A recyclable underground pipeline settlement monitoring device and method

Abstract

The present invention discloses a recyclable underground pipeline settlement monitoring device and method, the device comprises an inclinometer tube mechanism that can accommodate a plurality of hydraulic settlement meter units connected in sequence, one end of the plurality of hydraulic settlement meter units connected in sequence is connected to an automatic acquisition control terminal arranged on the ground, and the other end of the plurality of hydraulic settlement meter units connected in sequence is connected to a reference base arranged on the ground; the method comprises the following steps: 1. installing the inclinometer tube mechanism; 2. installing the hydraulic settlement meter unit; 3. installing the hydraulic settlement meter unit into the inclinometer tube; 4. connecting the automatic acquisition control terminal and the reference base; 5. monitoring the settlement of the underground pipeline; 6. recovering the hydraulic settlement meter after the monitoring is completed. The present invention effectively installs the hydraulic settlement meter into the interior of the inclinometer tube, ensures that it is deformed and stressed in coordination with the pipeline, and realizes the full-process automatic monitoring of the linear deformation of the pipeline, and finally the hydraulic settlement meter can be taken out as a whole after the measurement work is completed, and recovered for reuse.

Description

Technical Field

[0001] The invention belongs to the technical field of geotechnical engineering monitoring and detection, and in particular relates to a recoverable underground pipeline settlement monitoring device and method. Background Art

[0002] Underground pipelines are pipelines laid underground for the transportation of liquids, gases or loose solids, and are concealed projects. During the construction process, underground pipelines often encounter adverse geological conditions such as soft soil layers, collapsible loess, and miscellaneous fill. If the foundation is not properly treated, the underground pipeline is prone to settlement and uneven settlement after construction, causing dislocation, leakage and other defects at the pipe section joints. If not discovered in time, the seepage of rain and sewage pipelines in the pipeline will cause the outside of the pipe to be emptied. As time goes by, it will cause the ground to crack and collapse, which will seriously threaten the safety and use of nearby buildings (structures). For this reason, when constructing underground pipelines in some areas with poor geological conditions, it is necessary to monitor the settlement of the underground pipeline during use and take corresponding protective measures in time to avoid the settlement of the pipeline exceeding the allowable range and ensure that the project is in a safe and controllable state.

[0003] At present, there are two methods for observing the settlement of underground pipelines: indirect measurement points and direct measurement points: (1) Indirect measurement points are set on the ground surface corresponding to the axis of the underground pipeline or on the manhole cover of the pipeline. Since the pipeline is not tested directly, the test accuracy is poor. The advantage of this method is that it can avoid breaking the ground and excavation. It is sometimes used in places with low defense standards or areas with dense personnel and traffic. (2) Direct measurement points are directly observed after burying some devices. The test accuracy of this method is higher. For pipelines that are difficult to expose the entire line, at least the joints should be dug out and measurement points should be set at the joints. Common schemes for direct measurement points are: ① Hoop type: A ring made of flat iron (with a diameter slightly larger than the diameter of the pipeline) connects the measuring rod and the pipeline into a whole. The measuring rod extends to the ground, and a corresponding manhole is arranged on the ground to ensure the normal passage of roads, traffic and personnel. The characteristic of the clamp-type measuring point is high monitoring accuracy. Its disadvantage is that the road surface must be chiseled and dug to the bottom of the pipeline, which is difficult to do for urban main roads. However, for secondary roads and very important underground pipelines, such as high-pressure gas pipelines, it is necessary and feasible to set up measuring points according to this scheme and conduct strict observation. ② Casing type: Use a hard plastic pipe or metal pipe to set or bury it between the top surface of the measured pipeline and the ground. When measuring, put the measuring rod into the buried pipe, and then put the ruler on the top of the measuring rod. As long as the position of the measuring rod is fixed, the test results can reflect the changes in the pipeline. The characteristics of this method are simple and easy to operate, and it can avoid road excavation, but its disadvantage is that the monitoring accuracy is low. In addition, although the method of burying sensors in the top surface of underground pipelines can observe the deformation of pipelines, they cannot be recovered after burying, resulting in insufficient utilization of monitoring instruments and high monitoring costs.

[0004] In addition, some new monitoring devices and methods have been developed in China. For example: (1) The invention patent with publication number CN102692209A discloses "a monitoring structure and a monitoring method for pipeline settlement conditions". The monitoring structure includes a section of pipeline to be monitored and inspection wells arranged at both ends of the section of pipeline. The two inspection wells are provided with detection marks. A number of settlement marks made of stainless round steel or round steel with anti-corrosion measures are arranged on the pipeline between the two inspection wells. A protective tube filled with medium-coarse sand is arranged outside the settlement mark. The monitoring method includes the steps of fixing the settlement mark, setting a protective tube outside the settlement mark, filling the protective tube with medium-coarse sand, monitoring and recording monitoring data, drawing curves and calculating the settlement amount. (2) The invention patent with publication number CN110044325A discloses "an underground pipeline settlement monitoring device and a monitoring method". The invention patent "Pipeline deformation monitoring method" with publication number CN112747715A discloses a pipeline deformation monitoring method, which belongs to the field of underground pipeline monitoring technology, including four steps: measuring point arrangement, measuring point burial, deformation measurement and measurement data collation and analysis. In the step operation, the underground closed pipeline adopts a clamp-type buried point, and the indirect measurement method adopts an intuitive (conventional) method. The measurement method is easy to operate, and the measurement results are intuitive and highly accurate. They can accurately reflect the deformation of the pipeline. Through the combination of drawing method and model method, the measured data can be processed and integrated in a timely manner to obtain the degree and law of pipeline deformation, thereby effectively guiding the construction and controlling the construction speed. Corresponding effective control measures can be taken during the construction to ensure the normal operation of the construction and pipeline.

