摘要
采用流量指数衰减法、示踪试验法、地球化学法等3种方法,探讨重庆青木关岩溶含水介质的组合情况.通过流量指数衰减法计算发现,研究区地下水系统管道水和裂隙水分别占含水层水资源量的16.7%和83.3%,裂隙介质在地下水资源的调蓄中发挥着重要的作用;示踪试验表明,研究区发育有一条规模较大的岩溶管道,管道直径为数米级;水化学和δD,δ18 O值表明,研究区地下水系统的含水介质为裂隙和管道介质并存.研究认为,可用流量指数衰减法查清不同含水介质的构成,辅助以示踪试验法计算管道直径及相关的水文地质参数,并圈定流域范围,地球化学法作为以上2种方法的补充.
Methods of discharge recession equation,tracing test,and geochemistry were employed to investigate the karst aquifer media in the Qingmuguan groundwater system,a typical karst aquifer in the Paralleled Ridge-Valley of East Sichuan.Result of the discharge recession method showed that the media of karst were comprised of conduits and fissures with a rate of 16.7% and 83.3%,respectively.The fissure medium played a significant role in the regulation of groundwater resources.The tracing test showed that a large scale of karst conduits developed in the study site with a diameter of several meters.The methods of hydrochemistry andδD andδ18 O indicated that the media of karst conduits and fissures coexisted in the groundwater system.In conclusion,composition of different aquifer media can be defined by the equation of discharge recession,supplemented with tracing test for the calculation of the diameter of the karst conduit and the relevant hydrogeological parameters,and the identification of the watershed boundary.Geochemical method acts as a supplement of the two methods mentioned above.
出处
《西南大学学报(自然科学版)》
CAS
CSCD
北大核心
2016年第2期90-97,共8页
Journal of Southwest University(Natural Science Edition)
基金
重庆市国土资源和房屋管理局科技计划项目(CQGT-KJ-2014056)
国家科技支撑计划项目(2011BAC09B01)
国家自然科学基金项目(41103068)
中央高校基本科研业务费专项基金(XDJK2014A016)
重庆市院士专项基金(cstc2013jcyjys20001)
关键词
岩溶地下水
含水介质
管道
裂隙
川东平行岭谷
karst groundwater
aquifer media
conduit
fissure
the Paralleled Ridge-Valley of East Si chuan