The Field Flume Experiment of Drainage Channel Erosion Resistance in the Pingluo Saline Land of Ningxia

This paper use flume experiments to analyze the stability of the drainage channels,the two different channels were paved by Baijiangtu and sand in the saline land of Ningxia,respectively.From the experiments,we can draw conclusions that the channel which paved by Baijiangtu has a strong resistance to water flow erosion.The minor change of the channel erosion and deposition is due to the repeated wetting and air drying.The sand is easy erosion by water flow,so the channel which paved by the sand has a large deformation in the longitudinal and transverse under the water flow.But the mud-gravel composed of the Baijingtu on the channel bed restrict the further longitudinal deformation.Comparing the two test we can draw a conclusion that the Baijiangtu could be used to construct the drainage channel in the Pingluo saline land of Ningxia,if the wetting and air drying problems can be solved.