极端降水条件下北京西山黑龙关泉响应研究  

Response of Heilongguan Spring to Extreme Precipitation in Xishan Mountain Area, Beijing

作　　者：唐春雷[1] 王桃良 王维泰[1] 赵春红[1] 

机构地区：[1]中国地质科学院岩溶地质研究所/国土资源部广西壮族自治区岩溶动力学重点实验室,广西桂林541004 [2]山西娘子关泉域管理处,山西阳泉045000

出　　处：《水文》2016年第6期70-75,共6页Journal of China Hydrology

基　　金：地质调查工作项目"北方岩溶区水文地质环境地质调查示范"(1212011220940);"大石河背斜岩溶水系统均衡研究与可持续开采量预测评价"(121237128100221);北京市岩溶地下水勘查评价工程(BJYRS-ZT)

摘　　要：2012年7月21日,北京房山区发生特大暴雨,暴雨从21日10时开始到22日2时结束。总降雨量达228mm,是北京60年一遇暴雨。暴雨后,黑龙关泉域岩溶水系统内的各种水资源要素都对其形成积极响应。依据岩溶地下水位统测、区域地质构造以及地貌条件综合分析黑龙关泉地下水系统补、径、排。研究黑龙关泉地下水系统对7.21洪水响应。从地下水位、地表河流、泉水水量、岩溶地下水化学分析7.21洪水前后变化情况。降水后,大石河流量最大达221m^3/s,水化学类型中带硫酸根离子的样品数显著增加。7月15日,实测黑龙关泉水流量为0.31m^3/s,7月21日上午实测为0.30m^3/s,25日分别对大石河的黑龙关泉口上、下游进行实测,获得泉水流量为3.47m^3/s,到29日降至2.34m^3/s,流量变化较为剧烈,与大石河水对岩溶水的补给密切相关。为进一步研究北京黑龙关泉域岩溶水的变化规律和岩溶水资源评价及合理开发利用提供了科学依据。A catastrophic storm occurred in Fangshan District of Beijing on 21 July, 2012, which is 60-year storm with the total rainfall of 228 mm.After this storm, the various water elements of karst water system in the Heilongguan Spring Basin an active response. This paper analyzed the recharge, runoff and discharge of the groundwater system of the Heilongguan Spring Basin based on karst groundwater level, local geological structure and geomorphical codition, and studied the response to the flood occurred on 21 July, 2012 by analyzing the change of the groundwater level, river flow, spring flow karst groundwater quality after the flood. After the rainfall, the flow reached 221 m^3/s on the Dashihe River, the number of samples with sulfate ion significantly increased. In the Heilongguan Spring Basin, the observed spring flow were 0.305m^3/s on 15 July and 0.30 m^3/s in the morning on 21 July, which reached 3.4734 m^3/s on 25 July and decreased to 2.34 m^3/s 29 July. The flow changed greatly,which is related to the supply from the Dashihe River to the karst water.

关 键 词：地下水系统 7.21洪水 泉水流量 水化学 

分 类 号：P641[天文地球—地质矿产勘探]