Recyclable soil settlement monitoring device and measuring method

Abstract

The invention discloses a recoverable soil body settlement monitoring device and a measurement method, and relates to the technical field of underground engineering measurement, the recoverable soil body settlement monitoring device enables a supporting body to be adjustable in length through a plurality of telescopic pieces which are sequentially connected in a sleeved mode, and a first measurement piece and a displacement sensor are arranged in each stretching-out telescopic piece; the second measuring piece is arranged outside the telescopic piece and detachably connected with the first measuring piece in the telescopic piece, when the device is used, the second measuring piece is pre-buried in a preset position of the corresponding depth of a soil body, and the length of the supporting body is adjusted according to the depth of the soil body to be measured, so that the extended telescopic piece corresponds to different soil body depth layers; the second measuring part of the telescopic part is connected with the pre-buried first measuring part, the settlement amount of the soil body is measured through the second measuring part, the displacement of the second measuring part drives the first measuring part to generate displacement, and the displacement of the first measuring part is measured through the displacement sensor, so that the settlement amount of the soil bodies with different depths can be detected in real time.

Description

Technical Field

[0001] The present application relates to the technical field of underground engineering measurement, and in particular to a recyclable soil settlement monitoring device and a measurement method. Background Art

[0002] As a new type of green energy, offshore wind power has been vigorously developed by the country, but it has the risk of uneven settlement and collapse on sites with liquefaction potential. This requires a monitoring device to predict site settlement in advance, but the soil modulus is in a dynamic change process during liquefaction and the degree of liquefaction at different depths is different, which makes multi-level settlement monitoring extremely difficult.

[0003] Current settlement monitoring technology mainly focuses on monitoring surface settlement, such as displacement meters or benchmark measurements. Through these devices, surface soil settlement data after liquefaction can be obtained, but this method has great limitations in deep soil monitoring, especially for dynamic settlement during liquefaction, the real-time monitoring capability of existing technologies is insufficient.

[0004] Surface displacement meters are commonly used in settlement monitoring of building foundations after an earthquake. They can reflect the subsidence of the surface soil, but they usually do not have sufficient sensitivity and detection capabilities for settlement changes in deep foundations (such as below 10 meters). In addition, surface displacement meters often cannot capture the entire settlement process in real time, especially in the early stages of liquefaction, when pore water pressure begins to rise. Displacement meters may not be able to promptly reflect the settlement trend caused by liquefaction due to data lag.

[0005] Some existing devices for deep settlement monitoring are mostly fixed installations, which are difficult to flexibly adjust at different depths or adapt to different geological environments. In actual operation, due to the heterogeneity of the soil layer, the settlement of shallow and deep soil bodies often varies greatly. Existing deep monitoring equipment cannot adapt to such changes and lacks an adjustable design based on different settlement requirements. Summary of the invention

[0006] The present application aims to solve one of the above-mentioned technical problems in the prior art. To this end, an embodiment of the present application provides a recyclable soil settlement monitoring device.

[0007] The embodiment of the present application also provides a measurement method based on a recyclable soil settlement monitoring device.

[0008] According to an embodiment of the first aspect of the present application, a recyclable soil settlement monitoring device is provided, including a support body, the support body including a plurality of telescopic parts which are sequentially socketed so that the length of the support body can be adjusted along the axial direction; a plurality of groups of measuring components, each of the telescopic parts is provided with the measuring component, the measuring components including a first measuring part, a second measuring part and a displacement sensor, the first measuring part is slidably arranged inside the telescopic part, and the first measuring part can slide along the axial direction of the support body, the second measuring part is arranged outside the support body, the second measuring part is detachably connected to the first measuring part, and the displacement sensor is used to detect the displacement change of the first measuring part.

