A layered primer

Abstract

The utility model provides a kind of layered standard base, including standard base main body, standard head seat, bottom drill and side positioning structure, standard base main body has through center hole, and one end of center hole is standard pole interface.Standard head seat is located in the side of standard base main body away from standard pole interface, and with the other end of center hole detachably connected.Bottom drill is set in the end of standard head seat away from standard base main body, with multiple lower positioning parts that are inserted into the lower end of standard hole and extend outward.Side positioning structure is provided with multiple, each side positioning structure is arranged around on standard base main body, and each side positioning structure has upper positioning part that can be inserted into the side wall of standard hole and extend along the radial direction of center hole.The layered standard base provided by the utility model can effectively avoid deviation caused by uneven extrusion of landfill soil or stratum micro-motion, effectively adapt to groundwater level change and slight vibration, ensure the stability of layered standard in long-term monitoring, and further ensure the continuity and precision of settlement data measurement.

Description

Technical Field

[0001] This utility model belongs to the field of ground subsidence monitoring technology, specifically relating to a layered benchmark. Background Technology

[0002] Layered markers are monitoring markers buried near the interfaces of loose soil layers at different depths to measure relative displacement. They are important facilities for monitoring ground settlement, enabling a systematic understanding of stratum compression deformation, analysis of the layers and causes of ground settlement, and providing a scientific basis for formulating scientific and reasonable measures to control ground settlement. Layered markers mainly consist of a marker base assembly, protective tube, marker rod, and marker head. The marker base assembly is a rigid combination device that tightly binds the layered marker to the monitored soil layer. It is the most important component at the bottom of the layered marker that transmits ground settlement information upwards without loss.

[0003] In existing technologies, most layered benchmarks rely solely on simple bottom support structures for positioning, without any soil storage for weight enhancement. When filling with landfill soil, the device is prone to center shift due to uneven compression of the landfill soil or slight ground movement, such as changes in groundwater level or minor vibrations. This can lead to vertical or horizontal displacement of the device during long-term monitoring, affecting the continuity and accuracy of settlement data. Therefore, we propose a layered benchmark. Utility Model Content

[0004] This utility model provides a layered marker base, which aims to solve the problem that existing multi-layered marker bases rely solely on a simple bottom support structure for positioning, without soil storage for added weight. When filling with landfill soil, the device is prone to center shift due to uneven compression of the landfill soil or slight ground movement, such as changes in groundwater level or minor vibrations. This can lead to vertical or horizontal displacement of the device during long-term monitoring, affecting the continuity and accuracy of settlement data.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a layered marker base, including a marker base body with a through central hole, one end of which is a marker pole interface;

[0006] The marker head seat is located on the side of the marker base body away from the marker rod interface, and is detachably connected to the other end of the center hole;

[0007] The bottom pin is located at the end of the marker head away from the marker body and has multiple outwardly extending lower positioning parts that can be inserted into the bottom of the marker hole;

[0008] The side positioning structure is provided in multiple ways, and each side positioning structure is arranged around the main body of the target base. Each side positioning structure has an upper positioning part that can extend radially along the central hole and insert into the side wall of the target hole.

[0009] Preferably, the header holder includes:

[0010] The top end of the central column is detachably connected to the bottom end of the central hole;

[0011] The outer shell has an open cavity into which the bottom end of the central post extends, and the outer shell is fixedly connected to the bottom end of the central post; the bottom end of the outer shell is connected to the bottom pin.

[0012] Multiple support columns are provided, and each support column is arranged in a ring at intervals along the axis of the central column. One end of each support column is connected to the central column, and the other end is connected to the outer shell.

[0013] Wherein, the open cavity forms a storage space with an open top after the central column and each of the supporting columns are installed;

[0014] Preferably, the outer shell has a conical shape, with a large-diameter end and a small-diameter end, the large-diameter end being located above the small-diameter end;

[0015] Correspondingly, the open cavity is a conical cavity;

[0016] Preferably, the main body of the target base has a cylindrical shape; the diameter of the large-diameter end is larger than the diameter of the main body of the target base;

[0017] Preferably, the central post is threaded to the bottom end of the central hole;

[0018] Preferably, the bottom probe includes:

[0019] Socket;

[0020] Multiple positioning cones are provided, and the positioning cones are arranged in a ring at intervals; one end of each positioning cone is fixedly connected to the drill bit seat, and the other end extends obliquely downward; the positioning cone is the lower positioning part.

