Trapezoidal spray-seeding method for easy-to-slip rock slope by using cotton soil matrix

Abstract

The invention provides a trapezoidal spray-seeding method for an easy-to-slip rock slope by using a cotton soil matrix. The trapezoidal spray-seeding method comprises the following steps that the slope height and the slope angle of the easy-to-slip rock slope are measured and calculated, and trapezoidal grading is carried out; honeycomb-shaped flexible templates with different heights are arranged according to different trapezoidal partitions; a fiber mixed mud matrix is sprayed by a high-temperature spraying gun to form a waterproof matrix layer on the surface; and a cotton soil spraying gun is adopted to spray the cotton soil matrix to form a cotton soil matrix layer. According to the trapezoidal spray-seeding method for the easy-to-slip rock slope by using the cotton soil matrix, trapezoidal partition spray-seeding is carried out on the easy-to-slip rock slope, and the economic cost and the environmental cost of soil dressing are reduced according to the geotropism of plant root growth; a honeycomb-shaped flexible template is adopted to prevent rainwater from being retained and disturbing a side slope, and the construction requirement for a side slope drainage ditch is lowered; the high-temperature spraying gun and the cotton soil spraying gun are adopted for combined spray seeding, a double-layer mixed matrix of a waterproof matrix and the cotton soil matrix is formed, better porosity, air permeability and water retention are achieved, and the repaired easy-to-slip rock slope is high in anti-scouring capacity, loose in matrix, high in stability coefficient and low in landslide risk.

Description

technical field [0001] The invention relates to the technical field of environmental protection and slope restoration, in particular to a trapezoidal spraying method for slippery rock slopes with a sponge soil matrix. Background technique [0002] Due to slope instability, landslide geological disasters occur every year in my country. At present, there are two main factors affecting the stability of slopes. One is internal factors, including the slope's own landform, rock and soil properties, rock and soil structure and structure, initial stress, etc. The second is external factors, including the action of water, earthquake, weathering of rock mass surface, engineering load and human factors. From the perspective of construction, the slopes to be repaired must be detected and analyzed to ensure that the internal factors are controllable and feasible. Construction is required to effectively control the occurrence of externally induced damage factors. According to typical exam...

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Problems solved by technology

However, judging from the actual engineering effect of slippery rock slopes, the existing technical means still have the following problems after the slope is repaired: ①The water retention performance is very poor, and a large amount of water is still needed for later maintenance; After sowing and repairing, it is easy to form ditches, and the soil is easy to compact; ③The organic matter and water in the repaired soil directly erode the surface of the original rock slope, which is likely to cause further landslides; ④In the process of high and steep slope treatment, It is often necessary to adopt blasting and mechanical slope repair methods, which affect the overall stability of the mountain, and the existing dangers of geological disasters such as collapse and landslides pose a serious threat to the safe production of human resources and engineering quality; ⑤The existing spraying methods require Build a large number of drainage ditches to avoid rainy weather. Since the drainage problem cannot be solved, large-scale rock slope instability and landslide problems are caused, which in turn destroys the existing restoration green landscape and increases the cost of secondary construction

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