Method for monitoring pipeline laying by robot for measuring internal deformation of rockfill dam

Abstract

The present invention discloses a method for burying a robot monitoring pipeline for measuring the internal deformation of a rockfill dam, comprising: excavating monitoring trenches at several monitoring sections of the rockfill dam according to a preset pipeline arrangement drawing; laying a first sand layer at the bottom of the monitoring trench, and placing a flexible deformation monitoring pipeline in the monitoring trench; measuring the elevation of the flexible deformation monitoring pipeline, and adjusting the flexible deformation monitoring pipeline in real time according to the measured elevation data, so that the flexible deformation monitoring pipeline reaches the required slope ratio; and backfilling the monitoring trench. The method solves the problem that existing monitoring instruments and measurement technologies cannot accurately measure the internal deformation of super-high rockfill dams.

Description

Technical Field

[0001] The invention relates to the technical field of dam safety monitoring and measurement, and in particular to a method for burying a pipeline for monitoring internal deformation measurement of a rockfill dam using a robot. Background Art

[0002] Rockfill dam is an important type of dam. In recent years, my country has achieved remarkable results in the construction of rockfill dams. A number of landmark projects have been built, and efforts have been gradually made to tackle the problem of ultra-high rockfill dams.

[0003] As rockfill dams are gradually approaching the super-high dam body of 300m, the height and volume of rockfill dams are constantly increasing. The steel wire strength and the length of the connecting water pipes of traditional monitoring instruments such as tension-wire horizontal displacement meters and water-tube settlement meters have reached the limits of materials and technical processes, affecting the integrity and measurement accuracy of monitoring data.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a method for burying a pipeline for monitoring the internal deformation of a rockfill dam using a robot, thereby solving the problem that the existing monitoring instruments and measurement technologies cannot accurately measure the internal deformation of a super-high rockfill dam.

[0006] The technical solution of the present invention is as follows:

[0007] The method for monitoring the buried pipeline by a robot for measuring the internal deformation of a rockfill dam includes:

[0008] Excavate monitoring trenches at several monitoring sections of the rockfill dam according to the preset pipeline layout drawings;

[0009] Laying a first sand layer at the bottom of the monitoring trench and placing a flexible deformation monitoring pipe in the monitoring trench;

[0010] Measuring the elevation of the flexible deformation monitoring pipeline, and adjusting the flexible deformation monitoring pipeline in real time according to the measured elevation data, so that the flexible deformation monitoring pipeline reaches the required slope ratio;

[0011] The monitoring trench is backfilled.

[0012] Further, in the step of laying the first sand layer at the bottom of the monitoring trench, the flexible deformation monitoring pipe is welded into a U-shape or an arc shape;

[0013] In the step of excavating monitoring trenches at a plurality of monitoring sections of the rockfill dam according to a preset pipeline arrangement drawing, the monitoring trenches are excavated in a U-shape or an arc shape.

[0014] Furthermore, in the step of measuring the elevation of the flexible deformation monitoring pipeline, the flexible deformation monitoring pipeline requires a slope ratio of 1%.

[0015] Further, the step of backfilling the monitoring trench comprises:

[0016] backfilling the second sand layer and compacting the second sand layer;

[0017] backfilling the third sand layer and compacting the third sand layer;

[0018] The dam body filling material is backfilled and compacted.

[0019] Further, the step of backfilling the second sand layer specifically includes:

[0020] The distance between the upper surface of the second sand layer and the upper end point of the flexible deformation monitoring pipe is at least 30 cm.

[0021] Furthermore, before the step of excavating monitoring trenches at a plurality of monitoring sections of the rockfill dam according to the preset pipeline arrangement drawing, the following steps are included:

[0022] A plurality of monitoring sections of the rockfill dam are selected, wherein the monitoring sections are located at different filling elevations.

[0023] Further, the steps after backfilling the dam body with filling materials include:

[0024] A pipeline measuring robot is arranged in the flexible deformation monitoring pipeline, wherein the pipeline measuring robot moves back and forth in the flexible deformation monitoring pipeline;

[0025] Receive the internal deformation index data of the rockfill dam collected by the pipeline measurement robot.

[0026] Furthermore, after receiving the internal deformation index data of the rockfill dam collected by the pipeline measurement robot, the step further includes:

[0027] Monitor changes in deformation index data of the flexible deformation monitoring pipeline in each monitoring section.

[0028] Furthermore, in the step of monitoring changes in deformation index data of the flexible deformation monitoring pipe in each monitoring section, the deformation index data specifically includes: horizontal displacement and settlement.

