“煤-水”双资源型矿井开采技术方法与工程应用

发布时间：2018-11-10 21:06

【摘要】：由于我国东、西部地区煤-水资源呈逆向分布,为解决煤炭资源安全绿色开发、水资源供给、生态环保之间的尖锐矛盾和冲突,实现煤矿区水害防治、水资源保护利用、生态环境改善的多赢目标,在阐述"煤-水"双资源型矿井开采概念与内涵的基础上,提出了根据矿井主采煤层的具体充水水文地质条件优化开采方法和参数工艺、多位一体优化结合、井下洁污水分流分排、水文地质条件人工干预、充填开采等"煤-水"双资源型矿井开采的技术和方法。以蔚县矿区兴源矿为工程背景,提出了松散含水层下薄基岩区房式保水开采方案,建立了煤房"固支梁"力学模型,提出了基于让压理论的煤柱设计方法,修正了屈服煤柱上覆载荷计算公式。结果表明:主关键层的存在和稳定扩大压力拱的形成是屈服煤柱设计的关键,且屈服煤柱具有足够的强度支撑扩大压力拱下方的覆岩重量;采5留4、采5留5、采6留5等方案具有可靠的安全系数。
[Abstract]:Due to the reverse distribution of coal-water resources in the eastern and western regions of China, in order to solve the sharp contradictions and conflicts between the safe and green exploitation of coal resources, the supply of water resources and the ecological protection, the prevention and control of water hazards and the protection and utilization of water resources in coal mining areas are realized. On the basis of expounding the concept and connotation of "coal-water" dual resource mine mining, this paper puts forward the optimization of mining method and parameter technology according to the specific hydrogeological conditions of water filling in the main coal seam. The techniques and methods of "coal-water" double-resource mine mining, such as optimization of multi-position, separation and discharge of clean sewage, artificial intervention of hydrogeological conditions and filling mining, etc. Taking Xingyuan mine of Yuxian mining area as the engineering background, this paper puts forward the plan of water-retaining mining in thin bedrock area under loose aquifer, establishes the mechanical model of "retaining beam" for coal house, and puts forward the design method of coal pillar based on the theory of concession pressure. The formula for calculating overburden load on yield coal pillar is revised. The results show that the existence of the main key layer and the formation of the stable expanded pressure arch are the key factors in the design of the yield pillar, and the yield pillar has sufficient strength support to enlarge the overburden weight under the pressure arch. The schemes of mining 5, 5, 6 and 5 have reliable safety coefficient.
【作者单位】：中国矿业大学(北京);国家煤矿水害防治工程技术研究中心;
【基金】：“十三五”国家重点研发计划资助项目(2016YFC0801801) 国家自然科学基金资助项目(41572222,41430318)
【分类号】：TD823

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