广州市花都区地下水应急水源地研究
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摘要
广州市花都区地下水资源较丰富,根据地下水的赋存条件,地下水类型划分为松散岩类孔隙水、碳酸盐岩裂隙岩溶水、红层孔隙裂隙水、层状岩类裂隙水及块状岩类裂隙水。其中供水意义较大的地下水类型为松散岩类孔隙水和碳酸盐岩裂隙溶洞水。依据应急水源地圈定依据,圈定四处地下水应急水源地,对潜在供水能力、水质及地下水开采风险进行评价。结果显示:各应急水源地地下水水质总体良好,经相应处理后可满足应急供水水质需求,地地下水开采风险主要有地质灾害风险、地下水污染风险及开采技术风险。应急状态下,各水源地地下水总允许开采资源为72 119.13 m~3/d,可满足花都区63.86%常住人口的应急供水。
Guangzhou huadu district is rich in groundwater resources. According to the occurrence conditions of groundwater, the groundwater type is divided into loose rock pore water, carbonate rock fracture karst water, red layer pore fissure water, layered rock fissure water and block rock fissure water. The types of groundwater with a significant water supply significance are loose rock pore water and carbonate rock fissure cave water. According to the emergency water source delineation basis,the four groundwater emergency water sources are delineated to evaluate the potential water supply capacity, water quality and groundwater exploitation risk. The results show that the groundwater quality of each emergency water source is generally good, and it can meet the needs of emergency water supply after corresponding treatment. The risk of groundwater exploitation mainly includes geological disaster risk, groundwater pollution risk and mining technology risk. Under emergency conditions, the total allowable exploitation of groundwater in each water source is 72 119.13 m~3/d, which can meet the emergency water supply of 63.86% of the resident population in Huadu District.
Guangzhou huadu district is rich in groundwater resources. According to the occurrence conditions of groundwater, the groundwater type is divided into loose rock pore water, carbonate rock fracture karst water, red layer pore fissure water, layered rock fissure water and block rock fissure water. The types of groundwater with a significant water supply significance are loose rock pore water and carbonate rock fissure cave water. According to the emergency water source delineation basis,the four groundwater emergency water sources are delineated to evaluate the potential water supply capacity, water quality and groundwater exploitation risk. The results show that the groundwater quality of each emergency water source is generally good, and it can meet the needs of emergency water supply after corresponding treatment. The risk of groundwater exploitation mainly includes geological disaster risk, groundwater pollution risk and mining technology risk. Under emergency conditions, the total allowable exploitation of groundwater in each water source is 72 119.13 m~3/d, which can meet the emergency water supply of 63.86% of the resident population in Huadu District.
引文
[1]广州市花都区水务局.广州市花都区2017年度水资源公报.2017.
[2]广东省地质矿产局环境地质研究所.广东省广花隐伏岩溶盆地地下水资源及环境地质问题预测研究报告[R].1998.
[3]广东省地质局水文工程地质一大队.珠江三角洲经济区应急水源地地下水资源勘查评价报告[R].2009.
[4]供水水文地质手册.地质出版社.1990.
[2]广东省地质矿产局环境地质研究所.广东省广花隐伏岩溶盆地地下水资源及环境地质问题预测研究报告[R].1998.
[3]广东省地质局水文工程地质一大队.珠江三角洲经济区应急水源地地下水资源勘查评价报告[R].2009.
[4]供水水文地质手册.地质出版社.1990.