[0005] The above methods are all "point-type" and manual observations, which make it difficult to fully monitor the settlement and deformation of the entire underground pipeline longitudinal section, often resulting in the inability to accurately grasp the location of the occurrence. The monitoring elements cannot be recovered and reused after being buried. Therefore, there is an urgent need to develop a recyclable underground pipeline settlement monitoring device and method to achieve "linear" and automated observation of pipeline settlement, while also allowing the recovery of major monitoring instruments. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a recyclable underground pipeline settlement monitoring device in view of the deficiencies in the above-mentioned prior art. The device has a novel and reasonable design and effectively installs the hydraulic settlement meter inside the inclinometer tube to ensure coordinated deformation and integral force with the pipeline, and realizes full-process automated monitoring of the linear deformation of the pipeline. Finally, after the measurement work is completed, the hydraulic settlement meter can be taken out as a whole and recycled for reuse, which is convenient for promotion and use.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a retrievable underground pipeline settlement monitoring device, characterized in that: it includes an inclinometer tube mechanism fixed on the top of the pipeline and used to accommodate a plurality of hydraulic settlement meter units connected in sequence, one end of the plurality of hydraulic settlement meter units connected in sequence is connected to an automatic acquisition control terminal arranged on the ground, and the other end of the plurality of hydraulic settlement meter units connected in sequence is connected to a reference foundation arranged on the ground;

[0008] The hydraulic sedimentation meter unit includes a stabilizing device for installing the hydraulic sedimentation meter, the stabilizing device includes a fixed slide rail and two straightening guide devices arranged at both ends of the fixed slide rail, the end of the fixed slide rail is sleeved with a clamp structure device connected to the straightening guide device and used to limit the hydraulic sedimentation meter, the straightening guide device is provided with reserved holes on both sides along the length direction, and the outer end of the straightening guide device is provided with a steel ring. The hydraulic sedimentation meter includes a sedimentation meter body, and the two ends of the sedimentation meter body are respectively provided with a cable interface, an air pipe interface, a liquid pipe interface and a protective cover of a hollow structure, and the steel rings at the ends of two adjacent hydraulic sedimentation meter units are connected by a steel wire rope;

[0009] The reference foundation includes a reference base, a water tank and a reference settlement meter both of which are arranged on the reference base. A ventilation pipe is arranged on the top of the water tank, and a liquid pipe is connected to the lower part of the water tank, which connects the reference settlement meter and multiple hydraulic settlement meters in turn. An air pipe is connected to the upper part of the water tank, and the air pipe connects the reference settlement meter and multiple hydraulic settlement meters in turn. The reference settlement meter and the hydraulic settlement meter at the corresponding end, two adjacent hydraulic settlement meters, and the automatic acquisition control terminal and the hydraulic settlement meter at the corresponding end are connected by cables respectively.

[0010] The above-mentioned recyclable underground pipeline settlement monitoring device is characterized in that: the inclinometer tube mechanism includes an inclinometer tube and an inclinometer tube bracket arranged between the inclinometer tube and the pipeline, the inclinometer tube bracket is fixed to the top of the pipeline by fixing screws, and a rubber pad is arranged on the top of the inclinometer tube.

[0011] The above-mentioned recyclable underground pipeline settlement monitoring device is characterized in that: the straightening guide device includes a shell and a mounting plate arranged in the middle of the shell, the mounting plate is provided with a rotating shaft for installing a connecting rod, and both ends of the connecting rod are respectively provided with guide wheels extending out of the shell and cooperating with the inner wall of the inclinometer tube, and torsion springs for limiting are respectively provided at positions on both sides of the connecting rod on the mounting plate.

[0012] The above-mentioned recoverable underground pipeline settlement monitoring device is characterized in that: the clamp structure device includes a clamp sleeved on the fixed slide rail, and a spring is connected between the clamp and the straightening guide device.

[0013] The above-mentioned recoverable underground pipeline settlement monitoring device is characterized in that the pipeline is arranged on an underground concrete cushion layer, and a pipeline wrapping foundation for wrapping the pipeline is arranged on the concrete cushion layer.

