摘要
通过岩溶水总硬度演变趋势模型,预测今后数年内,徐州七里沟水源地岩溶水硬度呈上升趋势,而增幅趋于减小。到1995年超标水出现概率将增加到0.542,40年后平均总硬度达到最大值。
The article sets up an evaluation trend model of total hardness of karst water from water resource site in Qiligou, Xuzhou and predicts that the hardness of karst water will increases in several years and the probability that occurs super- standard water with over 25 H°will change from 0.51 in 1987 to 0. 542 in 1995 until the maximum value of 27.038 H°after about forty years.The article considers that the increase of total hardness of karst water is caused by the industri- al,agricutural and living polution.But with the increase of exploited reserves of karst water,the cove of influance is en- larged continuously,which results in the change of hydrogeological conditions.As a result,the Ca,Mg ions distribution area is stable in the southwest part of water resource site where the hardness is less than 15 H°.Owing to the addition of polluted water into urban and suburban districts,the content of chemical composition in karst water increases and interac- tion of equilibrium and constraint between compositions restricts the unlimited increase of hardness and deduces the proba- bility that occurs over 35 H°water.However,the main contents of environment protectinn still are to tackle the pollu- tion,improve the exploitation project of karst water and control the deterioration of water quality and increase of hardness in Qiligou water resource site in the next few decades.
出处
《江苏地质》
1991年第2期101-104,共4页
Jiangsu Geology