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平顶山矿区瓦斯动力灾害差异化防控体系与实践

Differentiated prevention system and practices for Pingdingshan mining area gas dynamic disasters

  • 摘要: 深部煤炭资源开采面临着“高应力、高瓦斯、高地温”三高致灾因素耦合威胁,使得瓦斯动力灾害成为制约深部煤炭资源安全高效开发的世界性难题。平顶山矿区是我国煤矿深部开采的典型代表,然而随着矿井开采年限的增加和采深的延深,瓦斯动力灾害的规模及风险有所增加,灾害治理“成本高、效率低、周期长”的问题愈发显著。从平顶山矿区瓦斯动力灾害差异特征入手,以瓦斯赋存、应力分布、地质构造、采掘布局“四个维度”为基础,提出矿区、矿井、采区、工作面“四个尺度”的瓦斯风险区辨识方法,通过风险区“红、黄、绿”三色管理加以匹配差异化防控技术,构建平顶山矿区瓦斯动力灾害差异化防控体系。立足于该体系,综合平顶山矿区瓦斯动力灾害区域差异特征、地质构造展布、地应力与瓦斯赋存特征等多元信息,将矿区划分为“红”(矿区东部)、“黄”(矿区西部)和“绿”(矿区中部)3个风险等级管理区,在此基础上精准匹配煤层群保护层开采、单一煤层水力化增透、地面井抽采技术,配合矿区瓦斯管理方法,实现精准高效绿色瓦斯治理,最终达到“安全‒技术‒经济”一体化目标。

     

    Abstract: The mining of deep coal resources is facing the coupled threat of “high stress, high gas, and high temperature” three high disaster causing factors, making gas dynamic disasters a global problem that restricts the safe and efficient development of deep coal resources. Pingdingshan mining area is a typical representative of deep mining in China’s coal mines. However, with the increase of mining years and the extension of mining depth, the scale and risk of gas dynamic disasters have increased, and the problem of “high cost, low efficiency, and long cycle” in disaster management has become increasingly prominent. Starting from the differential characteristics of gas dynamic disasters in Pingdingshan mining area, based on four-dimensional framework—gas occurrence, stress distribution, geological structures, and mining layout—as the foundation for identifying gas risk zones at four spatial scales: mining area, mine, mining district, and working face. By applying a red-yellow-green tri-color management system for disaster risk zoning, differentiated prevention technologies are matched accordingly, thereby establishing a differentiated prevention system for Pingdingshan mining area gas dynamic disasters. Based on this system, and by integrating multisource information such as the characteristics of coal and gas outbursts, geological structure distribution, in-situ stress, and gas occurrence in the Pingdingshan mining area, the region is divided into three risk-level management zones: “red” (eastern area), “yellow” (western area), and “green” (central area). On this basis, precise technological matches are implemented, including protective seam mining for coal seam groups, hydraulic permeability enhancement for single coal seams, and surface borehole extraction techniques. These are combined with efficient gas utilization and management measures to achieve accurate, efficient, and environmentally friendly gas control, ultimately realizing the integrated goal of safety, technology, and economy.

     

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