摘要
针对煤矿采空区积水侧向水害风险,以伯方煤矿为工程背景,通过地质分析、数值模拟相结合的方法,揭示在采掘耦合扰动下引发的采空区顶板导水裂隙发育规律,提出“物探探测+注浆截堵+煤柱优化+疏放控压”的综合防控技术。研究表明:基于UDEC模拟伯方矿采空区侧向导水裂隙呈马鞍形分布,最大发育高度达121 m(22倍采高),侧向裂隙最大影响范围为53 m,三盘区停采线隔水煤柱宽度不足50 m时易形成贯通裂隙带;将煤柱宽度由40 m增至50 m,并实施注浆截堵后,三盘区涌水量降低85%,配合疏放控压措施,有效控制了采掘耦合扰动下采空区顶板侧向渗流水害。
Aimed at addressing the risk of lateral water hazards induced by goaf water accumulation in coal mines,this study takes Baifang Coal Mine as the engineering background.By integrating geological analysis and numerical simulation,it reveals the developmental law of water-conducting fissures in the goaf roof under coupling mining disturbances and proposes a comprehensive prevention and control technology system:"geophysical exploration+grouting interception+coal pillar optimization+dewatering and pressure control."The results indicate that,based on UDEC simulation,the lateral water-conducting fissures in the Baifang Coal Mine goaf exhibit a saddle-shaped distribution,with a maximum development height of 121 m(22 times the mining height)and a maximum lateral influence range of 53 m.When the width of the water-resisting coal pillar at the stoping line of the Third Panel is less than 50 m,a through fissure zone is prone to form.After increasing the coal pillar width from 40 m to 50 m and implementing grouting interception,the water inflow in the Third Panel decreased by 85%.Combined with dewatering and pressure control measures,the lateral seepage water hazards in the goaf roof under coupling mining disturbances were effectively controlled.
作者
王鹏
牛浩杰
许进鹏
WANG Peng;NIU Haojie;XU Jinpeng(Branch of Baifang Coal Mine,Shanxi Lanhua Technology Entrepreneurship Co.,Ltd.,Jincheng 048000,China;Liangsheng Taiyizhang Coal Industry Co.,Ltd.,Changzhi 046000,China;School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221000,China)
出处
《煤》
2026年第3期9-14,共6页
Coal
基金
国家自然科学基金资助项目(52274243)。
关键词
采空区积水
侧向渗流
裂隙发育
隔水煤柱
注浆截堵
goaf water accumulation
lateral seepage
fissure development
water-resisting coal pillar
grouting interception
