A Soil and Water Conservation Method Suitable for Plain River Network Area

Abstract

The invention discloses a water and soil conservation method suitable for plain river network areas. The water and soil conservation method comprises the steps of arranging diversion ditches along the horizontal direction of the downstream water at the slope top of a riverway and the longitudinal direction of an upstream water body on the slope surface of the riverway; arranging a preliminary sedimentation tank at the longitudinal and horizontal intersection of the diversion ditches; arranging a silt deposition well in a water body in the marginal bank of the riverway; pumping silt in the silt deposition well to a piezoelectric movable silt dehydrating device by using a submersible sludge pump to carry out dehydration and drying treatment; conveying the dehydrated and dried silt to the working surface of a protective slope of the riverway through a belt conveying device; and after leveling the silt conveyed into grass planting dies, concrete grillages and self-locking ecological I-shaped bricks, paving planting soil on the upper layer of silt, and laying an ecological grass blanket on the planting soil or mixing ecological grass seeds into the planting soil to finish the construction of an ecological protective slope. By using the water and soil conservation method, the problem that an ecological system of a river bed is damaged because the riverway is dredged by cutoff can be avoided; the silt returns to a slope in situ, and a silt resource is recycled; and the slope surface of the riverway is subjected to ecological slope protection treatment, so that water and soil loss is reduced.

Description

technical field [0001] The invention relates to an ecological engineering technical method for water and soil conservation in plain river network areas. technical background [0002] The main way of soil erosion in the plain river network area is that the rainfall runoff carries the surface mud and confluences into the river channel; the river channels in the plain river network area are mostly small and medium-sized channels, which are characterized by gentle, narrow and shallow slopes, and the river bottom is prone to surface siltation ; The river slopes in plain river network areas are generally of natural vegetation type, with low water and soil conservation capacity. With the acceleration of river slope runoff, slope water and soil loss is the main source of sedimentation at the river bottom. [0003] River channel dredging generally adopts the operation method of dredging by breaking the flow and transporting it abroad; in the plain river network area, due to the small...

AI Technical Summary

Problems solved by technology

[0003] River channel dredging generally adopts the operation method of dredging by breaking the flow and transporting it abroad; in the plain river network area, due to the small cross-section of the river channel and the small amount of silt produced, the traditional operation method of dredging and transporting the sediment by breaking the flow has a relatively high engineering investment; Small river ecosystems are fragile, and relatively stable ecosystems are easily disturbed and damaged by dredging and silting operations.

Images