开发建设项目水流失量预测及其方法探讨

开发建设项目建成后往往使地表大面积硬化，从而改变项目区入渗、蒸发、地表径流量和特性。针对开发建设项目水土保持方案中仅预测土壤流失量的现状，认为应开展水流失量预测。鉴于水流失量预测及其危害分析工作过去尚未开展、可供参考的研究成果较少的情况，提出了开发建设项目水流失量预测范围、单元划分的原则及预测方法和预测参数的获取途经等。

Approach to Water Loss Prediction and Its Method of Development and Construction Projects

Usually the surface would be hardened in a large area after completion of development and construction projects.Thus,it has changed the volume and characteristics of infiltration,evaporation and surface runoff of the project area.It considers that it should conduct water loss prediction in the light of the present status of only predicting soil loss in a soil and water conservation plan of development projects.It puts forward the prediction range of water loss,principles of element division,methods of prediction and the ways of getting parameters of a development project in view of water loss prediction and jeopardize analysis have not developed yet and only few research achievements can be used for reference.