地质科技情报
地質科技情報
지질과기정보
GEOLOGICAL SCIENCE AND TECHNOLOGY INFORMATION
2009年
6期
89-93
,共5页
刘延锋%江贵荣%靳孟贵%李旭峰
劉延鋒%江貴榮%靳孟貴%李旭峰
류연봉%강귀영%근맹귀%리욱봉
焉耆盆地%环境同位素%地下水补给%δ(D)%δ(18O)
焉耆盆地%環境同位素%地下水補給%δ(D)%δ(18O)
언기분지%배경동위소%지하수보급%δ(D)%δ(18O)
Yanqi Basin%environmental isotope%groundwater recharge%δD%δ~(18)O
根据焉耆盆地开都河水及其两岸地下水中的氢氧稳定同位素资料及氘过量参数(d)值,分析了焉耆盆地内不同水体的δ(D)、δ(~(18)O)和d值的分布规律,并得到地下水的主要补给来源及其与开都河水的相互作用关系;地下水的δ(D)在-87.60‰~-61.82‰间,δ(~(18)O)在-10.90‰~-9.73‰间;开都河水的δ(D)在-71.95‰~-58.58‰间,δ(~(18)O)在-9.57‰~-8.64‰间.结果表明:焉耆盆地内地下水和地表水同源于山区的降水和冰雪融水,且经历了较强的蒸发作用;地下水与地表水之间的直接水力联系较弱,深层地下水主要接受开都河水在洪积扇区的入渗补给,浅层地下水主要接受河流引水灌溉入渗;不同深度地下水之间的水力联系较为密切,为统一的地下水系统.
根據焉耆盆地開都河水及其兩岸地下水中的氫氧穩定同位素資料及氘過量參數(d)值,分析瞭焉耆盆地內不同水體的δ(D)、δ(~(18)O)和d值的分佈規律,併得到地下水的主要補給來源及其與開都河水的相互作用關繫;地下水的δ(D)在-87.60‰~-61.82‰間,δ(~(18)O)在-10.90‰~-9.73‰間;開都河水的δ(D)在-71.95‰~-58.58‰間,δ(~(18)O)在-9.57‰~-8.64‰間.結果錶明:焉耆盆地內地下水和地錶水同源于山區的降水和冰雪融水,且經歷瞭較彊的蒸髮作用;地下水與地錶水之間的直接水力聯繫較弱,深層地下水主要接受開都河水在洪積扇區的入滲補給,淺層地下水主要接受河流引水灌溉入滲;不同深度地下水之間的水力聯繫較為密切,為統一的地下水繫統.
근거언기분지개도하수급기량안지하수중적경양은정동위소자료급도과량삼수(d)치,분석료언기분지내불동수체적δ(D)、δ(~(18)O)화d치적분포규률,병득도지하수적주요보급래원급기여개도하수적상호작용관계;지하수적δ(D)재-87.60‰~-61.82‰간,δ(~(18)O)재-10.90‰~-9.73‰간;개도하수적δ(D)재-71.95‰~-58.58‰간,δ(~(18)O)재-9.57‰~-8.64‰간.결과표명:언기분지내지하수화지표수동원우산구적강수화빙설융수,차경력료교강적증발작용;지하수여지표수지간적직접수력련계교약,심층지하수주요접수개도하수재홍적선구적입삼보급,천층지하수주요접수하류인수관개입삼;불동심도지하수지간적수력련계교위밀절,위통일적지하수계통.
Based on the environmental isotope features of hydrogen and oxygen and deuterium excess (d) of groundwater and Kaidu River in Yanqi Basin, this paper analyses the spatial characteristics of δD、δ~(18)O and d in different water,which may indicate the main sources of groundwater and the interaction between groundwater and Kaidu River according to the δD vs. δ~(18) O graph. The δD varies from - 87.60‰ to-61.82‰ and the δ~(18) O, from -10.90‰ to -9.73‰ in groundwater. While the δD ranges from-71.95‰ to -58.58‰ and the δ~(18)O, from -9.57‰ to -8.64‰ in stream water. The results indicate that the groundwater and stream water are mainly derived from the snow melting water and rainfall, and the source water is evaporated a long time before the water infiltration to the groundwater. There is a leak interaction between groundwater and surface water. The groundwater in deep aquifer is mainly recharged by the intensive infiltration of stream water in the proluvial fan, and the groundwater in shallow aquifer mainly derives from irrigation water derived from Kaidu River in plain area. The groundwater in porous Quaternary formation can be regarded as one whole groundwater system because of the close interaction between groundwater and surface water.