A layered marker base for land subsidence monitoring

Abstract

The utility model provides a kind of layered mark mark bottom for ground subsidence monitoring, including marker post and the protection pipe of being sleeved in the outside of marker post, the top end part of protection pipe is provided with upper seal component, and bottom end is provided with lower seal component, marker post passes through upper seal component and lower seal component and slides, the outside of protection pipe is also provided with centralizer. Upper seal component and lower seal component are provided with oil storage between, the bottom end of marker post is provided with plug-in peg structure, plug-in peg structure is movably connected with sliding extrusion structure. The utility model provides a kind of layered mark mark bottom for ground subsidence monitoring, can improve layered mark mark bottom and plug-in peg design, increase layered mark mark bottom stability, through weight reduction design and increase plug-in peg positioning area, ensure the accuracy and stability of test data.

Description

Technical Field

[0001] This utility model belongs to the field of ground settlement monitoring technology, specifically relating to a layered marker base for ground settlement monitoring. Background Technology

[0002] Land subsidence is a major geological hazard in my country's plains areas and has become one of the significant obstacles to the sustainable development of the country's society and economy. In plains areas, land subsidence leads to ground cracking, building collapse, poor drainage, and water quality deterioration. In coastal areas, land subsidence expands the range of storm surge hazards, causes the coastline to encroach on inland harbors, and has a severe negative impact on already low-lying marshy areas, significantly increasing the area of ​​low-lying wetlands and turning arable land into marshland. Overexploitation of groundwater, oil, natural gas, geothermal resources, and the slow deformation of foundation soil caused by urban construction and major engineering projects are all causes of land subsidence.

[0003] Layered markers are points embedded in different soil layers within the overburden. Within the ground settlement area, these markers are placed on the top and bottom slabs of different soil layers, extending directly to the ground surface. After stability protection treatment, and by connecting with other layered markers and bedrock markers, the compression and expansion of different soil layers are measured, thereby calculating the deformation of different soil layers and the total ground settlement. Layered markers serve as the basis for studying the changes in settlement of soil layers and water-bearing sand layers at different depths. The construction of layered markers enables effective monitoring of ground settlement, further contributing to the establishment of a comprehensive geological disaster early warning system, achieving disaster reduction and mitigation, and ensuring the rapid and stable development of the national economy.

[0004] However, due to the relatively large weight of the base of the layered marker, the existing stakes are generally pressed directly into the soil under the action of gravity. However, in actual use, it has been found that the stability of the marker is not good. Even with the limiting effect of the straightener and the protective tube or the sliding sleeve, the layered marker is prone to shaking, which affects the accuracy and stability of the test data. Utility Model Content

[0005] The purpose of this utility model is to provide a layered marker base for ground settlement monitoring, which solves the technical problem of how to improve the design of the layered marker base and the insertion rod, and increase the stability of the layered marker base. By reducing weight and increasing the positioning area of ​​the insertion rod, the accuracy and stability of the test data are guaranteed.

[0006] A layered marker base for ground settlement monitoring includes a marker pole and a protective tube sleeved on the outside of the marker pole. The top end of the protective tube is provided with an upper sealing component and the bottom end is provided with a lower sealing component. The marker pole slides up and down through the upper sealing component and the lower sealing component. A straightener is also provided on the outside of the protective tube.

[0007] An oil storage tank is provided between the upper sealing assembly and the lower sealing assembly, and a pin insertion structure is provided at the bottom end of the indicator rod, which is movably connected to the sliding extrusion structure.

[0008] The insertion structure includes a fixing plate and multiple pressure columns fixed in a ring array at the edge of the fixing plate. The pressure columns are vertically fixed to the fixing plate, and the fixing plate is coaxially fixed to the bottom end of the marker.

