Yinchuan city's groundwater resources are abundant,but water pollution is serious,not only exacerbated the crisis of water resources and the contradiction between supply and demand.At the same time,directly influenced the industrial and agricultural production,destruction of the ecological environment,and further a threat to human health.Based on the analysis of groundwater pollution investigation and sampling in Yinchuan City,using DRASTIC model,the analysis and research on the groundwater vulnerability in Yinchuan City,and antifouling performance assessment and zoning of groundwater,can help decision makers and managers for groundwater management strategy and policy,the limited funds and manpower directly into the vulnerable pollution in the area,to maximize the protection of groundwater resources.

Diversion canal seepage is one of problems that solve urgently of development and utilization of water resources in Yinchuan plain.Lining rate is low of different diversion channel,it is the main reason causing of serious leakage and seepage control performance is poor.So the improvement of the diversion channel anti-seepage performance is the key to solve the seepage problem.However,the canal seepage volume accounted for almost 60% of Yinchuan plain groundwater recharge.Channel seepage prevention performance lead to its recharge underground water reduction,and leads to have a significant impact on groundwater flow state of Yinchuan plain.In this paper,based on the comparative analysis of different seepage control scheme,research in diversion channel seepage of groundwater effect countermeasure in Yinchuan plain,improve water channel anti-seepage performance,improve irrigation water utilization rate,increase water supply capacity,and alleviate the contradiction that use water,lower the groundwater levels,mitigate and prevent soil salinization.

At present,there is a lot of methods of CO2 geological sequestration,but geological sequestration has been considered one of the most promising ways.Compared with other methods,characteristics of the storage method are relatively safe,reliable,and wide range,with small side effects.Research shows that the geological storage reservoir which is favorable,elaborate design and proper management can store the injected CO2 of 99% for more than 1000 years.In order to cope with the challenge of global climate change,The main western developed countries are doing CCS projects research.Acording to the collected the research data of CCS,authors summarize the current research status of CO2 geological sequestration and put forward some inspiration for CO2 geological storage in China.

重点介绍了1999年以后地震、电法、探地雷达发展的某些主要方面及发展趋势.

地面核磁共振技术是目前世界上仅有的可用于直接寻找地下水的技术.自从20世纪80年代俄罗斯开发成功该技术以来,资料采集、处理、解释技术在不断的发展.在综述这些新发展后,对该项技术在我国的应用进行了讨论.