the foundation of the whole ground subsidence device has extremely high rigidity, stability and anti-interference ability, not only can effectively prevent the connection between the base plate and the ground bearing layer from loosening, but also fundamentally eliminates the horizontal deviation, slip or overturning of the whole device caused by external force or geological factors, providing important foundation guarantee for accurate, stable and long-term reliable ground subsidence operation. The "quick fixing" feature also greatly improves the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0028] Figure 2 is a schematic diagram of the three-dimensional structure of the present application;

[0029] Figure 3 is a schematic diagram of the three-dimensional structure of the present application; Figure 2

[0030] Figure 4 is a schematic diagram of the three-dimensional structure of the present application;

[0031] Figure 5 is a schematic diagram of the three-dimensional structure of the present application; Figure 4 Figure 6 is a schematic diagram of the three-dimensional structure of the present application; Figure 4

[0032] Example 1, please refer to Figures 1 to 6

[0033] in the figure:

[0034] 1, liquid storage bin; 11, fixed base plate; 12, foundation column; 13, horizontal monitor; 14, L-shaped base claw;

[0035] ​​​​2, water level monitoring mechanism; 21, support rod; 22, vertical slot; 23, auxiliary rod; 24, waterproof plug; 25, liquid level tube; 26, fixed column;

[0036] 3, fastening mechanism; 31, adjusting nut; 32, linkage shaft; 33, first spring; 34, first fixed disc; 35, first support plate; 36, first fastening clamping plate; 37, first push plate; 38, turntable; 39, support plate;

[0037] 41, second push plate; 42, second fixed disc; 43, second spring; 44, ground cone; 45, second fastening clamping plate; 46, second support plate. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] The present application will be further described in detail below according to the drawings and embodiments.

[0040] Embodiment 1, please refer to Figures 1 to 6 as shown:

[0041] To solve the problems mentioned in the technical solutions, the embodiments of the present application provide a ground subsidence net monitoring device, which comprises a liquid storage bin 1, a fixed base plate 11 is arranged at the bottom of the upper liquid storage bin 1, a base column 12 is installed at the bottom of the fixed base plate 11, a horizontal monitor 13 is arranged above the liquid storage bin 1, L-shaped base claws 14 are symmetrically arranged around the fixed base plate 11, and the device further comprises a water level monitoring mechanism 2 and a fastening mechanism 3.

[0042] The water level monitoring mechanism 2 is arranged in the liquid storage bin 1, and the water level monitoring mechanism 2 is used for monitoring the vertical displacement of the L-shaped base claw 14.

[0043] The fastening mechanism 3 is arranged in the base column 12, and the fastening mechanism 3 is used for fastening the base column 12.

[0044] Specifically, as shown in Figure 3 the support rod 21 is fixedly connected to the L-shaped base claw 14, the vertical slots 22 are uniformly formed in the fixed base plate 11, the support rod 21 is slidably connected to the vertical slots 22 away from the L-shaped base claw 14, the auxiliary rod 23 is fixedly installed at the upper end of the support rod 21, the auxiliary rod 23 is slidably installed in the liquid storage bin 1, the waterproof plug 24 is fixedly connected to the end of the auxiliary rod 23 away from the support rod 21, the waterproof plug 24 is slidably installed on the inner wall of the liquid storage bin 1, and the waterproof plug 24 has sealing property with the inner wall of the liquid storage bin 1.

[0045] Wherein, the fixed substrate 11 is injected with liquid near the upper surface of the waterproof plug 24, and the liquid level is higher than the bottom of the liquid level pipe 25, and the bottom end of the liquid level pipe 25 is completely immersed in the liquid, wherein the local subsidence of the ground will drive the L-shaped base claw 14 to move downward, and the downward movement of the L-shaped base claw 14 will drive the waterproof plug 24 to slide downward in the inner wall of the fixed substrate 11, so that the liquid level in the fixed substrate 11 is lowered, and the liquid level can be quickly measured through the connection of the liquid level pipe 25 and the liquid level measuring device, and the subsidence of the ground surface can be quickly monitored in real time through the L-shaped base claw 14, and the monitoring data can be uploaded to the cloud platform in real time, and the user only needs to query the data through the client to monitor the site.

