摘要
露井联合开采条件下的采空区上覆岩层的稳定性一直是采矿工程技术中的关键问题。采用KB鲁佩涅依特理论估算法、结构力学梁理论计算法、普氏拱理论估算法与数值模拟法,对鄂尔多斯某矿进行分析计算,对不同采空区跨度及顶板厚度进行数值模拟,通过多种计算方法与实际生产状况结合,得出不同采空区跨度下合理的覆岩最小安全厚度值,为矿山设计合理采空区覆岩厚度提供了参考,对露井联合开采安全生产具有重要意义。
Stability of overlying strata at goaf under condition of open-underground combined mining had been a key issue in mining engineering technology.Practice situation of a mine in Ordos were analyzed and calculated by using KB LuPeinie theory estimation method,structural mechanics theory calculation method,Platts arch theory estimation method and numerical simulation method,numerical simulation was done on different goaf span and top plate thickness,though combine of several calculating methods and practice production situation,reasonable minimum safe thickness value of overlying strata at different goaf span was obtained,provided reference for reasonable goaf overlying strata thickness design of mine,had important guiding significance for safe production of open-underground combined mining.
出处
《现代矿业》
CAS
2012年第1期8-10,17,共4页
Modern Mining
关键词
露井联采
合理顶板厚度
采空区跨度
最大拉应力
Open-underground combined mining
Reasonable top plate thickness
Goaf span
Maximum tensile stress