摘要
以采空区上覆岩关键层理论、O型圈理论及采动裂隙椭抛带理论为基础,分析受工作面开采扰动后在采空区三维空间上构成的采空区上覆岩层中内外椭抛带之间形成的帽状采动断裂带的最佳高位钻孔抽采区域,并以主焦煤矿2308综放工作面的实际抽采设计、数据为辅助,佐证了该理论的正确性,并得出主焦煤矿2308综放工作面高位钻孔抽采的最佳水平位置应为距上隅角沿工作面倾向24~30 m的范围内。综合分析上覆岩动态冒落下,高位抽采的终孔位置选择与采空区漏风规律、采空区裂隙的发育程度及其关系,为同类型煤矿的安全生产提供借鉴。
Based on the key stratum theory of overlying strata,O-ring theory and mining fracture elliptic parabola zone theory,the optimal high-level borehole extraction area of cap shaped mining fracture zone formed between inner and outer elliptic parabola zones in overlying strata of goaf is analyzed.Taking No.2308 fully mechanized caving face in Zhujiao coal mine as an example,the best horizontal position of high-level borehole extraction should be within 24~30 m from the upper corner along the working face inclination.Based on the analysis of the dynamic caving law of overlying strata of the working face,the relationship between the layout of high-level extraction boreholes with the law of air leakage in goaf and fracture development law in goaf is studied,which can provide reference for the safety production of the coal mines with similar geological condition.
作者
贾佳
王奕博
杨志忠
刘帅
李文福
JIA Jia;WANG Yi-bo;YANG Zhi-zhong;LIU Shuai;LI Wen-fu(Anyang Zhujiao Coal Industry Co. ,Ltd. ,Anyang 455000,China)
出处
《陕西煤炭》
2020年第5期101-104,共4页
Shaanxi Coal
关键词
上覆岩
关键层
椭抛带
高位抽采
综放工作面
overburden
key stratum
elliptic parabola zone
high-level drainage
fully mechanized caving face
作者简介
贾佳(1986—),男,河南平顶山人,2015年毕业于河南理工大学通风与安全专业,助理工程师,现从事煤矿安全管理工作。
