摘要
为保障阳煤二矿15^(#)煤层采煤工作面的安全生产,以31301工作面为背景,采用理论计算分析其顶底板岩层破坏范围,确定顶底板涌水水源及其突水危险性,并通过数值模拟探究回采工作面回采影响下陷落柱围岩塑性破坏特征。结果表明:15^(#)煤层工作面顶板水源为K_(2)、K_(3)、K_(4)石灰岩含水层,顶板含水层不会威胁矿井的生产安全;采动影响下岩溶陷落柱围岩内出现渗漏区域,岩溶陷落柱防水保护煤柱宽度设计为65 m,能够保证工作面安全生产。
In order to ensure the safe production at 31301 coal mining face in No.15 coal seam of Yangquan No.2 Colliery,the author analyzes the strata failure range of the roof and floor by the theoretical calculation method to determine the water inrush water source and water inrush risk and explores the plastic failure characteristics of the surrounding rock of the subsidence column under the mining influence through numerical simulation,whose results show that the roof water source of No.15 coal seam mining face is K_(2)、K_(3)、K_(4)limestone aquifers without threat to the production safety of the mine;and there is a leakage area in the surrounding rock of the karst collapsed column under the mining influence with 65m-wide waterproof protective coal pillar to ensure the safe production of the working face.
作者
李骏
Li Jun(No.2 Colliery,New Energy Co.,Ltd.of Huayang New Material Technology Group.Yangquan,Shanxi 045008)
出处
《江西煤炭科技》
2023年第1期131-134,共4页
Jiangxi Coal Science & Technology
关键词
陷落柱
保护煤柱设计
奥灰承压水
带压开采
数值模拟
subsided column
design of protective coal pillar
Ordovician limestone confined water
mining under pressure
numerical simulation
