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    河南省深部矿井瓦斯动力灾害辨识及差异化管控技术研究

    Study on identification and differential management and control technology of gas dynamic disasters in deep mines in Henan Province

    • 摘要: 随着河南省矿井开采向深部延伸,煤层“三高一低”(高地应力、高瓦斯、高地温和低渗透性)特征日益突出,而传统均质化管控模式导致瓦斯动力灾害治理存在成本高、周期长、效果不佳等问题,基于此构建了深部瓦斯动力灾害精准辨识与差异化管控体系。通过系统分析太行、嵩箕、崤熊三大构造分区的瓦斯地质控制机理及地应力分布规律,阐明了灾害区域性分异成因;其次,基于瓦斯赋存、地质构造、应力规律、采掘布局四维透明化技术,整合多源数据建立“矿区−矿井−采区−工作面”四级风险辨识模型及“红−黄−绿”三色预警标准,确立“四四三”(四个维度、四个尺度和三色分级管理)差异化管控理论框架;提出适配不同风险等级的治理技术路线及灾害强度、装备性能与经济成本的动态匹配策略,形成涵盖岩石保护层开采、“钻−冲−割”增透及大功率定向钻进的技术装备体系;平顶山、鹤壁、焦作等典型矿区工程验证显示,该体系可使瓦斯抽采浓度提升1.3~1.8倍,抽采率提高25%以上,采掘衔接效率提升25%,单一工作面治理周期缩短1.5~2.0a,有效降低管控资源冗余消耗。研究提出河南省差异化管控战略实施路径及政策保障建议,推动瓦斯防治由“经验防控”向“精准治理”转型,为我国深部复杂地质条件下煤炭资源安全高效开采提供可复制的理论支撑、技术装备体系及实践范式。

       

      Abstract: With the continuous extension of coal mining into deeper strata in Henan Province, deep mines are increasingly characterized by the “three-high and one-low” conditions, namely high in-situ stress, high gas content, high geothermal temperature, and low permeability. Under such conditions, traditional homogenized management approaches have resulted in high governance costs, prolonged treatment cycles, and unsatisfactory effectiveness in controlling gas dynamic disasters. Therefore, a systematic framework for accurate identification and differentiated control of gas dynamic disasters in deep mines was established. First, through a systematic analysis of the gas geological control mechanisms and in-situ stress distribution patterns within the three major tectonic divisions, namely the Taihang, Songji, and Xiaoxiong zones, the genetic mechanisms underlying the regional differentiation of gas dynamic disasters were elucidated. Subsequently, based on a four-dimensional transparent characterization technology integrating gas occurrence, geological structures, stress regimes, and mining layout, multi-source data were synthesized to construct a four-level risk identification model encompassing the mine field, mine, mining district, and working face. In parallel, a three-color early warning standard (red, yellow, and green) was developed, thereby establishing the “four-four-three” differentiated control framework, which consists of four dimensions, four spatial scales, and three-level classification management. Furthermore, tailored technical routes for disaster prevention and control corresponding to different risk levels were proposed. A dynamic matching strategy among disaster intensity, equipment performance, and economic cost was also developed. Accordingly, an integrated technical and equipment system was formed, including protective layer mining, permeability enhancement through drilling, hydraulic flushing, and slotting, as well as high-power directional drilling technologies. Finally, field applications in representative mining areas, including Pingdingshan, Hebi, and Jiaozuo, demonstrate that the proposed system can significantly improve gas extraction performance, with extraction concentration increased by 1.3–1.8 times and extraction efficiency enhanced by more than 25%. In addition, the mining continuity efficiency is improved by 25%, while the treatment cycle for a single working face is reduced by 1.5–2.0 years, thereby effectively reducing redundant resource consumption in disaster control. The proposed study further outlines the implementation pathway and policy support recommendations for differentiated control strategies in Henan Province, promoting the transformation of gas disaster management from experience-based control to precision-oriented governance. This work provides a reproducible theoretical foundation, a systematic technological framework, and a practical paradigm for the safe and efficient exploitation of coal resources under complex geological conditions in deep mines.

       

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