阳煤二矿岩溶陷落柱防水保护煤柱宽度设计  

Study on Waterproof Protective Coal Pillar Width of Karst Subsided Column in Yangquan No.2 Colliery

作　　者：李骏 Li Jun(No.2 Colliery,New Energy Co.,Ltd.of Huayang New Material Technology Group.Yangquan,Shanxi 045008)

机构地区：[1]山西华阳集团新能股份有限公司二矿,山西阳泉045008

出　　处：《江西煤炭科技》2023年第1期131-134,共4页Jiangxi Coal Science & Technology

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.

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 

分 类 号：TD822.3[矿业工程—煤矿开采]