Underground pipeline settlement monitoring device and monitoring method

Abstract

The present invention discloses an underground pipeline settlement monitoring device and a monitoring method, wherein the underground pipeline settlement monitoring device comprises a vertically arranged and fixedly positioned control guide tube, the lower end of the control guide tube is open to guide the underground pipeline, the upper end of the control guide tube is open and flush with the ground surface or lower than the ground surface, and a settlement mark is arranged in the control guide tube, the lower part of the settlement mark contacts and cooperates with the underground pipeline, the settlement mark is mainly composed of a rod body and a cone body fixed at the lower end of the rod body, and the tip of the cone body forms a point contact with the underground pipeline. The settlement mark of the present invention forms a point contact with the underground pipeline, which can effectively feedback the settlement state of the underground pipeline relative to the surface contact, thereby ensuring the sensitivity of settlement monitoring and the accuracy of monitoring data.

Description

Technical Field

[0001] The present invention relates to the technical field of underground pipeline construction and maintenance, and in particular to an underground pipeline settlement monitoring device and a monitoring method. Background Art

[0002] Underground pipelines are concealed projects. Due to the complex and changeable geological conditions in my country, underground pipelines often encounter unfavorable geological environments such as soft soil layers during construction. If not handled properly, underground pipelines are prone to settlement after construction, causing dislocation, leakage and other defects at the pipe section joints. Under the action of groundwater pressure, the surrounding soil enters the pipeline through the staggered seams, causing clogging of the underground pipeline, affecting its use function and causing inconvenience to residents. What is more serious is that rain and sewage pipeline seepage will cause the outside of the pipe to be emptied. As time accumulates, it will cause the ground to crack and collapse, causing traffic jams, casualties, and seriously threatening the safety of nearby buildings (structures). In addition, when a third-party construction unit is constructing directly below the underground pipeline, it will cause the pipeline near the construction site to sink. It is necessary to monitor the settlement of the pipeline in real time and take protective measures in time to prevent the pipeline settlement from exceeding the allowable range.

[0003] Therefore, underground pipeline settlement monitoring plays an important role in pipeline construction and maintenance, and in ensuring the normal life and safety of life and property of people along the pipeline.

[0004] The existing underground pipeline settlement monitoring methods include excavation monitoring, settlement detection / column pile monitoring and other methods.

[0005] The excavation monitoring method is as follows: first dig a trench to expose the pipeline, and then place a ruler on the pipeline to measure the pipeline settlement data. However, due to the long observation time, the excavated pipeline is exposed for a long time. The pipeline is exposed for a long time, and can only be protected by covering it with canvas. The pipeline anti-corrosion layer is prone to aging or damage. At the same time, the lack of reference objects increases the difficulty of monitoring the settlement data, making the settlement data inaccurate. If the pipeline is covered with soil, only a small area observation pit with an observation point is left. The observation pit is prone to water accumulation, and the pipeline settlement data cannot be observed normally during the rainy season. At the same time, it still cannot guarantee that the service life of the pipeline anti-corrosion layer at the observation pit will not be reduced and the accuracy of the settlement data will not be guaranteed.

[0006] As shown in the utility model patent disclosure of announcement number CN204085502U, settlement detection / pile monitoring provides a gas pipeline settlement monitoring pile, including a control hose, a concrete block, steel bars and a gas pipeline. The control hose is semi-buried and fixed. The control hose is fixed to the center of the concrete block. The top of the concrete block is kept level with the ground. The steel bars are confined in the control hose. The control hose is provided with a scale. The bottom of the steel bar is fixed to the gas pipeline. A round iron sheet is provided on the top of the steel bar. A gas pipeline settlement monitoring pile is provided that can be observed in real time without exposing the gas pipeline to the air and has accurate observation data.

[0007] Or as shown in the invention patent disclosure of announcement number CN102692209A, it provides 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, two inspection wells are provided with detection marks, and a plurality 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, and 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. The advantages of the present invention are: it can intuitively, truly and continuously reflect the settlement amount of the monitored pipeline, avoid affecting the accuracy of pipeline settlement monitoring due to the bending or tilting of the settlement mark, is suitable for continuous monitoring of the settlement process of the pipeline according to different foundation conditions, and provides a guiding basis for future pipeline construction.