[0014] At the same time, the present invention also discloses a method for monitoring the settlement of a recoverable underground pipeline with simple steps and reasonable design, which is characterized in that the method comprises the following steps:

[0015] Step 1: Install the inclinometer tube mechanism: Fix the inclinometer tube mechanism on the top of the pipeline, reserve a steel wire rope in the inclinometer tube, seal both ends of the inclinometer tube, wait for the surveyor to record the coordinate data of both ends, and after the pipeline is backfilled, dig both ends of the inclinometer tube to expose at least 1m according to the measurement data, clean up the loose soil, and keep the working surface clean;

[0016] Step 2: Install the hydraulic sedimentation meter unit. The process is as follows:

[0017] Step 201, remove the protective cover of the hydraulic sedimentation meter unit, pass the air pipe, liquid pipe and cable through the reserved hole and clamp of the stabilizing device, and then pass through the protective cover to connect to the corresponding interface of the sedimentation meter body. After the connecting pipelines on both sides of the hydraulic sedimentation meter are connected, fix the protective cover, wherein the connecting pipelines include the air pipe, liquid pipe and cable;

[0018] Step 202, press the clamps of the stabilizing device toward both sides until the distance between the two clamps is greater than the length of the hydraulic sedimentation gauge, put the hydraulic sedimentation gauge into the fixed slide rail and make the protective cover at one end of the hydraulic sedimentation gauge fit with the clamps, slowly straighten the connecting pipelines on both sides of the stabilizing device, and slowly loosen the clamps to make the springs rebound until all the clamps on both sides fit with the protective covers;

[0019] Step 3: Install the hydraulic sedimentation meter unit into the inclinometer tube. The process is as follows:

[0020] Step 301, connect the installed first hydraulic sedimentation meter unit with the reserved steel wire rope, tie the cable to the reserved steel wire rope, put it into the inclinometer tube, and fix the reserved steel wire rope after pulling it in a certain distance, so that the air pipe, liquid pipe, cable and steel ring close to the inclinometer tube opening are exposed outside the inclinometer tube;

[0021] Step 302: Connect the air pipe, liquid pipe, and cable exposed outside the inclinometer tube to the next hydraulic sedimentation meter unit according to step 301, and fix a section of steel wire rope on the steel ring between the two hydraulic sedimentation meter units, pull the reserved steel wire rope, and pull the connected next hydraulic sedimentation meter unit into the inclinometer tube for a distance, so that the air pipe, liquid pipe, cable, and steel ring of the next hydraulic sedimentation meter unit are exposed outside the inclinometer tube and the reserved steel wire rope is fixed;

[0022] Step 303, repeating step 302 until all hydraulic sedimentation meter units are pulled into the inclinometer tube, and connecting and fixing the steel wire rope to the steel ring of the last hydraulic sedimentation meter unit;

[0023] Step 4. Connect the automatic acquisition control terminal and the reference base: connect the air pipe, liquid pipe and cable of the last hydraulic sedimentation meter unit in the inclinometer tube to the reference sedimentation meter on the reference base, connect the air pipe and liquid pipe of the reference sedimentation meter to the water tank, and connect the cable of the first hydraulic sedimentation meter unit in the inclinometer tube to the automatic acquisition control terminal;

[0024] Step 5, underground pipeline settlement monitoring: the liquid level in the water tank remains unchanged on the reference basis, so that the value of the reference settlement meter remains unchanged. When settlement occurs at a local position of the underground pipeline, the hydraulic settlement meter unit at the corresponding position sinks with the pipeline. At this time, the liquid level of the liquid pipe in the hydraulic settlement meter drops, and the pressure difference of the hydraulic settlement meter changes. The cable in the hydraulic settlement meter transmits the monitoring data to the automatic acquisition control terminal using the cables in multiple hydraulic settlement meter units connected in sequence;

[0025] Step 6: After monitoring, recover the hydraulic sedimentation meter. The process is as follows:

[0026] Step 601: After the monitoring cycle is over, collect the automatic acquisition control terminal, remove the cable of the automatic acquisition control terminal, the air pipe, liquid pipe and cable of the reference sedimentation meter, untie the reserved wire rope, pull the wire rope from the other side, pull the last hydraulic sedimentation meter unit out of the inclinometer tube and remove the wire rope on the steel ring;

[0027] Step 602, press the clamp in the last hydraulic sedimentation meter unit to both sides, take out the hydraulic sedimentation meter from the fixed slide rail of the stabilizing device, remove the protective cover, remove and arrange the air pipe, liquid pipe and cable, and install the protective cover back on the corresponding hydraulic sedimentation meter;

[0028] Step 603, pull the next section of wire rope, and repeat steps 601 and 602 until all hydraulic sedimentation meter units are removed from the inclinometer casing;

[0029] Step 604: Clean and store the hydraulic sedimentation gauge and stabilization device, check whether the air pipe, liquid pipe, cable and wire rope are damaged, and do a good job of equipment storage and site cleaning.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] 1. The stabilizing device adopted in the present invention includes a righting guide device. The guide wheels on both sides of the righting guide device can ensure the smooth sliding of the entire device in the pipeline. When the measuring device is damaged, it can be replaced at any time. After the project is completed, the device can be quickly recovered and the friction between the device and the inner wall of the pipeline can be avoided. When the hydraulic sedimentation meter is connected to the righting guide device through a clamp, the thread on the inner side of the clamp can play a good fixing role and reduce the friction with the pipeline, so as to better protect it.

