CN-121976549-A - Landslide anti-slip structure based on hammering reinforcement and construction method

CN121976549ACN 121976549 ACN121976549 ACN 121976549ACN-121976549-A

Abstract

The invention relates to the technical field of landslide control, in particular to a landslide anti-slip structure based on hammering reinforcement and a construction method, comprising hammering reinforcement bodies, wherein the hammering reinforcement bodies are composite structures formed by carrying out hammering reinforcement in an expanded-diameter drilling area after carrying out expanding treatment on drilling holes, the composite structures comprise a dense broken stone area, a dense soil area and an impact soil area, the dense broken stone area is arranged in the expanded-diameter drilling holes, the dense soil area is arranged around the dense broken stone area, the impact soil area is positioned at the outer side of the dense soil area, and the three are sequentially formed in space by hammering reinforcement processes and jointly form a reinforcement structure for improving the internal shearing resistance of the landslide. The drill hole is subjected to diameter expansion treatment in the landslide body and hammering reinforcement is carried out to form hammering reinforcement bodies, so that the continuity of a potential sliding surface is effectively damaged, the shear strength of soil bodies near the sliding surface is improved, the dispersion and transmission of landslide thrust in the landslide body are realized, and the anti-slip stability of the landslide is integrally improved.

Inventors

WANG YI
YU YE
REN HAIBO
CHEN YOULIN
LUO JUN
LIN ZHENGGUO
HU JIAN
LI JIA

Assignees

核工业西南勘察设计研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20260323

Claims (10)

1. A landslide anti-slip structure based on hammering reinforcement is characterized by comprising a hammering reinforcement body; The hammering reinforcing body is a composite structure body formed by carrying out hammering reinforcement in a hole expanding and drilling area after the hole expanding treatment, and comprises a dense broken stone area, a dense soil area and an impact soil area, wherein the dense broken stone area is arranged in the hole expanding and drilling area, the dense soil area surrounds the dense broken stone area, the impact soil area is arranged on the outer side of the dense soil area, and the broken stone area, the dense soil area and the impact soil area are sequentially formed in space by the hammering reinforcing process and jointly form a reinforcing structure for improving the internal shear resistance of a landslide body.
2. The landslide anti-slip structure based on hammering reinforcement according to claim 1, wherein the shape of the compact crushed stone area is matched with the shape of the hole wall of the expanded-diameter drill hole, and the edge of the compact crushed stone area extends towards the compact soil area and forms a consolidation effect with surrounding soil, so that the compact crushed stone area, the compact soil area and the affected soil area are mutually continuous in space and form an integral stress structure, and the landslide thrust is transmitted outwards step by step.
3. A landslide anti-slip structure based on hammering reinforcement according to claim 2, characterized in that the hammering reinforcement body is provided in plural at the same height and is provided in one or more layers in the vertical direction.
4. A landslide anti-slip structure based on hammer reinforcement according to claim 3 wherein the hammer reinforcement is of spheroidal or near elliptical configuration.
5. The landslide anti-slip structure based on hammering reinforcement of claim 4, further comprising reinforcement pipe members arranged in a lower area of the hammering reinforcement body, wherein a plurality of the reinforcement pipe members are respectively arranged along a transverse direction and a vertical direction of the landslide body and are mutually crossed to form a grid-shaped distribution structure in the landslide body.
6. The landslide anti-slip structure of claim 5 wherein the plurality of reinforcing tubes form a joint at the space intersection, the joint being disposed at the bottom of the hammering reinforcing body.
7. The landslide prevention structure based on hammering reinforcement of claim 6 further comprising an anchor rod provided at a lower portion of the hammering reinforcement body, the anchor rod being provided in a direction perpendicular to the ground and extending into the underground stabilizing formation.
8. The landslide anti-slip structure based on hammering reinforcement of claim 7 wherein the anchor rod comprises an upper section, a middle section and a lower section connected in sequence, wherein the upper section is located in the landslide body and abuts against the hammering reinforcement body, the middle section is located between the upper section and the lower section and abuts against the lower part of the reinforcement pipe fitting, and the lower section extends to the ground and is arranged in the underground stable ground.
9. A landslide anti-slip structure based on hammer reinforcement of claim 8 wherein the middle section is disposed at the connecting node of the reinforcement tube.
10. A method of constructing a landslide anti-slip structure based on hammer reinforcement as claimed in any one of claims 1 to 9, comprising the steps of: S1, drilling and expanding the sliding surface position, namely drilling and sampling the sliding body by adopting a core drilling machine to form a drilling hole, and expanding the drilling hole at the sliding surface position after the drilling depth reaches the sliding surface position of the sliding surface, so that the drilling hole forms an expanded drilling hole in a preset height range above and below the sliding surface; S2, backfilling the crushed stone filler into the expanded drill hole, wherein the crushed stone filler is crushed stone or gravel with the mud content not more than a preset value, and the particle size of the crushed stone filler meets the hammering compaction requirement; S3, hammering and reinforcing, namely hammering the crushed stone filler backfilled in the expanded drilling hole, and supplementing the crushed stone filler in a matched manner in the hammering process, so that the crushed stone filler is gradually compacted under the hammering action and compactly acts on soil around the drilling hole until the preset compactness requirement is met, and a hammering reinforcing body is formed at the sliding surface position; s4, roughening the sliding surface, namely forming a hammering reinforcing body to locally damage the sliding surface of the original sliding surface, and forming a reinforcing area at the sliding surface; S5, arranging reinforcing pipe fittings, namely arranging the reinforcing pipe fittings in the area below the hammering reinforcing body after the hammering reinforcing body is formed, arranging the reinforcing pipe fittings respectively along the transverse direction and the vertical direction of the landslide body, and forming cross arrangement in space to form a grid-shaped distribution structure in the landslide body; s6, anchor rod construction, namely constructing anchor rods in a landslide body, enabling the anchor rods to be distributed along the direction vertical to the ground, enabling one end of the anchor rods to extend into an underground stable stratum, enabling the other end of the anchor rods to be located in the landslide body, and enabling the anchor rods to be arranged in space corresponding to the hammering reinforcing body and the reinforcing pipe fitting in sequence; And S7, reinforcing the multi-layer sliding surface, namely repeatedly executing the steps S1 to S5 aiming at one or more layers of sliding surfaces, forming a plurality of hammering reinforcing bodies at different depth positions, and matching with the arrangement of the reinforcing pipe fitting and the anchor rod to form an integral landslide anti-sliding structure.

