摘要
以阳泉三矿老采空区水害防治为工程背景,采用工程实测和数值模拟的方法,对采空区顶板导水裂隙侧向边界进行了预测研究。提出了以水平变形量判别顶板导水裂隙侧向边界的方法,基于K8101工作面相邻老采空区涌水工程实测数据得出的导水裂隙侧向边界值,确定了阳泉三矿顶板产生导水裂隙的临界水平变形判别指标εAB≥5 mm·m-1,利用此指标作为判据,预测了K8404工作面顶板导水裂隙侧向边界,据此制定了其相邻老采空区放水方案。
Based on the engineering background of old goaf water hazard control in the third coal mine of Yangquan,the lateral boundary prediction of water conducting fracture formed in roof is studied by use of engineering detection and numerical simulation.A method which uses the quantity of horizontal deformation as the criterion for water conducting fracture is proposed.According to the measured values of the lateral boundary of water conducting fracture which comes from the old goaf near the work face K8101,a criterion for water conducting fracture is determined,that is ε AB≥ 5 mm ·m-1.Based on the criterion,the lateral boundary of water conducting fracture for work face K8404 is predicted,and the water drainage plan for the nearby old goaf is proposed.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2010年第5期724-730,共7页
Chinese Journal of Geotechnical Engineering
基金
国家重点基础研究发展计划(937)项目(2007CB209400)
教育部"新世纪优秀人才支持计划"资助项目(NCET-05-0478)
关键词
老采空区
水害防治
导水裂隙侧向边界
导水裂隙判据
水平变形
old goaf
water hazard control
lateral boundary of water conducting fracture
criterion for water conducting fracture
horizontal deformation
