对江苏沛县新庄铁矿区富水性规律的初步认识

A preliminary understanding of water-rich regularity in Xinzhuang iron mining area,Peixian,Jiangsu Province

江苏沛县新庄铁矿属于典型的矽卡岩类接触交代型铁矿,矿区主要富水含水层为奥陶系灰岩。分析了该矿区地下水补径排条件、矿区含水层特征及断层富水性特征,初步总结了该矿区富水性规律。认为矿坑涌水主要受上覆灰岩控制,其次受构造断层控制;断层的涌水量受裂隙充填影响变化较大,增加了突水、透水的风险性,将直接威胁矿山的生产安全。总结该矿区富水性规律,可为国内相同类型矿山的前期勘查及后期矿床开采提供参考。

Xinzhuang iron mining area is a typical iron ore of metasomatic skarn contact type,and the main aquifer is Ordovician limestone. The conditions of the groundwater recharge runoff and drainage,the characteristics of the aquifer and water rich property of fault were analyzed in the mining area. The laws of water rich property in the mining area were firstly summarized. It is concluded that the ore pit water inflow is mainly controlled by the above limestone and also influenced by the fault structure. Due to the influence of the fracture filling,the water inflow of the fault is greatly varied,which will increase the risk of water invasion and seepage and also threaten the production safety directly. The research above can provide a reference for preliminary exploration of domestic mines of the same type,and provide the basis for the later mine exploration.