[0032] 2. The measuring device adopted in the present invention can realize the "linear" measurement of the settlement of underground pipelines, and can simultaneously monitor the hydraulic changes of hydraulic settlement meters at multiple positions of underground pipelines. The air pipes, liquid pipes and cables are connected to adjacent hydraulic settlement meters through interfaces to ensure that the hydraulic changes of adjacent hydraulic settlement meters can be monitored quickly and accurately, and then the settlement of underground pipelines can be inferred, helping on-site personnel to quickly analyze the working conditions.

[0033] 3. The method adopted by the present invention has simple steps and reasonable structural design. The first step is to install the inclinometer tube, then install the settlement unit, then install the settlement unit into the inclinometer tube and install the reference hydraulic settlement meter, then monitor the settlement data, and finally recover the hydraulic settlement meter.

[0034] In summary, the present invention is novel and reasonable in design, and the hydraulic sedimentation gauge is effectively installed inside the inclinometer tube to ensure coordinated deformation and integral force with the pipeline, and realize full-process automated monitoring of the linear deformation of the pipeline. Finally, after the measurement work is completed, the hydraulic sedimentation gauge can be taken out as a whole, recycled and reused, which is convenient for promotion and use.

[0035] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is an overall side view of the settlement measuring line of the present invention after installation;

[0037] Figure 2 It is a detailed drawing of the settlement measuring line of the present invention after installation is completed;

[0038] Figure 3This is a cross-sectional schematic diagram of the inclinometer tube support of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the stabilizing device of the present invention;

[0040] Figure 5 It is a structural schematic diagram of the straightening and guiding device of the present invention;

[0041] Figure 6 It is a schematic diagram of the clamp structure of the present invention;

[0042] Figure 7 It is a schematic diagram of the structure of the hydraulic sedimentation meter of the present invention;

[0043] Figure 8 This is a structural schematic diagram of the installation process of the hydraulic sedimentation meter unit of the present invention;

[0044] Fig. 9 This is a structural schematic diagram of the installation process of the hydraulic sedimentation meter unit of the present invention;

[0045] Fig.10 This is a schematic diagram of the structure of the hydraulic sedimentation meter unit of the present invention after installation;

[0046] Fig.11 It is a flowchart of the method of the present invention.

[0047] Description of reference numerals:

[0048] 1—ventilation pipe; 2—water tank; 3—reference sedimentation meter;

[0049] 4—reference base; 5—connecting pipeline; 5-1—trachea;

[0050] 5-2—Liquid pipe; 5-3—Cable; 6—Fixed slide rail;

[0051] 7—righting guide device; 7-1—guide wheel; 7-2—torsion spring;

[0052] 7-3—connecting rod; 8—clamp structure device; 8-1—spring;

[0053] 8-2—clamp; 9—reserved hole; 10—steel ring;

[0054] 11—Hydraulic sedimentation gauge; 11-1—Sedimentation gauge body; 11-2—Cable interface;

[0055] 11-3—air pipe interface; 11-4—liquid pipe interface; 11-5—protective cover;

[0056] 12—wire rope; 13—inclinometer tube mechanism; 13-1—inclinometer tube support;

[0057] 13-2—rubber pad; 13-3—inclinometer tube; 13-4—fixing screw;

[0058] 14—Pipeline; 15—Pipeline wrapped foundation; 16—Concrete cushion;

[0059] 17—Automatic acquisition control terminal. DETAILED DESCRIPTION

[0060] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention;

[0061] like Figures 1 to 10 As shown, a recyclable underground pipeline settlement monitoring device according to the present invention comprises an inclinometer tube mechanism 13 fixed on the top of a pipeline 14 and used to accommodate a plurality of hydraulic settlement meter units connected in sequence, one end of the plurality of hydraulic settlement meter units connected in sequence is connected to an automatic acquisition control terminal 17 arranged on the ground, and the other end of the plurality of hydraulic settlement meter units connected in sequence is connected to a reference foundation arranged on the ground;

[0062] The hydraulic sedimentation meter unit includes a stabilizing device for installing the hydraulic sedimentation meter 11, the stabilizing device includes a fixed slide rail 6 and two straightening guide devices 7 arranged at both ends of the fixed slide rail 6, the end of the fixed slide rail 6 is sleeved with a clamp structure device 8 connected to the straightening guide device 7 and used to limit the hydraulic sedimentation meter 11, the straightening guide device 7 is provided with reserved holes 9 on both sides along the length direction, and the outer end of the straightening guide device 7 is provided with a steel ring 10. The hydraulic sedimentation meter 11 includes a sedimentation meter body 11-1, and the two ends of the sedimentation meter body 11-1 are respectively provided with a cable interface 11-2, an air pipe interface 11-3, a liquid pipe interface 11-4 and a protective cover 11-5 of a hollow structure, and the steel rings 10 at the ends of two adjacent hydraulic sedimentation meter units are connected by a wire rope 12;

