基于矿井突出危险性评估的煤层瓦斯参数分析与确定

Analysis and Determination of Coal Seam Gas Parameters Based on Mine Outburst Risk Assessment

矿井突出危险性评估目前暂未制定相关行业标准,为了使评估工作科学、规范、具有较强操作性,在评估前期工作的基础上,根据现场勘察和收集资料的完整程度,煤层瓦斯含量结合勘探瓦斯钻孔提钻停顿时间、钻孔埋深、煤层灰分、瓦斯成分和瓦斯赋存规律,进行可靠性分析与修正;煤层瓦斯压力利用与瓦斯含量的朗格缪尔关系测定;其它煤层瓦斯参数,首先采用勘探实测的数据,若勘探无实测,则参照邻近矿井同一煤层的实测瓦斯参数或按照层间距就近原则参照评估矿井的邻近煤层瓦斯参数。

At present,the risk assessment of coal and gas outburst is not yet to formulate relevant industry standards. In order to make the evaluation work more scientific and more standardized and more practical,based on the previous assessment,we analyze and modify the reliability of gas content which combines with the pause time and drilling depth and coal ash and gas composition and gas occurrence law of the exploration of gas drilling according to the complete degree of field investigation and data collection. The gas pressure is obtained according to the gas content of the Langmuir relation. Other gas parameters use the measured data first. And if there is no measured data,the gas parameters refer to the same coal seam of adjacent mines or adjacent coal seam gas parameters according to the principle of proximity spacing.