摘要
不连沟煤矿位于准格尔煤田的北部。由于F6226工作面的部分煤层在奥灰水水头以下,需要进行带压开采,必须对潜在的顶板砂岩裂隙水和底板奥陶系灰岩岩溶裂隙水导水构造进行采前探查,并对导水构造实施治理。在探查工作中,利用瞬变电磁法在工作面顶板发现2处低阻异常,均为断裂影响形成岩石破碎,相对富水;经钻孔验证均未出水,预测在回采作业中只会产生局部淋水,不会出现大规模涌(突)水。音频电透视探测发现煤层底板中有4处低阻异常,槽波地震探测共探查出13条断裂和1处地质异常;对异常验证的25个钻孔注浆处理后,最大出水量为0.3 m^(3)/h,并未见到岩层的错乱等异常现象。评价认为,基本可以排除F6226工作面范围内煤层顶板砂岩水和底板奥灰水涌(突)水的可能性。
Buliangou Coal mine is located in the north Junger coalfield.A part of the coal seam at F6226 working face is bellow the Ordovician limestone water head thus some coal must be mined under pressure and pre-mining exploration and treatment on conduction structure of fissure water of the roof sandstone and karst fissure water of foot limestone implemented.Transient electromagnetic exploration detected 2 low resistance anomalies.Both of the anomaly is caused by fracture relatively abundant with water.Drilling verified the fracture without water flowing out.Prediction is made that in the mining operation local water leak will occur without large-scale water gushing(outburst).Audio fluoroscopy survey detected 4 low resistance anomalies and trough-wave seismic survey 13 faults and 1 geological anomaly in the foot limestone.25 holes were drilled to verify the anomaly and no rock dislocation encountered.After grouting the maximum water yield is 0.3 m^(3)/h.It is evaluated that the possibility of water gushing in the roof sandstone and foot limestone at working face F6226 can be basically ruled out.
作者
吕晓宇
王海东
刘平
王日光
常立东
LV Xiaoyu;WANG Haidong;LIU Ping;WANG Riguang;CHANG Lidong(Inner Mongolia Geological Exploration Institut of China Metallurgical Geology Bureau,Hohhot 010010,Inner Mongolia,China)
出处
《地质找矿论丛》
CAS
2024年第3期423-430,共8页
Contributions to Geology and Mineral Resources Research
关键词
不连沟煤矿
带压开采工作面
瞬变电磁法
槽波法
音频电透视法
矿山水害治理
危害性评价
内蒙古自治区
Buliangou Coal mine
Working face with pressure
Transient electromagnetic survey
Trough wave seismic survey
Audio frequency electrofluoroscopy
Mine water disaster control
Hazard assessment
Inner Mongolia