[0021] Preferably, the drill bit holder has a conical shape and is coaxially arranged with the central hole;

[0022] Preferably, each of the side positioning structures includes:

[0023] A fixed tube is connected to the central hole via an auxiliary hole in the main body of the target base, and the other end of the fixed tube extends radially along the central hole; the fixed tube and the auxiliary hole together form a sliding space;

[0024] A sliding insert is slidably disposed in the sliding space, and the end of the sliding insert away from the central hole is the upper positioning part;

[0025] The power source for the extension of the sliding probe is external hydraulic drive;

[0026] Preferably, the end of the sliding insert near the central hole is provided with a piston that can slide and seal with the sliding space;

[0027] Preferably, the marker rod and the marker base are connected by threads;

[0028] As can be seen from the above technical solution, in this utility model, a bottom pin is provided at the bottom of the marker head seat. This bottom pin, through multiple lower positioning parts, can be inserted into the soil for positioning after the marker head seat is lowered to the bottom of the marker hole along with the marker body. Simultaneously, multiple side positioning structures are provided on the marker body. Each side positioning structure, through its outwardly extending side positioning part, can be inserted into the side wall of the marker hole after being fixed by the lower positioning part for repositioning. This dual positioning method effectively avoids displacement caused by uneven compression of the backfill soil or slight ground movement, effectively adapts to changes in groundwater level and minor vibrations, and ensures the stability of the stratified marker during long-term monitoring, thereby guaranteeing the continuity and accuracy of settlement data measurement.

[0029] The marker head is conical and forms a storage space with an open top, which can ensure the storage of a certain amount of backfill soil, thereby increasing its own weight and making the bottom pin more stably inserted into the soil, further ensuring the stability of the positioning, so that the layer marker can be stably centered. Attached Figure Description

[0030] Figure 1 A schematic diagram of a layered label structure provided for an embodiment of this utility model;

[0031] Figure 2 A schematic diagram of the structure of a layered base and header seat provided in this embodiment of the utility model. Figure 1 ;

[0032] Figure 3 A schematic diagram of the structure of a layered base and header seat provided in this embodiment of the utility model. Figure 2 ;

[0033] Figure 4 This is a schematic cross-sectional view of the main body of a layered bid base provided for an embodiment of the present utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Main body of the target; 11. Central hole; 12. Auxiliary holes;

[0036] 20. Header base; 21. Center column; 22. Support column; 23. Outer casing;

[0037] 30. Bottom pin; 31. Positioning cone;

[0038] 40. Benchmark;

[0039] 50. Side positioning structure; 51. Fixed tube; 52. Sliding insert; 53. Piston; 54. Spring; 55. Limiting ring. Detailed Implementation

[0040] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] This utility model discloses a layered label base, which can be seen in [reference]. Figure 1 and Figure 2 The system includes a base body 10, a head seat 20, a bottom pin 30, and side positioning structures 50. The base body 10 has a through central hole 11, one end of which serves as the interface for the marker rod 40. The head seat 20 is located on the side of the base body 10 away from the interface for the marker rod 40 and is detachably connected to the other end of the central hole 11. The bottom pin 30 is located at the end of the head seat away from the base body 10 and has multiple outwardly extending lower positioning portions that can be inserted into the bottom of the marker hole. Multiple side positioning structures 50 are provided, each side positioning structure 50 is arranged around the base body 10, and each side positioning structure 50 has an upper positioning portion that can extend radially along the central hole 11 and be inserted into the side wall of the marker hole.

[0042] Specifically, the lower positioning part of the bottom pin 30 and the upper positioning part of the side positioning structure 50 form a dual positioning, which effectively resists the displacement caused by uneven compression of the landfill soil or slight ground movement, adapts to changes in groundwater level and slight vibration, and ensures the stability of the device during long-term monitoring.