[0009] The sliding extrusion structure includes a movable plug with a rotary structure, a movable column coaxially fixed to the top of the movable plug, and a sliding column coaxially fixed to the movable column at its bottom end. The bottom end of the base is provided with a sliding hole one, and the fixed plate is provided with a sliding hole two. The sliding column moves through the sliding hole two and is slidably connected in the sliding hole one with an interference fit. The movable plug is frustum-shaped with the large end facing down and the small end facing up.

[0010] The upper sealing assembly includes a sealing tube, an upper sealing block fixed to the outer side of the upper end of the sealing tube, and a lower sealing block fixed to the outer side of the lower end of the sealing tube. The outer side of the upper sealing block is fixed to the inner side of the protective tube. The marker rod slides up and down through the lower sealing block and the sealing tube.

[0011] The lower sealing assembly includes a piston, a plurality of annular grooves disposed on the outside of the piston, and a sealing ring engaged in the annular grooves, the sealing ring being slidably disposed on the inside of the protective tube.

[0012] The oil storage tank is located above the sliding plate, the sliding plate is coaxially fixed on the marker rod, the oil storage tank is connected to the oil inlet pipe, and the oil inlet pipe is vertically installed through the upper sealing block.

[0013] A positioning plate is coaxially provided at the top end of the protective tube. An external thread is provided on the outer side of the top end of the protective tube, and an internal thread is provided on the inner side of the positioning plate. The internal thread is connected to the external thread.

[0014] Both the upper sealing block and the lower sealing block are made of rubber.

[0015] For any technical details not described in detail in this solution, please refer to the conventional understanding and judgment of those skilled in the art. Implementing this solution is sufficient, as long as the technical problem is solved. No further details will be provided here.

[0016] This utility model achieves the following significant effects:

[0017] (1) This scheme is equipped with a stake structure and a sliding extrusion structure. When the bottom of the layered marker is pressed down, the sliding extrusion structure moves toward the stake structure and uses the frustum-shaped movable plug to extrude multiple pressure columns outward. The pressure columns open and bend in an umbrella shape, increasing the contact area with the soil layer and increasing stability.

[0018] (2) A lower sealing component is provided. The piston slides up and down automatically to regulate the air pressure inside the protective cylinder. This avoids the need to set up an air pressure regulation structure in the prior art, thus reducing weight. The weight reduction also avoids the problem of the device shaking due to its large inertia.

[0019] (3) A positioning plate is provided, which is threadedly connected to the protective cylinder. After the protective cylinder is stabilized, the protective cylinder can be further positioned. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the layered label base in this utility model.

[0021] Figure 2 This is the front view of the layered label base in this utility model.

[0022] Figure 3 This is a schematic diagram of the upper sealing component in this utility model.

[0023] Figure 4 This is a schematic diagram of the connection structure between the lower sealing component and the insert rod in this utility model.

[0024] Figure 5 This is a schematic diagram of the connection structure of the movable plug in this utility model.

[0025] The attached diagram is labeled as follows: 1. Protective pipe; 2. Centralizer; 3. Positioning plate; 4. Upper sealing block; 5. Sealing pipe; 51. Lower sealing block; 6. Marker; 61. Oil chamber; 62. Sliding plate; 63. Piston; 64. Sealing ring; 7. Oil inlet pipe; 8. Fixed plate; 9. Pressure column; 10. Movable plug; 101. Moving column; 102. Sliding column. Detailed Implementation

[0026] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0027] See Figures 1-5 A layered marker base for ground settlement monitoring includes a marker rod 6 and a protective tube 1 sleeved on the outside of the marker rod 6. The top end of the protective tube 1 is provided with an upper sealing component and the bottom end is provided with a lower sealing component. The marker rod 6 slides up and down through the upper sealing component and the lower sealing component. A straightener 2 is also provided on the outside of the protective tube 1.

[0028] An oil storage tank is provided between the upper sealing assembly and the lower sealing assembly, and a rod insertion structure is provided at the bottom of the rod 6. The rod insertion structure is movably connected to the sliding extrusion structure.

