论文部分内容阅读
在某煤矿的保护层开采过程中,为了研究被保护煤层的透气性变化情况,在没有岩石考察巷道的条件下,行业内首次利用在保护层工作面回采前施工考察钻孔并安装远距离数据观测装置,研究被保护煤层的透气性变化与保护层工作面推进距离之间的关系,进而研究保护层开采中,被保护煤层的透气性变化规律,确定保护层开采对增加被保护煤层透气性的有效性。
In the process of protective layer mining in a coal mine, in order to study the change of permeability of the coal seam to be protected, under the condition of no rock investigation of the roadway, the industry first makes use of the construction inspection drilling and the installation of long-distance data before the protective face mining Observation device to study the relationship between the change of permeability of coal seam and the propulsion distance of protective caving face to study the variation law of permeability of the protected coal seam during the mining of protective seam and determine the effect of protective layer mining on increasing the permeability of the protected coal seam Effectiveness.