长兴岛碳酸盐岩裂隙岩溶水特征分析

长兴岛碳酸盐岩区占整个岛的44%,受降雨、岩性、构造等条件的影响,岩溶较发育,地下水资源较丰富,且水质较好,适宜作为饮用水水源。在收集大量基础地质资料,并结合现场调查、钻探、抽水试验成果,分析了从上至下5层岩溶带的发育特征、赋水性规律及补、径、排条件。同时考虑供水水文地质条件,进行了天然资源和开采资源概算,及成井条件、水质的分析评价。

THE KARST WATER CHARACTERISTICS OF CARBONATE ROCK FISSURE IN CHANGXING ISLAND

Carbonate zone covers 44% of the entire Changxing island. Affected by rainfall, lithology, structure and other conditions, karst is developed well in this region, and groundwater resources are abundant. Moreover, groundwater with good quality is suitable as a drinking water source. On the basis of a large number of basic geological data, combined with on-site investigation, drilling and pumping test results, this paper analyzes the characteristics of 5 karst belt layers from top to bottom, regularity of water abundance and the conditions of reinforcing, runoff and discharge. Taking into account the hydro-geological conditions of the water supply, the paper also estimates the natural and exploitation resources, and analysis well conditions and water quality.