建设项目扰动后土壤的抗蚀抗冲性能研究

Study on the Anti-Erosibility and Anti-Scourability of the Soil after Construction Project Disturbed

由建设项目造成水土流失已经日渐成为社会关注的焦点。本文对房地产、建筑厂房及道路等几种不同建设项目扰动下土壤抗蚀抗冲性能进行研究,研究表明:开发建设项目不同扰动模式下的土壤抗蚀性能存在差异,抗蚀性能由强到弱依次为:复垦土壤、开挖面土壤、碾压土壤及松散堆土;不同开发建设项目扰动的土壤抗蚀能力从高到低依次为:采石场、厂房、房地产和道路。在坡度、冲刷水量相同的条件下,不同开发建设项目的土壤抗冲刷系数不同在0.08~0.153 L•min/g,开发建设项目扰动减弱了土壤的抗冲性能。不同的扰动模式下碾压土壤抗冲性由大到小依次为:碾压后土壤、复垦土壤、开挖面土壤及松散堆积土壤;不同建设项目间土壤抗冲性由大到小依次为:采石场、房地产、厂房及道路。不同扰动模式下土壤抗蚀抗冲性能的研究结果,可为开发建设项目土壤侵蚀规律和水土保持预测提供基础依据。

The problem of soil erosion brought by development and construction projects is quite prominent in recent years. The study shows that: construction projects of different anti erodibility of soil under different disturbance modes, from strong to weak as follows: reclaimed soil, soil compaction, soil excavation and loose pile soil;the ability of disturbed soil anti erosion under different projects from high to low as follows: quarry, plant, and real estate and road. In slope erosion as same as water content, different development projects in different soil anti erosion coefficient 0.08~0.153 L•min/g, development and construction project disturbance weakened the soil anti-scourability. Under the different disturbance modes in descending order are following as: compacted soil compacted soil, soil, soil and soil excavation surface loose deposits;different construction projects between soil anti-scourability in descending order as follows: quarry, real estate, building and road. This paper is based on the development and construction projects of different disturbance modes of soil erosion resistance, to provide a scientific basis for prediction for the development and construction project of soil erosion and soil and water conservation.