[0009] The above-mentioned recyclable soil settlement monitoring device has at least the following beneficial effects: the support body is set to be adjustable in length through multiple telescopic parts that are connected in sequence, and a set of measuring components is set on each telescopic part, and a first measuring part and a displacement sensor are set inside each extended telescopic part, and the second measuring part is set outside the telescopic part and detachably connected to the first measuring part inside the telescopic part. When in use, the second measuring part is pre-buried in a preset position corresponding to the depth of the soil, and the length of the support body is adjusted according to the depth of the soil to be measured, so that the extended telescopic part corresponds to different soil depth layers, and the second measuring part of the telescopic part is connected to the pre-buried first measuring part, and the settlement of the soil is measured by the second measuring part, and the displacement of the second measuring part drives the displacement of the first measuring part, and the displacement of the first measuring part is measured by the displacement sensor, so that the settlement displacement of the soil at different depths can be detected in real time. The soil monitoring device of the present application can flexibly adjust the length according to the characteristics of the soil layers at different depths. Among them, the telescopic piece closest to the ground has the thickest diameter to accommodate larger settlements, while the telescopic piece far from the ground has a smaller diameter to monitor smaller settlements in deep soil. This can achieve all-round settlement monitoring from shallow to deep layers, filling the gap that existing technologies cannot accurately monitor deep settlements. When the measurement work is completed, the operator can remotely control the first measuring piece to separate from the second measuring piece, and then recover the support body, the first measuring piece, and the displacement sensor. This design not only reduces the disturbance to the soil, but also reduces the maintenance and replacement costs of the equipment, making it suitable for long-term, continuous foundation monitoring tasks.

[0010] According to the recyclable soil settlement monitoring device described in the embodiment of the first aspect of the present application, the number of the second measuring piece, the first measuring piece and the displacement sensor set in each group of the measuring components is two, one first measuring piece is connected to one second measuring piece, and one displacement sensor monitors one first measuring piece.

[0011] According to the recyclable soil settlement monitoring device described in the embodiment of the first aspect of the present application, the measuring component also includes a connecting rod, a slideway is arranged on the outer side of the connecting rod along the axial direction, and the first measuring piece is provided with a first sphere, which is slidably arranged in the slideway.

[0012] According to the recyclable soil settlement monitoring device described in the embodiment of the first aspect of the present application, the first measuring piece also includes an electromagnet and a current controller, and the current controller is used to control the internal current of the electromagnet so that the electromagnet can generate magnetic force to magnetically attract the second measuring piece.

[0013] According to the recyclable soil settlement monitoring device described in the embodiment of the first aspect of the present application, the second measuring part includes a settlement plate and a second sphere, the second sphere is a strong magnet ball, and a guide structure is provided outside the telescopic part to enable the second sphere to slide along the axial direction of the support body, and the settlement plate is perpendicular to the support body under the action of the guide structure.

[0014] According to the recyclable soil settlement monitoring device described in the embodiment of the first aspect of the present application, the guide structure includes a enclosure plate, the enclosure plate is welded to the outside of the telescopic member to form a guide channel, and the second sphere is arranged in the guide channel.

[0015] According to the recyclable soil settlement monitoring device described in the embodiment of the first aspect of the present application, a limiting groove is provided from one end to the other end of the enclosure plate, and the connecting portion of the settlement plate passes through the limiting groove to connect to the second sphere.

[0016] According to the recyclable soil settlement monitoring device described in the embodiment of the first aspect of the present application, a limiting structure is arranged between two adjacent telescopic members, and after the telescopic members are extended into place, the limiting structure is used to limit the relative movement of the two adjacent telescopic members.

[0017] According to the recyclable soil settlement monitoring device described in the embodiment of the first aspect of the present application, the limiting structure includes an elastic protrusion and a concave cavity. Among the two adjacent telescopic parts, the elastic protrusion is arranged on one of the telescopic parts, and the other telescopic part protrudes from the inside to the outside to form the concave cavity.

