SU1497357A1 - Protective wall of antilandslide structure - Google Patents

Abstract

The invention relates to the construction of protective walls in landslide areas. The purpose of the invention is to increase work efficiency and reduce the labor intensity of construction. The protective wall of the landslide structure contains rows of piles 1 placed across the landslide massif 2. Between the rows of piles 1 a drainage trench is placed, provided with vertical layers of reinforcing web 8 and tons 9. The ends of the g 9 are fixed on drainage wells adjacent to the edges drainage trench. When moving the landslide massif 2, the drainage trench absorbs part of the pressure and, through drafts 9, transfers the load to the drainage wells. The water is intensively cut off into the drainage trench through drainage wells. 3 il.

Description

(L

 with

oo

SP

The invention relates to the construction of protective walls in landslide areas.

The purpose of the invention is to increase work efficiency and reduce the complexity of construction.

FIG. 1 shows the plan of the protective wall; in fig. 2 - site adjoining the drainage trench to the drainage well; in fig. 3 - wall cross section.

The protective wall of the anti-landslide structure contains rows of bored reinforced concrete piles 1 placed across the landslide massif 2. The lower ends of the piles 1 are embedded in a more stable base 3, and the upper ones are united by a plate of a grillage 4, under which is located a waterproof element 5 preventing the penetration of surface moisture into the drainage trench 6. Drainage trench 6 is placed between rows of piles 1, while its outer wall is adjacent to the inner surface of the outermost, in relation to landslide array 2, piles 1. Drainage trlishe I contains drainage material 7 (crushed stone, gravel, sand), the strength properties of which do not depend on the degree of its wetting, but are also provided with at least two vertical layers of reinforcing web 8 (made, for example, of geotextile) and flexible 9. T gi 9 are in contact with the inner surface of the outermost, with respect to landslide massif 2, piles 1 and with a layer of reinforcing cloth 8, which is mounted on the outer wall of the drainage trench 6. The ends of t g 9 are fixed on the drainage wells 10 adjacent to the edge of the drainage tranche ei 6. Drainage wells 10 are located on stable parts of the slope 11.

The construction of the protective wall is carried out in the following order.

After production of reinforced concrete bored piles 1 on the surface of the landslide array 2 between the rows of piles 1, a trench of the required depth and length is arranged. The wells of the drainage wells 10 are installed on the stable parts of the slope 11 and the casing of the drainage wells 10 is installed. Then horizontal drafts 9 are installed in the drainage trench, their ends are fixed on the hard drainage casing of the drainage wells 10, the layers of the reinforcing fabric 8 are inserted - geotextile

l and fill up the trench 6 with drainage material 7. At the same time, 7 sinuses are filled with drainage material between the walls of boreholes and casing of drainage wells 10.

The upper part of the drainage trench 6 and the sinuses are filled with clayey soil with its layer-by-layer compaction. Then construct the slab of the grillage 4, which unites the upper ends of the piles 1.

The protective wall works as follows.

When moving the landslide array 2, due to its wetting by surface and groundwater, occurs

forcing the landslide mass 2 between its 1 top row yes. In this case, the drainage trench 6, reinforced with vertical layers of the blade 8, perceives the outstanding part of the pressure of the landslide.

array 2 and through the glands 9 transfers the load to the drainage wells 10. On the contact surfaces of the drainage wells 10 with the draining material 7, compressive stresses occur, causing additional compression of the landslide massif 2

and increasing the stability of slope 11. The pressure of landslide array 2 on the drainage trench 6 causes intense squeezing of moisture into the drainage material 7, part of which is removed through the drainage wells 10 located along the edges of the drainage trench 6.

Claims (1)

Invention Formula five The protective wall of the landslide structure, containing at least two rows of pile installed across the landslide, located between the rows of piles of drainage trenches at the end of the landslide pile and fixed in the anchor elements of 0 by the fact that, in order to increase the work efficiency and reduce the labor intensity of construction, it is provided with layers of reinforcing fabric installed in the drainage trench, the outermost layer of the landslide array being in contact with the pile surfaces, the rods are placed between the specified layer and a series of piles, and anchor elements formed by drainage wells, which are located at the edges of the trench. 9 8 FIG. /