[0063] The reference foundation includes a reference base 4 and a water tank 2 and a reference settlement meter 3 both arranged on the reference base 4. A ventilation pipe 1 is arranged on the top of the water tank 2. A liquid pipe 5-2 is connected to the lower part of the water tank 2. The liquid pipe 5-2 connects the reference settlement meter 3 and multiple hydraulic settlement meters 11 in sequence. An air pipe 5-1 is connected to the upper part of the water tank 2. The air pipe 5-1 connects the reference settlement meter 3 and multiple hydraulic settlement meters 11 in sequence. The reference settlement meter 3 and the hydraulic settlement meter 11 at the corresponding end, two adjacent hydraulic settlement meters 11, and the automatic acquisition control terminal 17 and the hydraulic settlement meter 11 at the corresponding end are respectively connected through cables 5-3.

[0064] It should be noted that multiple hydraulic sedimentation meter units are distributed along the horizontal direction of the pipeline 14, and the multiple hydraulic sedimentation meter units have the same structure. Two adjacent hydraulic sedimentation meter units can be detachably connected; the hydraulic sedimentation meter 11 is located on the inner side of the fixed slide rail 6, and both ends are connected to the straightening guide device 7 through the clamp 8-2 and the spring 8-1, and is used to measure the displacement change of each measuring point. The air pipe interface 11-2, the liquid pipe interface 11-3 and the cable interface 11-4 are located at both ends of the hydraulic sedimentation meter 11, and are used for connecting the air pipe 5-1, the liquid pipe 5-2 and the cable 5-3 respectively. The protective cover 11-5 is located at the end of the hydraulic sedimentation meter 11, and is used to protect each interface from external influences. The hydraulic sedimentation meter is effectively installed inside the inclinometer pipe to ensure coordinated deformation and integral force with the pipeline, and realize full-process automated monitoring of pipeline linear deformation. Finally, after the measurement work is completed, the hydraulic sedimentation meter can be taken out as a whole and recycled for reuse.

[0065] In this embodiment, the inclinometer tube mechanism 13 includes an inclinometer tube 13-3 and an inclinometer tube bracket 13-1 arranged between the inclinometer tube 13-3 and the pipeline 14. The inclinometer tube bracket 13-1 is fixed to the top of the pipeline 14 by a fixing screw 13-4. A rubber pad 13-2 is arranged on the top of the inclinometer tube 13-3. The rubber pad 13-2 is located on the outside of the conduit 13-3 and is used to protect the conduit 13-3 and reduce friction.

[0066] In this embodiment, the straightening guide device 7 includes a shell and a mounting plate arranged in the middle of the shell, and a rotating shaft for mounting a connecting rod 7-3 is arranged on the mounting plate. Both ends of the connecting rod 7-3 are respectively provided with guide wheels 7-1 extending out of the shell and cooperating with the inner wall of the inclinometer tube 13-3, and torsion springs 7-2 for limiting are respectively arranged on the mounting plate at positions on both sides of the connecting rod 7-3.

[0067] In this embodiment, the clamp structure device 8 includes a clamp 8 - 2 sleeved on the fixed slide rail 6 , and a spring 8 - 1 is connected between the clamp 8 - 2 and the straightening guide device 7 .

[0068] In this embodiment, the pipeline 14 is disposed on an underground concrete cushion layer 16 , and a pipeline wrapping foundation 15 for wrapping the pipeline 14 is disposed on the concrete cushion layer 16 .

[0069] It should be noted that the guide wheels on both sides of the righting guide device in the stabilizing device can ensure the smooth sliding of the entire device in the pipeline. When the measuring device is damaged, it can be replaced at any time. After the project is completed, the device can be quickly recovered and the friction between the device and the inner wall of the pipeline can be avoided. When the hydraulic sedimentation meter is connected to the righting guide device through a clamp, the thread on the inside of the clamp can play a good fixing role and reduce the friction with the pipeline, so as to better protect it. It can realize the "linear" measurement of the settlement of underground pipelines, and can simultaneously monitor the hydraulic changes of hydraulic sedimentation meters at multiple positions of underground pipelines. The air pipe, liquid pipe and cable are connected to adjacent hydraulic sedimentation meters through interfaces to ensure that the hydraulic changes of adjacent hydraulic sedimentation meters can be monitored quickly and accurately, and then the settlement of the underground pipeline can be inferred, helping on-site personnel to quickly analyze the working conditions.