[0018] According to an embodiment of the second aspect of the present application, a measurement method based on the above-mentioned recyclable soil settlement monitoring device is provided, comprising the following steps:

[0019] A placement pit is excavated in the soil body to be measured, and a second measuring piece is pre-buried at a preset monitoring position on the pit wall of the placement pit;

[0020] According to the depth of the placement pit and the preset position of the second measuring piece, the extension quantity and length of the telescopic pieces of the support body are adjusted so that the first measuring piece on each telescopic piece corresponds to the second measuring piece one by one;

[0021] An anchoring base is arranged at the bottom of the placement pit, and the support body with adjusted length is fixed to the anchoring base so that the support body can be placed vertically;

[0022] After the first measuring piece is connected to the second measuring piece, backfill the placement pit with soil;

[0023] The settlement of the soil is measured by the second measuring piece, and the displacement of the second measuring piece drives the first measuring piece to be displaced. The displacement of the first measuring piece is measured by the displacement sensor, so that the settlement displacement of the soil at different depths can be detected in real time.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application is further described below with reference to the accompanying drawings and embodiments;

[0026] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0027] Figure 2 is a schematic structural diagram of a support body in an embodiment of the present application;

[0028] Figure 3 is a schematic structural diagram of a limiting structure in an embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the connection between the first sphere and the connecting rod in the embodiment of the present application. Figure 1 ;

[0030] Figure 5 This is a schematic diagram of the connection between the first sphere and the connecting rod in the embodiment of the present application. Figure 2 ;

[0031] Figure 6 This is a schematic diagram of the connection between the second measuring member and the telescopic member in the embodiment of the present application. Figure 1 ;

[0032] Figure 7 This is a schematic diagram of the connection between the second measuring member and the telescopic member in the embodiment of the present application. Figure 2 ;

[0033] Figure 8 It is a schematic diagram of the connection between the guide structure and the second sphere in an embodiment of the present application.

[0034] Figure numerals: connecting rod 1, monitoring host 2, current controller 3, wire 4, left laser displacement sensor 5, right laser displacement sensor 6, settlement plate 7, electromagnet 8, telescopic member 9, anchor base 10, anchor platform 11, first sphere 12, second sphere 13, elastic protrusion 14, concave cavity 15, enclosure 16, limit groove 17. DETAILED DESCRIPTION

[0035] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0036] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0039] Foundation liquefaction refers to the rapid rise in pore water pressure in saturated sand foundations under earthquakes or other dynamic loads, which leads to a sharp decrease in the shear strength of the soil, and the soil gradually loses its bearing capacity, causing the soil to settle significantly or even become unstable. Foundation liquefaction is a common and dangerous problem in marine engineering, construction engineering, bridge foundations and other infrastructure, especially in saturated sand and loose sediment formations. When foundation liquefaction occurs, the stability of buildings and infrastructure will be seriously threatened, which may cause foundation settlement, structural tilting, or even complete collapse.

[0040] The instability of foundation caused by liquefaction not only affects the foundation itself, but also may affect other physical parameters of the soil. For example, when liquefaction occurs, the compression modulus, density and permeability of the soil will change significantly. The dynamic changes of these physical properties make the existing foundation settlement assessment methods have great challenges in terms of accuracy.

[0041] In order to prevent disasters caused by liquefaction, engineers usually use methods such as strengthening the foundation or setting up protective measures to improve the foundation's ability to resist liquefaction. At the same time, on-site monitoring technology is also widely used to evaluate and predict the impact of liquefaction on foundation stability. The prediction of foundation liquefaction and settlement measurement is one of the important links in liquefaction protection engineering. By accurately monitoring the settlement of the soil, engineers can take timely measures to reduce the risks brought by liquefaction.

[0042] However, current monitoring methods are mostly focused on measuring surface settlement, and lack accurate monitoring methods and devices for deep soil settlement. After liquefaction occurs, the settlement of soil layers at different depths may vary significantly, especially in large structures supported by foundations. It is difficult to fully understand the impact of liquefaction on the entire foundation based solely on monitoring data of surface settlement. In order to improve the recognition of liquefaction and the judgment of foundation settlement, there is an urgent need for a device that can monitor settlement at multiple depth levels.

[0043] At present, the measurement methods for liquefaction settlement are mainly focused on the monitoring of surface settlement. The existing technical solutions mainly include the following two types: 1. displacement meter surface measurement method; 2. T&S method (shear stress-volume strain method).

[0044] The displacement meter surface measurement method is usually used to measure the settlement of the ground surface through the displacement meter. The displacement meter is usually fixed on a gantry or bracket, and its probe is in contact with the ground or the surface of the saturated sand foundation. When liquefaction occurs, the soil settles and the displacement meter records the settlement. After liquefaction, wait for the pore water pressure to completely dissipate, then read the value of the displacement meter to determine the final settlement of the foundation.

