摘要
超深井急倾斜薄矿脉开采地表岩移主要是由浅部矿体开采引起的,其岩移主要表现为空区覆岩顶板两端受未冒落顶与底部废石的支撑形成"厂"型弯曲和移动拱,并逐步向上扩展延伸至地表。通过采用三维数值模拟方法对吉林某金矿开采过程的模拟计算,得出超深井急倾斜薄矿脉开采的地表最大下沉量和地表岩移范围的变化规律。
The surface strata displacement of steeply inclined thin vein in ultra-deep well was mainly caused by the mining of shallow orebody.It primarily presented as bedding and movable arch in the form of"厂"shape at both ends of goaf roof,which was supported by no-caving roof and bottomed waste,and gradually extended upward to the surface.Finally,the maximum surface subsidence and the variation of surface strata displacement range were obtained based on the three-dimensional numerical simulation of the mining process for a gold mine in Jilin province.
引文
[1]袁杨帆,麻凤海.急倾斜煤层采动覆岩移动模式及其应用[M].北京:科学出版社,2007.
[2]付俊.金属矿山急倾斜薄矿体开采岩层移动及地表影响研究[D].长沙:长沙矿山研究院,2014.
[3]陶峰,陈俊智.急倾斜矿体持续开采对空区上覆岩层的影响[J].价值工程,2014(4):292-293.
[4]仁茂,马凤山,邓清海,等.急倾斜厚大金属矿山地下开挖岩移发生机理[J].中国地质灾害与防治学报,2008,19(1):62-66.
[5]煤炭工业局.建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规程[M].北京:煤炭工业出版社,2000.
[6]刘宝琛,廖国华.煤矿地表移动的基本规律[M].北京:中国工业出版社,1965.
[7]高召宁,石平五.急倾斜水平分段放顶煤开采岩移规律[J].西安科技学院学报,2001,21(4):316-318.
[8]吕泰和.急倾斜煤层开采引起断裂岩体移动规律[J].矿山测量,1981(3):24-25.