摘要
应用离子比例系数法分析了峰峰矿区东部地下水化学成分特征,结合含水层岩性条件,为水文地球化学模拟中"可能矿物相"的确定提供依据;采用PHREEQC软件对含水层中水–岩作用进行水文地球化学模拟,模拟计算出饱和指数,通过质量平衡模拟计算水–岩作用过程中主要矿物相的转化量。结果表明:方解石和白云石处于饱和状态,在适当的条件下会沉淀,而岩盐、石膏处于未饱和的状态,在适当的条件下将继续溶解。沿地下水流路径,从五矿奥灰水—一矿奥灰水—一矿副井水,地下水系统中白云石、岩盐、石膏溶解,方解石沉淀,且发生了阳离子交换作用。研究矿井水中水–岩相互作用,初步探讨废弃矿井水文地球化学演化机制,对分析矿井水文地球化学演化的影响因素有重要作用。
Ion ratio method was employed to analyze the hydrochemical characteristics of groundwater in the east of Fengfeng mining area to provide the basis for determining the plausible phase in hydrogeochemical simulation.The simulation of groundwater-rock interaction was conducted by using computer code PHREEQC. Mineral saturation indexes were calculated to assess the equilibrium status of groundwater-minerals reactions. Phase mole transfers in water-minerals interaction were calculated through the mass balance simulation. The results show that calcite and dolomite were supersaturated, would precipitate under appropriate conditions. Halite and gypsum were undersaturated, they would continue to dissolve under appropriate conditions. Along Ordovician limestone groundwater flow paths, dolomite, halite and gypsum dissolved, calcite precipitated, and cation exchanges took place from Fifth coal mine to First coal mine. The simulation of the mine groundwater-rock interaction could play an important role in the study of influencing factors of mine hydrogeochemical evolution.
作者
郭钰颖
吕智超
王广才
马栾
许庆宇
黄旭娟
高树志
GUO Yuying;LYU Zhichao;WANG Guangcai;MA Luan;XU Qingyu;HUANG Xujuan;GAO Shuzhi(School of Water Resources and Environment, China University of Geoscience, Beijing 100083, China;Sinorex Resource & Environment Engineering (Beijing)Co., Ltd., Beijing 100012, China)
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2016年第6期101-105,共5页
Coal Geology & Exploration
基金
国家自然科学基金项目(41272269)
全国矿山地质环境调查与评估项目(1212011220228)~~
