作者：潘国营；马亚芬；赵东

第一作者单位：河南理工大学资源环境学院

摘要：为研究平顶山十矿下保护层开采是否达到释放己_16-17煤层瓦斯的目的以及是否会诱发底板灰岩承压水突水问题,基于FLAC^3D数值模拟软件,以十矿24130首采面为例,模拟采动条件下顶底板围岩的变形破坏过程。结果显示:开采下保护层所引起的顶板冒裂带发育高度能够达到己_16-17煤层,满足释放己组煤层瓦斯的裂隙要求;底板采动破坏深度最大为24.5 m,破坏裂隙会成为灰岩承压水进入矿井的导水通道,突水系数超过临界值。为确保24130首采面的安全生产,设计并实施了水害综合探查、疏水降压、完善排水系统、安全带压开采等综合防治水措施。该首采面成为平顶山矿区以开采下保护层释放己组煤层瓦斯和成功防治灰岩承压水的示范性工作面。

Abstract：In order to study whether the exploitation of the lower protective layer of Pingdingshan No. 10 coal mine achieves the purpose of releasing gas of cao seam F_16-17coal gas and whether it will induce the water bursting problem of confined water in limestone, take the first coal face 24130 in No. 10 coal mine as an example, the authors simulated the deformation and failure of surrounding rock of roof and floor through FLAC^3Dnumerical simulation software. The results show that the developmental height of the roof crack zone, which is caused by the exploitation of the lower protective layer, reaches the coal seam F_16-17floor and meets the requirement of releasing coal seam gas. The maximum failure depth of the floor is 24. 5 m, and the fracture becomes the water conduction channel through which confined water in limestone enters the mine. To ensure the safe production of coal face 24130, design and carry out comprehensive water disaster prevention methods, such as comprehensive investigations of water damage, and hydrophobic buck, improving the drainage system, mining safely under pressure and so on, the 24130 in No. 10 coal mine was a safe production one and became the exemplary through mining the lower protective layer to release coal seam gas and control confined water in limestone successfully.

基金：国家自然科学基金资助项目(40772153)；

关键词：平顶山十矿;FLAC^3D数值模拟;下保护层开采;水害防治;

DOI：10.16186/j.cnki.1673-9787.2017.06.003

分类号：TD745.2