[0045] The advantages of the displacement meter surface measurement method are: easy operation, good economy, and the ability to provide surface settlement data after liquefaction occurs.

[0046] Disadvantages of the displacement meter surface measurement method: This method is only applicable to the settlement monitoring of the surface soil, and cannot monitor the settlement of the deep soil. Since foundation liquefaction usually shows different settlement characteristics at different depths, the surface data cannot fully reflect the actual state of the foundation, which can easily lead to underestimation and misjudgment of the settlement.

[0047] The T&S method uses an empirical formula based on the maximum shear stress ratio and relative density to estimate the volume strain of the foundation soil during liquefaction. The settlement is further inferred by estimating the volume change. This method relies on the known relationship between soil shear stress and volume strain, and obtains settlement predictions after liquefaction through experiments or calculations.

[0048] The T&S method relies on empirical formulas and can derive settlement amounts by extrapolation without the need for complex on-site testing. It is therefore suitable for rapid estimation of settlement amounts in sites where testing equipment is lacking.

[0049] The T&S method is an empirical estimate with low accuracy and large errors. The factors affecting settlement calculation are very complex, including soil type, relative density, loading conditions, etc. Since the formula is based on experience and assumptions, this method cannot accurately reflect the actual settlement changes, especially in heterogeneous soil layers or complex geological conditions, and its accuracy is limited.

[0050] In order to overcome the shortcomings of surface measurements, some deep settlement monitoring methods have been developed. For example, deep buried displacement sensor systems record settlement at different depths by arranging multiple sensors underground. However, these systems are often difficult to recover, have high maintenance costs, and lack flexibility. For large-scale projects or long-term monitoring needs, existing deep settlement monitoring systems often face problems such as difficulty in data transmission, easy damage to equipment, and difficulty in recovery.

[0051] In addition, in the prior art, the settlement structure is usually relatively fixed and cannot be adjusted according to the settlement amount of soil at different depths, resulting in insufficient accuracy of shallow settlement and deep monitoring precision.

[0052] Other existing technologies such as settlement towers and foundation penetration tests are also used to monitor soil settlement, but these methods are mainly used for laboratory or small-scale field monitoring and are difficult to cope with the complex situation of large-scale foundation settlement. In actual projects, especially for large-scale projects with saturated sand foundations, existing technologies are difficult to provide sufficiently accurate and continuous monitoring data, and it is also difficult to reflect the dynamic settlement of soil liquefaction in real time.

[0053] For this purpose, refer to Figure 1 The present application provides a recyclable soil settlement monitoring device that can meet the needs of multi-level settlement monitoring, dynamic real-time monitoring, and flexible deployment and recovery.

[0054] Specifically, the recyclable soil settlement monitoring device of the present application includes a support body and several groups of measurement components.

[0055] Among them, Figure 2As shown, the support body includes a plurality of telescopic members 9 which are sleeved in sequence, so that the length of the support body can be adjusted in the axial direction. The telescopic members 9 are cylindrically designed to facilitate sleeve connection and telescopic extension. When all the telescopic members 9 are extended, the diameter of the telescopic members 9 gradually decreases from one end to the other end of the support body, wherein the diameter of the telescopic member 9 sleeved on the outermost side is the largest, and the diameter of the telescopic member 9 on the innermost side is the smallest. Each telescopic member 9 is provided with a measuring component.

[0056] The measuring component includes a first measuring piece, a second measuring piece and a displacement sensor. The first measuring piece is slidably arranged inside the telescopic piece 9 and can slide along the axial direction of the support body. The second measuring piece is arranged outside the support body and is separately connected to the first measuring piece. The displacement sensor is used to detect the displacement change of the first measuring piece.

