Evaluation Index And Monitoring of Goaf's Filling Effect

摘要

Overburden strata's movement and abutment pressure distribution's characteristics in filling mining was analyzed, and on this basis, filling effect's ground pressure monitoring index and evaluation index was put forward. Filling effect surrounding rock dynamic monitoring system, whose cores are GYY15Z mine drilling vector stress sensor, GUD650 mining intrinsically safe roof displacement sensor and GYD60 mining intrinsically safe stress sensor, was developed. Surrounding rock dynamic monitoring was done in Caozhuang Coal Mine 81006 working face with this system. Results show that the monitoring indexes were scientific and rational. Monitoring data could reflect filling effect scientifically, which could provide basis for filling effect's evaluation.