A kind of anti-seepage-slope protection structure and its construction method in the water-fluctuating zone of the side slope in the reservoir area

Abstract

The invention discloses a reservoir area side slope hydro-fluctuation belt seepage proofing-slope protecting structure and a construction method thereof. The reservoir area seepage proofing-slope protecting structure comprises anchoring anchor rods, lattice beams, a sandy soil cushion layer, a one-way permeable material layer and a gravel filling layer; the lattice beams comprise transverse beam bodies and longitudinal beam bodies, and rectangular lattices are formed; the corresponding ends of the anchoring anchor rods are fixed to joints of the transverse beam bodies and the longitudinal beambodies of the lattice beams through anchoring pier heads, and the anchoring sections at the other ends are anchored into a stable rock layer under the side slope; and the one-way permeable material layer, the sandy soil cushion layer and the gravel filling layer are arranged in the lattices of the lattice beams from inside to outside. According to the reservoir area seepage proofing-slope protecting structure, side slope seepage proofing and side slope reinforcing are organically combined and cooperate with each other, and the significant effect on improvement of the reservoir area side slopestability is achieved. The construction method has the advantages that environmental protection is achieved, material acquisition is convenient, the processes are simple, the construction period canbe shortened on the premise that the construction effect is guaranteed, a large amount of capital is saved, and the high promotion and application value is achieved.

Description

technical field [0001] The invention relates to the field of slope engineering, in particular to an anti-seepage-slope protection structure and a construction method for a slope-fluctuation zone in a reservoir area. Background technique [0002] my country has a vast territory, complex natural conditions, and serious geological disasters. Especially in the southwest region, there are comprehensive types of disasters and a large number of disaster accidents. The most common ones are landslides, collapses, and debris flows. [0003] In the Three Gorges Reservoir area, the adverse effects on slope stability mainly come from surface water and groundwater, and the formation of surface water and groundwater is mainly due to rainfall and the rise and fall of reservoir water level. The impact of rainfall on slope stability is mainly to soften the rock and soil mass, reduce the strength parameters of the rock and soil mass, and cause changes in the water content of the rock and soil ...

AI Technical Summary

Problems solved by technology

At present, there are many construction methods for slope reinforcement, but the functions and forms of the reinforcement methods are relatively single, and the treatment effect also has certain limitations.

The previous reinforcement methods often paid attention to the reinforcement of the soil, but did not take into account the impact of water on slope stability under natural environmental conditions such as rainfall and drainage.

At the same time, the scope of application of the existing slope protection structure is relatively single. The traditional slope protection mostly uses rock accumulation, concrete or slope protection bricks. A slope protection structure that can prevent slipping and is not polluted to protect the slope

In addition, the existing protective structures are mostly protected against a certain influencing factor, without considering the coordinated protection of anti-seepage and reinforcement

For example, the application number 201811300628.8 "A Kind of Rock and Soil Slope Reinforcement Device" can play a good role in strengthening the slope, but the structure is complex, and the impact of slope anti-seepage is not considered; for example, the application number 201811471042.8 "A Kind of Slope anti-seepage design method” only adopts large-area laying of geomembrane, the applicable conditions are relatively harsh, the durability is low, and the slope is not reinforced; another example is the application number 201910066299.3 "GCL bentonite waterproof pad combined with geogrid grouting Seepage prevention and reinforcement of silt slope and its construction method" considers slope prevention and reinforcement at the same time, but it is only applicable to soil slopes. At the same time, the construction process is cumbersome and the economic cost is high

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