[0029] Furthermore, after the step of monitoring the change of the deformation index data of the flexible deformation monitoring pipe in each monitoring section, the step further includes:

[0030] Observation rooms are arranged at both ends of the flexible deformation monitoring pipeline of each monitoring section;

[0031] The flexible deformation monitoring pipeline is extended into the observation room.

[0032] Beneficial effects of this solution: The method for burying a robot monitoring pipeline for measuring the internal deformation of a rockfill dam proposed in the present invention excavates monitoring trenches at several monitoring sections of the rockfill dam according to a preset pipeline layout drawing, lays a first sand layer at the bottom of the monitoring trench, places a flexible deformation monitoring pipeline in the monitoring trench, then measures the elevation of the flexible deformation monitoring pipeline, and adjusts the flexible deformation monitoring pipeline in real time according to the measured elevation data, so that the flexible deformation monitoring pipeline reaches the required slope ratio, and finally backfills the monitoring trench. The buried layered flexible deformation monitoring pipeline can effectively monitor the internal deformation of a super-high rockfill dam, solving the problem that existing monitoring instruments and measurement technologies cannot accurately measure the internal deformation of a super-high rockfill dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a flow chart of a method for monitoring pipeline burial by a robot for measuring internal deformation of a rockfill dam according to an embodiment of the present invention;

[0034] Figure 2 is a cross-sectional view of a rockfill dam in a method for monitoring pipeline burial using a robot for measuring internal deformation of a rockfill dam according to an embodiment of the present invention;

[0035] Figure 3 is a top view of a rockfill dam in which a pipeline burying method is monitored by a robot for measuring internal deformation of a rockfill dam according to an embodiment of the present invention;

[0036] Figure 4 Schematic diagram of the slope ratio of the flexible deformation monitoring pipeline in the method for burying the monitoring pipeline by the robot for measuring the internal deformation of the rockfill dam according to an embodiment of the present invention;

[0037] Figure 5 It is a cross-sectional view of excavation and backfilling of a monitoring trench in a method for burying a monitoring pipeline using a robot for measuring internal deformation of a rockfill dam according to an embodiment of the present invention.

[0038] Numbers in the figure: 10, flexible deformation monitoring pipeline; 20, observation room; 30, rockfill dam; 40, slope protection; 50, water retaining panel; 60, second sand layer; 61, first sand layer; 70, third sand layer; 80, dam body filling material; 90, traditional monitoring instrument. DETAILED DESCRIPTION

[0039] The present invention provides a method for monitoring the laying of pipelines by a robot for measuring the internal deformation of a rockfill dam. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] With the continuous increase in the height and volume of the dam, the steel wire strength and the length of the connecting water pipe of the existing traditional monitoring instruments such as the tension wire horizontal displacement meter and the water pipe settlement meter have reached the limit of materials and technical processes, affecting the integrity and measurement accuracy of the monitoring data. In order to solve the above problems, the present invention provides a method for burying a monitoring pipeline for measuring the internal deformation of a rockfill dam by a robot, specifically as follows: Figure 1 As shown in the figure, the method for burying a pipeline for monitoring the internal deformation of a rockfill dam by a robot specifically includes:

[0041] Step S100: excavating monitoring trenches at several monitoring sections of the rockfill dam according to a preset pipeline layout drawing.

[0042] In order to solve the problem that traditional measuring instruments and technologies in the prior art cannot accurately measure the internal deformation of a super-high rockfill dam, the present invention pre-buries a flexible deformation monitoring pipeline in the dam body to be monitored of the rockfill dam. The flexible pressure-resistant pipeline can deform along with the deformation of the rockfill dam. Therefore, the deformation of the rockfill dam can be obtained by measuring the deformation of the flexible deformation monitoring pipeline.

[0043] In specific implementation, the present invention selects each monitoring section where the flexible deformation monitoring pipeline needs to be arranged according to the actual conditions of the rockfill dam, and pre-designs the flexible deformation monitoring pipeline of each monitoring section and displays it in the form of a drawing. Then, according to the pipeline arrangement of the pre-designed flexible deformation monitoring pipeline drawing, a monitoring trench is excavated in each monitoring section of the rockfill dam, which can ensure that the excavated monitoring trench meets the design requirements and better ensures the accuracy of detection. At the same time, in order to ensure that the flexible deformation monitoring pipeline is arranged to meet the detection requirements of the rockfill dam, the elevation and slope ratio of the monitoring trench are strictly controlled.

