Overall roadway displacement and strain stress monitoring device and method

Abstract

The present invention discloses an overall roadway displacement and strain stress monitoring device. The overall roadway displacement and strain stress monitoring device is fixed on the surrounding rock of a roadway and comprises three or more detection lines; a steel wire in a rope displacement sensor in each detection line passes through a plurality of stress hanging rings and is terminated at a fixing device; and the rope displacement sensor is connected with a data acquisition device, a data conversion device, a data transmission device and a data processing device sequentially. The invention also provides a monitoring method. According to the monitoring method, initial data are measured; and the strain stress and pressure of different geological formations and engineering reinforcement surrounding rock or channels are calculated through using Hook's law and derivative laws. The overall roadway displacement and strain stress monitoring device has the advantages of simplicity, long service life, high adaptability and high generalization performance. According to the overall roadway displacement and strain stress monitoring device and method of the invention, monitored distances can be changed according to needs, so that the repeated installation of sensors can be avoided. The device is applicable to complex and harsh environments, can improve measuring precision, can measure the deformation condition of a section of the roadway or the whole roadway and can remotely and automatically detect the deformation, convergence and strain stress condition of surrounding rock.

Description

technical field [0001] The invention relates to a detection device and method, in particular to a monitoring device and method for overall roadway displacement and strain stress. Background technique [0002] In recent years, in the mining of various underground resources and underground public facilities in China, accidents caused by surrounding rock disasters have occurred frequently, and surrounding rock disasters have become an important factor affecting safe production and public facilities. In order to ensure the stability of the surrounding rock of the roadway and prevent accidents affecting personal safety due to surrounding rock accidents, existing mines generally adopt roadway excavation immediately after support, and tunnel lining immediately after excavation. The deformation and displacement of surrounding rock and tunnel support The monitoring of stress and stress has been paid more and more attention, and the requirements for the accuracy, reliability and onlin...

AI Technical Summary

Problems solved by technology

[0003] However, the existing mine roadway and tunnel surrounding rock monitoring technology is highly dependent on a certain special purpose or equipment, and basically belongs to the traditional safety monitoring technology.

For example, strain gauge force measuring metal rods, hydraulic metal rod dynamometers, digital display convergence gauges, etc. have different advantages, but the most critical problem is that the data monitored by these devices is only a single-purpose data.

At the same time, there are various shortcomings in these devices, the specific performances are: using manual intermittent observation and collection, the monitoring results lag behind and the data obtained have large errors; they are easily interfered by electromagnetic and underground humid environments, and the reliability is low; the monitoring efficiency is not high, and transmission Sensitive element life is short

[0004] In recent years, although there are online optical fiber strain monitoring and other automatic strain monitoring, they can only monitor the single-purpose data of the roadway and tunnel. Cross-sectional data, if you want to monitor a section of roadway or tunnel, you can only continuously install sensors, and you cannot get the convergence and deformation laws of a section or the entire roadway

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