[0057] When in use, each extended telescopic member 9 is provided with a first measuring member and a displacement sensor, and the second measuring member is provided outside the telescopic member 9 and detachably connected to the first measuring member inside the telescopic member 9. The second measuring member is pre-buried in a preset position corresponding to the depth of the soil, and the length of the support body is adjusted according to the depth of the soil to be measured so that the extended telescopic member 9 corresponds to different soil depth layers, and the second measuring member of the telescopic member 9 is connected to the pre-buried first measuring member. The settlement of the soil is measured by the second measuring member, and the displacement of the second measuring member drives the displacement of the first measuring member. The displacement of the first measuring member is measured by the displacement sensor, so that the settlement displacement of the soil at different depths can be detected in real time.

[0058] The soil monitoring device of the present application can flexibly adjust the length according to the characteristics of soil layers at different depths. Among them, the telescopic member 9 closest to the ground has the thickest diameter to adapt to larger settlements, and the telescopic member 9 far from the ground has a smaller diameter to monitor smaller settlements of deep soil bodies, which can realize all-round settlement monitoring from shallow to deep layers, filling the gap that the existing technology cannot accurately monitor deep settlements.

[0059] When the measurement work is completed, the operator can remotely control the first measuring piece to separate from the second measuring piece, and then recover the support body, the first measuring piece and the displacement sensor. This design not only reduces the disturbance to the soil, but also reduces the maintenance and replacement costs of the equipment, and is suitable for long-term, continuous foundation monitoring tasks.

[0060] Most of the existing settlement monitoring equipment can only provide a single level of data records and cannot achieve comparative monitoring. For example, existing displacement sensors can usually only monitor displacement in a single direction and cannot provide settlement information in more dimensions. Due to the lack of comprehensive comparison of settlements in different directions and at different levels, it is difficult for existing systems to accurately analyze the uniformity of foundation settlement and potential horizontal displacement. Under complex geological conditions, foundation settlement may not occur uniformly, but may be accompanied by uneven settlement and lateral displacement. Existing technologies have obvious deficiencies in identifying these uneven settlements or lateral displacements.

[0061] To solve the above problems, in some embodiments, each group of measuring components includes two second measuring pieces, first measuring pieces and displacement sensors. The second measuring pieces are distributed on the outside of the support body, one first measuring piece is connected to one second measuring piece, and one displacement sensor monitors one first measuring piece.

[0062] Each telescopic member 9 is provided with two second measuring members, a first measuring member and a displacement sensor, which are used to monitor the soil settlement on both sides of the same telescopic member 9. The two displacement sensors can be divided into a left laser displacement sensor 5 and a right laser displacement sensor 6. The dual displacement sensor comparison design is adopted to realize real-time monitoring and comparative analysis of settlement in different directions and at different levels. The left-right symmetrical sensor design can capture the uneven settlement and potential lateral displacement of the same layer of soil. This comparative data analysis helps to identify potential structural problems in the foundation and improve the monitoring accuracy and early warning capability of the system.

[0063] In some embodiments, such as Figure 1 , Figure 4 , Figure 5 As shown, the measuring assembly also includes a connecting rod 1, which is detachably arranged in the support body, and a slideway is arranged on the outer side of the connecting rod 1 in the axial direction, and the first measuring piece is provided with a first sphere 12, and the first sphere 12 is slidably arranged in the slideway. The connecting rod 1 runs through the entire support body, and forms a slideway through two grooves for the first measuring piece to slide up and down, and can also serve as a wiring channel for the wire 4.

[0064] The cooperation between the first sphere 12 and the slideway enables the first measuring piece to follow the movement of the second measuring piece, ensuring that the soil displacement measured by the second measuring piece can be transmitted to the first measuring piece so that it can be monitored by the displacement sensor.

[0065] The displacement sensor is fixed to the inner side of the telescopic member 9 by bolts. Each telescopic member is equipped with a pair of left-right symmetrical displacement sensors. The main function of these sensors is to monitor the displacement of the first measuring member and identify the uneven settlement or lateral displacement of the soil by comparing the sensor readings on the left and right sides.

[0066] The recyclable soil settlement monitoring device of the present application also includes a monitoring host 2, a monitoring host 2 digital data acquisition instrument, real-time monitoring of the data collected by the displacement sensor and data analysis. When there is a difference in the data, the system can identify uneven settlement or lateral displacement of the soil. This function helps engineers identify potential problems with the soil, such as soil tilt or uneven settlement.

