Desalting Experiment of Intensely Salt-affected Soil by Planting Rice in the Da an Paleochannel of the Songnen Plain;

Investigation on distribution of paleochannels and prospect of uranium metallogenesis in Erlian basin, Inner Mongolia;

Research on hydrogeologic prospecting for paleochannel sandstone-type uranium deposit;

It is suggested,that the Pliocene series of the Wulanhua basin is favourable for the development of paleochannels and must be the main prospecting target horizon possessing ore formation conditions for paleochannel sandstone type ura.

Sea(salt) water intrusion is a new environmental disaster in the south coastal plain of LaizhouBay, whose occurence and development are closely related to the widely-scattered ancient channels.

An ancient channel is a kind of territorial resources consisting of morphological-substantial bodies.

The construction technology of man-dig cast-in-place pile in the old channel in Longyan city is introduced.

Based on discussing the electrical features of stratum and hydrogeological conditions of the old channel of Liangzhu River, the paper has made the analysis and evaluation for the water supply significance of the pore water of stratum of the old channel, and the old channel area of Liangzhu River may be considered as the water supply resource of Shangzhi city.

In Jilin Oilfield,with the development of exploration technology,the old channel evolves into the preferred target for lithologic exploration because of its characteristics like good physical properties and high productivity.