CAJ | 학술논문

从工作面覆岩结构、矿压显现、支架阻力等方面对任楼煤矿7240(上)南工作面在回采过程中发生突水、溃砂的原因进行了分析，结果表明，含水层作用下覆岩结构发生破断失稳，原来属于裂隙带的岩层变为垮落带，导致冒落带异常发育并沟通含水层引起水砂溃出，支架阻力不足被压死加剧顶板结构失稳和冒落的程度。针对此类具有破断失稳危险的覆岩结构，提高支架阻力、避免结构失稳压架和顶板切冒是根本防治途径，同时需要辅助铺网、完善排水系统、提高支护质量、加强现场组织管理等手段。
종공작면복암결구、광압현현、지가조력등방면대임루매광7240(상)남공작면재회채과정중발생돌수、궤사적원인진행료분석，결과표명，함수층작용하복암결구발생파단실은，원래속우렬극대적암층변위과락대，도치모락대이상발육병구통함수층인기수사궤출，지가조력불족피압사가극정판결구실은화모락적정도。침대차류구유파단실은위험적복암결구，제고지가조력、피면결구실은압가화정판절모시근본방치도경，동시수요보조포망、완선배수계통、제고지호질량、가강현장조직관리등수단。
The reasons for water and sand inrush during stoping at 7 2 40 (upper)southern working face in Renlou Coal Mine were analyzed from the structure of overlying strata,strata be-havior and support resistance. The results showed that the structure of overlying strata ruptured and lost stability under the action of aquifer,and the original fractured zone of stratum turned in-to caving zone,leading to the abnormal development of caving zone and connection to aquifer,so that water and sand rushed in. Moreover,insufficient support resistance intensified the degree of structure instability and roof caving. For such strata structure in danger of fracturing and insta-bility,enhancing the support resistance and avoiding structural instability and roof collapsing are the fundamental ways to prevent the risk,combined with auxiliary webbing,improving the drainage system,enhancing supporting stability,and strengthening the organization manage-ment,etc.