[0044] Specifically, Figure 2 and Figure 3 As shown, in order to facilitate the simultaneous monitoring of multiple deformation indicators such as horizontal displacement and vertical settlement of the dam, the pipeline arrangement of the flexible deformation monitoring pipeline 10 is set to be U-shaped or arc-shaped. Correspondingly, in order to cooperate with the flexible deformation monitoring pipeline 10,

[0045] In the step of excavating monitoring trenches at several monitoring sections of the rockfill dam according to the preset pipeline arrangement drawings, the monitoring trenches are excavated in a U-shape or an arc shape according to the pipeline arrangement of the flexible deformation monitoring pipeline 10 drawings. At the same time, in addition to the flexible deformation monitoring pipeline, the U-shaped straight part or the two ends of the arc (relatively shorter than the straight part of the U-shape) of the monitoring trench can also be provided with traditional monitoring instruments 90 such as a tensioning wire displacement meter and a water pipe settlement meter. Since the above-mentioned traditional monitoring instruments occupy a certain space, the amount of earthwork excavated and backfilled can be reduced. In addition, the deformation index data measured by the above-mentioned traditional monitoring instruments can also be compared with the data measured by the pipeline measurement robot to evaluate the correlation between the deformation index data measured by the two measurement methods.

[0046] Specifically, the slope ratio of the buried flexible deformation monitoring pipeline is required to be 1%. In order to meet the above requirements, the slope ratio of the monitoring groove is also required to be 1%. Figure 4 As shown in the figure, the ratio of the vertical height h of the flexible deformation monitoring pipeline to the horizontal width L of the flexible deformation monitoring pipeline is called the slope ratio of the flexible deformation monitoring pipeline. Setting the slope ratio of the flexible deformation monitoring pipeline to 1% can prevent water accumulation and debris from falling into the flexible deformation monitoring pipeline, thereby ensuring that the pipeline measurement robot runs smoothly inside the flexible deformation monitoring pipeline.

[0047] Specifically, before step S100, the following steps are also included:

[0048] Step S010: selecting a plurality of monitoring sections of the rockfill dam, wherein the monitoring sections are located at different filling elevations.

[0049] In specific implementation, since the settlement of the rockfill dam body is mainly affected by factors such as water pressure, temperature and time, the settlement deformation of the rockfill dam has certain characteristics and laws. According to the deformation characteristics and laws of the rockfill dam, the present invention pre-selects the key monitoring sections of the rockfill dam, and uses the key monitoring sections as several monitoring sections of the rockfill dam, and the monitoring sections are at different filling elevations. The key monitoring sections are generally arranged at the maximum dam height, the joint section, the geological and topographic complex sections, and the structural and construction weak parts. A plurality of the flexible deformation monitoring pipes are arranged at different filling elevations, which can monitor the deformation inside the rockfill dam of each monitoring section, and better ensure the accuracy of the monitoring data. In addition, monitoring the key monitoring sections can ensure that the most problematic areas of the rockfill dam are detected, ensure the deformation inside the rockfill dam in a timely manner, and take measures in a timely manner to ensure the safety of the rockfill dam.

[0050] Furthermore, in step S200, a first sand layer is laid at the bottom of the monitoring trench, and a flexible deformation monitoring pipe is placed in the monitoring trench.

[0051] In specific implementation, the corresponding flexible deformation monitoring pipeline is arranged according to the U-shape or arc shape of the monitoring trench excavated in each monitoring section. In order to better protect the flexible deformation monitoring pipeline, the first sand layer 61 is first laid at the bottom of the excavated monitoring trench. The first sand layer 61 uses fine sand, and the flexible deformation monitoring pipeline is welded into a U-shape or an arc shape, and then the welded flexible deformation monitoring pipeline is suspended into the monitoring trench. In order to protect the flexible deformation monitoring pipeline from the invasion of sharp stones, fine sand is mainly used for buffering and protection. It is necessary to ensure that the thickness of the fine sand wrapped on the flexible deformation monitoring pipeline is at least 30 cm, and the thickness of the first sand layer 61 is at least 30 cm.

[0052] Further, in step S300, the elevation of the flexible deformation monitoring pipeline is measured, and the flexible deformation monitoring pipeline is adjusted in real time according to the measured elevation data, so that the flexible deformation monitoring pipeline reaches the required slope ratio;

[0053] During specific implementation, the present invention needs to use GPS to measure the elevation of the flexible deformation monitoring pipeline, and make real-time adjustments to the flexible deformation monitoring pipeline based on the measured elevation data, and use the elevation data of the same plane to determine the horizontal condition of the plane where the flexible deformation monitoring pipeline is located, thereby obtaining the inclination height of the flexible deformation monitoring pipeline, so that the flexible deformation monitoring pipeline reaches the required slope ratio of 1%.

