MONITORING SYSTEM FOR BEARING COMPRESSION RATE OF FILLING BODY IN COAL MINE GOAF AND MONITORING METHOD THEREOF

摘要

Provided is a monitoring system for bearing compression rate of filling body (5) in coal mine goaf and a monitoring method thereof, according to the position of the buried depth of a goaf filling body (5), a ground information processing system (1), a ground seismic focus control system (2) and a ground monitoring system (3) are arranged on the ground, wherein shock with certain strength is generated by the ground seismic focus control system (2) , and a signal is sent to the filling body (5); according to the difference of the elasticity of the filling body (5) under different compaction degrees, reflected waves (4) received by the ground monitoring system (3) are different, and finally, data is transmitted to the ground information processing system (1) to be processed. After the goaf is filled with the filling body (5), monitoring is started, with the change of time, the filling body (5) is gradually compacted, monitoring is conducted till the thickness of the filling body (5) is not changed any more, and finally, the bearing compression rate of the filling body (5) is calculated through a bearing compression rate formula.