Description

Landslide anti-slip structure based on hammering reinforcement and construction method Technical Field The invention relates to the technical field of landslide control, in particular to a landslide anti-slip structure based on hammering reinforcement and a construction method. Background At present, the technical measures commonly adopted in landslide control engineering mainly comprise retaining or anchoring structures such as anti-slip retaining walls, anti-slip piles, lattice anchor rods and the like, the application of the retaining or anchoring structures in engineering practice is wider, and a better control effect can be achieved under certain conditions; The anti-slip retaining wall mainly depends on the self weight of the structure to resist landslide thrust, larger structural size is usually required, particularly in high retaining wall engineering, the material consumption is large, the construction cost is high, the retaining wall is subjected to the action of water pressure after the wall for a long time, when a drainage system fails (such as a drain hole is blocked), engineering hidden dangers such as overturning or cracking of the retaining wall are easily caused, a drainage structure such as a reverse filtering layer and blind ditches are additionally arranged in a region with higher underground water level or stronger seepage condition, the construction difficulty and the engineering cost are further increased, meanwhile, the concrete or masonry retaining wall has larger damage to natural landscape and ecological environment, and the high retaining wall easily influences the utilization of peripheral soil and visual permeability; the anti-slide pile is mainly used for resisting landslide thrust through the bending resistance and shearing resistance of the pile body, deep hole drilling, concrete pouring or precast pile installation are usually required for construction, the construction process is complex, the period is long, the material and labor cost is high, the hole forming difficulty in a hard rock stratum or a broken belt is high, special equipment such as a down-the-hole hammer, a rotary drilling drill and the like is often required, the construction cost is further increased, and the quick emergency treatment of landslide is not facilitated; In addition, the existing landslide control technology resists landslide thrust mostly by arranging an independent supporting or anchoring structure, mainly depends on the bearing capacity of the structure to play a role of anti-sliding, cannot effectively modify the landslide surface, and is difficult to improve the shear strength of the landslide surface under the condition of not carrying out large-scale excavation or complex construction; Therefore, how to directly act on the area near the sliding surface and effectively reinforce the area without large-scale excavation and under the condition of short construction period is a technical problem to be solved in the prior art. Disclosure of Invention The invention aims to provide a landslide anti-slip structure based on hammering reinforcement and a construction method thereof, aiming at the problem of the prior art that the landslide anti-slip structure can be directly acted on the area nearby a sliding surface to effectively reinforce the area without large-scale excavation and under the condition of short construction period. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: A landslide anti-slip structure based on hammering reinforcement comprises a hammering reinforcement body; The hammering reinforcing body is a composite structure body formed by carrying out hammering reinforcement in a hole expanding and drilling area after the hole expanding treatment, and comprises a dense broken stone area, a dense soil area and an impact soil area, wherein the dense broken stone area is arranged in the hole expanding and drilling area, the dense soil area surrounds the dense broken stone area, the impact soil area is arranged on the outer side of the dense soil area, and the broken stone area, the dense soil area and the impact soil area are sequentially formed in space by the hammering reinforcing process and jointly form a reinforcing structure for improving the internal shear resistance of a landslide body. Preferably, the shape of the compact crushed stone area is matched with the shape of the hole wall of the expanded diameter drill hole, and the edge of the compact crushed stone area extends towards the direction of the compact soil body area and forms a embedding effect with surrounding soil bodies, so that the compact crushed stone area, the compact soil body area and the impact soil body area are mutually continuous in space and form an integral stress structure, and the landslide thrust is transmitted outwards step by step. Preferably, the hammering reinforcing bodies are provided in plurality at the same height, and may be provided in on