[0054] Furthermore, in step S400, the monitoring trench is backfilled.

[0055] During specific implementation, after the slope ratio of the flexible deformation monitoring pipeline is adjusted to reach the requirement of 1%, the backfilling operation of the monitoring trench can be started, and the flexible deformation monitoring pipeline can be buried in the monitoring trench.

[0056] Furthermore, in step S410, a second sand layer is backfilled and compacted.

[0057] When implementing it, Figure 5As shown, first backfill the second sand layer 60, and compact the second sand layer 60, which can be specifically compacted by a roller. In order to ensure that the flexible deformation monitoring pipeline 10 is fully protected, the thickness of the backfill material follows the principle of fine inside and coarse outside, that is, the closer the backfill material is to the pipeline, the finer it is. The second sand layer 60 is made of the same material as the first sand layer 61, both of which are fine sand. Since the first sand layer and the second sand layer mainly play a buffering and protective role, they will protect the monitoring pipeline from the invasion of sharp stones. The flexible deformation monitoring pipeline 10 is surrounded by at least 30 cm of fine sand. Therefore, the thickness of the backfilled second sand layer 60 wrapped on the flexible deformation monitoring pipeline is at least 30 cm, that is, the distance between the upper surface of the second sand layer and the upper end point of the flexible deformation monitoring pipeline is at least 30 cm.

[0058] Furthermore, in step S420, the third sand layer is backfilled and compacted.

[0059] When implementing it, Figure 5 As shown, after the second sand layer 60 is compacted, the third sand layer 70 is backfilled, and then the third sand layer 70 is compacted, and specifically, a roller can be used for compaction. The third sand layer 70 is specifically a cushion material.

[0060] Furthermore, in step S430, the dam body filling material is backfilled and compacted.

[0061] When implementing it, Figure 5 As shown, after compacting the third sand layer 70, the dam body filling material 80 is backfilled, and the dam body filling material 80 can be compacted, specifically, by using a roller. After the above-mentioned monitoring pipeline burying steps are completed, the normal filling of the dam can be started. The above-mentioned burying method can ensure that the flexible deformation monitoring pipeline is fully protected, ensure that the pipeline measurement robot can obtain accurate deformation data, and ensure the safety of the rockfill dam.

[0062] Furthermore, in step S440, a pipeline measuring robot is arranged in the flexible deformation monitoring pipeline, wherein the pipeline measuring robot moves back and forth in the flexible deformation monitoring pipeline.

[0063] During specific implementation, the buried flexible deformation monitoring pipeline is like nerve fibers inside the rockfill dam, used to respond to the internal deformation of the rockfill dam. A pipeline measuring robot is arranged in the flexible deformation monitoring pipeline, and the flexible deformation monitoring pipeline provides an observation channel for the pipeline measuring robot, so that the pipeline measuring robot moves back and forth in the flexible deformation monitoring pipeline to collect deformation index data inside the rockfill dam.

[0064] Furthermore, in step S450, the internal deformation index data of the rockfill dam collected by the pipeline measurement robot is received.

[0065] In the specific implementation, the internal deformation index data of the rockfill dam collected by the pipeline measurement robot is received, and the pipeline robot performs multiple-period observation and comparison on the flexible deformation monitoring pipeline to obtain the internal deformation of the dam and ensure the safety of the rockfill dam. The specific deformation index data include: horizontal displacement, settlement and other deformation indexes.

[0066] Furthermore, in step S460, changes in deformation index data of the flexible deformation monitoring pipe in each monitoring section are monitored.

[0067] During specific implementation, the pipeline robot continuously performs reciprocating motion inside the flexible deformation monitoring pipeline to monitor changes in deformation index data of the flexible deformation monitoring pipeline in each monitoring section. The deformation index data specifically include: horizontal displacement and settlement. The change amplitude of each deformation index data is used to judge the deformation condition inside the rockfill dam.

[0068] Further, in step S470, observation rooms are provided at both ends of the flexible deformation monitoring pipeline of each monitoring section;

[0069] Further, in step S480, the flexible deformation monitoring pipeline is extended into the observation room.

