采矿与安全工程学报2015，Vol.32Issue(6)：877-882,6.DOI:10.13545/j.cnki.jmse.2015.06.002
冲沟地貌下浅埋煤层开采矿压规律及顶板控制技术
Ground pressure rules and roof control technology for the longwall mining of shallow seam beneath the gully topography
摘要
Abstract
Gaotouyao Mine Area, located in the Shendong Coal Field, has typical topography features of developmental gully and large change for the slopes, thence many accidents, such as roof slice type caving and hydraulic support being iron-bound, are inclined to happen during the longwall mining of the shallow coal seams beneath the gully topography. According to the field conditions of the first longwall panel, Selian No. 1 Coal Mine, a "support-surrounding rock" relationship model has been established, and the reasonable support working resistance has been determined to be 11 000 kN in the back-gully mining period. The coal wall plastic zone development, roof pressure and roof deflection have been analyzed while the mining height are 4.0 m and 3.2 m respectively. And the strata pressure behavior de-gree presents a characteristic of "back-gully mining period > toward-gully mining period > bottom-gully mining period > normal mining period". The real-time monitoring results indicate that the max support working resistance and the roof weighting dynamic factor of the gully period are larger than these of the normal mining period. Many roof control measures, including enhancement mine pressure monitoring and forecasting, regional lower mining height and rapid advance speed, are implemented in the field, hence safe and efficient mining of shallow seam beneath the gully topography has been guaranteed.关键词
浅埋煤层/冲沟地貌/支架阻力/动载矿压/安全高效开采Key words
shallow coal seams/gully topography/support working resistance/dynamic mine pressure/safe and efficient mining分类
矿业与冶金引用本文复制引用
王方田,屠世浩,张艳伟,宋启,闫瑞龙,段超华..冲沟地貌下浅埋煤层开采矿压规律及顶板控制技术[J].采矿与安全工程学报,2015,32(6):877-882,6.基金项目
国家自然科学基金项目(51304202) （51304202）
江苏省自然科学基金项目(BK20130190) （BK20130190）
江苏省高校优势学科建设项目 （）
中央高校基本科研业务费专项资金项目(2014XT01) （2014XT01）
中国矿业大学青年科技基金项目(2013QNA28) （2013QNA28）
