水资源与水工程学报2011，Vol.22Issue(4)：21-24,30,5.
盐酸盐溶液中温度对方解石和白云石溶解度的影响
Influence of temperature on dissolving degrees of calcite and dolomite in hydrochloride solution
摘要
Abstract
In order to prevent karst disaster, the paper researched the influence of dissolving degrees of limestone and dolomite caused by temperature in hydrochloride solution. A water chemistry simulation software - phreeqc developed by American Geological Investigation Institute was used, the relation model between temperature and dissolving degrees of calcite and dolomite was simulated under different CO2 pressure and different concentration NaCl and MgCl2 solution,which was tested by experiment. The results indicated that dissolving degrees of calcite and dolomite in NaCl solution is larger than that in pure water; The dissolving degrees of calcite in MgCl2 solution is larger than that in NaCl solution under same condition; without CO2 pressure, in the same concentration salt solution, the dissolving degrees of limestone and dolomite increased rapidly with temperature; While pco2 = 10-4.5 Mpa the reverse happened, but it is larger than that without CO2 pressure. In karst collapse area, the erosion of rock improved with temperature increasement, which caused increasement of the danger degree of collapse in groundwater system which have no obvious relationship with atmospheric; while the erosion of rock increased with reducing temperature (larger than 0℃), so as to enhunce the danger degree of collapse in groundwater system.关键词
Phreeqc软件/氯化物/方解石/白云石/溶解度/温度Key words
Phreeqc software/ chloride/ limestone/ dolomite/ dissolving degrees/ temperature分类
资源环境引用本文复制引用
梁冰,陈楠,姜利国..盐酸盐溶液中温度对方解石和白云石溶解度的影响[J].水资源与水工程学报,2011,22(4):21-24,30,5.基金项目
国家自然科学基金资助项目(50874102) （50874102）
国家自然科学基金资助项目(50974070)的部分研究成果 （50974070）