[0043] This embodiment provides a layered marker, which, compared with the prior art, features a bottom pin 30 at the bottom of the marker head seat 20. The bottom pin 30, through multiple lower positioning parts, can be inserted into the soil for positioning after the marker head seat 20 is lowered to the bottom of the marker hole along with the marker body 10. Simultaneously, multiple side positioning structures 50 are provided on the marker body 10. Each side positioning structure 50, through its outwardly extending side positioning part, can be inserted into the side wall of the marker hole after being fixed by the lower positioning part for repositioning. This dual positioning method effectively avoids displacement caused by uneven backfill soil compression or slight ground movement, effectively adapts to changes in groundwater level and minor vibrations, and ensures the stability of the layered marker during long-term monitoring, thereby guaranteeing the continuity and accuracy of settlement data measurement.

[0044] As a preferred embodiment of the header 20, see [link to relevant documentation]. Figure 2 and Figure 3The header holder 20 includes a central post 21, a housing 23, and support posts 22. The top end of the central post 21 is detachably connected to the bottom end of the central hole 11. The housing 23 has an open cavity for the bottom end of the central post 21 to extend into, and the housing 23 is fixedly connected to the bottom end of the central post 21. The bottom end of the housing 23 is connected to the bottom pin 30. Multiple support posts 22 are provided, and each support post 22 is arranged annularly at intervals along the axis of the central post 21. One end of each support post 22 is connected to the central post 21, and the other end is connected to the housing 23.

[0045] Specifically, the open mouth forms a storage space with an open top after the central column 21 and each supporting column 22 are installed.

[0046] The central post 21 can be detachably connected to the central hole 11 on the main body 10 of the marker, facilitating assembly and disassembly. The central post 21 also connects the outer casing 23 to the main body 10 of the marker. Each support post 22 connects the central post 21 and the outer casing 23, enhancing the overall structural strength of the marker head seat 20 while ensuring an open storage space at the top. This storage space allows for the storage of a certain amount of backfill soil, increasing its weight and enabling the bottom probe 30 to be inserted more stably into the soil, further ensuring positioning stability and ensuring the stratified marker remains stable in the center position.

[0047] Two support columns 22 can be provided, and the support columns 22 can be arranged radially along the central column 21.

[0048] As a preferred embodiment of the outer casing 23, see [link to relevant documentation]. Figure 3 The outer shell 23 has a conical shape with a large-diameter end and a small-diameter end, with the large-diameter end located above the small-diameter end. Correspondingly, the open cavity is a conical cavity. The conical structure guides the landfill soil to naturally accumulate within the storage space, increasing the device's self-weight (the self-weight increases by a certain percentage after soil storage), and forming a "downward-pressing" fixation with the bottom rod 30. The annular ribs enhance the outer shell 23's resistance to deformation, adapting to the impact force during gravel layer landfill. The diameter difference between the main body 10 and the outer shell 23 ensures that the outer shell 23 does not contact the borehole wall during sinking, preventing soil from falling off and blocking the channel. The stepped structure facilitates the formation of annular accumulation of landfill soil on the top of the outer shell 23, further improving the device's stability.

[0049] As a preferred embodiment of the central column 21, see [link to relevant documentation]. Figure 2 and Figure 4 The bottom end of the center column 21 is threaded to the center hole 11, which allows for quick assembly and disassembly of the head seat 20 and the base body 10, facilitating transportation and maintenance. A PTFE tape seal prevents hydraulic oil leakage or dirt from entering the center hole 11, ensuring the reliability of the hydraulic drive system.

[0050] As a preferred embodiment of the bottom probe 30, see [link to relevant documentation]. Figure 3The bottom drill bit 30 includes a drill bit seat and positioning cones 31. Multiple positioning cones 31 are provided, arranged in a ring at intervals. One end of each positioning cone 31 is fixedly connected to the drill bit seat, and the other end extends obliquely downwards. The positioning cone 31 serves as the lower positioning part; the conical drill bit seat guides the device to sink vertically. After the positioning cone 31 penetrates the soil at the bottom of the hole, it forms an "anchoring effect," enhancing the device's pull-out resistance.

