采矿与安全工程学报2013，Vol.30Issue(1)：128-131,4.
基于岩层移动的下邻近层卸压瓦斯抽采及应用
Pressure-relief gas extraction of lower adjacent coal seam based on strata movement and its application
摘要
Abstract
In this paper, taking coal face 62114 in Xinzhuangzi mine, Huainan, as the engineering example, we analyzed the gas emission laws of the coal mining in the closed distance upper protective seam, and proposed the corresponding gas control measures. The results show that, 1) Under the mining disturbance of the upper protective seam, the underlying coal/rock strata can be divided into floor heave fracture zone and floor heave deformation zone in the mining influence area, and the lower protected seams under the floor heave fracture zone have the migration trends to the goaf of protective seam. 2) Y model ventilation can be used to solve gas accumulation and overflow in the upper corner of the face mining in the closed distance upper protective seam. 3) In principle, the spacing of penetrating boreholes in the lower protected seams should be less than or equal to 1 times of the seam spacing, which can just effectively prevent the pressure-relief gas of protected seams flowing into the working face of protective seam. Finally, the gas extraction results of coal face mining in the closed distance upper protective seam of Xinzhuangzi mine were analyzed.关键词
近距离煤层群/上保护层开采/瓦斯涌出/瓦斯治理Key words
closed distance coal seam group/ upper protective layer mining/ gas emission/ gas control分类
矿业与冶金引用本文复制引用
王海锋,方亮,程远平,王伟,周洪汝..基于岩层移动的下邻近层卸压瓦斯抽采及应用[J].采矿与安全工程学报,2013,30(1):128-131,4.基金项目
国家自然科学基金项目(50904068,51004106,51074160) （50904068,51004106,51074160）
教育部新世纪优秀人才支持计划项目 （）
