壁式连采连充保水采煤条件下隔水层与地表变形特征  

Characteristics of aquiclude and surface deformation in continuous mining and filling with wall system for water conservation

作　　者：马立强 许玉军[2] 张东升 来兴平[1] 黄克军 都海龙 MA Liqiang;XU Yujun;ZHANG Dongsheng;LAI Xingping;HUANG Kejun;DU Hailong(Key Laboratory of Mine Geological Hazards Mechanism and Control,Xi'an,Shaanxi 710054,China;Key Laboratory of Deep Coal Resource Mining,Ministry of Education,School of Mines,China University of Mining & Technology,Xuzhou,Jiangsu 221116,China;Shaanxi Coal and Chemical Technology Institute Co Ltd, Xi'an,Shaanxi 710065,China;Technology Center,JinchengAnthracite Mining Group,Jincheng,Shanxi 048000,China)

机构地区：[1]矿山地质灾害成灾机理与防控重点实验室,陕西西安710054 [2]中国矿业大学深部煤炭资源开采教育部重点实验室矿业工程学院,江苏徐州221116 [3]陕西煤业化工技术研究院有限责任公司,陕西西安710065 [4]晋城煤业集团技术中心,山西晋城048000

出　　处：《采矿与安全工程学报》2019年第1期30-36,共7页Journal of Mining & Safety Engineering

基　　金：矿山地质灾害成灾机理与防控重点实验室开放课题项目(KF2017-02);国家重点基础研究发展计划(973)项目(2015CB251600);江苏高校优势学科建设工程项目

摘　　要：针对传统长壁式充填开采存在的充填与开采相互制约,有效充填空间不足等问题,提出了壁式连采连充保水采煤方法。首先将整个开采块段按照长壁系统设计运煤、运料及通风系统。此后,将块段内的采场巷道(宽巷)划分为若干开采阶段,在开采阶段内对采场巷道进行跳采式开采。每条采场巷道开采完毕,然后对其进行充填,直到开采并充填完阶段内的所有采场巷道,再进行下一阶段采场巷道的开采和充填,最终实现保水采煤。采用实验室物理模拟研究壁式连采连充"采充并行"保水采煤条件下的隔水层与地表变形特征,并进行了现场工业性试验。研究结果表明,所有阶段开采充填完毕后,隔水层的水平变形最大值小于2～3mm/m,隔水层仍具有隔水能力,可以实现保水采煤。在块段采出率超过90%的条件下,地表变形指标的最大值均小于国家规定的建筑物Ⅰ级损坏等级指标。In order to solve the issues in traditional longwall ?filling while mining? method, e.g. the shortage of filling space and the difficulty in coordination between coal mining and filling operation, the continuous mining and filling with wall system for water conservation were put forward. First, the whole mining section is divided into three systems of carrying coal, carrying materials and ventilation. Then all the roadway in mining block is divided into several mining stages, and interval mining is adopted in each mining stage. When each roadway is completed, it is filled immediately until all the roadway in the mining stage is mined and filled. The roadway in next stage will then be mined and filled, ultimately achieving the water-preserved mining. Meanwhile, the aquiclude and surface deformation in continuous mining and backfilling is studied by laboratory physical simulation and field tests. Results show that the maximum aquiclude deformation is less than 2~3 mm/m after the mining and filling at all stages. The aquiclude is still waterproof, therefore, the water-preserved mining is realized. When the recovery rate of block is more than 90%, the maximum value of surface deformation is less than the Grade I damage index.

关 键 词：壁式连采连充 采充并行 保水采煤 隔水层 地表 

分 类 号：TD74[矿业工程—矿井通风与安全]