Drainage ditch compound section wrapping type grass mat slope protection method for coastal reclamation areas

Abstract

The invention discloses a drainage ditch compound section wrapping type grass mat slope protection method for coastal reclamation areas. The method is performed according to the following steps: (1) constructing a drainage ditch compound section, wherein the drainage ditch compound section comprises a groove, groove side slopes, a bottomland, swale side slopes, slope tops and ridge side slopes; (2) using a grass mat to perform integrated wrapping coverage on the swale side slopes, the slope tops and the ridge side slopes and perform the integrated wrapping coverage on the groove side slopes and the bottomland by being vertical to the central line of the groove; and (3) nailing wood piles at the overlapped parts and the corners of the grass mat, arranging the wood piles in rows and columns at intervals of 1.5-2m and then binding iron wires on the wood piles in a diagonal crossing form. According to the drainage ditch compound section wrapping type grass mat slope protection method disclosed by the invention, the integral structure and the stability of the side slopes are improved, the erosion of the side slopes can be effectively reduced, and the occurrence of soil collapse and landslide phenomena can be prevented.

Description

technical field [0001] The invention relates to a grass mat slope protection method, in particular to a straw mat slope protection method with compound sections of drainage ditches in coastal reclamation areas, and belongs to the technical field of water and soil conservation engineering. Background technique [0002] Open ditch drainage is currently one of the main methods for desalination and alkalinization of saline-alkali land in coastal reclamation areas, but the collapse of drainage ditch is a common problem that affects and limits the effectiveness of drainage projects. Due to the impact of seawater infiltration during the tidal flat land formation process, the soil salt accumulation process in the tidal flat reclamation area precedes the soil formation process. The soil is mainly high-sodium salt silt soil with poor corrosion resistance. Severe soil erosion on the surface leads to instability of the slope, and it is easy to induce sliding or collapse of the slope soi...

AI Technical Summary

Problems solved by technology

[0002] Open ditch drainage is currently one of the main methods for desalination and alkaline improvement of saline-alkali land in coastal reclamation areas, but the collapse of drainage ditch is a common problem that affects and limits the effectiveness of drainage projects

Due to the influence of seawater infiltration during the tidal flat land formation process, the soil salt accumulation process in the tidal flat reclamation area precedes the soil formation process. The soil is mainly high-sodium salt silt soil with poor corrosion resistance. Severe soil erosion on the surface leads to instability of the slope, which is easy to induce sliding or collapse of the soil on the slope surface, and siltation channels

In the process of land consolidation in recent years, methods such as replacement of foundation soil, masonry slope protection, concrete slope protection, and vertical shafts on both sides of the drainage ditch have been used to protect the slope of the drainage ditch, but these methods have complicated construction procedures and consumable materials. Disadvantages such as high cost, and the protective effect on sandy soil slopes is not obvious

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