煤层顶板类型划分新方法及其稳定性评价  

A New Method of Coal Seam Roof Classification and Its Stability Evaluation

作　　者：王海军 马良 朱玉英 WANG Haijun;MA Liang;ZHU Yuying(China Coal Technology and Engineering Group Xi’an Research Institute,Xi’an 710077,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077

出　　处：《煤矿安全》2020年第4期207-212,共6页Safety in Coal Mines

基　　金：中煤科工集团西安研究院有限公司科技创新基金资助项目(2019XAYMS19,2019XAYZD09,2019XAYZD07);国家科技重大专项资助项目(2016ZX05044-002)。

摘　　要：为了对煤层顶板稳定性做出合理性评价,解决因参数选取不统一而导致评价结果失真的问题。首先从各类煤层顶板的定义入手,提出新的顶板类型划分方法,并以麟北煤田为研究对象对各类顶板进行了重新划分和评价,其次对比传统、新型顶板划分方法的评价结果,最后通过地质条件与之相同的邻近生产矿井调查,检验评价结果所反应未来矿井潜在的工程、水文地质问题。结果表明,新的划分标准可以客观的反映研究区及其周边矿井顶板特征,评价结果不仅能够反映顶板稳定性而且能够揭露潜在的工程地质及水文地质问题等安全隐患,进而为煤层顶板类型划分及稳定性评价提供方法。To make reasonable evaluation on the stability of coal seam roof and solve the problem of distortion of evaluation results caused by inconsistent parameters selection, firstly, starting with the definition of roof of all kinds of coal seams, a new roof type division method is proposed, and taking Linbei Coalfield as the research object, all kinds of roof are re-divided and evaluated;secondly, comparing the evaluation results of traditional and new roof partition methods;finally, the potential engineering and hydrogeological problems in future mines reflected by the evaluation results are tested through the investigation of adjacent production mines with the same geological conditions. The results show that the new classification standard can objectively reflect the roof characteristics of the study area and its surrounding mines to provide a method for coal seam roof classification and stability evaluation.

关 键 词：煤层顶板 伪顶 直接顶板 基本顶板 顶板类型划分 顶板稳定性 稳定性评价 

分 类 号：TD325.1[矿业工程—矿井建设]