Soft rock slope ecological protection structure and construction method thereof
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A technology for ecological protection and soft rock, applied in infrastructure engineering, botanical equipment and methods, excavation, etc. It can reduce erosion, prevent softening and disintegration, and accelerate drainage.
Active Publication Date: 2021-07-27
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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This protection method has a good effect on preventing rainwater from seeping into the soft rock slope, but the construction cost is high, and the environment is not suitable for the normal growth of plants. "Replacing green mountains and green waters is not in line with the harmonious concept of natural ecology
At the same time, the existing soft rock slope protection technology does not consider the internal stability of the soft rock slope, pays less attention to the infiltration of rainwater into the soft rock slope body and the drainage problems inside the soft rock slope body, and cannot solve the problem of soft rock slope at the same time. Denudation and internal softening of the native surface of slopes
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Embodiment 1
[0096] In order to obtain the soft rock matrix ecological concrete layer 3 with larger porosity and strength, the preparation method of the soft rock matrix ecological concrete layer 3, such as Figure 10 shown, follow the steps below:
[0097] S41, Screening: Manually smash the taken mudstone, and screen out mudstone aggregates with a particle size of 10-15mm. Material treatment to avoid the high density of the formed mudstone, which is not suitable for the growth of plants; then wash and dry it.
[0098] S42, take each raw material according to the following parts by mass: 75 parts of mudstone aggregate, 18 parts of cement, 2 parts of water, 1 part of naphthalene-based water reducer FDN-C;
[0099] S43, adding water to the screened mudstone aggregate, the quality of the added water is 2.67% of the mudstone aggregate mass, stirring for 120-140s, making it reach a saturated surface dry state;
[0100] S44, stirring 50% of the cement weighed in step S42 and the mudstone aggre...
Embodiment 2
[0105] The particle size of the mudstone aggregate is 20-25mm, and each raw material is weighed according to the following parts by mass: 85.2 parts of mudstone aggregate, 12 parts of cement, 6 parts of water, 0.8 part of naphthalene-based water reducer FDN-C; the remaining steps are the same as in Example 1 same. The compressive strength of the ecological concrete layer 3 of the soft rock matrix is 5.2MPa, and the effective porosity is 28%.
Embodiment 3
[0107] The particle size of the mudstone aggregate is 15-25mm, and each raw material is weighed according to the following parts by mass: 80 parts of mudstone aggregate, 15 parts of cement, 4 parts of water, 0.9 part of naphthalene-based water reducer FDN-C; the remaining steps are the same as in Example 1 same. The compressive strength of the ecological concrete layer 3 of the soft rock matrix is 5.5 MPa and the effective porosity is 20%.
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Abstract
The invention discloses a soft rock slope ecological protection structure and a construction method thereof. The soft rock slope ecological protection structure comprises an ecological protection layer and a drainage system, wherein the ecological protection layer comprises a permeable drainage layer, a soft rock matrix ecological concrete layer and a vegetation base soil layer, the permeable drainage layer is attached to the slope surface of the soft rock slope body, and the soft rock matrix ecological concrete layer and the vegetation base soil layer are sequentially arranged on the upper surface of the permeable drainage layer; and the drainage system comprises in-slope drainage pipes embedded in the soft rock slope body and a slope surface drainage structure arranged on the upper surface of the vegetation base soil layer. According to the protection structure, all the protective layers work together, multiple anti-seepage and drainage functions are achieved, the soft rock slope is stabilized together, and the construction cost is low; and meanwhile, the slope greening effect is improved, and the stability of the interior of the soft rock slope is enhanced.
Description
technical field [0001] The invention belongs to the technical field of slope engineering protection, and relates to an ecological protection structure for soft rock slopes and a construction method thereof. Background technique [0002] In recent years, the construction of highway projects has accelerated, and landslides and collapses caused by highway slope instability have occurred frequently. The degree of infiltration of rainwater into soft rock slopes and the internal drainage effect of soft rock slopes directly affect the surface layer of soft rock slopes. stability. At the same time, the rock mass of the soft rock slope has poor mechanical properties, and there are obvious disintegration, expansion and cracking phenomena after the action of heat and humidity. [0003] The instability of soft rock slopes is a cyclic and gradual process. The disturbance of engineering excavation to soft rock slopes will destroy the original vegetation coverage of soft rock slopes, resu...
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