摘要
由于西部浅埋矿区特殊的赋存条件,煤层开采严重威胁西部矿区脆弱的生态环境,以煤矿自有的煤矸石、周边的沙子,电厂的粉煤灰及水泥制作膏体材料,通过力学实验证明了充填体强度符合煤矿开采应用。通过数值模拟实验,验证了条带充填开采控制地表沉陷的效果,浅埋厚煤层条带充填开采只会在开采留设煤柱时形成垮落带,并且导水裂隙带高度发育不会到达含水岩层。
Because of the special conditions of the shallow buried mining area in the west of China,coal seam mining seriously threatens the fragile ecological environment of the western mining area. the coal gangue, the surrounding sand, the fly ash and cement of the power plant are used as paste materials. Through mechanical experiments, the strength of backfill is proved to be in accordance with the application of coal mining, and the effect of strip filling mining on controlling surface subsidence is verified by numerical simulation experiment. Strip filling mining in shallow and thick coal seam will only form caving zone when coal pillar is set up, and the height of water-conducting fissure zone will not reach the water-bearing strata.
作者
王冠一
赵文静
张步初
张承冉
WANG Guan-yi;ZHAO Wen-jing;ZHANG Bu-chu;ZHANG Cheng-ran(College of Mining and Safety Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Jiangzhuang Mine,Shandong Energy Zaokuang Mining Group,Tengzhou 277500,China)
出处
《煤炭技术》
CAS
2019年第2期35-37,共3页
Coal Technology
关键词
浅埋厚煤层
条带充填开采
原位强度
数值模拟
shallow thick coal seam
strip filling mining
in-situ strength
numerical simulation
