摘要
传统放顶煤巷道布置时接续面巷道布置在上覆岩层未垮落区,巷道支承压力受埋深影响明显。认为错层位完全无煤柱巷道布置接续面巷道支承压力与埋深无关,基于关键层理论推导了接续面巷道支承压力。研究表明:错层位完全无煤柱巷道布置时巷道总处于垮落角之内,与巷道埋藏深度无关,在深部开采等高应力条件下,对释放巷道围岩应力与缓解冲击地压有独特的工程技术优势。
The roadway of the connection working face located in the uncaving overburden zone when adopted the conventional top coal caving mining. The mining depth impacted the roadway support pressure obviously. This paper instructed that the roadway support pressure of the connection working face has nothing to do with m depth in stagger arrangement. Based on the key strata theory,the roadway supporting pressure was deduced. The result show that： when the stagger arrangement roadways are located in the area of the caved overburden,they are in general under the protection of the caving angle. The roadway support pressure has nothing to do with mining depth.This method has the advantages of relieving the stress around the roadway and rock burst.
出处
《中州煤炭》
2015年第6期44-47,75,共5页
Zhongzhou Coal
基金
北京市大学生科学研究与创业行动计划项目(z20131101)
中央高校基本科研业务费专项资金资助项目(2011QZ06)
关键词
错层位巷道布置
支承压力
垮落区
冲击地压
埋深
roadway of connection working face
support pressure
caved overburden zone
rock burst
mining depth
