作　　者： (徐斌）; (董书宁）; (徐艳玲）;

机构地区： 中国矿业大学(北京)地球科学与测绘工程学院

出　　处： 《矿业科学学报》 2017年第4期307-315,共9页

摘　　要： 根据深部急倾斜煤层工作面开采方式、积水位置的不同组合,将防水煤柱留设分成三种常见模式,并分析了每一种模式煤柱留设的主要依据;运用块体极限平衡理论建立急倾斜煤层失稳力学模型,推导出煤柱区段稳定尺寸的计算公式;针对不同矿区的具体条件,提出急倾斜防水煤柱留设合理尺寸的优化体系。将优化设计的理论运用于唐山某矿,得出防水煤柱留设合理高度为59.3 m,而该矿在防水煤柱高度60 m的条件下实现安全试采,说明优化设计理论具有工程实践指导作用。 According to different combinations of mining methods and water body positions in deep coal seam,three basic structural patterns were created and main basis of setting up reasonable waterproof coal pillar size for each pattern were proposed. The mechanics model of the stability of waterproof pillar was established,and formulas for critical value of stable length of waterproof pillar were derived. Based on different conditions for each coal mine,the optimization design theory on setting up reasonable waterproof coal pillar size was proposed. The above optimization design theory was applied to a mine in Tangshan. Results showed that the reasonable size of waterproof pillar could be 59. 3 m. Actually the steep mining face was safely and successfully exploited with 60 m height of waterproof pillar,indicating that the theory could be useful for practical projects.

关 键 词： 急倾斜煤层 防水煤柱 优化设计 块体极限平衡法