[0070] When implementing it, Figure 2 and Figure 3 As shown, an observation room 20 is arranged on the side of the rockfill dam 30 away from the water retaining panel 50, that is, on the side of the slope protection 40 of the rockfill dam 30, that is, observation rooms 20 are arranged at both ends of the flexible deformation monitoring pipeline 10 on one side of each monitoring section slope protection 40, and the flexible deformation monitoring pipeline extends into the observation room. When the pipeline robot can move back and forth inside the flexible deformation monitoring pipeline 10 and the observation room 20, the setting of the observation room 20 is beneficial to the protection of the flexible deformation monitoring pipeline 10 and also facilitates the observation and management of the rockfill dam 30.

[0071] Furthermore, in step S490, the correlation between the deformation index data measured by the pipeline measuring robot and the traditional detection instrument is evaluated.

[0072] In a specific implementation, in addition to the flexible deformation monitoring pipeline, traditional monitoring instruments such as a tensioned wire displacement meter and a water pipe settlement meter may be arranged at the U-shaped straight portion or the two ends of the arc (which are shorter than the U-shaped straight portion) of the monitoring groove to collect deformation data inside the rockfill dam. The deformation index data measured by the traditional monitoring instrument may be compared with the deformation index data measured by the pipeline measuring robot to evaluate the correlation between the deformation index data measured by the pipeline measuring robot and the traditional detection instrument. At the same time, the accuracy of the measurement data of the pipeline measuring robot may be detected to prevent the pipeline measuring robot from malfunctioning.

[0073] In summary, the method for burying a robot monitoring pipeline for measuring the internal deformation of a rockfill dam proposed in the present invention is to excavate monitoring trenches at several monitoring sections of the rockfill dam according to a preset pipeline layout drawing, and lay a first sand layer at the bottom of the monitoring trench, place a flexible deformation monitoring pipeline in the monitoring trench, and then measure the elevation of the flexible deformation monitoring pipeline, and adjust the flexible deformation monitoring pipeline in real time according to the measured elevation data, so that the flexible deformation monitoring pipeline reaches the required slope ratio, and finally backfill the monitoring trench. The buried layered flexible deformation monitoring pipeline can effectively monitor the internal deformation of a super-high rockfill dam, solving the problem that existing monitoring instruments and measurement technologies cannot accurately measure the internal deformation of a super-high rockfill dam.

[0074] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for monitoring pipeline burial using a robot for measuring internal deformation of a rockfill dam, characterized in that: include: Selecting a plurality of monitoring sections of the rockfill dam, wherein the monitoring sections are located at different filling elevations; Excavating monitoring trenches at several monitoring sections of the rockfill dam according to a preset pipeline arrangement drawing, wherein the monitoring trenches are excavated in a U shape; Laying a first sand layer at the bottom of the monitoring trench, welding a flexible deformation monitoring pipe into a U shape, and placing the flexible deformation monitoring pipe in the monitoring trench; Measuring the elevation of the flexible deformation monitoring pipeline, and adjusting the flexible deformation monitoring pipeline in real time according to the measured elevation data, so that the flexible deformation monitoring pipeline reaches the required slope ratio; backfilling the monitoring trench; A pipeline measuring robot is arranged in the flexible deformation monitoring pipeline, wherein the pipeline measuring robot moves back and forth in the flexible deformation monitoring pipeline; receiving the internal deformation index data of the rockfill dam collected by the pipeline measurement robot; Monitoring changes in deformation index data of the flexible deformation monitoring pipeline in each monitoring section; The deformation index data specifically include: horizontal displacement and settlement; Observation rooms are arranged at both ends of the flexible deformation monitoring pipeline of each monitoring section; Extending the flexible deformation monitoring pipeline into the observation room; Evaluating the correlation between the deformation index data measured by the pipeline measuring robot and the traditional detection instrument; In the step of measuring the elevation of the flexible deformation monitoring pipeline, the slope ratio required by the flexible deformation monitoring pipeline is 1%, which can prevent water accumulation and debris from falling into the flexible deformation monitoring pipeline, and ensure that the pipeline measurement robot runs smoothly inside the flexible deformation monitoring pipeline; The slope ratio includes: the ratio of the vertical height h of the flexible deformation monitoring pipeline to the horizontal width L of the flexible deformation monitoring pipeline; The step of backfilling the monitoring trench comprises: backfilling the second sand layer and compacting the second sand layer; backfilling the third sand layer and compacting the third sand layer; The dam body filling material is backfilled and compacted.

2. The method for monitoring pipeline laying by a robot for measuring internal deformation of a rockfill dam according to claim 1, characterized in that: The step of backfilling the second sand layer specifically includes: The distance between the upper surface of the second sand layer and the upper end point of the flexible deformation monitoring pipe is at least 30 cm.

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