生产建设项目弃渣(土)场水土流失特征与防治措施

Soil erosion characteristic and prevention measures in abandoned dreg(soil) field of production and construction

生产建设项目弃渣场种类繁多,弃渣成分、结构复杂,各类弃渣场的侵蚀形式、机制不尽相同,不易实施适宜的水土保持措施,致使弃渣场水土流失十分严重。通过介绍弃渣场存在的各类土壤侵蚀型式、归纳土壤侵蚀类型、分析岩土侵蚀特点,指出影响弃渣场土壤侵蚀的主要因素有排弃方式、组成物质、坡面以及堆积时间等。结合保证弃渣场安全稳定、恢复土地生产力的弃渣场水土流失防治目标,分析现有水土保持措施特点,提出健全弃渣场水土流失防治措施体系的建议,为弃渣场的水土流失防治提供科学依据。

The abandoned dreg sites of production and construction project is variety,the composition and structure of waste slag is complex,thus,different sites have different erosion form,the mechanism is not same too.The soil and water loss in abandoned dreg field is very serious,which leads hard to implement appropriate soil and water conservation measures.Based on the demonstration and classification of soil erosion type and its characteristics’ analysis,the main factors influenced soil erosion in abandoned dreg site were pointed out to be row of abandon way,material composition,slope and accumulation time etc.Combining with abandon dreg field water loss and soil erosion control goal,ensuring stability and safety of the abandoned dreg field,and restoring the land productivity,this paper analyzed the current soil and water conservation measures’ characteristics and gave advices in establishing and perfecting measures system of soil and water conservation in abandoned dreg field,which provided a scientific basis and guidance for controlling the soil and water loss.