摘要
文章通过室内静水溶蚀实验测定了三峡地区香溪河流域震旦-三叠系碳酸盐岩的化学溶蚀速率,探讨了碳酸盐岩的化学溶蚀速率对岩石化学组分的响应关系,为区域岩溶量化研究与地层含水性评价等提供了科学依据。研究结果表明:较纯碳酸盐岩的溶蚀速率受到CaO、SrO的促进作用和MgO的抑制作用共同控制,而这三者对纯灰岩的溶蚀速率影响较小;碳酸盐岩中的酸不溶物对化学溶蚀过程呈现出抑制的趋势。碳酸盐岩的化学溶蚀速率受到多化学组分的共同影响,综合决定了碳酸盐岩的可溶性。
In this paper,the chemical dissolution rate of carbonate rocks,aging from the Sinan to Triassic sampled from the Xiangxi river basin,Three Gorges Area,was determined by indoor static water dissolution experiments.The response relationship between the chemical dissolution rate of carbonate rocks and the chemical composition of rocks was discussed,which provides a scientific basis for the quantitative studies of regional karst and aquosity evaluation of karst aquifers.The results show that the dissolution rates of relatively pure carbonate rocks are controlled by the promotion of CaO,SrO and the inhibitory effect of MgO,but these three factors have little influence on the dissolution rate of pure limestone.The acid insoluble substance in carbonate rocks presents an inhibiting tendency on chemical dissolution process.As a result,the dissolution rate of carbonate rocks is influenced by the multi-chemical composition,which comprehensively determines the solubility of carbonate rocks.
作者
陈如冰
罗明明
罗朝晖
陈植华
周宏
CHEN Rubing;LUO Mingming;LUO Zhaohui;CHEN Zhihua;ZHOU Hong(School of Environment Studies,China University of Geosciences,Wuhan,Hubei 430074,China;Wuhan Zhong Di Huan Ke Hydrological Engineering Environment Science and Technology Consulting Co.,Ltd,Wuhan,Hubei 430223,China;Institute of Geological Survey,China University of Geosciences,Wuhan,Hubei 430074,China;Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics,MNR and GZAR,Guilin,Guangxi 541004,China)
出处
《中国岩溶》
CAS
CSCD
北大核心
2019年第2期258-264,共7页
Carsologica Sinica
基金
国家重点研发计划课题(2017YFC0406105)
自然资源部、广西岩溶动力学重点实验室开放基金(KDL201702)
中国地质调查局项目(12120113103800、DD20160304、DD20190824)
国家自然科学基金(41807199)
湖北省自然科学基金(2018CFB170)
中央高校基本科研业务费专项资金资助项目(CUG170670)
关键词
三峡地区
碳酸盐岩
溶蚀实验
化学溶蚀速率
化学组分
Three Gorges Area
carbonate rocks
dissolution experiment
chemical dissolution rate
chemical composition
