论文部分内容阅读
大理石矿床开采时,由于裂隙的存在,破坏了矿休的完整性,降低了荒料率。因此,对裂隙作充分的调查研究,是合理选择最佳开采方案、确定荒料块度和荒料率、制订矿山采剥技术计划、提高矿山经济效益等的依据。本文拟就宜兴白云山大理石矿的实践,对此作些初步探讨。一裂隙成因、分类和特征(一)区域地质构造与裂隙形成白云山矿位于湖州—无锡中断凸张渚旋卷构造内,祝陵—石路墩和东霞埠—大庙两大断裂之间。由于受区域地质构造强烈影响,本区地层产生了一系列小褶皱和小扭曲,矿床裂隙发育,并被四条成矿后断层切割。矿床裂隙属次生型,以因强烈区域地质构造而成的构造裂隙为主;因外生地质作用而形成的非构造裂隙次之。非构造裂隙多集聚在地表以下10米左右的矿体表层和浅部,
Marble mining, due to the presence of cracks, destroyed the integrity of mine break, reducing the rate of blocks. Therefore, a thorough investigation and study of fissures is the basis for judging the optimal mining scheme rationally, determining the blockiness and block rate of blocks, formulating the technical plan for mining and stripping mines, and improving the economic benefits of mines. This paper plans to Yixing Baiyun Mountain marble mine practice, to make some preliminary discussion. Genesis, classification and characteristics of a rift (a) Regional geological structure and fissure formation The Baiyunshan Mine is located within the Huzhang-Wuxi discontinuity of the Changzhu scrolls in Zhuzhou-Zhuzhuang-Shiludun Pier and the Dongxia Bu- . Due to the strong influence of the regional geological structure, a series of small folds and small twists were formed in the strata of this area. The fissures of the deposit developed and were cut by four ore-forming faults. The fissures in the orebodies belong to the secondary type, dominated by the structural fissures formed by the strong regional geological structures, followed by the non-structural fissures formed by the exogenous geological processes. Non-structural fissures and more concentrated in the surface below the ore body surface and shallow 10 meters,