Online rock burst monitoring system and method based on support resistance monitoring

Abstract

The invention provides an online rock burst monitoring system and method based on support resistance monitoring. The online rock burst monitoring system based on support resistance monitoring comprises a ground processing system located on the ground, a forepoling hydraulic support resistance force online monitoring device and a support locating system, wherein the forepoling hydraulic support resistance force online monitoring device and the support locating system are located underground and connected with an underground optical fiber ring network and an underground explosive-proof type intrinsic safety power source correspondingly. The forepoling hydraulic support resistance force online monitoring device comprises forepoling hydraulic supports, support pressure sensors installed on theforepoling hydraulic supports, data collectors installed on the side portion of a working face roadway and an underground substation. The support locating system comprises identification cards and card reading substations. The online rock burst monitoring system and method based on support resistance monitoring expand the types of rock burst monitoring and early-warning methods, by means of roadway forepoling hydraulic support resistance force online monitoring and achievement of automatic locating, a region of high stress and the change tendency of the region of the high stress are found, and then real-time monitoring, early warning and forecasting of the rock burst dangerous area and the danger degree are achieved.

Description

technical field [0001] The invention relates to the technical field of mining engineering, in particular to an online rock burst monitoring system and monitoring method based on support resistance monitoring. Background technique [0002] In recent years, my country's coal mine rock burst disasters have become more and more serious. Extensive research has been carried out on rock burst monitoring and early warning at home and abroad, and many beneficial results have been achieved in rock burst monitoring and early warning methods and equipment. In terms of rock burst risk monitoring and early warning methods and equipment, mainstream stress field monitoring includes: drilling cuttings method, online stress method, mine pressure observation method, elastic wave and shock wave CT method, etc.; mainstream vibration field monitoring includes: microseismic method, acoustic emission, electromagnetic radiation, etc. [0003] Practice has proved that due to the complexity of rock b...

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Problems solved by technology

[0004] In the process of coal mine rock burst prevention and control, it is necessary to arrange advanced hydraulic supports in the roadways on both sides of the coal mining face. The monitoring values ​​show a complete positive correlation. When the thickness of the coal seam is large and the uniaxial compressive strength of the coal body differs greatly, the first place where the stress of the coal body increases significantly and deforms is the part with the lower uniaxial compressive strength. The borehole stress gauge is buried in the coal body with high strength, and its monitoring effect is not sensitive enough compared with the support resistance of the advanced hydraulic support

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