Abstract
Due to the specific natural conditions and high intensity of human activities in Shenzhen, the characteristics of water and soil erosion of Shenzhen are prone and frequent. There are no large rivers, lakes and reservoirs in Shenzhen, and the rainwater storage capacity is unsubstantial that result in some problems such as ecological environment deterioration, river siltation, drainage pipe network blockage, and aggravation of flood disasters. The work of soil and water conservation in Shenzhen is still grim. In this paper, the sediment under different soil and water conservation measures were measured based on long-term observation of typical road engineering, river engineering and pipeline engineering in Shenzhen. Then, the effect of soil and water conservation measures implemented in these typical engineering were analyzed. At last, the optimal proposals of soil and water conservation measures for these typical engineering were proposed. This research aims to provide data support for the formulation and modification of soil and water conservation technical specifications for production and construction projects in Shenzhen.
Highlights
As a typical representative of rapid urbanization, Shenzhen has started urban soil and water conservation work since the 1990s
The area of soil erosion decreased from 184.99 km2 in 1995 to 39.17 km2 in 2019 [1], that the area of soil and water loss caused by human activities is 33.86 km2, accounting for 86.44% of the total area of soil and water loss, which is a typical representative of urban soil and water loss because of its obvious man-made attribute
In the process of engineering construction, soil erosion of disturbed accumulation is greatly affected by vegetation, especially with the growth of vegetation, vegetation coverage is gradually increasing, soil and water conservation effect is gradually enhanced
Summary
As a typical representative of rapid urbanization, Shenzhen has started urban soil and water conservation work since the 1990s. There are few studies on the effect of soil and water conservation measures in urban production and construction projects. According to the sediment of disturbed accumulations in the typical production and construction projects under different soil and water conservation measures, there are relatively few studies on the optimal proposal of soil and water conservation measures. The effect of different soil and water conservation measures is analyzed to propose the optimal proposal for typical engineering.
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