Basic Research on Preventing Water Inrush and Sand Collapse from Roof in Shendong Mining Area -Detection of face overburden failure types
The main mining coal seam is Jurassic in Shendong mining area. As a result of changeable complexity of loose layer thickness of overlying strata, bedrock thickness, bury depth and large changes of hydrogeological conditions, face water inrush and sand collapse accidents occur many times. This mainly adopts drilling observation method to research overburden failure height. This research illustrates water flowing fractured zone of seven mine working faces. For the first time .results show that mine comprises overburden failure two zones distribution, normal overburden failure three zones distribution and overburden failure extra-high water flowing fractured zone distribution , in which, for extrahigh water flowing fractured zone type, fractureproduction ratio is 32 to 50. And its causes are discussed. Conclusions enrich overburden failure research. For coal mine safety, it has provided a new experience.
Shendong mining area Overburden failure Jurassic coal strata Drilling fluid method
WU Shiliang CHU Yanpeng QIAO Pengcong
Shandong University of Science and Technology Resources and Environmental Engineering Institute Qingdao Shandong China 266510
国际会议
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)
青岛
英文
61-68
2010-10-15（万方平台首次上网日期，不代表论文的发表时间）