摘要
运用适于分析岩层断裂和垮落的数值模拟软件UDEC建立了相应的模型,分析了综放沿空留巷围岩应力和位移的演变过程、围岩移动的特征,阐述了巷道和充填体上方顶煤的位移及其与上覆岩层破断之间的关系,为沿空留巷充填体参数选择提供科学依据.
In order to analyzing rock stratum rupture and collapse the numerical models were set up by numerical analyses software UDEC. By means of the models the stress and displacement evolution courses were analyzed around gob-side entry retaining in top-coal caving mining face. Surrounding rock movement feature and roof-coal displacement above retaining entry and filling belt were discussed. The relation between roof-coal displacement and overlying strata rupturing was also described. The results have important guidance to make rational use of retaining entry technology.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2004年第5期513-516,共4页
Journal of China University of Mining & Technology
基金
国家自然科学基金重点项目(59734090)
国家技术创新资助项目
关键词
放顶煤开采
沿空留巷
围岩移动
变形特征
top-coal caving mining
gob-side entry retaining
movement regularity
deformation feature
