雷州半岛火山岩的水文地质特征与富水规律

根据雷州半岛火山岩的地质环境和水文地质条件，叙述了该地区火山岩地下水含水层特征以及地下水的补给、径流、排泄条件。根据不同含水层的岩性、泉水出露和钻孔出水量，分析了该区火山岩的富水性及富水规律，为城镇居民生活和工农业生产供水提供科学依据。

HYDROGEOLOGICAL PROPERTY AND LAWS OF WATER ABUNDANCE OF THE VOLCANIC ROCKS IN LEIZHOU PENINSULA

Based on the geological environment and hydrogeological conditions of the volcanic rocks in Leizhou Peninsula, the characteristics of groundwater aquifer and the condition of groundwater recharge, runoff and discharge in this area are discussed. According to the lithology of different aquifers, the outcrop of spring, and the water-yield capacity of drilled holes, the property and laws of water abundance of the volcanic rocks in Leizhou Peninsula are analysed. The following suggestions are put forward from the view of finding water: (1)The large capacity of consistent water near the caldera indicates the huge opportunity to form a well, which can be utilized as the water supply source for middle-or small-size enterprises and residential area.(2)In the terrace area of basalt, it is feasible to drill well at the levels from 80 to 180 meters in the south of Leizhou Peninsula, or at the levels from 60 to 130 meters in the north of Leizhou Peninsula, which can yield water ranging from medium to abundant capacity and can be utilized as irrigation source of cash crop. In the center of palm-shaped area, it is justified to drill deep well and dig large well for water utilization.(3)At the edge of terrace, the water capacity in the zone of outcrop of spring is abundant, where the ground water can be exploited by means of digging large well or reaming spring in the places with advantageous terrane.