浅埋煤层长壁工作面保水开采地表水位变化分析  

Analysis of the ground water level change of aquifer-protective mining in longwall coalface for shallow seam

作　　者：马立强[1] 孙海[1] 王飞[1] 李嘉明[1] 金志远[1] 张炜[1,2] 

机构地区：[1]中国矿业大学矿业工程学院,深部煤炭资源开采教育部重点实验室,江苏徐州221116 [2]中国矿业大学物联网研究中心,江苏徐州221116

出　　处：《采矿与安全工程学报》2014年第2期232-235,共4页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(50904063);教育部新世纪优秀人才支持计划项目(NCET-12-0957);江苏省高校"青蓝工程"项目;江苏高校优势学科建设工程项目;江苏省普通高校研究生科研创新计划项目(CXZZ13_0946);"本科教学工程"国家级大学生创新训练项目(201310290002)

摘　　要：为了解决保水与采煤这一矛盾,在论证了保水开采机理及其可行性后,神东矿区补连塔煤矿32202长壁工作面在正常回采过程中,根据浅埋煤层保水开采适用条件的初步分类研究成果,确定采高为5.3 m以下,并选用高强度液压支架和大功率高可靠性配套设备,保证工作面推进速度大于15 m/d。工作面回采后,地面水井水位观测显示,工作面中部10号水井水位,在采后25 d左右就渐趋稳定;靠近回风平巷的18号水井水位,在近1个月后才能够稳定。工作面回采稳定后,10号水井水位相对于地面升高0.66 m,18号水井水位相对于地面下降0.87 m,对第四系松散含水层影响较小,地表主要植被能够正常生长。工业性试验表明,以工作面快速推进为核心的长壁工作面保水开采技术在适宜地质条件下能够取得成功,为我国西部浅埋煤层矿区的生态环境建设和提高煤炭资源回收率提供了借鉴。In order to solve the contradiction between the protection of water resources and mining, according to the classified research result of aquifer-protective mining （APM） conditions in shallow coal seam during normal mining process of 32202 longwall coalface of Bulianta mine in Shendong mining area, the mining height is determined to be below 5.3 m and large power of hydraulic support and large power and high reliability equipment are selected to ensure that advance rate of coalface is greater than 15 m/d after demonstrating APM mechanism and feasibility. After coalface mined, the water level ob- servation of ground well shows that the water level of No. 10 observation well located in the middle of the coalface stabilizes gradually after about 25 days and relatively increases 0.66 m compared to the ground while the water level of No. 18 observation well near the tail entry stabilizes after about a month and relatively reduces 0.87 m compared to the ground. The Quaternary loosened aquifer is less affected

关 键 词：浅埋煤层 长壁工作面 保水开采 快速推进 

分 类 号：TD82[矿业工程—煤矿开采]