CN-122015746-A - Automatic monitoring method and system for deep horizontal displacement of soil body

CN122015746ACN 122015746 ACN122015746 ACN 122015746ACN-122015746-A

Abstract

The invention discloses an automatic monitoring method and a monitoring system for deep horizontal displacement of soil, wherein the method comprises the following steps of S1, drilling holes at a monitoring point, vertically arranging an inclinometer pipe, arranging holes on the pipe wall of the inclinometer pipe, S2, fixing a plurality of inclination sensors on the outer wall of a grouting pipe according to preset intervals, S3, lowering an integrated monitoring assembly into the inclinometer pipe, S4, injecting slurry into the grouting pipe, filling gaps between the grouting pipe and the inclinometer pipe and between the inclinometer pipe and surrounding soil, S5, installing an earth surface control system and an earth surface power supply system, S6, automatically and periodically collecting data of each inclination sensor through the earth surface control system, transmitting the data to a remote monitoring center in a wireless communication mode, and S7, processing, analyzing, displaying and early warning the received data in the remote monitoring center. The scheme can carry out long-term stable, automatic continuous, high-precision and high-reliability automatic monitoring on the horizontal displacement of the deep soil body.

Inventors

CAO XINWEN
LUO FEI

Assignees

成都金彦工程检测咨询有限公司

Dates

Publication Date: 20260512
Application Date: 20260205

Claims (8)

1. An automatic monitoring method for deep horizontal displacement of soil body is characterized by comprising the following steps: s1, drilling holes at a monitoring point, and vertically arranging an inclinometer pipe, wherein holes for slurry diffusion are formed in the pipe wall of the inclinometer pipe; S2, fixing a plurality of inclination angle sensors on the outer wall of the grouting pipe according to preset intervals, and forming an integrated monitoring assembly; S3, the integrated monitoring assembly is lowered into the inclinometer pipe, and the measuring direction of the inclination sensor is consistent with the guiding direction of the inclinometer pipe; S4, injecting slurry into the grouting pipe, filling gaps between the grouting pipe and the inclinometer pipe and between the inclinometer pipe and surrounding soil, and solidifying to form a composite structure which is formed by solidifying a plurality of inclination sensors, the grouting pipe, the inclinometer pipe and the surrounding soil into a whole; s5, installing a ground surface control system and a ground surface power supply system, and electrically connecting all the inclination angle sensors; s6, automatically and periodically acquiring data of each inclination angle sensor through a ground surface control system, and transmitting the data to a remote monitoring center in a wireless communication mode; And S7, processing, analyzing, displaying and early warning the received data in the remote monitoring center.
2. The automatic monitoring method for deep horizontal displacement of soil according to claim 1, wherein in step S1, holes on the wall of the inclinometer pipe are arranged in a quincuncial shape.
3. The automatic monitoring method of deep horizontal displacement of soil according to claim 1, wherein in step S2, the inclination sensor is a digital output MEMS inclination sensor, and the preset interval is 0.2-2 meters.
4. The automatic monitoring method of deep horizontal displacement of soil according to claim 1, wherein in step S4, the slurry is cement mortar or chemical grouting material, and the grouting pressure is low pressure slow grouting to ensure that the slurry is fully diffused without damaging the soil structure.
5. The method according to claim 1, wherein in step S6, the wireless communication mode is one or more of 4G, 5G, NB-IoT or LoRa.
6. The automatic monitoring method of deep horizontal displacement of soil according to claim 1, wherein in step S7, the monitoring center platform can generate a displacement-depth-dependent curve and a displacement-time-dependent curve, and is provided with a multi-level alarm mechanism of a displacement threshold and a change rate threshold.
7. A monitoring system employing the automatic monitoring method for deep horizontal displacement of soil body according to any one of claims 1 to 6, comprising: The composite structure buried in the soil body consists of a grouting pipe, a plurality of inclination sensors fixed on the outer wall of the grouting pipe, and an externally wrapped solidification slurry and an inclinometer pipe; The ground surface control system comprises an industrial personal computer or an embedded data acquisition unit, has the functions of data storage, local calculation and program control, and comprises a solar cell panel, a storage battery and a power management module, and is used for supplying power to the whole monitoring system; and the remote monitoring center is used for receiving, storing, analyzing and displaying data from the surface control system.
8. The monitoring system of claim 7, wherein the plurality of tilt sensor cables are integrated into a single bus cable and electrically connected to the control and industrial computer or the embedded data collector after being led to the surface along the grouting pipe.

