摘要
前常铜铁矿体赋存矿岩是各种各样的松软岩层。自2008年在井下恢复生产以来,巷道掘进与支护一直困扰着矿山的正常生产。在松软岩层中掘进井巷工程应根据岩层性质和地压显现特点,采用合理的掘进破岩工艺,及时对围岩进行收敛变形监测,合理确定支护时间,才能确保松软岩层中的巷道稳定性。
Qianchang copper-iron ore body is hosted in weak strata. The roadway excavation and support problems had always influenced mine normal production since the resumption of production in 2008. The underground construction in the weak strata should select suitable drifting and rock breaking technology, monitor the convergent deformation of surrounding rock in time, and determine rational support time according to the strata characteristics and the ground pressure activities feature, which can ensure the roadway stability in weak strata.
出处
《中国矿山工程》
2013年第3期14-17,共4页
China Mine Engineering
关键词
松软岩层
巷道掘进
支护方法
weak strata
roadway excavation
support method
