CN218990377U

CN218990377U - Loess slope drainage structures who contains abandonment cave dwelling

Info

Publication number: CN218990377U
Application number: CN202320169774.1U
Authority: CN
Inventors: 李菊芳; 张世径; 李志鹏
Original assignee: Northwest Research Institute Co Ltd of CREC
Current assignee: Northwest Research Institute Co Ltd of CREC
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-05-09
Anticipated expiration: 2033-02-09

Abstract

The utility model discloses a loess slope drainage structure containing abandoned cave, which belongs to the technical field of slope protection, wherein a vault, a side wall and a back wall of the abandoned cave are hung with a net and sprayed with concrete to form a concrete layer, a plurality of vertical drainage holes are drilled on the vault, a plurality of upward drainage holes are drilled on the side wall, and a plurality of upward drainage holes are drilled on the back wall; a concrete bottom plate is constructed on the ground of the cave, the concrete bottom plate is inclined from two sides to the center, and the center of the cave forms an inner section drainage ditch along the length direction; a concrete retaining wall is built at the side slope outside the cave, and is provided with a drain hole which is connected with an inner section drainage ditch in the cave; the outside of the concrete retaining wall is provided with an outer section drainage ditch in a construction mode, and water in the drainage hole flows into the outer section drainage ditch.

Description

Loess slope drainage structures who contains abandonment cave dwelling

Technical Field

The utility model belongs to the technical field of slope protection, and particularly relates to a loess slope drainage structure containing abandoned kiln holes.

Background

Loess is a fourth sediment, develops in vertical joints, and has stronger structural property; the reinforcing cohesion of the cementitious mass is a major component of its strength. The loess slope is affected by the early drying, the natural water content of the loess is generally low, the intensity is high, and the steep loess slope is quite common. Because the cementing materials among loess particles have poor water resistance, the water content of the soil body is increased, so that the effect of reinforcing cohesive force is weakened, the strength of the loess is reduced, and the loess slope is caused to collapse or slide.

In shan ganning, the layers of the yellow soil are very thick, some are tens of meters thick, and the Chinese people creatively use the high-rise favorable topography, dig holes and settle, so that kiln buildings called green buildings are created. Kiln holes are generally in the forms of cliff type kiln holes, sinking type kiln holes, independent type kiln holes and the like, wherein the cliff type kiln is more applied.

Due to the improvement of economic conditions, part of residents build new courtyards in front of the cliff type cave, or plan and build roads in front of the cliff type cave, and the original cliff type cave is abandoned. However, the cliff-leaning cave slope is higher, the loess slope is cut in the cave construction process to destroy the original steady-state landform, instability and landslide are easy to occur under the influence of water such as precipitation, irrigation and the like, the newly built courtyard or road in front of the cave is endangered, and the safety of residents is seriously threatened. Therefore, reinforcement treatment is needed to be carried out on the existing cliff-leaning abandoned cave so as to improve the stability of the cave slope.

Disclosure of Invention

The utility model provides a loess slope drainage structure containing abandoned kiln holes, and aims to solve the problem that after existing toe kiln holes are abandoned, the side slope has landslide risk, and safety of newly built courtyards or roads in front of the side slope is affected.

Therefore, the utility model adopts the following technical scheme:

the loess slope drainage structure comprises a vault, side walls and a back wall of the abandoned cave, wherein the vault is provided with a plurality of vertical drainage holes in a drilling mode, the side walls are provided with a plurality of upward drainage holes in a drilling mode, and the back wall is provided with a plurality of upward drainage holes in a drilling mode;

a concrete bottom plate is constructed on the ground of the cave, the concrete bottom plate is inclined from two sides to the center, and an inner section drainage ditch is formed on the cave along the length direction;

a concrete retaining wall is built at the side slope outside the cave, and is provided with a drain hole which is connected with an inner section drainage ditch in the cave; the outside of the concrete retaining wall is provided with an outer section drainage ditch in a construction mode, and water in the drainage hole flows into the outer section drainage ditch.

Further, soft water permeable pipes are arranged in the upward inclined drain holes and the vertical drain holes in a penetrating way.

Further, the upward inclined drain holes and the vertical drain holes are arranged at intervals along the length direction of the cave.

