Detection Water-conducting Fractured Zone in Overlying Strata Using DBBD

摘要：

An instrument for field detecting the extents of the water-conducting fractured zones was presented in this paper. The instrument, named Double end Blocking Borehole Device (DBBD), can measure the injected water loss rate along the borehole during borehole is blocked by double end and pumping water into. Comparing injected water loss rate between pre- and post-mining, the water-conducting fractured zone enhancement can be detected because the water loss rate will become large in the stratum where the water-conducting fracture developed. In this paper a case study for coal mining beneath a water-bearing alluvium was given. The overlying Cenozoic porous aquifer threats the mining of Taping Coal Mine, Shandong Province, China. The DBBD was used to detect overlying strata water-conducting fractured zone height. The results show that the DBBD provides a high efficient technique to determine the waterconducting fractured zone height.

关键词： Water-conducting fractured zone Overlying strata Coal mines Water inrush

作者: YU Shijian ZHANG Shengtang WANG Yuhe

作者单位: College of Natural Resources and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, China

会议类型: 国际会议

会议名称: 2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)

会议地点: 青岛

会议语种:英文

页码: 371-378

在线出版日期: 2010-10-15（万方平台首次上网日期，不代表论文的发表时间）