承压水作用下回采巷道底板突水危险性评价研究  

Study on the Risk Assessment of Water Inrush from the Floor of Mining Roadway under the Action of Confined Water

作　　者：古君 张衡 Gu Jun;Zhang Heng(Zhumadian Wuguiqiao Coal Mine Group Co.,Ltd.,Zhumadian,Henan 463000)

机构地区：[1]驻马店市吴桂桥煤矿集团有限公司,河南驻马店463000

出　　处：《江西煤炭科技》2024年第1期125-128,131,共5页Jiangxi Coal Science & Technology

摘　　要：华北石炭二叠纪煤系是我国重要的含煤地层之一,煤系底部奥陶系及石炭系岩溶承压水严重威胁煤矿的生产安全。本文以吴桂桥煤矿受承压水威胁的回采巷道为背景,分别采用“岩梁法”和“岩柱法”开展了巷道底板突水危险性评价。“岩梁法”评价巷道底板含水层不具有底板承压突水风险。而“岩柱法”评价结果显示:L_(6)灰岩具有隔水层破坏型突水的危险性,L_(4)灰岩具有一定的隔水层破坏型突水的风险,奥陶系灰岩不具有底板隔水层破坏型突水的风险。在煤矿生产过程中,建议做好巷道底板承压突水的预防措施,保证安全生产。The Carboniferous Permian coal measures in North China are one of the important coal bearing strata in China.The Ordovician and Carboniferous karst confined water at the bottom of the coal measures seriously threaten the safety of coal production.Based on the background of a mining roadway threatened by confined water in a certain mine,the "rock beam method" and "rock pillar method" has been used to carry out the risk assessment of water inrush from the roadway floor in the paper.The "rock beam method" evaluates that the aquifer in the roadway floor does not have the risk of water inrush from the floor under pressure,while the evaluation results of the "rock pillar method" show that L_(6) limestone has the risk of water inrush caused by damage to the aquifers,L_(4) limestone has a certain risk of water inrush caused by damage to the aquifers,and Ordovician limestone does not have the risk of water inrush caused by damage to the floor aquifers.It is recommended to take preventive measures against pressure water inrush from the roadway floor to ensure safe production in the process of coal mine production.

关 键 词：巷道底板突水 隔水层破坏型 石炭二叠纪煤系 承压水 

分 类 号：TD823.83[矿业工程—煤矿开采] TD745.2[矿业工程—矿山开采]