[0070] like Fig.11 A method for monitoring the settlement of a recoverable underground pipeline is shown, comprising the following steps:

[0071] Step 1: Install the inclinometer tube mechanism: fix the inclinometer tube mechanism 13 on the top of the pipeline 14, reserve the wire rope 12 in the inclinometer tube 13-3, seal both ends of the inclinometer tube 13-3, wait for the surveyor to record the coordinate data of both ends, and after the pipeline 14 is backfilled, dig both ends of the inclinometer tube 13-3 to expose at least 1m according to the measurement data, clean the loose soil, and keep the working surface clean;

[0072] Step 2: Install the hydraulic sedimentation meter unit. The process is as follows:

[0073] Step 201, remove the protective cover 11-5 of the hydraulic sedimentation meter unit, pass the air pipe 5-1, the liquid pipe 5-2 and the cable 5-3 through the reserved hole 9 and the clamp 8-2 of the stabilizing device, and then pass through the protective cover 11-5 to connect to the corresponding interface of the sedimentation meter body 11-1. After the connecting pipelines 5 on both sides of the hydraulic sedimentation meter 11 are connected, fix the protective cover 11-5, wherein the connecting pipeline 5 includes the air pipe 5-1, the liquid pipe 5-2 and the cable 5-3;

[0074] Step 202, press the clamp 8-2 of the stabilizing device toward both sides until the distance between the two clamps 8-2 is greater than the length of the hydraulic sedimentation meter 11, put the hydraulic sedimentation meter 11 into the fixed slide rail 6 and make the protective cover 11-5 at one end of the hydraulic sedimentation meter 11 fit with the clamp 8-2, slowly straighten the connecting pipeline 5 on both sides of the stabilizing device, and slowly loosen the clamp 8-2 to make the spring 8-1 rebound until the clamps 8-2 on both sides are all fitted with the protective cover 11-5;

[0075] Step 3: Install the hydraulic sedimentation meter unit into the inclinometer tube. The process is as follows:

[0076] Step 301, connect the installed first hydraulic sedimentation meter unit with the reserved steel wire rope 12, tie the cable 5-3 to the reserved steel wire rope 12, put it into the inclinometer tube, and fix the reserved steel wire rope 12 after pulling it in a certain distance, so that the air pipe 5-1, liquid pipe 5-2, cable 5-3 and steel ring 10 close to the inclinometer tube opening are exposed outside the inclinometer tube;

[0077] Step 302: Connect the air pipe 5-1, liquid pipe 5-2, and cable 5-3 exposed outside the inclinometer tube to the next hydraulic sedimentation meter unit according to step 301, and fix a section of steel wire rope 12 on the steel ring 10 between the two hydraulic sedimentation meter units, pull the reserved steel wire rope 12, and pull the connected next hydraulic sedimentation meter unit into the inclinometer tube for a distance, so that the air pipe 5-1, liquid pipe 5-2, cable 5-3 and steel ring 10 of the next hydraulic sedimentation meter unit are exposed outside the inclinometer tube and the reserved steel wire rope 12 is fixed;

[0078] Step 303, repeat step 302 until all hydraulic sedimentation meter units are pulled into the inclinometer tube, and connect the steel wire rope 12 to the steel ring 10 of the last hydraulic sedimentation meter unit and fix it;

[0079] Step 4, connect the automatic acquisition control terminal and the reference base: connect the air pipe 5-1, liquid pipe 5-2, and cable 5-3 of the last hydraulic sedimentation meter unit in the inclinometer tube to the reference sedimentation meter 3 on the reference base, connect the air pipe and liquid pipe of the reference sedimentation meter 3 to the water tank 2, and connect the cable 5-3 of the first hydraulic sedimentation meter unit in the inclinometer tube to the automatic acquisition control terminal 17;

[0080] Step 5, underground pipeline settlement monitoring: the liquid level in the water tank remains unchanged on the reference basis, so that the value of the reference settlement meter 3 remains unchanged. When settlement occurs at a local position of the underground pipeline, the hydraulic settlement meter unit at the corresponding position sinks with the pipeline. At this time, the liquid level of the liquid pipe 5-2 in the hydraulic settlement meter 11 drops, and the pressure difference of the hydraulic settlement meter 11 changes. The cable 5-3 in the hydraulic settlement meter 11 transmits the monitoring data to the automatic acquisition control terminal 17 using the cables in multiple hydraulic settlement meter units connected in sequence;

[0081] Step 6: After monitoring, recover the hydraulic sedimentation meter. The process is as follows:

[0082] Step 601: After the monitoring cycle is over, collect the automatic acquisition control terminal 17, remove the cable 5-3 of the automatic acquisition control terminal 17, the air pipe 5-1, the liquid pipe 5-2 and the cable 5-3 of the reference sedimentation meter 3, untie the reserved wire rope 12, pull the wire rope 12 from the other side, pull the last hydraulic sedimentation meter unit out of the inclinometer tube and remove the wire rope 12 on the steel ring 10;

[0083] Step 602: Press the clamp 8-2 in the last hydraulic sedimentation meter unit to both sides, take out the hydraulic sedimentation meter 11 from the fixed slide rail 6 of the stabilizing device, remove the protective cover 11-5, remove and arrange the air pipe 5-1, liquid pipe 5-2 and cable 5-3, and install the protective cover 11-5 back to the corresponding hydraulic sedimentation meter 11;

[0084] Step 603, pull the next section of wire rope 12, and repeat steps 601 and 602 until all hydraulic sedimentation meter units are removed from the inclinometer casing;

[0085] Step 604: clean and store the hydraulic sedimentation gauge 11 and the stabilizing device, check whether the air pipe 5-1, the liquid pipe 5-2, the cable 5-3 and the wire rope 12 are damaged, and do a good job of equipment storage and on-site cleaning.

