摘要
针对长平矿井Ⅲ2309工作面回风巷道在工作面回采期间顶底板及两帮变形严重的问题,通过井下现场调研和观测巷道的支护形式、围岩变形以及锚杆锚索破断情况,对巷道变形原因进行分析,结合巷道围岩特点,提出合理的支护建议及支护方案,并观测补强支护后围岩变形量,得出应超前工作面100m以上及时进行补强支护,且支护构件的强度要与锚索相匹配。
Aiming surrounding rock deformation of the wind tunnel during mining face extraction in changping mine Ⅲ 2309 mingface. Through investigation and observation the support form, surrounding rock deformation and bolt breaking situation, analysis reasons of surrounding rock deformation. This paper proposes the supporting advice and program, and observing the deformation of surrounding rock after supplement support. This paper educes that should supplement support above 100m lead mining face, and supporting member should be match with cable.
出处
《山东煤炭科技》
2016年第2期6-8,共3页
Shandong Coal Science and Technology
关键词
软岩
复用巷道
围岩变形
支护方案
soft rock reused roadway surrounding rock deformation supporting scheme
