CAJ | 학술논문

为有效预防采空区上覆关键层运动诱发工作面矿震事故的发生，根据现场实测数据并通过有限元数值模拟软件对采空区形成过程中上覆关键层破裂区范围的大小进行了模拟。得出鲍店煤矿103上04工作面影响矿震震级大小的根源为赋存在煤层底板上方100~220 m范围内致密坚固细砂岩、中砂岩组成的关键层的破裂失稳，破裂区面积大小对应震级大小。依据103上04工作面实际震级发生情况提出针对性的解危措施：对工作面后方悬空顶板进行深孔大直径爆破技术改善岩体应力状态，释放关键层积聚过多的弹性能，能够有效防止关键层的整体运动，减小矿震事故发生的强度和频次。
위유효예방채공구상복관건층운동유발공작면광진사고적발생，근거현장실측수거병통과유한원수치모의연건대채공구형성과정중상복관건층파렬구범위적대소진행료모의。득출포점매광103상04공작면영향광진진급대소적근원위부존재매층저판상방100~220 m범위내치밀견고세사암、중사암조성적관건층적파렬실은，파렬구면적대소대응진급대소。의거103상04공작면실제진급발생정황제출침대성적해위조시：대공작면후방현공정판진행심공대직경폭파기술개선암체응력상태，석방관건층적취과다적탄성능，능구유효방지관건층적정체운동，감소광진사고발생적강도화빈차。
In order to effectively prevent mine earthquake induced by key strata movement in the gob,and according to actual data in the field,the size of fracture region in overlying key strata of the gob is simulated with application of the finite el-ement numerical simulation software. Accordingly,the cause for influencing the earthquake magnitude of 103up04 working face in Baodian coal mine is:fracture and instability of key strata which constituted by fine standstone and middle standstone that are hard or dense at the coal seam floor about 100~220 m,and the size of the fracture region corresponds to the earthquake magnitude. Based on the occurrence of actual magnitude in the 103up04 coal face,the preventing measures are put forward:the deep hole large diameter blasting at the behind of coal face is applied to improve the stress state of rock mass and a large a-mount of elastic energy accumulated in key strata is released. Thid method can effectively stop the whole movement of key stra-ta,thus,reduce the occurrence frequency of disaster and the intensity of the mine earthquake.