摘要
通过对陕煤集团红柳林煤矿地质条件的分析,采用经验估算、基于顶板分类、数值模拟等方法确定支架的支护强度,并提出中部支架与端头支架大梯度过渡的配套方式。现场使用结果表明,该支架的支护强度能够满足矿压要求,大梯度过渡的配套方式能够改善液压支架受力状态,减少工作面上下两端部过渡段顶部三角煤损失,提高资源的采出率。
By analyzing geological condition of Hongliulin Colliery of Shanmei Group, this paper obtained supporting intensity of pow- ered support on the basis of experience estimation, roof classification and numerical simulation and put forward large gradient transient match manner of mid-powered supports and end-support. Application showed that the supporting intensity could bear underground pres- sure, and that large gradient transient match manner could improve stress state of powered support, reduce roof triangular coal loss over support at the ends of face, and increase resource recovery.
出处
《煤矿开采》
北大核心
2013年第1期25-27,共3页
Coal Mining Technology
基金
中央国有资本经营预算重大技术创新及产业化资金资助项目:7m超大采高综采支护成套技术与装备研发(ZDJS-2009KSSJ-1)
天地科技股份有限公司开采设计事业部生产力转化基金资助项目(KC-SCLZH-2012-03)
关键词
液压支架
支护强度
数值模拟
大梯度过渡
采出率
powered support
supporting intensity
numerical simulation
large gradient transition
mining ratio
