摘要
通过对区域及矿井水文地质条件的分析研究,认为对矿井安全生产有影响的含水层为太原组四、五灰,太原组的下层岩浆岩,本溪组徐灰及奥陶系灰岩含水层;太原组四、五灰为富水性中等～强的含水层,并与下层岩浆岩穿插合并,相互联系,构成了开采10煤层的底板充水含水层组;徐灰下距奥灰的间距平均7.62m,奥灰水可以通过大小断层连通,在垂向上越流补给徐灰,存在底鼓水突水危险。运用大井法计算,在7、10煤层开采条件下,-415m水平以浅排水能力可按正常涌水量788m3/h,最大涌水量1103m3/h进行配备;以深可按正常涌水量1065m3/h,最大涌水量1491m3/h进行配备。根据该矿井水文地质条件,提出超前探水、疏水降压、合理留设防水煤柱等水患防治建议。
Through regional and coalmine hydrogeological condition analysis, considered that coalmine safety impacting aquifers have the Taiyuan Formation Nos.4 and 5 limestone, magmatic rock in the lower part of Taiyuan Formation, Benxi Formation Xujiazhuang limestone and Ordovieian limestone aquifers. Taiyuan Formation Nos.4 and S limestone aquifers are moderate to strong and penetrated, merged with magmatic rock in lower part of Taiyuan Formation, interrelated and composed No.10 coal floor water filling aquifer group. Average interval between Xujiazhuang limestone and underlying Ordovician limestone is 7.62m, Ordovician limestone water can vertically leakage recharge to Xujiazhuang limestone through major and minor faults and likely to cause floor heave water bursting hazard. Through ＂virtual large diameter well＂ method estimated preparing normal water discharge capacity can be 788m^3/h, maximum 1103m^3/h in the case to mine Nos.7 and 10 coal seams above -415m level; normal 1065m^3/h, maximum1491m^3/h under - 415m level. According to the coalmine hydrogeological condition, water hazard control advices of advanced water exploring, mine dewatering and depressing, rational safety pillar against water etc. put forward.
出处
《中国煤炭地质》
2009年第8期29-32,36,共5页
Coal Geology of China
关键词
水文地质条件
岩溶裂隙水
矿井涌水量预算
防治水措施
赵官镇矿井
hydrogeological condition
karstic fissure water
mine inflow estimation
water hazard control measures
Zhaoguanzhen coalmine
