Development and Application of Down Three Zones Theory on Mining Safety Evaluation above Confined Water

摘要：

With twenty years research and production practice, the Down Three Zones theory has been playing an important role in the safety mining evaluation of coal seams above high-pressure aquifers and the prediction of the water inrush from coal seam floor. On the basis of former studies, the concept and origination, the development and application and the determination method of the Down Three Zones are summarized. The forming mechanism of the three zones under floor is further analyzed through theories of rock cracking mechanics; the definition of protecting zones in traditional three zones theory is newly divided and the Down Three Zones theory is systematically discussed. This paper aims to promote the intensive comprehension and extensive application of the theory, and thus to guide the mining activities above confined water.

关键词： Down Three Zones theory permeable failure depth in the coal seam floor the rise of confined water protection strata water-impedance coefficient water inrush from coal seam floor

作者: ZHANG Wenquan HU Yanhui REN Yanghui SUN Ming YU Zhipeng

作者单位: College of Resources and Environment Engneering,Shandong University of Science and Technology,Qingda College of Resources and Environment Engneering,Shandong University of Science and Technology,Qingda

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 242-246

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）