典型岩溶地下河颗粒物运移及其对镉的影响

项目名称： 典型岩溶地下河颗粒物运移及其对镉的影响

项目编号： No.41202184

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 张强

作者单位： 中国地质科学院岩溶地质研究所

项目金额： 24万元

中文摘要： 西南岩溶地区大量有色金属开采导致岩溶地下河严重的重金属污染。国务院已经通过《全国地下水污染防治规划（2011～2020年）》。治理西南岩溶地下河重金属污染需要了解岩溶地下河重金属迁移机理。水体中重金属往往富集在颗粒物表面，研究岩溶地下河中颗粒物的迁移机理及其对重金属迁移的影响十分必要和迫切。岩溶含水层具有特殊的水动力和水化学性质，必然影响地下河颗粒物和重金属的迁移和沉淀过程，而此过程还不是很清楚，这也是当前国际岩溶领域的研究热点之一。本项目选择广西典型岩溶地下河，通过暴雨高频监测-分析法和地下河沉积物调查法、室内模拟法，采集水、悬浮物、沉积物，研究颗粒物的沉积过程、迁移过程、岩溶区颗粒物对重金属镉的吸附特征，从而探讨地下河颗粒物储存和迁移过程及其对镉的影响。为解决我国西南岩溶地区安全饮水问题、地下河重金属污染防治问题提供科学依据。

中文关键词： 岩溶地下河；颗粒物；重金属；来源；定时炸弹效应

英文摘要： In shouthwest of china, karst underground river have serious heavy metal pollution, because of Nonferrous metal mining. The State Council has passed " the national groundwater pollution prevention plan (2011 ~ 2020) ". So first we need to know the mechanism of heavy metal migration in karst underground river. Heavy metals in the water often focus in particle surface, so known the particle migration mechanism in the karst underground river and the influence of the migration of heavy metals are necessary and urgent.Karst aquifer which has the special water power and water chemical properties, will inevitably affect particles and heavy metal migration and precipitation process in underground river, and the process is not very clear, this is also the current international research hotspot about karst.This project selection typical karst underground river in guangxi, through the heavy rains high frequency monitoring-analysis and underground river sediment survey method、Simulation experiment, collect the water, suspended solids, sediment, for research the particle deposition process, the transfer process, adsorption characteristics of particles to heavy metal cadmium in karst area, so as to explore the underground particles storage and transfer process and its influence to the cadmium.This project wil provide the scie

英文关键词： Karst underground river；Particulate；heavy metal；source；time bomb