| 山西太原西山汾河二库的泉域归属及其渗漏量计算 |
| |
| 引用本文： | 郭芳芳,梁永平,王志恒,申豪勇,赵春红.山西太原西山汾河二库的泉域归属及其渗漏量计算[J].中国岩溶,2018,37(4):493-500. |
| |
| 作者姓名： | 郭芳芳 梁永平 王志恒 申豪勇 赵春红 |
| |
| 作者单位： | 中国地质科学院岩溶地质研究所/自然资源部、广西岩溶动力学实验室，广西 桂林 |
| |
| 基金项目： | 中国地质调查局地质调查项目（DD20160242)，国家自然科学基金面上项目(41672253) |
| |
| 摘 要： | 山西省汾河二库是建于汾河中上游的一座大型水库。由于水库处于晋祠兰村泉域交界地带的碳酸盐岩河段，水库蓄水并淹没了天然条件下出流的悬泉寺泉群，造成库区岩溶水文地质条件发生根本性改变，直接影响到泉域岩溶水的水资源评价、开发管理和以泉水复流为目标的生态修复的措施制定。本文针对汾河二库修建后的以下两个问题开展了讨论。第一，利用最新调查与勘探资料分析二库修建对岩溶水文地质条件的影响，并对二库库区的泉域归属问题进行了划定，认为悬泉寺泉水的出流受控于汾河河谷内向西倾斜的下奥陶统区域相对隔水层的阻水作用，汾河二库蓄水水位提高近40 m，天然条件下挟持于晋祠-兰村泉域间相对独立循环的悬泉寺泉域降落漏斗被“充满”，泉水消失，形成对岩溶地下水渗漏反补给，水库渗漏水量通过中奥陶统主要进入晋祠泉域，汾河二库以寺头-下槐间下奥陶统出露的地段为界，下槐泉以上划归晋祠泉域，下槐泉以下则划归兰村泉域；第二，利用二库上游寨上水文站、下游的上兰村水文站资料和二库蓄水水位系列资料，由均衡法建立了二库蓄水水位与渗漏量之间的非线性方程，并据此预测，当二库水位提高至905.7 m时的渗漏量为2.862 m3·s-1，而对兰村泉域岩溶水及山前西张水源地的补给量有限。
|
| 关 键 词： | 汾河二库 泉域边界 均衡法 水位 |
Attribution of spring fields and seepage calculation of Fenhe second reservoir in Xishan, Taiyuan, Shanxi Province |
| |
| GUO Fangfang,LIANG Yongping,WANG Zhiheng,SHEN Haoyong and ZHAO Chunhong.Attribution of spring fields and seepage calculation of Fenhe second reservoir in Xishan, Taiyuan, Shanxi Province[J].Carsologica Sinica,2018,37(4):493-500. |
| |
| Authors: | GUO Fangfang LIANG Yongping WANG Zhiheng SHEN Haoyong and ZHAO Chunhong |
| |
| Institution: | Institute of Karst Geology，CAGS/ Key Laboratory of Karst Dynamics ，MNR&GZAR，Guilin，Guangxi |
| |
| Abstract: | Fenhe second reservoir of Shanxi Province is a medium-sized reservoir built in the middle and upper reaches of Fenhe river. Because the reservoir is located in the section of carbonate river which is the junction of the spring fields of Jinci and Lancun, the reservoir impounds and inundates the Xuanquansi spring group that flows out under natural conditions , resulting in a fundamental change in the karst hydrogeological conditions in the reservoir area. This directly affected the water resources evaluation, development and management and the measures planed for ecological restoration aimed at spring re-flow. This article discusses the following two issues related to the construction of Fenhe river second reservoir. First, using the latest survey and exploration data to analyze the impacts of the construction of the second reservoir on the karst-hydrogeological conditions and delimit the spring field in the second reservoir areas. It is believed that the outflow of Xuanquansi spring is controlled by the semi-aquitard of the lower Ordovician inclined to the west within the Fenhe river valley. The water level of the second reservoir has been elevated by nearly 40 m and filled the falling funnel in the Xuanquansi spring area which is a relatively independent circulation between the Jinci and the Lancun spring under natural conditions. The spring disappeared and it forms a reverse supply to the karst groundwater. The water seepage of the reservoir mainly flows into the Jinci spring domain through the middle Ordovician. The Fenhe second reservoir is bounded by the outcrop of the lower Ordovician between the Sitou and Xiahuai. The reservoir area above the Sitou-Xiahuai is assigned to Jinci spring field and the reservoir area below the Xiahuai is assigned to Lancun spring field. Second, by using the hydrological data of the reservoir's upstream and downstream and series of water level data of the second reservoir, a nonlinear relationship between the second reservoir's water level and the amount of seepage is established by the equilibrium method. Based on this, when the water level of the second reservoir rises to 905.7 m, the seepage amount would be 2.862 m3·s-1. However, the supply of Lancun spring karst water and Piedmont Xizhang source water is limited. |
| |
| Keywords: | Fenhe second reservoir spring field border equilibrium method water level |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国岩溶》浏览原始摘要信息 |
| 点击此处可从《中国岩溶》下载免费的PDF全文 |
|
