本文選題：柴達(dá)木盆地 + 德令哈斷陷��； 參考：《中國(guó)地質(zhì)大學(xué)(北京)》2017年碩士論文

【摘要】：柴達(dá)木盆地油氣資源豐富,但石油天然氣的探明程度很低。研究者對(duì)該地區(qū)做了大量的油氣勘查工作。巖溶的發(fā)育和分布情況對(duì)于油氣勘查有著極大的幫助,在本人之前未見(jiàn)對(duì)研究區(qū)巖溶各個(gè)情況的詳細(xì)調(diào)查。本人全面地收集了德令哈斷陷地區(qū)地質(zhì)、氣象、水文和水文地質(zhì)等資料。通過(guò)自2014年起,三年期間共計(jì)78天的實(shí)地野外調(diào)查,對(duì)柴達(dá)木盆地東部的死狼溝地區(qū)、天天礦業(yè)礦區(qū)、石灰溝地區(qū)、巴音河岸附近地區(qū)及尕海南山地區(qū)發(fā)現(xiàn)的11個(gè)巖溶露頭,14個(gè)大型溶洞的所在位置、巖溶強(qiáng)度、巖溶厚度、控制裂隙等因素進(jìn)行實(shí)地勘測(cè),拍照,并進(jìn)行詳細(xì)描述,取得了大量研究區(qū)內(nèi)地表巖溶發(fā)育情況的詳細(xì)資料,整理了研究區(qū)內(nèi)地表巖溶的分布位置。并通過(guò)所得資料對(duì)各個(gè)露頭的形成原因進(jìn)行詳細(xì)分析。通過(guò)研究區(qū)內(nèi)的野外調(diào)查,發(fā)現(xiàn)了三處巖溶泉露頭,并對(duì)三處泉水進(jìn)行了詳細(xì)的描述和照片采集。對(duì)巖溶泉進(jìn)行了取樣和水質(zhì)分析實(shí)驗(yàn),測(cè)定了取得巖溶水的化學(xué)成分,并對(duì)分析結(jié)果進(jìn)行分析,繪制水化學(xué)分類圖。分析結(jié)果表明,研究區(qū)內(nèi)的巖溶泉礦化度都不高,大部分為淡水,部分為微咸水。三處巖溶泉都屬于HCO3·Ca型地下水。水中的主要成分來(lái)源是柏樹(shù)山地區(qū)大理巖內(nèi)碳酸鈣和白云石的溶解。通過(guò)對(duì)鉆井巖芯的大量觀察對(duì)的兩哈斷陷附近的死狼溝、旺尕秀、尕海南山、柏樹(shù)山、穿山溝、宗務(wù)隆山等地區(qū)的地下巖溶做了詳細(xì)的描述,并標(biāo)明了地下巖溶發(fā)育程度較好的鉆井深度和巖層層位。選取保存比較完好的部分巖芯進(jìn)行取樣,通過(guò)孔隙度和滲透率室內(nèi)試驗(yàn)來(lái)研究其孔滲特征,得出了德令哈斷陷附近具有產(chǎn)生巖溶儲(chǔ)層條件的結(jié)論。本文對(duì)于德令哈斷陷附近的地表及地下巖溶及巖溶水的分布發(fā)育特點(diǎn)進(jìn)行了詳細(xì)描述。為將來(lái)對(duì)于該研究區(qū)巖溶儲(chǔ)層的探明和巖溶水的開(kāi)發(fā)和利用做基石。
[Abstract]:The Qaidam Basin is rich in oil and gas resources, but the degree of oil and gas exploration is very low. Researchers have done a great deal of oil and gas exploration in this area. The development and distribution of karst is of great help to oil and gas exploration. I have collected the data of geology, meteorology, hydrology and hydrogeology in Delingha fault area. Based on the field investigation of 78 days in the three years from 2014 to 2014, the paper studied the Deilanggou area in the eastern part of the Qaidam Basin, the mining area of Tiantian mining area and the Limegou area. The 11 karst outcrops and the location of 14 large caverns, karst intensity, karst thickness, controlling fissures and other factors found near the Bayin River and the Gahai Nanshan area were investigated, photographed, and described in detail. A large number of detailed data on the development of surface karst in the study area have been obtained, and the distribution of surface karst in the study area has been sorted out. Through the data obtained, the causes of each outcrop are analyzed in detail. Through field investigation in the study area, three karst springs were found, and the three springs were described and photographed in detail. The chemical composition of karst water was determined by sampling and water quality analysis experiments. The analysis results were analyzed and the classification map of water chemistry was drawn. The results show that the mineralization degree of karst springs in the study area is not high, most of them are fresh water and some are brackish water. All three karst springs belong to HCO 3 Ca type groundwater. The main source of composition in the water is the dissolution of calcium carbonate and dolomite in marble in the Boshushan area. Through a large number of observations of the drilling cores, the underground karst in the areas near the Liangha fault depression, such as the Dewolf ditch, Wanggaxiu, Gahai Nanshan, Boshushan, Chuanshangou, Zongwu Longshan, etc., are described in detail. The drilling depth and rock strata of underground karst are also indicated. Some well-preserved cores are selected for sampling and the porosity and permeability are studied by laboratory tests. The conclusion is drawn that there are karst reservoir conditions in the vicinity of Delingha fault depression. This paper describes in detail the distribution and development of surface and underground karst and karst water near the Delingha fault depression. It is the foundation stone for the exploration of karst reservoir and the exploitation and utilization of karst water in the future.
【學(xué)位授予單位】：中國(guó)地質(zhì)大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P642.25;P618.13

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