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在分析砾岩分布特征及其水文地质特征的基础上,以矿山压力控制理论为指导,运用岩层沉降理论推断了华丰矿1409工作面在采厚为6.5m的情况下,导水裂隙带发育高度为96.2m,揭示了导水裂隙能够导致顶板砾岩水突出.结合矿山压力观测资料和顶板突水量资料,阐述了矿山压力和顶板砾岩突水突出之间的因果影响关系.根据2407工作面冲击地压监测资料,阐明冲击地压对顶板突水的促进作用.建立了顶板水沿工作面下平巷突出运移的模型,阐明了斑裂线是导致砾岩水大量突出的主要导水通道.
Based on the analysis of the distribution characteristics of conglomerate and its hydrogeological features, taking the theory of mine pressure control as a guide, the rockfall settlement theory is used to infer that the development of water-conducted fracture zone under the condition of mining thickness of 6.5m in Huafeng Coal Mine 1409 face The height is 96.2m, revealing that the water-leading fracture can cause the conglomerate water to protrude from the roof.According to the mine pressure observation data and the roof water inrush data, the causal relationship between mine pressure and roof conglomerate water inrush is expounded.According to 2407 working face Rockburst monitoring data to clarify the role of rockburst in promoting water inrush of roof.The model of roof water movement along the roadway under the working face is set up to illustrate that the spot-break line is the main water-conducting channel leading to a large number of conglomerate water prominence.