基于地学信息复合叠置分析对煤层底板突水的预测

Prediction of water inrush from coal seam floor confined based on geo-information composite overlay analysis

分析了影响矿井承压突水的影响因素,介绍了多源地学信息复合叠置法原理,并建立了突水预测流程,以此为基础借助于地理信息系统(GIS)空间分析工具,对地质构造、含水层富水性及渗透性、水压、隔水层厚度等因素进行了科学的量化,利用多因素地学信息空间复合叠置方法,建立了太原东山煤矿矿井承压水的预测模式.在此基础上,利用Spatial analyst工具获得突水指数,获取了东山煤矿15号煤层的突水判别模式,以4个突水主要控制因素为前提得出了突水灾害的分区划分指标,并根据东山煤矿15号煤层底板的各影响因素的实际数据,对其底板承压突水进行了预测预报,获取了有效的突水分区模式图.

Through analyzing of the water inrush from coal seam confined influence factors, discussed the geo-information composite overlay analysis principle and established prediction model of confined water procedure. Based on GIS spatial analysis tools, quantized scientifical factors such as geological structure, aquifer＇ s water and permeability, water pressure, thickness of block and so on. Established prediction model of confined water in Dongshan Coal Mine by space overlay method of muhi-factors information. Then got the index of inrushed water and discrimination model of the water inrush of No. 15 coal seam floor confined in Dongshan Coal Mine. In premises of four main control factors, put forward the zoning index of water inrush disaster. According to the practical data, rush from coal seam confined and got an effective partitioned mode chart for coal floor water predicted the water inrush from coal seam confined and got an effective partitioned mode chart for coal floor water bursting.