文档介绍：论文题目:陈家沟煤矿综放开采覆岩移动破坏规律研究
工程领域:矿业工程
硕士生:李星亮(签名)
指导教师:余学义(签名)
摘要
综放开采已经成为我国厚煤层开采广泛采用的主要采煤方法之一,但是这种采煤方
法由于一次采放高大引起覆岩破坏非常严重、导水裂隙带发育、地表沉陷剧烈、地表破
坏严重、地表裂缝发育;当地表裂缝与覆岩导水裂隙带沟通时将严重危及矿井安全生产,
同时开采塌陷破坏严重损害矿区生态环境。目前国内外对于综放开采覆岩破坏规律的研
究较少,可供借鉴和参考的实测数据和工程案例不多。因此,系统开展厚煤层综放开采
覆岩移动破坏规律,具有重要的理论意义和实用价值。
本文以华亭陈家沟煤矿北汭河下三采区特厚煤层综放开采为研究对象,分析了陈家
沟煤矿地质、采矿条件,开采煤层覆岩岩性结构、物理力学特征和含隔水性,以及控制
导水裂隙带分布规律的主要因素;采用井下仰孔注水测漏法探测 3201/3202 工作面开采
后导水裂隙带发育高度。探测结果表明,特厚煤层综放开采较其它采煤方法覆岩破坏程
度更为剧烈;在导水裂隙带上部存在较为发育的离层空间,裂采比最大为 ;在分析
井下探测研究成果的基础上,结合数值模拟计算,给出了导水裂隙带最大高度和分布形
态;结合三采区开采地表塌陷地裂缝深度探测成果,分析给出陈家沟煤矿北汭河下安全
开采防水煤(岩)柱厚度计算公式,并在三采区 3203 工作面进行试采;试采结果表明 3203
工作面开采不会导致北汭河水直接溃入井下,威胁井下安全。
研究成果为进一步深入研究特厚煤层综放开采覆岩移动破坏规律奠定了基础,对华
亭矿区水体下安全采煤具有一定指导意义。

关键词:综放开采;导水裂隙带;井下仰孔注水测漏法;覆岩结构;防水煤(岩)柱
研究类型:应用研究
Subject : Research on overburden movement and failure law of
full-mechanized top-caving mining of Chenjiagou Coal Mine
Specialty :Mining Engineering
Name :Li Xingliang (Signature)
Instructor:Yu Xueyi (Signature)
ABSTRACT
Fully-mechanized top-coal caving mining has e one of the widely used mining
method in thick coal seam in China, but due to the once mining and caving height is large, the
overburden failure caused by this mining method is very serious, the water flowing fractured
zone is of development, the surface subsidence is violent, the surface destruction is serious,
and the ground fissures are also of development; Further, when the ground fissures
communicate with water flowing fractured zone, it will seriously jeopardize mine safety in
production, and the collapse failure that caused by coal mining will seriously damage the
ecological environment of mining area as well. Currently there are less research on overburden
failure law of fully-mechanized top-coal caving mining at home and abroad, the measured data
and engineering cases for reference are also few. So, it is of great theoretical significance and
practical value to carry out systematic research on overbur