基于Surfer的煤层底板突水危险性评价

Risk evaluation of confined water inrush from coal seam floor based on Surfer

以平禹一矿为例,以同样具备GIS的空间信息叠加功能,但普及度比GIS高和使用便捷的Surfer软件为平台,建立了评价底板突水危险性的脆弱性指数层次模型和突水系数模型。评价结果显示,平禹一矿二1煤层底板标高-60m以浅属于安全区,不受底板灰岩水的影响;标高-60^-400m且不受断层影响的区域属于突水威胁区,带压开采时存在突水隐患;标高-400m以深及标高-60^-400m范围的断层带属于突水危险区,带压开采时底板突水危险性很高。平禹一矿对突水威胁区和危险区的灰岩水害进行了综合防治,使矿井在极其复杂的水文地质背景下,连续10年实现了高效、安全生产。

Taking Pingyu No.1 Mine as an example,based on the Surfer software that has the GIS spatial information superposition function,and using the Surfer software as the platform has more prevalence rate than the GIS,a hierarchical model of risk vulnerability index and a water inrush coefficient model for evaluating water inrush risk from coal seam floor were established.The results showed that the Areas of II1 coal seam floor elevation was less than-60 m,which was not affected by the floor limestone water,the area with the elevation between-60 mand-400 m without the effect of the fault belonged to the water threatening area;the area with the elevation between-60 mand-400 mor below with the effect of the fault belonged to the water inrush danger area.Pingyu No.1 Mine undertook integrated prevention and control measures of limestone water hazard in water threatening area and dangerous area,achieving efficient and safe production for ten consecutive years under extremely complicated hydrogeological background.