采动岩体渗流与煤矿灾害防治

Seepage of mining mass and control of mine disasters

针对煤矿采动破碎岩体高渗透、非Darcy流等特性,利用自行研制的渗流试验装置进行渗透性测试,并在此基础上建立了能够描述采动岩体渗流非线性和随机性特征的渗流理论.以采场底板隔水关键层力学模型为基础,建立了以采动岩体渗流失稳为突水判据的预测预报体系.分析了综放工作面瓦斯涌出规律及采空区瓦斯运移规律,开发出治理高产高效综放工作面瓦斯超限的J型通风技术.

To study on the remarkable permeability of mining fractured rock and non-Darcy seepage in it,its permeability is determined using self-designed testing instruments.Based on this,the seepage theory is established which can describe the non-linearity and randomness of the seepage process in the mining fractured rock.The forecast and prediction system of mine disasters in which the seepage instability of the mining fractured rock is as water inrush criterion is established based on the mechanic model of the key water-resisting layer of mining floor.The gas emission law in fully mechanized sublevel caving working face and the gas migration law in gob are analyzed,and a kind of J-shape ventilation technique is developed for the treatment of gas over-limitation of the fully mechanized sublevel caving working face of high-yield and high-efficiency.