[0067] In some embodiments, the first measuring piece also includes an electromagnet 8 and a current controller 3. The current controller 3 is used to control the internal current of the electromagnet 8 so that the electromagnet 8 can generate magnetic force to attract the second measuring piece. The electromagnet 8 is connected to the first sphere 12, and the electromagnet 8 is also close to the inner wall of the telescopic member 9 so that the generated magnetic force can better act on the second measuring piece. The current controller 3 is arranged outside the ground, and the current controller 3 is connected to the electromagnet 8 through the wire 4. By controlling the current, the electromagnet 8 becomes an electromagnet, which can control the generation and disappearance of the magnetic force in real time. It is also convenient for the first measuring piece to be quickly separated or quickly connected with the second measuring piece, and it is also convenient for the subsequent recovery of the device.

[0068] like Figure 6 and Figure 7 As shown, the second measuring piece includes a sedimentation plate 7 and a second sphere 13. The second sphere 13 is a strong magnet ball. A guide structure is provided outside the telescopic piece 9 so that the second sphere 13 can slide along the axial direction of the support body. The sedimentation plate 7 is perpendicular to the support body under the action of the guide structure.

[0069] In some embodiments, the guide structure includes a surrounding plate 16, which is welded to the outside of the telescopic member 9 to form a guide channel, and the second sphere 13 is disposed in the guide channel.

[0070] In some embodiments, such as Figure 8 As shown, the enclosure 16 is provided with a limit groove 17 from one end to the other end, and the connection portion of the settlement plate 7 passes through the limit groove 17 to connect the second sphere 13. The limit groove 17 plays a guiding role, and can also keep the settlement plate 7 in a horizontal state. When the subsequent device is recovered, the support body is pulled out of the ground. Since the settlement plate 7 is pre-buried in the soil, when the support body is separated from the ground, the settlement plate 7 takes the second sphere 13 out of the guide structure.

[0071] When the soil settles, the settlement of the soil drives the settlement plate 7 to move in the vertical direction, and then drives the second sphere 13 to move in the vertical direction in the guide channel. Since the electromagnet 8 is connected to the second sphere 13 through magnetic force, and the first sphere 12 is slidably connected to the connecting rod 1, the movement of the settlement plate 7 can be converted into the movement of the electromagnet 8, and then the settlement of the soil can be monitored through the displacement sensor.

[0072] Specifically, the electromagnet 8 is an electromagnet when powered, and can be paired with the second sphere 13. In the paired state, the electromagnet 8, the first sphere 12, the second sphere 13 and the settlement plate 7 move together to form a moving whole. When the soil settles, the electromagnet 8, the first sphere 12, the second sphere 13 and the settlement plate 7 move together, and the displacement sensor detects the settlement of the first measuring piece, thereby achieving the purpose of settlement measurement; in the power-off state, the electromagnet 8 loses its magnetism, and the settlement plate 7 detaches, thereby controlling the locking and unlocking states of the settlement plate 7.

[0073] When the above-mentioned recyclable soil settlement monitoring device is recovered, after the electromagnet 8 is powered off, the second sphere 13 is not connected to the first measuring piece, and the displacement sensor and the support body part can be extracted and recovered by the lifting equipment, while the settlement plate 7 of the second measuring piece remains in the formation as a reference point. The recovered displacement sensor and support body can be redeployed to other locations after maintenance.

[0074] In some embodiments, such as Figure 2 and Figure 3 As shown, a limiting structure is provided between two adjacent telescopic members 9. After the telescopic members 9 are extended to the right position, the limiting structure is used to limit the relative movement of the two adjacent telescopic members 9.

[0075] Specifically, the limiting structure includes an elastic protrusion 14 and a concave cavity 15 . Among two adjacent telescopic members 9 , one telescopic member 9 is provided with an elastic protrusion 14 , and the other telescopic member 9 protrudes from the inside to the outside to form a concave cavity 15 .

