Expansive soil slope flexible ecological supporting structure and construction method

A support structure and expansive soil technology, applied in the field of geotechnical engineering, can solve the problems of soil being easily eroded or washed away, high maintenance costs, and unreliable combination of geotextiles and vegetation, so as to reduce soil erosion and realize Remarkable effect of overall protection and ecological environmental protection

Pending Publication Date: 2022-07-15
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ecological slope protection technology for expansive soil slopes also has some shortcomings: the combination of geotextiles and vegetation is not firm, the soil is easily eroded or washed away, and the later maintenance costs are high.

Method used

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  • Expansive soil slope flexible ecological supporting structure and construction method
  • Expansive soil slope flexible ecological supporting structure and construction method
  • Expansive soil slope flexible ecological supporting structure and construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] like Figure 1 to Figure 3 As shown, the flexible ecological support structure for expansive soil slopes according to the present invention includes vegetation protection pads 1 , staples 2 , anchor rods 3 , intercepting ditch 8 , drainage ditch 9 and slope protection vegetation 10 . The specific structure is:

[0042] The vegetation protection pad 1 has a bumpy rough surface and sufficient mesh space, and is tiled on the slope surface 13 to ensure the growth and development of the slope protection vegetation 10; the vegetation protection pad 1 and the protection pad 1 are connected at least overlapping 150mm, and the overlapping part is fixed by the U-shaped nails 2; the vegetation protection pad 1 has high tensile strength and certain ductility, which not only allows certain deformation of the expansive soil on the slope surface, releases the expansion force, but also limits the cracks on the slope surface. development. The anchor rod 3 includes a rod body 4 , an an...

Embodiment 2

[0044] The construction method of the flexible ecological supporting structure of expansive soil slope according to the present invention comprises the following steps:

[0045] (1) Level the slope and lay the soil for cultivation. Remove rocks, clods, weeds and other objects on the slope surface 12 of the expansive soil slope to make the slope surface 12 smooth. After leveling the slope, lay a layer of about 5cm of cultivated soil on the slope.

[0046] (2) Measure the line, drill, clear the hole, install the bolt body 4, and pour the cement mortar 7. The anchor rods 3 are arranged in a matrix type, the spacing of the anchor rods 3 is 1-2m, the inclination angle of the anchor holes is 15°-25°, and the depth of the anchor rods 3 is sharply affected by the local expansive soil slope sliding surface or the atmosphere of the expansive soil slope. If the depth is greater than 1 m, the tensile force transmitted by the vegetation protection pad 1 needs to be considered in the desi...

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Abstract

The expansive soil side slope flexible ecological supporting structure comprises a vegetation protection pad, anchor rods, U-shaped nails, a cutting / drainage ditch and slope protection vegetation, the vegetation protection pad is flatly laid on the surface of an expansive soil side slope and is attached to a soil body, and the edge part of the vegetation protection pad is embedded into the bottom of the cutting / drainage ditch; the anchor rods are arranged in the grids of the vegetation protection pad in a rectangular shape; the U-shaped nails are used for fixing the vegetation protection pads between the anchor rods and at the edge of the intercepting / draining ditch; the vegetation protection pad is fixed at the bottom of the interception / drainage ditch, the interception / drainage ditch is manufactured at the upper part according to the designed depth, and the interception / drainage ditch is finally merged into a drainage system and is arranged at the side slope protection outer edge; the slope protection vegetation is densely planted in the three-dimensional grid space of the vegetation protection pad. Surface layer protection of the slow expansive soil side slope can be achieved, the overall stability of the side slope is improved, and the long-term treatment effect is good.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and relates to an expansive soil slope flexible ecological support structure and a construction method, which are used for comprehensively ensuring the expansive soil gentle slope surface protection and the overall stable flexible ecological support technology. Background technique [0002] Expansive soil is a special cohesive soil rich in montmorillonite. The repeated expansion or contraction of expansive soils tends to loosen the soil structure and attenuate its strength on the one hand, and induce the formation and development of fissures on the other hand. The generation and development of fissures not only weakens the integrity of the soil, but also increases the infiltration channels of the soil, resulting in water softening of the soil at the depth of fissure development, loss of matrix suction, and a sharp drop in strength, while soil below the depth of fissure extension The body ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D5/76E03F5/04A01G9/033A01G13/02A01G22/00A01B79/02
CPCE02D17/20E02D5/76E03F5/04A01G9/033A01G13/0275A01G22/00A01B79/02
Inventor 许英姿杨昀和杨春燕苏超朱乔生黄震
Owner GUANGXI UNIV
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