基于五图双系数法的煤层底板突水危险性研究

Research on Water Inrush Forecast of Coal Seam Floor Based on Five Figures and Double Coefficients Method

为了更准确地评价底板突水危险性,应用五图双系数法对煤层底板突水危险性进行风险评估。以某矿主采煤层作为研究对象,首先收集煤矿基础数据并对其进行标准化,通过sufer软件,建立影响各底板突水指标的等值线图,最后通过各个因素的等值线图,将量化的数据按权重进行叠加,得到底板突水风险带压评价图。在图中可以直接读出矿井底板突水的安全区、威胁区以及危险区。通过对五图结果的综合分析,判断出研究区中心区域最高危险等级为3级威胁区,结合该区域存在断层和水头较高的实际情况,证明了五图双系数法预测的准确性。

In order to forecast the water inrush problem more accurately, the five figures and double coeffi- cients method is used to estimate the risk of water inrush. Taking one coal seam as target to research the water inrush problem, this poper firstly collects coal mine basic data and standardized them, then determines the weight of each index using five figures and double coefficients method, establishes contour maps which influ- ence water inrush index through ＇ sufer＇ software. Lastly,it composites quantitative data according to the con- tour maps and gets evaluation map of floor water inrush risk with high pressure. In this map, the safe region, transition region and danger region can be easily read. Throngh the analysis of the five maps result, the highest danger level of the research central area is estimated to be 3 - level threatened area, and combining the actual situation of the area having fault and high waterhead, the forecast based on fine figures and double coefficients method is proved accurate.