摘要
为了研究急倾斜特厚煤层分层开采时覆岩变形特征以及瓦斯的运移规律,采用UDEC数值模拟研究上覆岩层的裂隙场规律,分析了瓦斯的运移规律。结果表明:覆岩法向裂隙高度随着开采水平的深度增加而增加,随着连续几个水平的回采,法向裂隙会出现骤增。通过分析瓦斯的运移规律得出瓦斯聚集区域,采用高位钻孔和采空区埋管相结合的方式对瓦斯进行治理,在工程实践中取得了良好的效果。
In order to study the deformation characteristics of overburden and the regulation of gas migration during layer mining of steeply inclined thick coal seam, the fracture development characteristics of overlying strata are studied by UDEC numerical simulation and the law of gas migration is obtained.The results show that the normal fracture height increases with the increase of the exploitation level depth. With several working levels of recovery,the normal fissure will appear a sudden surge. By analyzing the law of gas migration,the gas concentration areas can be obtained. The method of combining high-order drilling with goaf buried pipe is adopted to manage gas,and good effects have been achieved in engineering practice.
作者
杜昌昂
孙路路
张延博
唐礼
司雷
DU Chang-ang;SUN Lu-lu;ZHANG Yan-bo;TANG Li;SI Lei(School of Mining and Safety Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Shaanxi Zhengtong Coal Co.,Ltd.,Xianyang 713600,China)
出处
《煤炭技术》
CAS
2018年第9期70-72,共3页
Coal Technology
基金
国家自然科学基金资助项目(51704187)
山东省自然科学基金(ZR2017BEE054)
关键词
急倾斜煤层
UDEC
裂隙发育
瓦斯运移
瓦斯治理
steeply inclined coal seam
UDEC
crack development
gas migration
gas control
作者简介
杜昌昂（1993-），山东济宁人，硕士研究生，研究方向：矿山灾害预测与防治．电子信：changangsdust@163．com；;通信作者：孙路路．电子信箱：sunsdust@126．com
