矿井层间滑动构造定量评价——以潘集一矿为例

煤层及其顶底板中滑动现象极为普遍。层滑构造是导致煤层不稳定的主要因素,常常造成煤层厚度的突然变化,甚至形成无煤区,严重影响煤炭生产。为了掌握并了解矿区层滑构造的分布规律及发育强度,采用模糊综合评判法,取煤层层滑断层密度、煤层异常指数、断层密度、断层的强度指数、构造煤的发育强度指数、岩层组合关系量化参数6个评价指标,对矿区层间滑动构造复杂程度进行评价。结果表明:采用模糊综合评判法所得评价结果与矿区揭露结果相似。结合矿区地质条件预测深部未采区层滑构造发育程度取得了良好的效果,这为矿区生产部署提供了参考依据。

The research of quantitative evaluation of seam-gliding structure and its application in coal mine

The sliding phenomenon between coal seam and its roof or floor is very common.Seam-gliding structure is the major factor that makes coal seam unstable, often caused by sudden changes in thickness of coal seam, even formed non-coal district, seriously impacting production. In order to master and find out the distribution law and development intensity of seam-gliding structure, fuzzy comprehensive assessment was used, six assessment indices, i.e. seam-gliding fault density, abnormal index of coal seam, fault density, intensity index of fault, development intensity index of structural coal, quantitative parameters of rock combination were taken to evaluate the complex degree of the seam-gliding structure in coal mine. The results showed that the results from using fuzzy comprehensive assessment were similar with the results exposed by coal mine. Good effects were obtained for predicting the development intensity of the seam-gliding structure in deep unmined areas in combination with geological conditions of coal mine, providing references for production arrangement of coal mine.