天府新区夹关组地下水富集规律及开发利用认识

成都市天府新区的快速发展对区内地下水需求急剧增大,保护好地下水资源,合理开发是可持续发展的重要命题。在区内地下水资源贫乏的大环境下,对具有开采意义的夹关组裂隙孔隙层间水的含水层结构及地下水富集规律进行分析,圈定富水区块6.2 km2,计算地下水可开采量为6 800 m3/d,可供约4.25万城市居民生活用水。水量虽不能满足城市发展需要,但作为分散性的集中开采,一定程度上可以缓解区内地下水贫乏与其开采需求大的供需矛盾。最后,提出了合理开发利用的建议以及存在的问题。

Reflection on convergence regularity and utilization of groundwater in K2j group in Tianfu New District of Chengdu

The rapid development of Tianfu New District of Chengdu City dramatically increases the demand for groundwater in the region, and sound protection and rational development of groundwater resources are important for sustainable development. In the general situation of scarce groundwater resources, it is of significance to explore the pore-fissure water aquifer in K2j group and analyze the groundwater enrichment regularity. The analysis locates the water-rich area of 6.2 km² and the calculation shows that the exploitable groundwater is 6 800 m³/d，which can supply domestic water for about 42 500 urban residents. The located water amount cannot meet the need of urban development, but the dispersion of concentrated exploitation can ease the conflict between the scarce groundwater and the huge demand for groundwater extraction to a certain extent. Finally, the existing problems are pointed out and some advice on rational exploitation and utilization are put forward.