基于水化学特征分析的象山矿井突水水源判别

1.西安科技大学 地质与环境学院,陕西 西安 710054; 2.国土资源部 煤炭资源勘查与综合利用重点实验室,陕西 西安 710054

矿井突水; 水质分析; Piper三线图; 聚类分析

Discrimination of Water Inrush Source in Xiangshan coal mine based on chemical characteristics of groundwater
DAI Ge-lian1,2,XUE Xiao-yuan1,NIU Chao1

(1.College of Geology and Environment,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Key Laboratory of Coal Resources Exploration and Comprehensive Utilization,Ministry of Land and Resources,Xi' an 710054,China)

mine water bursting; water quality analysis; Piper trilinear nomograph; cluster analysis

DOI: 10.13800/j.cnki.xakjdxxb.2017.0211

备注

为能够快速的、准确的识别矿井突水水源,减少煤矿人员伤亡和经济损失,以象山煤矿为例,应用Piper三线图法对井田内3组基岩含水层(奥陶系灰岩含水层、石炭系砂岩/灰岩含水层、二叠系砂岩裂隙含水层)中水质类型进行划分,采用水质分析对比和系统聚类分析相结合的方法,通过对井田内3组基岩含水层中28个水样进行的分析,获得了不同基岩含水层水的化学特征,根据水化学特征,将突水点处的待定水样和3组基岩含水层中的水样对比来判别矿井突水水源,同时提出了利用模糊聚类方法进一步确定矿井突水水源。研究结果表明,石炭系砂岩(灰岩)水和奥陶系岩溶水的水化学特征都与待定水样比较相似,不能轻易识别; 聚类分析法能够排除干扰因素并最终精确判别矿井突水水源,即象山煤矿280排矸石门突水的水源为奥灰岩溶水,预测结果与实际相符,表明该方法针对矿井突水的水源判别具有较好的准确性。

In order to distinguish water sources of mine water bursting quickly and accurately,and reduce coal mine personnel casualties and economic losses,taking Xiangshan coal mine as an example,we use the Piper trilinear nomograph method to divide Water types in three sets of groundwater in the bedrock aquifer which are Ordovician limestone aquifer,Carboniferous sandstone/limestone aquifer,Permian sandstone fractured aquifer,combine water quality analysis and comparison method and systematical clustering method to analy 28 samples of the main aquifers in the minefield and reveal the hydrochemical characteristics of different types of groundwater.By comparing water chemistry type of undetermined water samples with water chemistry type of water samples in the three bedrock aquifers to discriminate mine water inrush source,meanwhile we propose a fuzzy clustering method to further determine mine water inrush.It is found that the water chemistry characteristics of the Carboniferous sandstone(Limestone)water are similar to that of the Ordovician karst water,which is not easy to distinguish; The possibility of water inrush from Carboniferous sandstone(Limestone)can be excluded after by cluster analysis.We find the water source of water inrush is Ordovician limestone karst water at 280 Gangue of Shimen in Xiangshan coal mine.The predicted results are in agreement with the actual results,it shows that this method has better accuracy for the water source identification of mine water inrush.