“三软”大采高综采面煤壁稳定性及其控制研究
High Coal Wall Stability and Its Control of Fully Mechanized Working Face in Three-soft Coal Seams
为有效控制"三软"大采高综采面煤壁稳定性，以淮北矿业集团许疃煤矿7219工作面为工程背景，实测了"三软"煤层大采高综采面煤壁片帮特征，建立了采场煤壁"楔形"滑动体稳定性分析的力学模型，分析了 "楔形"滑动体稳定性的关键影响因素。结果表明："三软"大采高综采面煤壁片帮以上半部片落的"楔形体"滑落形式为主，"楔形"滑动体稳定系数K与C、Ph、μ呈正比关系，与W0、θ呈反比关系. 通过提高支架初撑力、控制端面冒顶、加固煤壁、用好护帮板以及适当提高工作面推进速度等技术措施，7219工作面煤壁稳定性得到了有效控制。
In order to control effectively coal wall stability of fully mechanized working face in "three-soft" coal seams(FMWFTSCS), we measured the rib spalling characteristics at NO.7219 working face in Xutuan Coal Mine of Huaibei Mining Group, built the mechanical model for stability analysis of coal wall wedge sliding object(CWWSO), and analyzed the key effect factors for affecting CWWSO stability. The results show that the CWWSO sliding occurring in the upper part is the main rib spalling type of FMWFTSCS and that K, the stability coefficient of CWWSO, is proportional to C, Ph and μ, and inversely proportinal to W0 andθ. Through the increase of support setting load, control of end face roof fall, the strengthening of coal wall, good usage of guard plate, appropriate increase of mining face advancing speed, and other technical measures, the coal wall stability of the NO.7219 working face can be effectively controlled.
徐勐、马小涛、袁永、屠世浩
矿山压力、矿山支护矿山开采
“三软”煤层大采高综采煤壁稳定性“楔形”滑动体
three-soft coal seamsfully mechanized mining with great mining heightcoal wall stabilitywedge sliding object
徐勐,马小涛,袁永,屠世浩.“三软”大采高综采面煤壁稳定性及其控制研究[EB/OL].(2010-12-13)[2025-08-10].http://www.paper.edu.cn/releasepaper/content/201012-406.点此复制
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