[0076] In order to prevent the telescopic part 9 from accidentally sliding during the sedimentation process, the limiting structure is such that when the two telescopic parts 9 are connected, the elastic protrusion 14 of one telescopic part 9 will move to the position of the concave cavity 15 of the other telescopic part 9. At this time, the protrusion is no longer under the pressure of the other telescopic part 9, and the elastic protrusion 14 is located in the concave cavity 15, thereby preventing the telescopic part 9 from continuing to move upward, ensuring that it can be stably fixed after extension and contraction, thereby avoiding monitoring errors.

[0077] In some embodiments, the present application further provides a measurement method of the above-mentioned recyclable soil settlement monitoring device, comprising the following steps:

[0078] A placement pit is excavated in the soil body to be measured, and a second measuring piece is pre-buried at a preset monitoring position on the pit wall of the placement pit.

[0079] The extension quantity and length of the telescopic members 9 of the support body are adjusted according to the depth of the placement pit and the preset position of the second measuring member, so that the first measuring member on each telescopic member 9 corresponds to the second measuring member one by one.

[0080] An anchor base 10 is set at the bottom of the placement pit, and the support body with adjusted length is fixed to the anchor base 10 so that the support body can be placed vertically, wherein the anchor base 10 has a U-shaped structure with an outer flap, so that the support body is kept vertically placed. In some embodiments, in order to facilitate the rapid placement of the anchor base 10, cement is poured at the bottom of the placement pit to form an anchor platform 11.

[0081] After the above is completed, the first measuring piece is connected to the second measuring piece, and soil is backfilled into the placement pit to bury the support body in the placement pit and keep it in a vertical state.

[0082] The settlement of the soil is measured by the second measuring piece, and the displacement of the second measuring piece drives the first measuring piece to be displaced. The displacement of the first measuring piece is measured by the displacement sensor, so that the settlement displacement of the soil at different depths can be detected in real time.

[0083] The recyclable soil settlement monitoring device of the present application can be integrated with the existing remote monitoring platform and intelligent data analysis system, and transmit real-time data to the monitoring center through wireless communication technology or wired connection to form a complete settlement monitoring system, providing a more intelligent solution for the project.

[0084] Compared with the existing technology, the retractable soil settlement monitoring device of the present application has a multi-layer monitoring function. It can be flexibly adjusted according to the settlement characteristics of soil at different depths through a retractable structure, adapt to settlement changes of different magnitudes in shallow and deep layers, and accurately capture settlement data at different depths.

[0085] The recyclable soil settlement monitoring device of the present application can also be detached through electromagnetic power off, so that the equipment can be recovered and reused without human intervention, thus reducing equipment maintenance costs and being particularly suitable for long-term settlement monitoring projects.

[0086] The recyclable soil settlement monitoring device of the present application compares the settlement data on the left and right sides through dual displacement sensors. The product can not only monitor vertical settlement, but also identify uneven settlement and lateral displacement, thereby improving the accuracy of monitoring.

[0087] The recyclable soil settlement monitoring device of the present application is equipped with an automated data analysis system through the monitoring host 2 and the displacement sensor, which can collect settlement data in real time, generate a settlement trend report, and automatically issue a warning signal when abnormal settlement occurs.

[0088] The recyclable soil settlement monitoring device of the present application adopts a telescopic design to make the equipment suitable for various geological conditions. The support tubes of different depths can be flexibly adjusted by adjusting the telescopic member 9 to meet the multi-level monitoring needs in complex environments.

[0089] The following are applicable scenarios of the recyclable soil settlement monitoring device of this application:

[0090] Bridge foundation settlement monitoring: This device can be used for long-term foundation settlement monitoring of bridges, especially in earthquake zones and areas with high risk of liquefaction. Through multi-level settlement monitoring and data comparison and analysis, the product can identify possible uneven settlement problems of bridge foundations, issue early warnings, and prevent structural damage.

[0091] High-rise building foundation settlement monitoring: For high-rise building projects, long-term monitoring of foundation settlement is essential. This product can capture settlement data at different depths through multi-layer sensors, provide accurate settlement trend analysis, help engineers predict foundation problems in advance, and ensure the safety of the building.

[0092] Marine engineering and shore-based settlement monitoring: The product is suitable for complex marine engineering projects, capable of monitoring seabed settlement and collecting and analyzing settlement data in real time during construction. Through the automatic recovery mechanism, the equipment can be reused after completing the monitoring task, reducing the loss of equipment in the marine environment.