[0086] When the present invention is used, the investment cost is low. With the help of the stabilizing device and the hydraulic sedimentation meter 11, the measuring time can be greatly shortened. With the help of the guide wheel 7-1, the device can be quickly replaced, disassembled and recycled, which saves time and labor, avoids errors caused by factors such as manual operation, improves the reliability of measurement data, is easy to install, and realizes "linear" monitoring of pipeline settlement with high monitoring accuracy.

[0087] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A recyclable underground pipeline settlement monitoring device, characterized in that: It comprises an inclinometer tube mechanism (13) fixed to the top of a pipeline (14) and used to accommodate a plurality of hydraulic sedimentation meter units connected in sequence, wherein one end of the plurality of hydraulic sedimentation meter units connected in sequence is connected to an automatic acquisition control terminal (17) arranged on the ground, and the other end of the plurality of hydraulic sedimentation meter units connected in sequence is connected to a reference foundation arranged on the ground; The hydraulic sedimentation meter unit comprises a stabilizing device for installing the hydraulic sedimentation meter (11), the stabilizing device comprises a fixed slide rail (6) and two straightening guide devices (7) arranged at both ends of the fixed slide rail (6), a clamp structure device (8) connected to the straightening guide device (7) and used for limiting the hydraulic sedimentation meter (11) is sleeved on the end of the fixed slide rail (6), the straightening guide device (7) is provided with a reserved hole (9) on both sides along the length direction, and a steel ring (10) is provided at the outer end of the straightening guide device (7), the hydraulic sedimentation meter (11) comprises a sedimentation meter body (11-1), and the two ends of the sedimentation meter body (11-1) are respectively provided with a cable interface (11-2), an air pipe interface (11-3), a liquid pipe interface (11-4) and a protective cover (11-5) of a hollow structure, and the steel rings (10) at the ends of two adjacent hydraulic sedimentation meter units are connected by a steel wire rope (12); The reference base comprises a reference base (4) and a water tank (2) and a reference settlement meter (3) both arranged on the reference base (4); a vent pipe (1) is arranged on the top of the water tank (2); a liquid pipe (5-2) is connected to the bottom of the water tank (2); the liquid pipe (5-2) sequentially connects the reference settlement meter (3) and a plurality of hydraulic settlement meters (11); an air pipe (5-1) is connected to the top of the water tank (2); the air pipe (5-1) sequentially connects the reference settlement meter (3) and a plurality of hydraulic settlement meters (11); the reference settlement meter (3) and the corresponding end hydraulic settlement meter (11), two adjacent hydraulic settlement meters (11), and the automatic acquisition control terminal (17) and the corresponding end hydraulic settlement meter (11) are respectively connected via cables (5-3); The straightening guide device (7) comprises a housing and a mounting plate arranged in the middle of the housing, the mounting plate being provided with a rotating shaft for mounting a connecting rod (7-3), guide wheels (7-1) extending out of the housing and cooperating with the inner wall of the inclinometer tube being respectively provided at both ends of the connecting rod (7-3), and torsion springs (7-2) for limiting are respectively provided at positions on both sides of the connecting rod (7-3).

2. A recyclable underground pipeline settlement monitoring device according to claim 1, characterized in that: The inclinometer tube mechanism (13) comprises an inclinometer tube (13-3) and an inclinometer tube bracket (13-1) arranged between the inclinometer tube (13-3) and the pipeline (14); the inclinometer tube bracket (13-1) is fixed to the top of the pipeline (14) by means of fixing screws (13-4); and a rubber pad (13-2) is arranged on the top of the inclinometer tube (13-3).

3. A recyclable underground pipeline settlement monitoring device according to claim 1, characterized in that: The clamp structure device (8) comprises a clamp (8-2) sleeved on the fixed slide rail (6), and a spring (8-1) is connected between the clamp (8-2) and the straightening guide device (7).

4. A recyclable underground pipeline settlement monitoring device according to claim 1, characterized in that: The pipeline (14) is arranged on an underground concrete cushion layer (16), and a pipeline wrapping foundation (15) for wrapping the pipeline (14) is arranged on the concrete cushion layer (16).

