删除或更新信息,请邮件至freekaoyan#163.com(#换成@)

新疆喀什三角洲地下水化学特征及演化规律

本站小编 Free考研考试/2021-12-31

瀵偓闁碍婀扮粩姗礗P閿涙矮绔存稉鍥╊潚閼板啰鐖烘稉鎾茬瑹鐠囨崘顫嬫0鎴︽娓氳法婀呴敍灞剧槨閺堫兛绗夐崚棰佺閸掑棝鎸堕敍浣虹卜鐎电懓鍨濈粻妤嬬磼
547閹碘偓闂勩垺鐗庨懓鍐埡閼板啫宕�1130缁夊秵瀵氱€规碍鏆€閺夋劗娈戦崡鍐х稇缁夊秹鍘ゆ總妤咁暯鎼存挶鈧浇顫嬫0鎴礉濞戠數娲婇懟杈嚔閵嗕胶绮″ù搴涒偓浣界槈閸掓悶鈧線鍣鹃摶宥冣偓浣烘倞瀹搞儯鈧胶顓搁悶鍡愨偓浣恒仦娴兼哎鈧浇鍌ㄦ导姘モ偓浣规殌閼叉彃绺鹃悶鍡愨偓浣疯厬閺傚洢鈧浇澹撻張顖樷偓浣规煀闂傝绱堕幘顓溾偓浣圭《鐎涳负鈧礁灏扮€涳负鈧浇顓哥粻妤佹簚閵嗕礁宸婚崣灞傗偓浣告勾閻炲棎鈧焦鏂傚▽姹団偓浣告懍鐎涳负鈧椒缍嬮懖鑼缁涳拷28缁顒熺粔鎴磼
中文关键词新疆喀什三角洲水化学离子来源水化学演化水文地球化学模拟 英文关键词Kashgar River Delta in Xinjianghydrochemistryion sourceshydrochemical evolutionhydrogeochemical simulation 中文摘要 "水质型"缺水问题严重阻碍着新疆喀什地区经济的发展.为研究位于喀什地区西部的喀什三角洲地下水水化学特征及主要离子来源,于2016年6~10月采集地下水水化学样品402组,地下水氢氧同位素样品114组.综合运用数理统计、Gibbs图、离子比、Schoeller图和水文地球化学模拟等方法,分析了喀什三角洲地下水的水文地球化学特征,探讨了水化学演化规律及主要离子来源.结果表明:①该区地下水中阴离子以SO42-为主,其次为Cl-;阳离子以Na+为主,地下水类型以SO4·Cl-Na型为主;②该区地下水离子组分受岩石溶滤作用和蒸发浓缩作用控制.水中离子主要来源于蒸发岩的溶解,其次为碳酸岩的溶解.河流冲积平原潜水受蒸发浓缩作用影响,承压水还受反向阳离子交换作用和混合作用影响;③沿地下水流向,地下水离子组分浓度呈递增趋势,岩盐、白云石和石膏发生溶解,方解石沉淀. 英文摘要 Pollution-induced water shortage problems have severely hindered the economic development of Kashi Prefecture in Xinjiang. In order to study the chemical characteristics and main ion sources of groundwater in the Kashgar River Delta of Western Kashi Prefecture, 402 groundwater samples and 114 groundwater hydrogen and oxygen isotope samples were collected and tested in June to October 2016. Based on the methods of mathematical statistics, Gibbs diagram, ion ratio, Schoeller diagram, and hydrogeochemical simulation, the hydrogeochemical characteristics of the groundwater were analyzed, and the hydrochemical evolution law and the main ion sources were discussed. The following results were noted. ①SO42- was the main anion in the groundwater, followed by Cl-. Na+ was the main cation, and the groundwater was mainly SO4·Cl-Na type. ②The groundwater ion components were controlled by dissolution of rocks and evaporation. The groundwater ions were mainly derived from the dissolution of evaporites, followed by the dissolution of carbonates. Unconfined groundwater in the river alluvium plain was affected by evaporation, and the confined groundwater was affected by reverse cation exchange and mixing. ③Along the groundwater flow direction, the concentration of ion components in the groundwater increased. Halite, dolomite, and gypsum were dissolved, and calcite was precipitated.

PDF全文下载地址:

https://www.hjkx.ac.cn/hjkx/ch/reader/create_pdf.aspx?file_no=20190922&flag=1&journal_id=hjkx&year_id=2019

相关话题/水文 新疆 土木工程学院 新疆农业大学 水利

閹靛婧€韫囶偊鈧喎鍘ょ拹瑙勬暈閸愬奔绱伴崨锟�閿涘瞼鐝涢崡瀹犲箯閸欐牗婀扮粩娆掔カ閺傛瑨袙閸樺缂夌€靛棛鐖滈敍锟