Further, the concrete bottom plate is provided with slopes along the transverse direction and the longitudinal direction of the kiln, and the slopes are 10% -20%.

The utility model has the beneficial effects that: forming a concrete layer by spraying concrete on the inner wall of the kiln, and improving the supporting force of the kiln; and respectively constructing drainage holes on the vault, the side wall and the back wall of the kiln, and draining water in the soil layer above the kiln from the inner section drainage ditch of the kiln so as to reduce the water content of soil body above the kiln and improve the stability of the soil body and the stability of the side slope.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a kiln of the utility model;

in the figure: 1-cave, 2-concrete layer, 3-vertical drainage hole, 4-upward inclined drainage hole, 5-concrete bottom plate, 6-concrete retaining wall, 7-drainage hole, 8-inner section drainage ditch and 9-outer section drainage ditch.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 and 2, a loess slope drainage structure containing abandoned cave, wherein a vault, a side wall and a back wall of the abandoned cave 1 are hung with a net to spray concrete to form a concrete layer 2, a plurality of vertical drainage holes 3 are drilled on the vault, a plurality of inclined drainage holes 4 are drilled on the side wall, a plurality of inclined drainage holes 4 are drilled on the back wall, soft permeable pipes are arranged in the vertical drainage holes 3 and the inclined drainage holes 4 in a penetrating manner, and the inclined drainage holes 4 and the vertical drainage holes 3 are distributed along the length direction of the cave 1 at intervals. The concrete layer 2 forms a supporting function on the inner wall of the kiln cavity 1, and the vertical drain holes 3 and the upward drain holes 4 are used for draining water in the soil layer above the kiln cavity 1.

The concrete bottom plate 5 is constructed on the ground of the cave dwelling 1, the concrete bottom plate 5 is in a slope shape from two sides to the center, the concrete bottom plate 5 is also in a slope shape from inside to outside, the gradients are 10% -20%, an inner drainage ditch 8 is formed in the center of the cave dwelling 1 along the length direction, and the inner drainage ditch 8 is used for draining water in the cave dwelling 1.

A concrete retaining wall 6 is built at the side slope of the outer side of the cave 1, a drain hole 7 is arranged on the concrete retaining wall 6, and the drain hole 7 is connected with an inner section drain ditch 8 in the cave 1; the outside of the concrete retaining wall 6 is provided with an outer intercepting drainage ditch 9 in a construction mode on the ground, and water in the drainage hole 7 flows into the outer intercepting drainage ditch 9.

Claims

1. The loess slope drainage structure containing the abandoned cave is characterized in that a vault, a side wall and a back wall of the abandoned cave (1) are hung with a net and sprayed with concrete to form a concrete layer (2), a plurality of vertical drainage holes (3) are drilled on the vault, a plurality of upward drainage holes (4) are drilled on the side wall, and a plurality of upward drainage holes (4) are drilled on the back wall;

a concrete bottom plate (5) is constructed on the ground of the cave (1), the concrete bottom plate (5) is inclined from two sides to the center, and an inner section drainage ditch (8) is formed at the center of the cave (1) along the length direction;

a concrete retaining wall (6) is built at the side slope of the outer side of the cave (1), a drain hole (7) is arranged on the concrete retaining wall (6), and the drain hole (7) is connected with an inner section drain ditch (8) in the cave (1); an outer section drainage ditch (9) is constructed on the ground outside the concrete retaining wall (6), and water in the drainage hole flows into the outer section drainage ditch (9).

2. The loess slope drainage structure with abandoned cave dwelling as claimed in claim 1, wherein the vertical drainage holes (3) and the upward drainage holes (4) are internally perforated with soft permeable pipes.

3. The loess slope drainage structure including abandoned cave dwelling as claimed in claim 1, wherein the upward slope drainage holes (4) and the vertical drainage holes (3) are arranged at intervals along the length direction of the cave dwelling (1).

4. The loess slope drainage structure with abandoned cave dwelling as claimed in claim 1, wherein the concrete bottom plate (5) is provided with slopes along the transverse direction and the longitudinal direction of the cave dwelling (1), and the slopes are 10% -20%.