RU2236509C1 - Anti-landslide structure - Google Patents

Abstract

FIELD: building structures, particularly ones for slopes stabilization.

SUBSTANCE: anti-landslide structure includes vertical walls fixed into stable lower stratum located under landslide area and arranged parallel to landslide direction. Vertical walls are made as drainage-buttress installations forming trapeziums in plane. Sides of vertical walls have corbels. Lower and upper wall parts are made of heavy concrete. Medium part thereof is formed of filtering hydraulic concrete. Lower wall part is fitted into stable ground. Upper well part protects hydraulic concrete against atmospheric water. Intermediate wall part has a number of drain pipes located in lower section thereof.

EFFECT: increased slope stability, improved safety during ante-landslide structure building.

2 dwg

Description

The invention relates to the construction and can be used to stabilize landslides on the slopes.

Numerous types of trench drainages are known for copying and removing groundwater from the body of a landslide (see Braslavsky VD Anti-landslide structures on roads, Moscow: Transport, 1985, Fig. 4, p. 130).

The disadvantage of these structures is that the drainage backfill is made of discrete materials that filter the water, however, when the soil layers move, it does not provide significant resistance to shear. Therefore, the drainage filling is separated from the drainage channels and turns into a moisture accumulator.

Known buttress structures in the form of various stops that hold the soil from displacement due to drag and friction on the lateral surfaces (see Braslavsky VD Anti-landslide structures on roads, Moscow: Transport, 1985, p. 195).

The disadvantage of such structures is the difficulty of draining soils, which in a water-saturated state can be forced into intervals or crawl through obstacles.

The closest analogue in technical essence and the achieved result is an anti-landslide structure, including vertical walls, pinched in stable soils underlying the landslide, located along the landslide (see SU 990972 A, E 02 D 29/02, 01/25/1983).

The disadvantages of this structure are also small resistance to shear (the friction forces of water-saturated soil on the side surfaces of the walls are small), the location of the broadening along the length of the walls, which will be immediately destroyed by a landslide.

The objective of the invention is to increase the stability of the slope and ensure the safety of work during the construction.

The problem is solved due to the fact that in the anti-landslide structure, including vertical walls, pinched into the underlying landslide, stable soils located along the landslide, according to the invention, the vertical walls are made in the form of drainage-buttress structures trapezoidal in plan, on the outer lateral sides of which step ledges are made while the lower and upper parts of the walls are made of heavy concrete, and the middle part of the walls is made of filtering hydraulic concrete, and the lower part is heavy embedded in the concrete of stable soils, and the upper part of heavy concrete protects against ingress of atmospheric water filtering hydraulic concrete middle portion, the bottom of which is laid perforated drainage pipes.

The technical result provided by the invention is to increase the stability of the slope and ensure the safety of work during the construction of the structure.

The invention is illustrated by drawings, where Fig. 1 shows a landslide, in the lower part of which trapezoidal drainage-buttress anti-landslide structures are arranged; figure 2 is the same side view.

In the landslide 1 there are anti-landslide structures 2. Each anti-landslide structure 2 includes vertical walls in the form of trapezoidal drainage-buttress structures in the plan, stepwise protrusions are made on the outer sides of the walls. Vertical walls have a lower part made of heavy concrete 4, which is cut into the landslide underlying 1 stable soils 5 located along the landslide 1. The upper part of the walls is also made of heavy concrete, and the middle part of the walls is made of filtering hydraulic concrete 6, at the bottom hour and which are stacked perforated drainage pipe 7. The upper part of the walls of heavy concrete protects against ingress of atmospheric water filtering hydraulic concrete walls 6 middle portion.

The construction of the anti-landslide structure 2 includes an alternate fragment of the lateral trenches in which vertical walls are made in the form of trapezoidal in terms of drainage-buttress anti-landslide structures with the simultaneous installation of stepped protrusions 3, with the lower part of the walls being deepened into stable soils 5. The lower parts of the walls are made by laying a layer of heavy concrete 4, in the lower part of which perforated drain pipes 7 are laid, then the middle part of the trenches is filled with filtering hydraulic concrete 6, On top of which a layer of heavy concrete is laid, forming the upper part of the walls. End bridges between the side walls perform after their device.

The volumes of soil 8 enclosed within the walls are drained. Their stability increases and they are included in the work of keeping the landslide from shifting. The presence of stepped protrusions 3 on the outer lateral sides of the walls increases the holding capacity of the structure due to the frontal shear resistance.

Claims (1)

Anti-landslide structure, including vertical walls, pinched into the underlying landslide, stable soils located along the landslide, characterized in that the vertical walls are made in the form of drainage-buttress structures trapezoidal in plan, on the outer sides of which are stepped protrusions, while the lower and upper parts the walls are made of heavy concrete, and the middle part of the walls is made of filtering hydraulic concrete, the lower part of heavy concrete embedded in stable soils, and the upper part nce of heavy concrete protects against ingress of atmospheric water filtering hydraulic concrete middle portion, the bottom of which is laid perforated drainage pipes.

Images