峰峰矿区突水类型划分及突水模式
Water inrush type division and water inrush mode in Fengfeng Mining Area
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摘要: 随着浅部煤层资源的日益枯竭，峰峰矿区现有生产矿井均进入煤田深部开采时代，深部煤层开采时会面临高地应力、高温、高岩溶水压、复杂的导水构造和强烈的开采扰动问题，各类突水新问题、新特征也逐步涌现，表现出与浅部开采不同的水文地质规律。在分析峰峰矿区历年72次突水案例的基础上，单因素地划分突水类型，多因素地归纳突水模式，根据突水水源的补给来源、开采煤层与突水含水层及通道的空间位置关系，将突水类型划分为7个大类、28个亚类、50个细类；同时，系统地总结了致灾成因的多种因素，多角度分析了突水的表现形式，基于其关键致灾因素不同，归纳了9种突水模式，并结合典型的突水案例，阐明了其突水模式的主要特征和机理。Abstract: With the depletion of shallow coal resources, the existing production mines in Fengfeng Mining Area have entered the era of deep coal mining. Deep coal mining will face the problems of high ground stress, high temperature, high karst water pressure, complex water conduction structure and strong mining disturbance. All kinds of new problems and new characteristics of water inrush are gradually emerging, showing different hydrogeological laws from shallow mining. Based on the analysis of 72 water inrush cases in Fengfeng Mining Area over the years, the water inrush types are divided by single factor and the water inrush modes are summarized by multiple factors. According to the recharge source of water inrush source and the spatial relationship between coal seam exploitation and water inrush aquifer and channel, the water inrush types are divided into 7 categories, 28 subclasses and 50 types. At the same time, the paper systematically summarizes the various factors of disaster causes, analyzes the manifestation of water inrush from multiple angles, sums up 9 kinds of water inrush modes based on different key disaster causing factors, and illustrates the main characteristics and mechanism of water inrush modes combined with typical water inrush cases.
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