六盤山地區(qū)泉水地球化學(xué)特征
發(fā)布時間:2018-10-12 09:32
【摘要】:根據(jù)六盤山地區(qū)泉水的化學(xué)組成和氫、氧同位素數(shù)據(jù),討論了該區(qū)地下水的化學(xué)類型、成因及其動態(tài)變化特征。2012年11月和2014年7月在六盤山地區(qū)采集10處泉水樣品,氫氧同位素由液態(tài)水同位素分析儀測定,離子組分濃度由離子色譜和化學(xué)滴定法測定。水樣的TDS范圍為218~27 508 mg/L,δ~(18) O和δD值分別為-12.0‰~-8.5‰,-88.5‰~-61.3‰。δ~(18) O和δD指示該區(qū)泉水來源于大氣降水,并受水循環(huán)條件及水巖反應(yīng)程度的影響。根據(jù)舒卡列夫分類法,所采水樣可劃分為10種水化學(xué)類型,受含水層巖性控制,寧南地區(qū)的水化類型主要為SO_4-Na型,渭北西部地區(qū)的水化類型主要為HCO_3-Ca·Mg型。兩次所采水樣的離子濃度顯示多數(shù)水樣點(diǎn)的HCO_3~-具有夏高冬低的季節(jié)性變化特征,千川村(QC)、雙井村(SJ)等因含水層賦存環(huán)境較封閉,受降水干擾小;硝口村(XKH)泉水的離子毫克當(dāng)量比值變幅最大,說明該泉點(diǎn)水巖反應(yīng)程度變化較大,易受斷層帶活動的影響。研究結(jié)果確定了六盤山地區(qū)水文地球化學(xué)背景和水的來源,為該區(qū)流體地球化學(xué)地震監(jiān)測、預(yù)測提供了背景資料。
[Abstract]:Based on the chemical composition and hydrogen and oxygen isotopic data of spring water in Liupanshan area, the chemical types, origin and dynamic variation characteristics of groundwater in this area are discussed. Ten spring water samples were collected in November 2012 and July 2014 in Liupanshan area. Hydrogen and oxygen isotopes were measured by liquid water isotopic analyzer and ion component concentrations were determined by ion chromatography and chemical titration. The TDS range of water samples is 2188508 mg/L, 未 ~ (18) O and 未 D values are -12.0 鈥,
本文編號:2265632
[Abstract]:Based on the chemical composition and hydrogen and oxygen isotopic data of spring water in Liupanshan area, the chemical types, origin and dynamic variation characteristics of groundwater in this area are discussed. Ten spring water samples were collected in November 2012 and July 2014 in Liupanshan area. Hydrogen and oxygen isotopes were measured by liquid water isotopic analyzer and ion component concentrations were determined by ion chromatography and chemical titration. The TDS range of water samples is 2188508 mg/L, 未 ~ (18) O and 未 D values are -12.0 鈥,
本文編號:2265632
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