Description

Automatic monitoring method and system for deep horizontal displacement of soil body Technical Field The invention relates to the technical field of soil body displacement monitoring, in particular to an automatic monitoring method and system for deep horizontal displacement of a soil body. Background With the rapid development of the construction of the infrastructure in China and the increasing frequency of engineering activities in mountainous areas and hilly areas, the problems of geotechnical engineering safety such as slope instability, foundation pit collapse, landslide disasters and the like are more remarkable. The deep horizontal displacement of the soil body is a key parameter reflecting the internal deformation and the steady state of the rock-soil body, and is used for accurately, continuously and timely monitoring the rock-soil body, and has important significance for early warning of disasters, engineering safety assessment and risk management and control. At present, the deep horizontal displacement monitoring means widely adopted in engineering is mainly a traditional movable inclinometer method. The method generally needs to pre-embed an inclinometer pipe with a guide groove in a soil layer, manually put an inclinometer probe into the pipe in sections at different depths during monitoring, measure the inclination angle of the inclinometer pipe point by point, and calculate to obtain the accumulated horizontal displacement values at different depths. Although this method is technically mature, many limitations and drawbacks are exposed in practical applications: 1. the manual operation efficiency is low, technicians are required to regularly go to the site to perform section-by-section measurement, the labor intensity is high, the time is long, and the operation risk in a severe environment or a dangerous area is high. 2. The data is discrete and the continuity is poor, the monitoring data is collected at discrete time points, continuous real-time monitoring in the true sense can not be realized, key deformation transient information can be omitted, and dynamic analysis and early warning are not facilitated. 3. The sensor has poor fixity and data is easy to drift, the traditional probe is movable, the measuring position has slight difference each time, and the coupling state of the probe and the pipe wall is easy to be affected by vibration, foreign matters in the pipe or abrasion of a guide groove, so that the measurement repeatability is poor, and the data has drift errors. 4. The system has low integration level and insufficient automation degree, most of the systems only have a data acquisition function, the power supply is dependent on-site commercial power, manual intervention is needed for data storage, processing and transmission, and an unattended remote intelligent monitoring network is difficult to construct. 5. The installation process and the sensor protection are insufficient, namely the coupling of the inclinometer pipe and the surrounding soil body is usually only dependent on backfill sand, the compactness is uneven, and the relative displacement is easy to generate under the soft soil or dynamic load environment, so that the monitoring system is invalid. The sensor itself lacks effective reinforcement and protection measures, and long-term stability is difficult to ensure under complex geological conditions. Therefore, a deep soil horizontal displacement monitoring method and system capable of realizing long-term stable, automatic continuous, high-precision and high-reliability monitoring are needed to meet the development requirements of intelligent and networking of modern geotechnical engineering safety monitoring. Disclosure of Invention Aiming at the defects in the prior art, the invention provides an automatic monitoring method and a monitoring system for deep horizontal displacement of a soil body, which solve the problems of low manual operation efficiency, discrete data, poor continuity and low reliability of the current soil body displacement monitoring. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: In a first aspect, an automatic monitoring method for deep horizontal displacement of soil is provided, which includes the following steps: The method comprises the steps of S1, drilling holes in a monitoring point, vertically arranging an inclinometer pipe, S2, fixing a plurality of inclination sensors on the outer wall of the grouting pipe according to preset intervals to form an integrated monitoring assembly, S3, lowering the integrated monitoring assembly into the inclinometer pipe, enabling the measuring direction of the inclination sensors to be consistent with the guiding direction of the inclinometer pipe, S4, injecting slurry into the grouting pipe, filling gaps between the grouting pipe and the inclinometer pipe and between the inclinometer pipe and surrounding soil, solidifying to form a composite struc