裴沟煤矿典型断裂构造带水化学变化特征

Characteristics of hydrochemical changes in typical faulted tectonic zones of Peigou Coal Mine

断裂运动是错综复杂的地质作用,物质组成的变化能够通过水质中阴阳离子含量直观表现。以裴沟煤矿近20年来的突(涌)水点化验数据为依据探究各含水层水化学普遍性质,发现阳离子含量和矿化度可以作为水源判别的重要指标,以典型构造浮山寨断层为对象研究断裂构造带水化学变化特征,结果显示距离断裂构造带越近,水中Ca^2++Mg^2+含量减小、Na^++K^+含量增大、矿化度降低,揭示断层两盘不同含水层间水掺和程度。

Fault movement is an intricate geological process,and changes in material composition can be directly expressed by the content of anions and cations in water quality.This paper used the water burst(gush)test data of the Peigou Coal Mine in the past 20 years to explore the general properties of water chemistry in each aquifer,and found that cation content and salinity could be used as important indicators for water source identification.The typical structure of the Fushanzhai fault was used as an example.The object studies the characteristics of water chemical changed in the faulted structural zone.The results showed that the closer to the faulted structural zone,the Ca^2++Mg^2+content in the water was decreased,Na^++K^+was increased and the salinity was decreased,it revealed the degree of water mixing between different aquifers on the two plates of the fault.