[0008] However, the main monitoring components in the above-mentioned monitoring method, such as rulers, steel bars, and settlement marks, have surface contact with the underground pipeline. When the underground pipeline undergoes horizontal displacement, the actual contact surface of the settlement mark is prone to displacement. At the same time, the vertical displacement of the settlement mark is easily restricted by the resistance of the filling material in the protective pipe, and cannot effectively feedback the settlement status and data of the underground pipeline. There are still problems with the sensitivity of settlement monitoring and the accuracy of monitoring data. Summary of the invention

[0009] The purpose of the present invention is to provide an underground pipeline settlement monitoring device and a monitoring method.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] The underground pipeline settlement monitoring device includes a vertically arranged and fixed reference guide tube, the interior of the reference guide tube is set as a cavity, the lower end of the reference guide tube is open to guide the underground pipeline, the upper end of the reference guide tube is open and is flush with or below the ground surface, and a settlement mark is arranged in the reference guide tube, the lower part of the settlement mark contacts and cooperates with the underground pipeline, the settlement mark mainly consists of a rod body and a cone body fixed at the lower end of the rod body, and the tip of the cone body forms a point contact with the underground pipeline.

[0012] The cone part of the sedimentation mark is made of high-density material.

[0013] The rod body of the sedimentation mark does not extend upward beyond the upper end opening of the control guide tube.

[0014] The lower end of the control guide pipe directly reaches the underground pipeline.

[0015] A guide limiting mechanism is provided between the rod body of the sedimentation mark and the control guide tube.

[0016] The guide limiting mechanism comprises a guide sleeve fixedly arranged at the central axis of the control guide tube, and the rod body of the settlement mark passes through the guide sleeve and is slidably matched with the guide sleeve.

[0017] The guide sleeve is fixedly connected to the control guide tube by a bracket which spreads outward in the radial direction thereof.

[0018] The control guide tube is composed of at least two tube sections fixedly connected to each other, and at least two guide sleeves are provided and are respectively fixedly arranged on the corresponding tube sections.

[0019] The present invention also provides an underground pipeline settlement monitoring method based on the underground pipeline settlement monitoring device, which is performed in the following steps:

[0020] (1) Multiple monitoring points are arranged along the length of the underground pipeline to be monitored;

[0021] (2) Arrange underground pipeline settlement monitoring devices at corresponding monitoring points; the arrangement of underground pipeline settlement monitoring devices is as follows: a reference guide pipe is vertically buried and fixed in the soil, and the lower end of the reference guide pipe is directly against the underground pipeline, the soil inside the reference guide pipe is emptied, and the tip of the cone of the settlement mark forms a point contact with the underground pipeline;

[0022] (3) Record and monitor the settlement data of the settlement mark.

[0023] The beneficial effects of the present invention are:

[0024] The settlement mark in the present invention is mainly composed of a rod body and a cone body fixed at the lower end of the rod body, and the tip of the cone body forms a point contact with the underground pipeline. Compared with the surface contact, the contact point is more accurate and stable under the action of the cone gravity. At the same time, the guide tube exists in the form of a cavity, which ensures the vertical sensitivity of the settlement mark, can effectively feedback the settlement state of the underground pipeline, and ensure the sensitivity of settlement monitoring and the accuracy of monitoring data.

[0025] The cone portion of the settlement mark in the present invention is a heavy cone, which ensures that the tip of the cone portion forms point contact with the underground pipeline while preventing the contact position from being misaligned due to the horizontal displacement of the pipeline.

[0026] In the present invention, a guide limit mechanism is further provided between the rod body of the settlement mark and the control guide tube, which facilitates the free settlement and sliding of the settlement mark in the control guide tube as the pipeline settles, and can effectively avoid settlement monitoring errors caused by planar displacement of the settlement mark rod body.

[0027] The lower end of the reference guide pipe in the present invention directly reaches the underground pipeline, and the soil inside the guide pipe is emptied, ensuring that the settlement mark can move freely in the guide pipe with the settlement displacement of the pipeline except for being restricted by the limiting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of an underground pipeline settlement monitoring device according to an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of the layout of the underground pipeline settlement monitoring device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] like Figure 1 As shown, the underground pipeline settlement monitoring device of the present invention comprises a reference guide pipe 1 which is arranged vertically to the underground pipeline 3 and fixed in position, the lower end of the reference guide pipe 1 is open to guide the underground pipeline 3, the interior of the reference guide pipe 3 is set as a cavity, the upper end of the reference guide pipe 1 is open and flush with the ground surface or lower than the ground surface, and a settlement mark 2 is arranged in the reference guide pipe 1, and the lower part of the settlement mark 2 is in contact with the underground pipeline 3. The settlement mark 2 is mainly composed of a rod body 21 and a heavy cone body 22 fixed at the lower end of the rod body 21, and the tip of the cone body 22 forms a point contact with the underground pipeline 3.

[0031] In this embodiment, the cone part of the settlement mark is a heavy cone made of high-density material (density is above 17 g / cm3), which ensures that the tip of the cone part forms a point contact with the underground pipeline without causing the contact position to be misaligned due to the horizontal displacement of the pipeline.

