煤田地质与勘探Issue(6)：61-63,67,4.DOI:10.3969/j.issn.1001-1986.2013.06.015
逐阶段安全提高巨厚松散含水层下煤层开采上限研究
Safely improving by stage the upper limit of mining under extremely thick loose aquifer
摘要
Abstract
For maximum recovery of coal and safely reducing waterproof coal pillar in Huaibei Liudong coal mine, the upper limit of mining was improved by two steps: water-proof and sand control. In west No.3 mining district, firstly through research and analysis of the hydrogeological data of the aquifer and water-resisting clay layer at the bottom of the Quaternary system, the bottom aquifer of the Quaternary system in the western 31000 coalface was determined as weak watery, and the mining disturbance of water body was of level II. Then through numerical simulation, physical simulation comparison and analysis, the damage height of overlying rock after mining was studied and compared with the mine actual observation value, the development height of the water conducting fractured zone was confirmed as 41.3 meters;The paper put forward the safe and reasonable waterproof upper limit of mining, and 0.221 million tons of dull reserves were liberated. A good foundation has been set for further safe mining through sand control.关键词
开采上限/防水煤柱/导水裂缝带/巨厚松散层Key words
upper limit of mining/waterproof coal pillar/water conducting zone/extremely thick loose aquifer分类
矿业与冶金引用本文复制引用
王虎,岳建华,姜志海,孙红卫..逐阶段安全提高巨厚松散含水层下煤层开采上限研究[J].煤田地质与勘探,2013,(6):61-63,67,4.基金项目
中央高校基本科研业务费专项资金支持项目(2011QNB16)；“十二五”国家科技支撑计划课题(2013BAK06B01) （2011QNB16）