[0046] Further, the fixed column 26 is fixedly connected in the middle of the liquid storage bin 1, the bottom of the fixed column 26 is fixedly connected in the middle of the fixed substrate 11, the waterproof plug 24 is slidingly connected to the outer surface of the fixed column 26, and the waterproof sealing gasket is installed at the connection between the waterproof plug 24 and the fixed column 26. The end of the fixed column 26 away from the fixed substrate 11 is fixedly installed on the horizontal monitor 13.

[0047] Wherein the waterproof plug 24 in the fixed substrate 11 has a certain sealing property with the inner wall of the fixed substrate 11 and the fixed column 26.

[0048] Specifically, as shown in the figure, the linkage shaft 32 is fixedly installed in the middle of the adjusting nut 31, the outer surface of the upper end of the linkage shaft 32 is threadedly installed in the middle of the fixed substrate 11, the first spring 33 is arranged in the middle of the base column 12, one end of the first spring 33 is fixedly installed in the base column 12, the other end of the first spring 33 is fixedly connected with the first fixed disc 34, and the first fixed disc 34 is circumferentially rotatably installed with the first branch plate 35 at the bottom; the first fastening clamping plate 36 is rotatably connected at the end of the first branch plate 35 away from the first fixed disc 34, the clamping groove is circumferentially arranged on the outer surface of the base column 12, the first fastening clamping plate 36 is rotatably connected in the clamping groove of the base column 12, the connecting block is rotatably connected on the end of the linkage shaft 32 away from the adjusting nut 31, and the first push plate 37 is rotatably connected on both sides of the connecting block, and the rotary disc 38 is rotatably connected on the end of the first push plate 37 away from the linkage shaft 32.

[0049] Wherein, the first fastening clamping plate 36 is circumferentially rotatably installed on the base column 12, and the sliding adjustment of the first fixed disc 34 can drive the first fastening clamping plate 36 to be adjusted by the first branch plate 35.

[0050] Further, the second push plate 41 is rotationally connected with a connecting shaft at one end away from the rotating disc 38, and the connecting shaft is slidingly connected with a second fixing disc 42, and the second fixing disc 42 is fixedly connected with the inner wall of the base column 12, and the connecting shaft is fixedly connected with a ground cone 44 at one end away from the second push plate 41; the second spring 43 is fixedly installed below the second fixing disc 42 of the base column 12, and the second spring 43 is fixedly connected with the ground cone 44 at one end away from the second fixing disc 42, and the ground cone 44 is slidingly installed on the inner wall of the bottom of the base column 12, and the second fastening clamping plate 45 is rotationally installed on the upper surface of the ground cone 44 close to the outer side of the second spring 43, and the second branch plate 46 is rotationally connected with the second fastening clamping plate 45 at one end away from the ground cone 44, and the second branch plate 46 is rotationally installed on the outer surface of the bottom of the base column 12.

[0051] Wherein the vertical adjustment of the linkage shaft 32 can drive the first push plate 37 to drive the rotating disc 38 to rotate in the supporting plate 39, and one rotation of the rotating disc 38 can drive the connecting shaft to move by pulling the second push plate 41, and the connecting shaft can drive the ground cone 44 to slide reversely on the inner wall of the base column 12 relative to the linkage shaft 32.

[0052] The scheme can press the ground cone 44 upward by the weight of the base column 12 itself, and simultaneously drive the ground cone 44 to slide in the base column 12, and simultaneously the downward sliding of the linkage shaft 32 can synchronously lock the ground cone 44 on the inner wall of the base column 12, so that the first fastening clamping plate 36 and the second branch plate 46 can fix the inner wall of the rock foundation layer in the opposite direction, prevent the base column 12 from falling off and shaking due to special weather and ground vibration, and prevent the fixed base plate 11 from unstable shaking, reduce the overall measurement accuracy of the L-shaped base claw 14, and simultaneously the threaded locking function of the linkage shaft 32 and the fixed base plate 11 can lock the second branch plate 46 and the first fastening clamping plate 36, prevent them from falling off, and effectively ensure the connection stability.

[0053] Embodiment 2, the specific implementation steps of embodiment 1 are as follows:

[0054] Step one, point selection and confirmation, according to the design drawing, on-site investigation is carried out, and the actual position of the preset monitoring point is checked and confirmed to meet the design requirements.

[0055] Among them, the point selection needs to ensure that the visibility condition is good without obstacles, the foundation is stable and reliable, easy to maintain for a long time, and far away from potential electromagnetic interference sources or strong vibration sources.

