Study on mining failure law of the weak and weathered composite roof in a thin bedrock working face
作者: Weifeng YangXiaohong Xia
作者单位: 1Institute of Mine Water Hazards Prevention and Controlling Technology, School of Resources and Geosciences, China University of Mining and Technology, Xuzhou, 221116, People’s Republic of China
2School of Civil and Architecture Engineering, East China University of Technology, Nanchang, 330013, People’s Republic of China
刊名: Journal of Geophysics and Engineering, 2018, Vol.15 (6)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1742-2140/aacedf
原始语种摘要: In this paper, the occurrence characteristics of the weak and weathered overburden, and hydrogeological features, are first analyzed in a research coal field. The overburden failure law and the development of ‘Three Zones’ are studied through physical model tests, and the rupture pattern and rock failure are analyzed in the conditions of mining under a weakly cemented roof with longwall top coal caving. When coal mining is 5 meters thick, the developmental height of the caving zone and the water flowing fractured zone is calculated as 21 meters and 58 meters, respectively. Based on the geological and mining conditions, through discrete element numerical simulation, the overburden failure law and characteristics of strata pressure behaviors were studied under the weak and weathered...
全文获取路径: IOP  (合作)

  • mining 矿业
  • working 开采
  • weathered 风化的
  • bedrock 基岩
  • studied 学习
  • conditions 条件式
  • overburden 表土
  • obvious 迷的
  • through 经过
  • feasibility 可行性