贵州省六枝特区平桥矿床的矿层层位对比方法及其工程意义

Comparison method of ore bed horizons of Pingqiao deposit in Liuzhi special area of Guizhou Province and its engineering significance

平桥矿床地处扬子准地台黔北台隆六盘水断陷区的威宁北西向构造变形区内,井田含矿地层为二叠系龙潭组,属于多矿层的复杂地区,根据矿床的沉积序列、沉积环境及矿物特性组合特征,各矿层的赋存状态及自身的特点,采用“标志层对比法”、“矿层层位及层间距对比法”、“矿层结构及其顶底板岩性组合特征对比法”、“测井曲线特征对比法”等多种方法。对比过程中,用各种方法互相验证和补充,使矿层对比结果更可靠,为资源量估算及后期矿井设计提供了可靠的地质依据。

Pingqiao deposit is located in the Weining NW trending structural deformation area in the longliupanshui fault depression area of the Yangtze paraplatform in the north of Guizhou.The ore bearing stratum of the mine field is the Permian Longtan Formation,which belongs to a complex area with multiple ore beds.According to the sedimentary sequence,sedimentary environment and mineral characteristics combination characteristics of the deposit,the occurrence state and its own characteristics of each ore bed,the"marker bed correlation method"is adopted"Comparison method of seam horizon and interval","comparison method of seam structure and its top and bottom slate combination characteristics","comparison method of logging curve characteristics"and other methods.In the process of comparison,various methods are used to verify and supplement each other,which makes the ore bed comparison results more reliable,and provides a reliable geological basis for resource estimation and later mine design.