[0029] The insertion structure includes a fixing plate 8 and multiple pressure columns 9 arranged in a ring array and fixed at the edge of the fixing plate 8. The pressure columns 9 are vertically fixed on the fixing plate 8, and the fixing plate 8 is coaxially fixedly connected to the bottom end of the marker 6.

[0030] The bottom of the pressure column 9 is pointed, which makes it easy to press it down into the soil layer.

[0031] The sliding extrusion structure includes a movable plug 10 with a rotary structure, a movable column 101 coaxially fixed to the top of the movable plug 10, and a sliding column 102 coaxially fixed to the movable column 101 at its bottom end. The bottom end of the standard is provided with a sliding hole one, and the fixed plate 8 is provided with a sliding hole two. The sliding column 102 moves through the sliding hole two and is slidably connected in the sliding hole one with an interference fit. The movable plug 10 is frustum-shaped with the large end facing down and the small end facing up.

[0032] During operation, the sliding extrusion structure first contacts the soil layer. Under the enormous gravity of the entire device, the movable plug 10 moves upward, the moving column 101 is coaxially embedded in the center of the fixed plate 8, and the sliding column 102 slides upward, spreading out the multiple pressure columns 9.

[0033] The upper sealing assembly includes a sealing tube 5, an upper sealing block 4 fixed to the outer side of the upper end of the sealing tube 5, and a lower sealing block 51 fixed to the outer side of the lower end of the sealing tube 5. The outer side of the upper sealing block 4 is fixed to the inner side of the protective tube 1. The marker 6 slides up and down through the lower sealing block 51 and the sealing tube 5.

[0034] The marker 6 is slidably connected to the upper sealing block 4, the lower sealing block 51, and the sealing tube 5.

[0035] The lower sealing assembly includes a piston 63, multiple annular grooves disposed on the outside of the piston 63, and a sealing ring 64 engaged in the annular grooves. The sealing ring 64 is slidably disposed on the inside of the protective tube 1. The indicator rod 6 slides coaxially through the piston 63. When the indicator rod 6 moves up and down, it inevitably causes a change in the air pressure in the oil reservoir. At this time, the piston 63 can automatically adjust according to the pressure difference between the inside and outside, without the need for additional equipment, thus achieving weight reduction.

[0036] The sealing ring 64 slides up and down inside the protective cylinder, which is convenient, quick, and highly adaptable.

[0037] The area between the upper sealing assembly and the lower sealing assembly, and close to the lower sealing assembly, is an oil chamber 61 for lubrication; the oil reservoir is located above the sliding plate 62, which is coaxially fixed on the guide rod 6. The oil reservoir is connected to the oil inlet pipe 7, which is set vertically through the upper sealing block 4.

[0038] It should be noted that the oil storage tank is a spatial area, and the oil cavity is located at the bottom end of the oil storage tank, close to the piston 63. Lubrication is achieved during the up-and-down sliding of the rod 6.

[0039] A positioning plate 3 is coaxially provided at the top end of the protective tube 1. An external thread is provided on the outer side of the top end of the protective tube 1, and an internal thread is provided on the inner side of the positioning plate 3. The internal thread is connected to the external thread.

[0040] Both the upper sealing block 4 and the lower sealing block 51 are made of rubber.

[0041] The specific working process of this utility model is as follows:

[0042] Before using the ground settlement monitoring marker, it is necessary to check whether there are any problems that may affect its use. First, during the survey, it is necessary to carry out a drilling-like operation on the ground to drill out a space that can accommodate the marker protection pipe 1. Then, the entire protection pipe 1 is placed vertically into the drilled space, and the device is inside the pipe. The bottom of the marker 6 has a pin insertion structure.

[0043] When the bottom of the layered marker is pressed downwards, the sliding extrusion structure moves toward the insertion structure. Because the device itself is relatively heavy, the insertion structure will be directly pressed into the soil. When the pressure column 9 is inserted, the frustum-shaped movable plug 10 is used to push the multiple pressure columns 9 outwards. At the same time, the movable column 101 is locked between the multiple pressure columns 9, and the sliding column 102 slides in the sliding hole. The pressure column 9 opens and bends in an umbrella shape, increasing the contact area with the soil layer, increasing stability, and achieving support and positioning. The pressure column 9 branches from bottom to top.