[0093] Underground tunnel and subway construction monitoring: During the construction of underground tunnels or subways, the settlement monitoring of the foundation is very important. The device can be buried in soil layers of different depths to monitor the settlement of the construction area in real time to ensure construction safety.

[0094] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A recyclable soil settlement monitoring device, characterized in that: include A support body, the support body comprising a plurality of telescopic parts which are sleeved in sequence, so that the length of the support body can be adjusted along the axial direction; Several groups of measuring components, each of the telescopic parts is provided with the measuring components, the measuring components include a first measuring part, a second measuring part and a displacement sensor, the first measuring part is slidably arranged inside the telescopic part, and the first measuring part can slide along the axial direction of the support body, the second measuring part is arranged outside the support body, the second measuring part is detachably connected to the first measuring part, and the displacement sensor is used to detect the displacement change of the first measuring part.

2. The recyclable soil settlement monitoring device according to claim 1 is characterized in that: The number of the second measuring piece, the first measuring piece and the displacement sensor in each group of the measuring components is two, one first measuring piece is connected to one second measuring piece, and one displacement sensor monitors one first measuring piece.

3. The recyclable soil settlement monitoring device according to claim 2 is characterized in that: The measuring assembly also includes a connecting rod, and a slideway is arranged on the outer side of the connecting rod along the axial direction. The first measuring member is provided with a first sphere, and the first sphere is slidably arranged in the slideway.

4. The recyclable soil settlement monitoring device according to claim 2 is characterized in that: The first measuring member further comprises an electromagnet and a current controller, wherein the current controller is used to control the internal current of the electromagnet to be turned on and off so that the electromagnet can generate magnetic force to magnetically attract the second measuring member.

5. The recyclable soil settlement monitoring device according to claim 4 is characterized in that: The second measuring piece includes a sedimentation plate and a second sphere, the second sphere is a strong magnet ball, a guide structure is arranged outside the telescopic piece so that the second sphere can slide along the axial direction of the support body, and the sedimentation plate is perpendicular to the support body under the action of the guide structure.

6. The recyclable soil settlement monitoring device according to claim 5 is characterized in that: The guide structure comprises a surrounding plate, the surrounding plate is welded to the outside of the telescopic member to form a guide channel, and the second sphere is arranged in the guide channel.

7. The recyclable soil settlement monitoring device according to claim 6 is characterized in that: The enclosure plate is provided with a limiting groove from one end to the other end, and the connecting portion of the settling plate passes through the limiting groove to connect with the second sphere.

8. The recyclable soil settlement monitoring device according to claim 1 is characterized in that: A limiting structure is arranged between two adjacent telescopic members. After the telescopic members are extended to a certain position, the limiting structure is used to limit the relative movement of the two adjacent telescopic members.

9. The recyclable soil settlement monitoring device according to claim 8, characterized in that: The limiting structure comprises an elastic convex point and a concave cavity. Among the two adjacent telescopic parts, one of the telescopic parts is provided with the elastic convex point, and the other telescopic part bulges from the inside to the outside to form the concave cavity.

10. A measurement method based on the recyclable soil settlement monitoring device according to any one of claims 1 to 9, characterized in that: The steps include: A placement pit is excavated in the soil body to be measured, and a second measuring piece is pre-buried at a preset monitoring position on the pit wall of the placement pit; According to the depth of the placement pit and the preset position of the second measuring piece, the extension quantity and length of the telescopic pieces of the support body are adjusted so that the first measuring piece on each telescopic piece corresponds to the second measuring piece one by one; An anchoring base is arranged at the bottom of the placement pit, and the support body with adjusted length is fixed to the anchoring base so that the support body can be placed vertically; After the first measuring piece is connected to the second measuring piece, backfill the placement pit with soil; The settlement of the soil is measured by the second measuring piece, and the displacement of the second measuring piece drives the first measuring piece to be displaced. The displacement of the first measuring piece is measured by the displacement sensor, so that the settlement displacement of the soil at different depths can be detected in real time.

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