中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
12期
58-61
,共4页
煤层顶板%导水裂缝带%发育高度%探测研究
煤層頂闆%導水裂縫帶%髮育高度%探測研究
매층정판%도수렬봉대%발육고도%탐측연구
coal roof%water conducted zone%development height%exploring research
煤层顶板导水裂缝带发育高度是煤矿设计部门在留设防、隔水煤柱时必须考虑的一个重要参数,对煤矿水体下采煤、顶板防治水具有重要意义。基于双阳煤矿水文地质补充勘探项目,在8#煤层采空区上方施工两个地面钻孔,采用地面钻孔钻井液漏失量实测法、钻孔电视摄像技术及传统经验公式法相结合的方法,综合确定8#煤层顶板导水裂缝带发育高度为43.7~45.7m,为地质条件相似矿区在合理确定开采上限、留设防(隔)水煤柱等问题提供方法和数据支持。
煤層頂闆導水裂縫帶髮育高度是煤礦設計部門在留設防、隔水煤柱時必鬚攷慮的一箇重要參數,對煤礦水體下採煤、頂闆防治水具有重要意義。基于雙暘煤礦水文地質補充勘探項目,在8#煤層採空區上方施工兩箇地麵鑽孔,採用地麵鑽孔鑽井液漏失量實測法、鑽孔電視攝像技術及傳統經驗公式法相結閤的方法,綜閤確定8#煤層頂闆導水裂縫帶髮育高度為43.7~45.7m,為地質條件相似礦區在閤理確定開採上限、留設防(隔)水煤柱等問題提供方法和數據支持。
매층정판도수렬봉대발육고도시매광설계부문재류설방、격수매주시필수고필적일개중요삼수,대매광수체하채매、정판방치수구유중요의의。기우쌍양매광수문지질보충감탐항목,재8#매층채공구상방시공량개지면찬공,채용지면찬공찬정액루실량실측법、찬공전시섭상기술급전통경험공식법상결합적방법,종합학정8#매층정판도수렬봉대발육고도위43.7~45.7m,위지질조건상사광구재합리학정개채상한、류설방(격)수매주등문제제공방법화수거지지。
The height of coal roof water conducted zone is an essential parameter should be considered during the barrier pillar design;and very important to coal mining under water-bodies, roof water control. In the Shuangyang coalmine hydrogeological supplementary exploration project, two surface boreholes drilled above the coal No.8 gob area, through drilling fluid leakage measurement, combined with borehole television imaging technology and traditional empirical formula method, comprehensively determined coal No. 8 roof wa?ter conducted zone height is 43.7~45.7m. Thus have provided methods and data support in issues of reasonable determination of upper mining limit, barrier pillar leaving etc. in geological condition similar mining areas.