[0051] As a preferred embodiment of the bottom probe 30, see [link to relevant documentation]. Figure 2 The drill bit holder has a conical shape and is coaxially set with the center hole 11. The coaxial design ensures that the verticality deviation during the sinking process is ≤.°. The polytetrafluoroethylene coating reduces the frictional resistance with the soil at the bottom of the hole during sinking and avoids tilting.

[0052] As a preferred embodiment of the side positioning structure 50, see [link to relevant documentation]. Figure 4 Each side positioning structure 50 includes a fixed tube 51 and a sliding pin 52. The fixed tube 51 is fixedly connected to the main body 10 of the target. One end of the fixed tube 51 communicates with the central hole 11 through an auxiliary hole 12 provided in the main body 10 of the target, and the other end of the fixed tube 51 extends radially along the central hole 11. The fixed tube 51 and the auxiliary hole 12 combine to form a sliding space. The sliding pin 52 is slidably disposed in the sliding space, and the end of the sliding pin 52 away from the central hole 11 is the upper positioning part. The power source for the extension of the sliding pin 52 is an external hydraulic drive, which enables the sliding pin 52 to extend and retract controllably, adapting to different soil hardness. The conical end easily penetrates the gaps between pebbles or the clay layer, forming a radial fixation and preventing the device from shifting vertically.

[0053] Regarding the driving of the sliding insert 52 involved in this embodiment, one possible implementation is that the top end of the central hole 11 in the base body 10 is connected to the marker rod 40, which can be a threaded connection. The marker rod 40 has a coaxial circular channel inside, which is connected to the central hole 11. After the marker rod 40 is connected to the base body 10, hydraulic oil can be injected into the circular channel and the central hole 11. When it is necessary to push the sliding insert 52 outward, hydraulic oil only needs to be injected into the circular channel at the top end of the marker rod 40 using a pressure pump, and the sliding insert 52 is pushed outward by hydraulic drive. When it is necessary to return the sliding insert 52 to the fixed tube 51, it only needs to be pressurized by contacting the pressure pump, or the hydraulic oil needs to be pumped back in the opposite direction.

[0054] As a preferred embodiment of the side positioning structure 50, see [link to relevant documentation]. Figure 4 The sliding probe 52 has a piston 53 at one end near the center hole 11, which can slide and seal with the sliding space. The piston 53 ensures that there is no leakage of hydraulic oil and simultaneously pushes multiple sets of sliding probes 52 out. The O-ring seal improves the sealing reliability, and the detachable design facilitates maintenance and replacement.

[0055] In addition, to increase the flexibility of the sliding probe 52, one possible solution for the side positioning structure 50 is that the outer diameter of the piston 53 is larger than the outer diameter of the sliding probe 52, and a limiting ring 55 is provided at the end of the fixing tube 51 away from the target body 10, with the inner diameter of the limiting ring 55 just large enough for the sliding probe 52 to pass through. A spring 54 can be provided between the limiting ring 55 and the piston 53, with the spring 54 sleeved on the sliding probe 52. The spring 54 can continuously spring the piston 53, giving the sliding probe 52 a tendency to move towards the central hole 11.

[0056] As a preferred embodiment of the subject 10, see [link to relevant documentation]. Figure 1 and Figure 4 The marker 40 is connected to the marker body 10 by threads. The threaded connection makes it easy to splice multiple marker 40 sections (single section length - m) according to the monitoring depth. The anti-loosening nut prevents the connection from loosening due to vibration during long-term use and ensures lossless transmission of settlement signal.

[0057] When the marker 40 consists of multiple sections, each section of marker 40 needs to be a hollow tube to ensure that each section of marker 40 can form a circular channel.

