【作者】 林碧华； 马晓轩； 陶波；

【Author】 LIN Bihua~①MA Xiaoxuan~②TAO Bo~①(①Geological Construction Engineering Group Corporation of Guangdong Province,Guangzhou 510080) (②Guangzhou Tunnel Development Corporation,Guangzhou 510140)

【机构】 广东省地质建设工程集团公司； 广州市隧道开发公司；

【摘要】 长期以来,花岗岩总被认为是隔水体,通过近年来在粤东沿海花岗岩地区大量找水实践证实:花岗岩地区虽属贫水区,但在贫水区中存在着相对的富水带。花岗岩体中大量的构造和风化裂隙,为地下水的贮存和运移创造了良好的条件,花岗岩裂隙水已构成沿海地区人民生活用水的重要供水来源,对于一些小型项目及一般居民等用水量不大的需求来说,花岗岩风化裂隙水水量基本能满足其需求。位于汕头市潮南区的某变电站场区主要岩性为燕山三期花岗岩,抽水试验表明当水位降深达6m时,推测SK1和SK2的涌水量可达122.0m³·d^-1和206.0m³·d^-1。更多还原

【Abstract】 For a long term,granite has been considered as aquifuge.However,a plenty of water-detection programs carried in East Guangdong during the past few years have found that:there are still relative water-bearing areas distributing locally in granite,which is traditionally regarded as a water-poor stratum.Intensive amount of structural and weathered fractures and fissures in granite provide good conditions for the storage and migration of underground water,therefore,fissure water in granite has become one of the most important water supply sources for people’s everyday life in East Guangdong.Besides,it also meets roughly the water demands of small scale projects or residents.The granite underlying the transformer substation in Chaonan district,Shantou city primarily dates from Yenshan third episode,and steady pumping test was conducted and the results shows that when the water level drawdown reaches 6m,the evaluated amount of water inflow in drilling holes SK1 and SK2 can be respectively determined as 122.0m³·d^-1 and 206.0m³·d^-1.更多还原