Mechanism and control technology of the rib spalling of rise mining with great large dip angle

摘要：

　　In view of the phenomena that coal rib is be susceptible to spalling for rise mining with great mining height, analytic method is applied to reveal mechanism of the rib spalling of rise mining with great mining height and great large dip angle.The rib spalling laws with dip angle and mining height increasing is studied by numerical simulation.Results show chances of shear failure and furthermore rib spalling get up with dip angle increasing.Under certain geological conditions,rib spalling is serious when the dip angle is over 10°.According to the rib spalling of rise mining in Duanwang mine, the chemical grouting and reinforced technology is applied to improve the stability of coal and rock mass.And the roof accidents due to the rib spalling are eliminated.So the technology ensures the successful mining operation of the working face.

关键词： great mining height rise mining rib spalling numerical simulation bolt and grouting reinforcement

作者: LI Ying-ming XU Ji-cheng LIU Shuai JIA Xi-ge

作者单位: Heilongjiang Ground Pressure & Gas Control in Deep Mining Key Lab, Heilongjiang University of Scienc Key Laboratory of Safety and High-efficiency Coal Mining ,Ministry of Education, Anhui University of

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: 90-96

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）