[0058] As a layered marker provided by this utility model, its specific working principle is as follows: First, pre-drill pre-embedded holes, and connect multiple sections of marker rod 40 and the marker body 1 through the marker rod 40 interface 10 to form a continuous monitoring chain. During the sinking process, the support column 22 on the outside of the central column 21 and the marker head seat 20 form an "inward" structure, the maximum diameter of which is smaller than the length of the side positioning structures 50, effectively reducing soil shedding. Second, the conical design of the drill bit 30 and the positioning cone 31 guides the device to sink vertically, reducing tilting deviation. After the device reaches the bottom of the hole, hydraulic oil is injected into the interior through the marker rod 40, and the pressure is maintained at ≥0.5MPa using a pressurizing device (such as a manual hydraulic pump) and held for more than half an hour. The hydraulic oil flows into the tee through the bottom end of the marker rod 40. The cavity synchronously pushes the piston part 53 in the side positioning structure 50 on both sides to slide along the slide groove, driving the sliding insertion rod 52 to extend to both sides. The conical design at the end of the sliding insertion rod 52 allows it to easily penetrate the soil layer, forming radial fixation to prevent the device from moving up and down. The sealing ring on the outside of the side positioning structure 50 ensures that the hydraulic oil does not leak, while blocking the soil from entering the slide groove, ensuring the flexibility of the sliding insertion rod 52. The "large at the top and small at the bottom" flat-bottomed conical structure of the head seat 20 forms an annular soil storage space. After the landfill soil is piled up here, it can increase the self-weight of the device and enhance the anti-buoyancy ability. The bottom rod 30 and the positioning cone 31 penetrate into the soil layer at the bottom of the hole. With the self-weight of the head seat 20 pressing down, the device is stably centered, avoiding the displacement of the monitoring point due to the slight movement of the stratum. At this point, the entire working process is completed.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A layered label, characterized in that, include: The main body of the marker has a through central hole, one end of which is the marker interface; The marker head seat is located on the side of the marker base body away from the marker rod interface, and is detachably connected to the other end of the center hole; The bottom pin is located at the end of the head seat away from the bottom body of the target, and has multiple outwardly extending lower positioning parts that can be inserted into the bottom of the target hole; The side positioning structure is provided in multiple ways, and each side positioning structure is arranged around the main body of the target base. Each side positioning structure has an upper positioning part that can extend radially along the central hole and insert into the side wall of the target hole.

2. The layered label as described in claim 1, characterized in that, The header includes: The top end of the central column is detachably connected to the bottom end of the central hole; The outer shell has an open cavity into which the bottom end of the central post extends, and the outer shell is fixedly connected to the bottom end of the central post; the bottom end of the outer shell is connected to the bottom pin. Multiple support columns are provided, and each support column is arranged in a ring at intervals along the axis of the central column. One end of each support column is connected to the central column, and the other end is connected to the outer shell. The open cavity forms a storage space with an open top after the central column and each of the supporting columns are installed.

3. A layered base as described in claim 2, characterized in that, The outer shell has a conical shape and has a large diameter end and a small diameter end, with the large diameter end located above the small diameter end; Correspondingly, the open cavity is a conical cavity.

4. A layered base as described in claim 3, characterized in that, The main body of the target base has a cylindrical shape; the diameter of the large-diameter end is larger than the diameter of the main body of the target base.

5. A layered base as described in claim 4, characterized in that, The central column is threaded to the bottom of the central hole.

6. A layered base as described in claim 1, characterized in that, The bottom probe includes: Socket; The positioning cone is provided in multiples, and the positioning cones are arranged in a ring at intervals; one end of each positioning cone is fixedly connected to the drill bit seat, and the other end extends obliquely downward; the positioning cone is the lower positioning part.

7. A layered base as described in claim 6, characterized in that, The drill bit holder has a conical shape and is coaxially arranged with the central hole.

8. A layered base as described in claim 1, characterized in that, Each of the aforementioned side positioning structures includes: A fixing tube is fixedly connected to the main body of the target base; one end of the fixing tube communicates with the central hole through an auxiliary hole provided in the main body of the target base, and the other end of the fixing tube extends radially along the central hole; the fixing tube and the auxiliary hole together form a sliding space; A sliding insert is slidably disposed in the sliding space, and the end of the sliding insert away from the central hole is the upper positioning part; The power source for the extension of the sliding probe is external hydraulic drive.

9. A layered base as described in claim 8, characterized in that, The sliding insert has a piston at one end near the central hole that can slide and seal with the sliding space.

10. A layered base as described in claim 2, characterized in that, The marker pole and the marker base are connected by threads.

Images