Roadway surrounding rock mass separation layer monitoring and early warning device

Abstract

The invention discloses a roadway surrounding rock mass separation layer monitoring and early warning device, and belongs to the technical field of roadway safety monitoring and early warning. The device is composed of a monitoring and early warning terminal, anchor heads, steel wire ropes, a friction bracket, a tension screw, a sleeve and a displacement sensor. The monitoring and early warning terminal comprises a microprocessor, a storage module, a control module, a communication module, an acousto-optical alarm whistle, an input port and an output port. The anchor heads connected with the steel wire ropes are fixed to the deep portion of a drilled hole; the measuring sleeve is fixed into the drilled hole through the friction bracket; the change condition of a roadway (or tunnel) surrounding rock mass separation layer is measured out through the displacement sensor; the monitoring and early warning terminal automatically completes sampling, analytical judgment, storing, transferring, alarming and other functions; when the displacement amount or the displacement speed of a monitoring point exceeds the early warning threshold value, alarming is automatically conducted; and the device can achieve parameter setting and measuring data output by being connected with a laptop. The important effect on shortening alarming time and decreasing casualties and property losses are achieved by adopting the device.

Description

[0001] Technical field: [0002] The invention relates to a roadway and tunnel surrounding rock body separation layer monitoring and early warning device, which belongs to the technical field of roadway safety monitoring and early warning. It specifically involves the automatic measurement and early warning of various roadways and tunnel roof subsidence or layer separation. [0003] Background technique: [0004] Roadway roof fall is the most common accident during underground construction, which poses a serious threat to normal production and workers' life safety. At present, for the monitoring of the separation layer inside the surrounding rock mass of mines and tunnels, the most commonly used mechanical separation device and electronic There are two types of ionographs. Although the mechanical abscission instrument has a simple structure and low cost, it has defects such as low measurement accuracy and limited range; the electronic monitor converts the displacement and defo...

AI Technical Summary

Problems solved by technology

Although the mechanical abscission instrument has a simple structure and low cost, it has defects such as low measurement accuracy and limited range; the electronic monitor converts the displacement and deformation caused by the abscission layer into electrical signals, and realizes the detection of the abscission layer in the surrounding rock mass. Quantitative monitoring, but there are defects such as its complex structure and high maintenance costs in the later period. If it is to be early-warned, the electrical signal must be transmitted to the ground computer for processing. The cost is very high and it is not easy to promote and use.

At present, neither of the two types of layer separation instruments can realize on-site alarm

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