Slide sand-slope deep sand-fixation method

Abstract

A deep sand-fixing method for a sand-sliding slope, the steps of which are: adopting the deep sand-fixing method of the flower tube miniature tree root pile to carry out the deep sand-fixing design of the sand-sliding slope, that is, drilling a hole vertically to the deep part of the sand slope on the sand slope that needs to be sand-fixed , insert a miniature flower tube into the hole, and inject high-pressure clay, silt or cement, and fine sand slurry into the flower tube. The slurry is injected through the small holes around the flower tube to form a root-like pulp vein, which uses its own bonding And adsorption, hold the sand tightly to achieve the purpose of sand consolidation. The invention can effectively fix the sand slide slope and solve the harm caused by the sand slide slope.

Description

technical field [0001] The invention relates to a method for fixing sand in the deep part of a sand slide slope. Background technique [0002] Sand slide is a special type of disaster in mountainous areas. Sliding sand slope refers to the natural process of high and steep slopes. Under the action of strong physical weathering, a large number of sand particles and debris are formed, slide under the action of their own weight, and accumulate at the foot of the slope to form a conical slope. A typical sand sliding slope must have three major elements: sand source area, sliding area and accumulation area, such as figure 1 shown. [0003] The biggest feature of the sand slope is the loose structure, the cohesion between the particles is very small, which can be called "a plate of loose sand". As long as the foot of the sand slope is excavated, or the vegetation on the surface of the sand slope is destroyed, the sand slope will slide violently, endangering the safety of roads, ...

AI Technical Summary

Problems solved by technology

For a relatively complex disaster-causing system, it is obviously not perfect to use a simple prevention and control project, and there are the following problems: (1) The design theory of the sand retaining wall has not been established, resulting in the design of the sand retaining wall. The height and cross-sectional size cannot be accurately determined, and the design of the sand retaining wall today is arbitrary. As a result, most of the existing sand retaining walls are not high enough, and the sand overflows the top of the wall and slips into the road, such as figure 2 As shown; a small number of walls have been repaired high, and the structure is extremely unreasonable, which not only results in high engineering investment, but also cannot guarantee the safety; (2) the current sand retaining wall is designed to be built in the sand source area of ​​the sand slide slope It has basically stabilized, and there is no obvious sand supply to the sliding area and accumulation area of ​​the sand slope.

If the sand source area still has a lot of material to provide to the sand slope, what should be done if the sand retaining wall cannot be used to stop it? The existing sand slope prevention and control project has not proposed other sand slope prevention and control methods; (3) if excavation is required What should be done if the road, railway and other engineering buildings are repaired on the foot of the sandy slope, which will cause violent activities of the sandy slope? The existing sandy slope prevention method has not proposed solutions; Carry out surface sand consolidation and rapid vegetation recovery, and the prevention and control of the existing sand slide slope has not been solved

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