CAJ | 학술논문

煤层底板隔水岩层的结构、厚度是影响承压水上采煤安全性的重要因素。河南省局部地区缺失奥陶系，煤层开采受底板高承压寒武系石灰岩岩溶水突水威胁严重。以位于豫中矿区的马陵山煤矿为例，通过现场钻探查明了该矿煤层底板寒灰上段至少25 m厚度的含隔水层结构。以此为基础，评价了该层段的阻隔水能力，研究了基于GIS平台并利用寒灰上段的相对隔水性开展底板突水危险性评价的方法。应用研究成果，解放了马陵山矿约1340万t的煤炭资源储量，并实现了近400万t煤炭的安全采出；同时，成功完成了该矿-350 m水平上车场进入寒灰上段垂深55.5 m、320 m长巷道的施工。研究表明，将寒灰上段岩溶不发育段作为隔水层考虑更符合实际，并成功指导了马陵山矿的带压开采工作。
매층저판격수암층적결구、후도시영향승압수상채매안전성적중요인소。하남성국부지구결실오도계，매층개채수저판고승압한무계석회암암용수돌수위협엄중。이위우예중광구적마릉산매광위례，통과현장찬탐사명료해광매층저판한회상단지소25 m후도적함격수층결구。이차위기출，평개료해층단적조격수능력，연구료기우GIS평태병이용한회상단적상대격수성개전저판돌수위험성평개적방법。응용연구성과，해방료마릉산광약1340만t적매탄자원저량，병실현료근400만t매탄적안전채출；동시，성공완성료해광-350 m수평상차장진입한회상단수심55.5 m、320 m장항도적시공。연구표명，장한회상단암용불발육단작위격수층고필경부합실제，병성공지도료마릉산광적대압개채공작。
The structure and thickness of the floor aquifuge are important influencing factors for the safety mining above confined aquifer. Due to Ordovician strata missing in the certain areas of Henan Province, coalmines are often serious threatened by the floor Cambrian limestone Karst water inrush. The hydrogeological structure characteristics in the upper member with the thickness of at least 25 m of Cambrian limestone in Malingshan coalmine is detected in this paper, and then, the wa-ter-resisting-isolating capability of the upper Cambrian limestone is assessed. Subsequently, based on the GIS platform, the method of risk assessment for floor water inrush by using the relative impermea-bility of upper member of Cambrian limestone is studied. By adopting the research result, 13.4 million tons of coal resources in Malingshan coalmine are liberated and 4 million tons of coal resources are safety extracted and then, the shaft station at-350 m elevation is successful tunneled with the depth of 55.5 m and the length of 320 m into the upper member of Cambrian limestone. Owing to considering the existence of the relative aquifuge section locating in the upper member of Cambrian limestone, the result, which more tally with actual situation, has been successful applied in Malingshan coalmine for its coal mining practice above confined water with high pressure.