Application of electrical intelligent monitoring technology for water-conducting channel in coal face
In view of the problems in grouting effect evaluation in working face threatened by floor confined water and dynamic monitoring of the dynamic development in abnormal areas in working face during mining,the electrical intelligent monitoring technology was adopted to carry out grouting effect monitoring test and coal seam floor real-time monitoring during mining in the low resistance abnormal area of 61304 working face in Tangjiahui Coal Mine.By monitoring the change of rock resistivity,the dynamic diffusion trend of grouting fluid and the dynamic development process of mining-induced fissure were successfully captured,and the dynamic development of water-conducting channel was timely warned.The research shows that,the technology can clearly monitor the dynamic development of the water-conducting channel and distinguish whether the channel is connected to the aquifer.It is a new technology for monitoring the floor water inrush for working face mining under safe waterpressure of aquifer,providing technical guidance for mining with floor confined water and ensuring the safety of coal mine production.
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