5. A method for monitoring the settlement of a recoverable underground pipeline using the device as claimed in claim 3, characterized in that: The method comprises the following steps: Step 1: Install the inclinometer tube mechanism: fix the inclinometer tube mechanism (13) on the top of the pipeline (14), reserve a steel wire rope (12) in the inclinometer tube (13-3), seal both ends of the inclinometer tube (13-3), wait for the surveyor to record the coordinate data of both ends, and after the pipeline (14) is backfilled, dig both ends of the inclinometer tube (13-3) to expose at least 1m according to the measurement data, clean up the loose soil, and keep the working surface clean; Step 2: Install the hydraulic sedimentation meter unit. The process is as follows: Step 201, remove the protective cover (11-5) of the hydraulic sedimentation meter unit, pass the air pipe (5-1), the liquid pipe (5-2) and the cable (5-3) through the reserved hole (9) and the clamp (8-2) of the stabilizing device, and then pass through the protective cover (11-5) to connect to the corresponding interface of the sedimentation meter body (11-1), and fix the protective cover (11-5) after the connecting pipelines (5) on both sides of the hydraulic sedimentation meter (11) are connected, wherein the connecting pipeline (5) includes the air pipe (5-1), the liquid pipe (5-2) and the cable (5-3); Step 202, press the clamp (8-2) of the stabilizing device toward both sides until the distance between the two clamps (8-2) is greater than the length of the hydraulic sedimentation meter (11), place the hydraulic sedimentation meter (11) into the fixed slide rail (6) and make the protective cover (11-5) at one end of the hydraulic sedimentation meter (11) fit with the clamp (8-2), slowly straighten the connecting pipeline (5) on both sides of the stabilizing device, and slowly loosen the clamp (8-2) to make the spring (8-1) rebound until the clamps (8-2) on both sides are all fitted with the protective cover (11-5); Step 3: Install the hydraulic sedimentation meter unit into the inclinometer tube. The process is as follows: Step 301, connect the installed first hydraulic sedimentation meter unit to the reserved steel wire rope (12), tie the cable (5-3) to the reserved steel wire rope (12), put it into the inclinometer tube, and fix the reserved steel wire rope (12) after pulling it in a certain distance, so that the air pipe (5-1), the liquid pipe (5-2), the cable (5-3) and the steel ring (10) close to the inclinometer tube opening are exposed outside the inclinometer tube; Step 302: Connect the air pipe (5-1), the liquid pipe (5-2), and the cable (5-3) exposed outside the inclinometer tube to the next hydraulic sedimentation meter unit according to step 301, and fix a section of steel wire rope (12) on the steel ring (10) between the two hydraulic sedimentation meter units, pull the reserved steel wire rope (12), and pull the connected next hydraulic sedimentation meter unit into the inclinometer tube for a distance, so that the air pipe (5-1), the liquid pipe (5-2), the cable (5-3), and the steel ring (10) of the next hydraulic sedimentation meter unit are exposed outside the inclinometer tube, and fix the reserved steel wire rope (12); Step 303, repeating step 302 until all the hydraulic sedimentation meter units are pulled into the inclinometer tube, and connecting the steel wire rope (12) to the steel ring (10) of the last hydraulic sedimentation meter unit and fixing it; Step 4: Connect the automatic acquisition control terminal and the reference base: connect the air pipe (5-1), liquid pipe (5-2), and cable (5-3) of the last hydraulic sedimentation meter unit in the inclinometer tube to the reference sedimentation meter (3) on the reference base, connect the air pipe and liquid pipe of the reference sedimentation meter (3) to the water tank (2), and connect the cable (5-3) of the first hydraulic sedimentation meter unit in the inclinometer tube to the automatic acquisition control terminal (17); Step 5, underground pipeline settlement monitoring: the liquid level in the water tank on the reference base remains unchanged, so that the value of the reference settlement meter (3) remains unchanged. When settlement occurs at a local position of the underground pipeline, the hydraulic settlement meter unit at the corresponding position follows the pipeline to sink. At this time, the liquid level of the liquid pipe (5-2) in the hydraulic settlement meter (11) drops, and the pressure difference of the hydraulic settlement meter (11) changes. The cable (5-3) in the hydraulic settlement meter (11) transmits the monitoring data to the automatic acquisition control terminal (17) using the cables in a plurality of hydraulic settlement meter units connected in sequence; Step 6: After monitoring, recover the hydraulic sedimentation meter. The process is as follows: Step 601: After the monitoring cycle is over, collect the automatic acquisition control terminal (17), remove the cable (5-3) of the automatic acquisition control terminal (17), the air pipe (5-1), the liquid pipe (5-2) and the cable (5-3) of the reference sedimentation meter (3), untie the reserved steel wire rope (12), pull the steel wire rope (12) from the other side, pull the last hydraulic sedimentation meter unit out of the inclinometer tube and remove the steel wire rope (12) on the steel ring (10); Step 602: Press the clamp (8-2) in the last hydraulic sedimentation meter unit toward both sides, remove the hydraulic sedimentation meter (11) from the fixed slide rail (6) of the stabilizing device, remove the protective cover (11-5), remove the air pipe (5-1), the liquid pipe (5-2) and the cable (5-3) and arrange them, and install the protective cover (11-5) back on the corresponding hydraulic sedimentation meter (11); Step 603, pull the next section of wire rope (12), and repeat steps 601 and 602 until all hydraulic sedimentation meter units are removed from the inclinometer casing; Step 604: clean and store the hydraulic sedimentation meter (11) and the stabilizing device, check whether the air pipe (5-1), the liquid pipe (5-2), the cable (5-3) and the wire rope (12) are damaged, and store the equipment and clean up the site.

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