三软煤层大采高综采围岩控制技术  

Soft Surrounding Rock Mass Control Technology on High Cut in Fully_mechanization Face

作　　者：吴士良[1] 

机构地区：[1]山东矿业学院

出　　处：《焦作工学院学报》1999年第3期185-188,共4页Journal of Jiaozuo Institute of Technology(Natural Science)

摘　　要：根据三软煤层围岩力学性质，研究了直接顶与老顶的构成和直接顶、老顶初次来压与周期来压步距以及顶板压力的变化规律，提出了加大初撑力及时护顶等控制顶板运动显现的措施以及防止煤壁片帮和支架插底的技术措施并付之实践，取得了三软煤层大采高控制围岩的预期效果．On the basis of understanding of mechanic properties of soft surrounding rock, the component parts of the soft immediate roof and main roof are studied, their breaking spans and pressure are also studied. The measures to control the manifestation of roof movement including the increasing supports, initial supporting face and protecting the soft immediate roof in time are also discussed. The other methods against high cut seam landlip and the support bottoms aserting into soft floor are also put forward. All these measures made a good effect in controlling the soft rock mass in fully_mechanization face.

关 键 词：三软煤层 采场 围岩控制 综采面 采煤 

分 类 号：TD325.4[矿业工程—矿井建设] TD823.97