Determining the dangerous area of water-inrush from coal seam floor based on micro-seismic monitoring

摘要：

　　The failure depth of the coal seam floor is one important consideration that must be kept in mind when mining is carried out above a confined aquifer.Determining the floor failure depth is the essential precondition for predicting the water-resisting ability of the floor.We have used a high-precision micro-seismic monitoring technique to overcome the limited amount of data available from field measurements.The failure depth of a coal seam floor, especially an inclined coal seam floor, may be more accurately estimated by monitoring the continuous, dynamic failure of the floor.The monitoring results indicate the failure depth of the coal seam floor near the work face conveyance roadway (the lower crossheading) is deeper and that the failure range is wider here compared to the coal seam floor near the return airway (the upper crossheading).The results of micro-seismic monitoring show that the dangerous area for water-inrush from the coal seam floor may be identified.This provides an important field measurement that helps ensure safe and highly efficient mining of the inclined coal seam above the confined aquifer at the Taoyuan coal mine.

关键词： inclined coal seam water-inrush from floor dangerous area micro-seismic monitoring

作者: SUN Jian

作者单位: School of Mining and Safety, Anhui University of Science and Technology, Huainan 232001, China

会议类型: 国际会议

会议名称: International Mining Conference 2014(2014国际采矿论坛)

会议地点: 安徽淮南

会议语种:英文

页码: 136-140

在线出版日期: 2014-09-19（万方平台首次上网日期，不代表论文的发表时间）