工程地质学报2017，Vol.25Issue(1)：180-189,10.DOI:10.13544/j.cnki.jeg.2017.01.024
海底金矿矿坑涌水水源判识及演化研究
RECHARGE SOURCE IDENTIFICATION AND EVOLUTION OF INFLOWING WATER IN A SEABED GOLD MINE
摘要
Abstract
This paper aims to capture the evolution rules of fracture-inflowing water at the shallow depth of Xinli gold deposit exploited undcr seawater.From a hydrogeochemical point of view,it uses the principal component analysis and maximum likelihood method to identify the water-recharging sources of the inflowing water and estimate their mixing ratios.Using numerical modeling,the paper verifies indirectly the inflowing water evolutionary character and calculates it with the proposed method.The research shows that the method can effectively identify the combined patterns and variations of end-members of mine inflowing water,and calculate the most possible mixing ratios.The end-member model of the fracture-inflowing water of the Xinli gold mine has been changed from the type Ⅰ bedrock saline water+seabottom groundwater to the type Ⅰ bedrock saline water+seabottom groundwater+seawater.The sea bottom groundwater and seawater are prone to percolating into the mine pit from the shoulders of its both sides.The seawater percentage of the mine inflowing water goes through an increasing first and decreasing history.关键词
海底金矿/裂隙涌水/水源判识/混合比/演化Key words
Seabed gold mine/Fracture-inflowing water/Water-recharging source identification/Mixing ratio/Evolution分类
矿业与冶金引用本文复制引用
李克蓬,马凤山,张洪训,李威,吕英磊..海底金矿矿坑涌水水源判识及演化研究[J].工程地质学报,2017,25(1):180-189,10.基金项目
国家重点研发计划课题(2016YFC0402802),国家自然科学基金项目(41172271,41372323)资助. （2016YFC0402802）
