Hebei Luquan City Huangbi Village Area Of Groundwater Vulnerability Research

Groundwater is a very valuable resource, and it is the only stable water source in mostnorthern part of China. So, it is very important and urgent for us to protect groundwaterresource.The researched area with intensive population, big water consumption of agriculturalproduction and living, great influence to groundwater environment is located inHuangbizhuang district, Luquan city, Hebei province. The area is also located in the NorthChina Plain, where groundwater cone has been formed due to excessive mining in recentyears. The function of Huangbizhuang reservoir in researched area is mainlyflood-prevention, next urban water, irrigation, power generation and other hydraulicengineerings. More than7000,000people of25counties in downstream is relying thisreservoir. The provincial capital of Hebei province---Shijiazhuang city is located in thesoutheast of the district, and most domestic water comes from Huangbizhuang reservoir.Water quality and the environment of surrounding area directly affect the safety of thecapital. As the main water source area for villages and towns in Shijiazhuang city, if thegroundwater in the area is polluted, it will affect local agricultural production and economicdevelopment. What’s more, it can pollute water source of drinking water in Shijiazhuangcity, thus result in serious ecological water quality problems. So groundwater protection inresearched area is very important。Through vulnerability evaluation of groundwater can beconcluded that regional groundwater vulnerability to pollution, so as to formulatecorresponding measures to protect the groundwater.Through the data collecting of researched area, on the basis of field exploring,thoroughly researching groundwater vulnerability evaluation both at home and abroad, andrelying DRASTIC model target system, the author has analyzed and learned vulnerabilityevaluation method by experimenting and data collecting. According to seven indicators ofDRASTIC: groundwater depth (D), net recharge (R), media type of aquifer (A), media typeof soil (S), topography slope (T), media type of vadose zone (I) and fluid conductivity ofaquifer (C); combing with the following features of Huangbizhuang district: largepopulation, developed agriculture, life and production water consumption is large, andhaving a great influence to groundwater; basing on DRASTIC model, we replaceinsignificantly different topography slope (T) in researched area by population density (P), and in the end we establish evaluation index system, namely DRASPIC model evaluationsystem. On the basis of local geological landform, hydrogeololgy, soil, according to theevaluation standard, we have got the vulnerability scores of researched area. Throughweighted processing to superposited analysis result of seven factors, the author hasadvanced spatial analysis by using Mapgis software, and has obtained groundwatervulnerability zoning maps. According to vulnerability scoring range, the groundwatervulnerability in researched area is divided into four grades: higher vulnerability, highvulnerability, low vulnerability, and lower vulnerability.Combing practical situation of researched area, the paper has replaced the factors inDRASTIC model, thus we have obtained DRASPIC evaluation system. The paper hasassessed possibility of potential groundwater pollution in researched area, which canremind people of groundwater protection awareness in the process of exploitation andutilization, so that we can monitor and manage the groundwater district of highvulnerability on emphasis.