采矿与安全工程学报2017，Vol.34Issue(3)：444-451,8.DOI:10.13545/j.cnki.jmse.2017.03.007
浅埋薄基岩含水层下煤层开采突水溃砂相似模拟实验研究
Simulation experiment of water-sand inrush during the mining of the shallow coal seam under roof aquifer with thin bedrock
摘要
Abstract
Synthesizing the aquifer occurrence,coal mining conditions,and geological characteristics of rock mass structure mechanics,a simulation experiment device of water-sand inrush gas-liquid linkage was developed which includes simulation device of coal beating strata with roof aquifer,pneumatic-hydraulic interaction control device,and waterpressure and volume monitoring device.The design maximum injection pressure is 80 kPa,the precision monitoring of water pressure 1.0 kPa,and water level accuracy 1.0 rmm.Through the simulation experiment of water-sand inrush channel during the mining of the shallow coal seam under roof aquifer in Shendong Coalfield,the overlying strata fracture development and distribution characteristicsof water-sand inrush channel were analyzed.The results have shown that along the working face advancing direction,the water-inrush channels developed in three stages:the stage of gradual development,the stage of penetration linking channel formation,and the stage of water-sand inrush from the roof aquifer;the area of the overlying rock fracture and water-sand inrush can be divided into three sections:the zone of overburden fractures gradual development,the zone of water-sand intrusion,and the zone of water-sand-intrusion blocking.关键词
突水溃砂/气液联动/固流耦合Key words
water-sand inrush/pneumatic-hydraulic interaction/solid-fluid coupling分类
矿业与冶金引用本文复制引用
赵启峰,张农,韩昌良,郭玉,石建军,殷帅峰,潘东江..浅埋薄基岩含水层下煤层开采突水溃砂相似模拟实验研究[J].采矿与安全工程学报,2017,34(3):444-451,8.基金项目
河北省高等学校科学技术研究项目(Z2017045) （Z2017045）
河北省省级科技计划自筹项目(16274108) （16274108）
国家自然科学基金项目(51404251,51674119) （51404251,51674119）