[0056] Step two, drilling and monitoring pile installation, using special drilling equipment, vertical drilling operation is carried out at the selected point, until the drilling passes through the covering layer and enters the stable bedrock layer, and at the same time, the base column 12 is vertically inserted into the drilling hole, and the bottom end of the base column 12 is in stable contact with the bottom of the drilling hole, i.e. the bedrock layer.

[0057] The specific method is as follows: When the operator places and fixes the base column 12 to the same depth as the drilling depth, and when the base column 12 is placed at the bottom of the brick hole, the operator then... Figure 4 As shown, the operator uses a tool to rotate the adjusting nut 31. Rotating the adjusting nut 31 causes the linkage shaft 32 to rotate threadedly on the surface of the fixed base plate 11. This threaded connection causes the linkage shaft 32 to move downwards. Rotating the adjusting nut 31 then drives the linkage shaft 32 to slide the first fixed plate 34 downwards against the inner wall of the base column 12. The downward sliding of the first fixed plate 34 causes the first support plate 35 to push the first fastening plate 36 against the rock foundation surface. The first fastening plate 36, circumferentially positioned on the base column 12, allows... The base column 12 can be evenly stressed at the bottom of the rock base. At this time, the base column 12 will insert the ground cone 44 into the bottom of the borehole through its own weight. The ground cone 44 will then slide upward along the inner wall of the base column 12. The upward sliding action of the ground cone 44 will cause the second spring 43 to be compressed, and at the same time, the second support plate 46 will start to squeeze against the rock base. Meanwhile, the second support plate 46 and the first fastening plate 36 are fixed to the rock base in opposite directions, which can prevent the base column 12 from moving in one direction in the rock base. The opposite compression on both sides can make the base column 12 stable even when it collapses at the bottom of the hole.

[0058] Step 3: Monitoring pile anchoring. By rotating the adjusting nut 31 in the middle of the base column 12, the first spring 33 and the second support plate 46 at its bottom are driven to expand outward, generating strong squeezing friction with the bedrock layer of the borehole wall, realizing the rigid anchoring of the monitoring pile in the bedrock, and significantly improving its overall stability.

[0059] Step 4: Level Instrument Installation and Initial Setup. Insert the L-shaped base claw 14 into the ground mounting sleeve at the settlement-sensitive point of the area to be monitored. On the fixed base plate 11 installed at the benchmark or reference point, adjust and monitor the level sensor of the connecting pipe. Inject working fluid into the injection chamber located on the fixed base plate 11 until the liquid level is stable and higher than the starting point of the range of the level tube 25. Connect the signal output terminal of the level sensor to the data acquisition unit or directly to the level monitoring instrument.

[0060] Step 5: Instrument calibration and system integration. Fine-tune the attitude of the level monitor 13 to ensure that its measuring axis is strictly horizontal with the direction of settlement to be monitored or at the angle required by the design. Start and test the data acquisition function of the level monitor 13 and the liquid level tube 25. Transmit the real-time monitoring data of liquid level changes reflecting the elevation difference to the cloud monitoring platform wirelessly or via wired means to realize remote, real-time, and automated monitoring of surface settlement.

[0061] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0062] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, numerous modifications are possible without departing from the spirit and scope of the present application as delineated by the claims and their equivalents.

Claims

1. A ground subsidence network monitoring device comprising a liquid reservoir (1), characterized in that, The bottom of the liquid storage bin (1) is provided with a fixed base plate (11), the bottom of the fixed base plate (11) is provided with a base column (12), the upper portion of the liquid storage bin (1) is provided with a horizontal monitor (13), the periphery of the fixed base plate (11) is symmetrically provided with an L-shaped base claw (14), and the water level monitoring mechanism (2) and the fastening mechanism (3) are further included. The water level monitoring mechanism (2) is arranged in the liquid storage bin (1), and the water level monitoring mechanism (2) is used for monitoring the vertical displacement of the L-shaped base claw (14). The fastening mechanism (3) is arranged in the base column (12), and the fastening mechanism (3) is used for fastening the base column (12).

2. The ground subsidence network monitoring device according to claim 1, characterized in that, The water level monitoring mechanism (2) includes a supporting rod (21), the supporting rod (21) is fixedly connected to the L-shaped base claw (14), vertical grooves (22) are uniformly formed in the fixed base plate (11), one end of the supporting rod (21) away from the L-shaped base claw (14) is slidably connected to the vertical groove (22), an auxiliary rod (23) is fixedly installed at the upper end of the supporting rod (21), the outer surface of the auxiliary rod (23) is slidably installed in the liquid storage bin (1), a waterproof plug (24) is fixedly connected to the end of the auxiliary rod (23) away from the supporting rod (21), and the outer surface of the waterproof plug (24) is slidably installed on the inner wall of the liquid storage bin (1), and the waterproof plug (24) and the inner wall of the liquid storage bin (1) are sealing.

