气体流场动态平衡多点调控技术
发布时间：2019-02-12 17:42
【摘要】：基于矿井通风理论,系统分析了浅埋藏近距离煤层群开采条件下多层复合采空区内气体流场的漏风状态、漏风源、汇节点及压能均衡要素,依据多点联合调控的理念,集成了密闭堵漏、地表裂隙回填封堵、采动裂隙"O形圈"重点漏风通道封堵、关键层采空区注氮增压、工作面系统风窗-风机调压等技术的特点和优势,形成了气体流场动态平衡多点调控技术,于回采工作面、上覆采空区、灾变区域之间实现气体流场的"动态平衡",达到抑制有害气体侵入、减少采空区供氧的目的,通过在现场的实际应用,取得了良好的效果。
[Abstract]:Based on the theory of mine ventilation, this paper systematically analyzes the air leakage state, air leakage source, sink node and pressure energy balance elements of gas flow field in multilayer compound goaf under the condition of shallow buried short distance coal seam group mining, and according to the idea of multi-point joint regulation and control. It integrates the characteristics and advantages of closed leakage plugging, surface fissure backfilling and plugging, key air leakage passage plugging of mining fissure "O circle", nitrogen injection and pressure increasing in goaf of key layer, air window and fan regulating pressure of working face system, etc. The multi-point control technology of dynamic equilibrium of gas flow field is formed, which realizes the "dynamic balance" of gas flow field between mining face, overlying goaf and catastrophic area, so as to restrain harmful gas invasion and reduce oxygen supply in goaf. Through the practical application in the field, good results have been obtained.
【作者单位】： 神华集团有限责任公司;
【分类号】：TD72
，
本文编号：2420643
[Abstract]:Based on the theory of mine ventilation, this paper systematically analyzes the air leakage state, air leakage source, sink node and pressure energy balance elements of gas flow field in multilayer compound goaf under the condition of shallow buried short distance coal seam group mining, and according to the idea of multi-point joint regulation and control. It integrates the characteristics and advantages of closed leakage plugging, surface fissure backfilling and plugging, key air leakage passage plugging of mining fissure "O circle", nitrogen injection and pressure increasing in goaf of key layer, air window and fan regulating pressure of working face system, etc. The multi-point control technology of dynamic equilibrium of gas flow field is formed, which realizes the "dynamic balance" of gas flow field between mining face, overlying goaf and catastrophic area, so as to restrain harmful gas invasion and reduce oxygen supply in goaf. Through the practical application in the field, good results have been obtained.
【作者单位】： 神华集团有限责任公司;
【分类号】：TD72
，
本文编号：2420643
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