[0044] Equipped with a lower sealing component, the air pressure inside the protective cylinder changes when the marker 6 moves up and down. Previously, a pressure regulation structure was required, but this solution eliminates this need. Pressure regulation is achieved through the automatic up-and-down sliding of the movable plug 10. In other words, the automatic up-and-down sliding of the piston 63 regulates the internal air pressure of the protective cylinder, avoiding the need for a pressure regulation structure in existing technologies and achieving weight reduction.

[0045] A positioning plate 3 is provided, which is threadedly connected to the protective cylinder. Once the protective cylinder is stable, it can be further positioned.

[0046] Other construction operations involving the layered tack base, such as drilling techniques, oil injection, and sealing, all employ existing technologies and will not be detailed here.

[0047] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A layered marker base for ground settlement monitoring, comprising a marker pole (6) and a protective tube (1) sleeved on the outside of the marker pole (6), characterized in that, The top end of the protective tube (1) is provided with an upper sealing component and the bottom end is provided with a lower sealing component. The marker (6) slides up and down through the upper sealing component and the lower sealing component. A straightener (2) is also provided on the outside of the protective tube (1). An oil storage tank is provided between the upper sealing assembly and the lower sealing assembly, and a pin insertion structure is provided at the bottom end of the marker (6), which is movably connected to the sliding extrusion structure; The insertion structure includes a fixing plate (8) and a plurality of pressure columns (9) fixed in a ring array at the edge of the fixing plate (8). The pressure columns (9) are vertically fixed on the fixing plate (8), and the fixing plate (8) is coaxially fixed to the bottom end of the marker (6). The sliding extrusion structure includes a movable plug (10) with a rotary structure, a movable column (101) coaxially fixed to the top of the movable plug (10), and a sliding column (102) coaxially fixed to the movable column (101) at its bottom. The bottom of the base is provided with a sliding hole one, and the fixed plate (8) is provided with a sliding hole two. The sliding column (102) moves through the sliding hole two and is slidably connected in the sliding hole one with an interference fit. The movable plug (10) is frustum-shaped with the large end facing down and the small end facing up.

2. The layered marker base for ground settlement monitoring according to claim 1, characterized in that, The upper sealing assembly includes a sealing tube (5), an upper sealing block (4) fixed to the outer side of the upper end of the sealing tube (5), and a lower sealing block (51) fixed to the outer side of the lower end of the sealing tube (5). The outer side of the upper sealing block (4) is fixed to the inner side of the protective tube (1). The marker (6) slides up and down through the lower sealing block (51) and the sealing tube (5).

3. The layered marker base for ground settlement monitoring according to claim 1, characterized in that, The lower sealing assembly includes a piston (63), a plurality of annular grooves disposed on the outside of the piston (63), and a sealing ring (64) fitted in the annular grooves. The sealing ring (64) is slidably disposed on the inside of the protective tube (1).

4. The layered marker base for ground settlement monitoring according to claim 1, characterized in that, The oil storage tank is located above the sliding plate (62), the sliding plate (62) is coaxially fixed on the marker (6), the oil storage tank is connected to the oil inlet pipe (7), and the oil inlet pipe (7) is set vertically through the upper sealing block (4).

5. The layered marker base for ground settlement monitoring according to claim 1, characterized in that, The top end of the protective tube (1) is coaxially provided with a positioning plate (3), the outer side of the top end of the protective tube (1) is provided with an external thread, the inner side of the positioning plate (3) is provided with an internal thread, and the internal thread is connected to the external thread.

6. The layered marker base for ground settlement monitoring according to claim 2, characterized in that, Both the upper sealing block (4) and the lower sealing block (51) are made of rubber.

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