3. A ground settlement network monitoring apparatus according to claim 2, wherein, The middle of the liquid storage bin (1) is fixedly connected with a fixed column (26), the bottom of the fixed column (26) is fixedly connected to the middle of the fixed base plate (11), the middle of the waterproof plug (24) is slidably connected to the outer surface of the fixed column (26), a waterproof sealing gasket is installed at the connection between the waterproof plug (24) and the fixed column (26), and the end of the fixed column (26) away from the fixed base plate (11) is fixedly installed on the horizontal monitor (13).

4. The ground subsidence network monitoring device according to claim 1, characterized in that, The fastening mechanism (3) includes an adjusting nut (31), the middle of the adjusting nut (31) is fixedly installed with a linkage shaft (32), the outer surface of the upper end of the linkage shaft (32) is threadedly installed in the middle of the fixed base plate (11), the middle of the base column (12) is provided with a first spring (33), one end of the first spring (33) is fixedly installed in the base column (12), the other end of the first spring (33) is fixedly connected with a first fixed disc (34), and the bottom of the first fixed disc (34) is circumferentially rotatably installed with a first supporting plate (35).

5. A ground settlement network monitoring apparatus according to claim 4, wherein, The end of the first supporting plate (35) away from the first fixed disc (34) is rotatably connected with a first fastening clamping plate (36), the outer surface of the base column (12) is circumferentially provided with a clamping groove, the first fastening clamping plate (36) is rotatably connected in the clamping groove of the base column (12), the end of the linkage shaft (32) away from the adjusting nut (31) is rotatably connected with a connecting block, and the first push plate (37) is rotatably connected on both sides of the connecting block, the end of the first push plate (37) away from the linkage shaft (32) is rotatably connected with a rotating disc (38).

6. A ground settlement network monitoring apparatus according to claim 5, wherein, The outer surface of the rotating disc (38) is rotatably connected with a second push plate (41), one end of the second push plate (41) away from the rotating disc (38) is rotatably connected with a connecting shaft, and the surface of the connecting shaft is slidably connected with a second fixed disc (42), the second fixed disc (42) is fixedly connected to the inner wall of the base column (12), and one end of the connecting shaft away from the second push plate (41) is fixedly connected with a ground cone (44).

7. A ground settlement network monitoring apparatus according to claim 6, wherein, The second spring (43) is fixedly connected to the ground cone (44) away from the second fixed disc (42), and the ground cone (44) is slidably installed on the inner wall of the bottom of the base column (12), the outer surface of the ground cone (44) is rotatably connected with a second fastening clamping plate (45), one end of the second fastening clamping plate (45) away from the ground cone (44) is rotatably connected with a second supporting plate (46), and the second supporting plate (46) is rotatably installed on the outer surface of the bottom of the base column (12).

8. A method for monitoring ground subsidence network, suitable for a ground subsidence network monitoring device according to any one of claims 1-7, characterized in that, Including: S1, point selection, according to the design drawing, confirm whether the point position meets the requirements, select a good view, stable foundation, easy to protect, avoid interference source; S2, punching, punching equipment is used to punch the ground, the punching depth needs to be punched to the bedrock layer, the base column (12) is inserted into the hole, and the bottom of the base column (12) is in contact with the bottom of the hole; S3, fix the base column (12), rotate the middle adjusting nut (31) of the base column (12) to drive the first spring (33) and the second supporting plate (46) to extrude the rock foundation layer, and increase the overall stability of the base column (12); S4, insert the L-shaped base claw (14) into the ground monitoring area, and adjust the L-shaped base claw (14) horizontally on the fixed base plate (11), and inject liquid above the waterproof plug (24), and the liquid level is higher than the liquid level pipe (25), and the upper end of the liquid level pipe (25) is connected to the liquid level monitor for detection; S5, accurately determine the position of the L-shaped base claw (14), ensure that the monitoring axis is parallel to the preset monitoring reference direction, start the liquid level L-shaped base claw (14) built-in sensor, upload the real-time monitoring data to the cloud monitoring platform through the data transmission module, and realize continuous automatic monitoring of the ground subsidence.

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