waste edge chock

The method disposing abandoned stope is summarized,and it is proposed that the abandoned stope be disposed by roof cutting and pillar dilapidation.

提出用切顶与矿柱崩落法处理木架山采空区。

In this thesis, according to the condition of Mujia Hill, the method of roof cutting and ore pillar dilapidation is proposed.

本文根据木架山的具体条件，提出了应用切顶与矿柱崩落联合法进行木架山采空场处理。

Introduce a pressure characteristic of working face with the usage of hydraulic breaking-off prop.

介绍切顶支柱使用情况下的工作面矿压特性,分析切顶支柱对顶板管理的作用。

Through changing the face support fashion,the hard roof is managed by cutter top supports to increased cutter top resistance in Qitaihe Tiexi Coal Mine.

七台河铁西煤矿通过改变工作面支护方式,使用切顶支架增大切顶阻力来管理坚硬顶板,使坚硬顶板得到了较好的控制,杜绝了顶板事故的发生。

grade mining faces in Datong coal group,the application of roof*.

在分析大同煤矿集团公司高档采煤工作面存在问题的基础上 ,对切顶墩柱的应用做了研究 ,指出了可产生的经济效