摘要
针对国内许多矿区存在巨厚松散含水层的地质特点,分析了矿井提高开采上限的影响因素,分析了松散层水压的作用机理,提出了在较大水压条件下顶板保护层厚度的留设方法,为条件类似的矿井提高采煤上限提供了理论依据。
Extremely thick loose aquifer exists in many mines of China. Influence factors of heightening upper limit of mining were analyzed and action mechanism of hydraulic pressure of loose bed was analyzed as well. A design method of protection strata＇s height under larger hydraulic pressure was put forward, which provide reference for similar mines.
出处
《煤矿开采》
2008年第2期52-54,48,共4页
Coal Mining Technology
基金
国家科技支撑计划课题(2006BAB16B04)
国家重点基础研究发展计划资助课题(2007CB209405)
关键词
巨厚松散层
开采上限
导水裂缝带
安全煤柱
extremely thick loose bed
upper limit of mining
aquiferous crevice zone
safety coal pillar