[0032] A guide limit mechanism is provided between the rod body 21 of the settlement mark 2 and the control guide tube 1, and the guide limit mechanism includes a guide sleeve 4 fixed at the central axis of the control guide tube 1. The rod body 21 of the settlement mark 2 passes through the guide sleeve 4 and slides with it, which facilitates the settlement and sliding of the settlement mark 2 in the control guide tube 1 and can effectively avoid the settlement monitoring error caused by the planar displacement of the settlement mark rod body.

[0033] In this embodiment, the guide sleeve 4 is fixedly connected to the control guide tube 1 by a bracket 5 that spreads outward along its radial direction, so as to achieve fixed installation of the guide sleeve 4.

[0034] In this embodiment, the control guide tube 1 is composed of two pipe sections fixedly connected to each other. Two guide sleeves 4 are provided and fixedly arranged on the two pipe sections respectively.

[0035] In this embodiment, the lower end of the reference guide pipe 1 directly reaches the underground pipeline 3, and the soil inside the reference guide pipe 1 is emptied, ensuring that the settlement mark 2 can move freely in the reference guide pipe 1 with the settlement displacement of the pipeline except for being restricted by the limiting mechanism.

[0036] The tip of the cone in the present invention forms a point contact with the underground pipeline. Compared with the surface contact, the contact point is more accurate and stable under the gravity of the cone. At the same time, the reference guide tube exists in the form of a cavity, which ensures the vertical sensitivity of the settlement mark, can effectively feedback the settlement state of the underground pipeline, and ensure the sensitivity of settlement monitoring and the accuracy of monitoring data.

[0037] like Figure 2 As shown, the present invention also discloses an underground pipeline settlement monitoring method based on the underground pipeline settlement monitoring device, which is performed in the following steps:

[0038] (1) Multiple monitoring points are arranged along the length of the underground pipeline to be monitored;

[0039] (2) Arrange underground pipeline settlement monitoring devices at corresponding monitoring points; the arrangement of underground pipeline settlement monitoring devices is as follows: a reference guide pipe is vertically buried and fixed in the soil, and the lower end of the reference guide pipe is directly against the underground pipeline, the soil inside the guide pipe is emptied, and the tip of the cone of the settlement mark forms a point contact with the underground pipeline;

[0040] (3) Record and monitor the settlement data of the settlement mark.

[0041] The underground pipeline settlement monitoring method disclosed in the present invention arranges multiple monitoring points along the length direction of the underground pipeline to be monitored, and its settlement mark is in point contact with the underground pipeline, so that the settlement status and data of the underground pipeline can be effectively fed back, ensuring the sensitivity of settlement monitoring and the accuracy of monitoring data.

[0042] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

[0043] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "up", "down", "left", "right", "middle" and "one" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

Claims

1. The underground pipeline settlement monitoring method is characterized by Follow these steps: (1) Multiple monitoring points are arranged along the length of the underground pipeline to be monitored; (2) Arrange underground pipeline settlement monitoring devices at corresponding monitoring points; The underground pipeline settlement monitoring device comprises a reference guide tube which is vertically arranged and fixed in position, the interior of the reference guide tube is set as a cavity, the lower end of the reference guide tube is open to guide the underground pipeline, the upper end of the reference guide tube is open and is flush with or below the ground surface, and a settlement mark is arranged in the reference guide tube, the lower part of the settlement mark contacts and cooperates with the underground pipeline, the settlement mark mainly consists of a rod body and a cone body fixed at the lower end of the rod body, and the tip of the cone body forms a point contact with the underground pipeline; A guide limiting mechanism is provided between the rod body of the sedimentation mark and the control guide tube; The guide limit mechanism comprises a guide sleeve fixedly arranged at the central axis of the reference guide tube, and the rod body of the settlement mark passes through the guide sleeve and slides with the guide sleeve; The guide sleeve is fixedly connected to the control guide tube by a bracket that spreads outward along its radial direction; The arrangement of the underground pipeline settlement monitoring device is as follows: the reference guide pipe is vertically buried and fixed in the soil, and the lower end of the reference guide pipe directly touches the underground pipeline, the soil inside the reference guide pipe is emptied, and the tip of the cone of the settlement mark forms a point contact with the underground pipeline; (3) Record and monitor the settlement data of the settlement mark.

2. The underground pipeline settlement monitoring method according to claim 1, characterized in that: The cone part of the sedimentation mark is made of high-density material.

3. The underground pipeline settlement monitoring method according to claim 1, characterized in that: The rod body of the sedimentation mark does not extend upward beyond the upper end opening of the control guide tube.

4. The underground pipeline settlement monitoring method according to claim 1, characterized in that: The lower end of the control guide pipe directly reaches the underground pipeline.

5. The underground pipeline settlement monitoring method according to claim 1, characterized in that: The control guide tube is composed of at least two tube sections fixedly connected to each other, and at least two guide sleeves are provided and are respectively fixedly arranged on the corresponding tube sections.

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