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Alien soil for slope protection of loess slope plants

A technology for loess and slopes, applied in the direction of botany equipment and methods, applications, fertilizer mixtures, etc., can solve the problems of difficult vegetation protection on slopes, achieve the effects of solving water shortage, simple construction, and improving structure

Active Publication Date: 2010-08-11
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The beneficial effect of the present invention is that it can improve the structure of sandy loess, provide the soil environment required for the growth of slope plants, and more importantly, effectively solve the problems caused by lack of water and difficulty in water retention in the northern semi-arid loess region. It is difficult to carry out vegetation protection on slopes; waste and useless spoils are mainly used, and the raw materials are easy to obtain, low in price, and simple in construction, which is conducive to reducing the investment in slope protection projects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The guest soil includes the following components by weight: 900 parts of sandy loess, 200 parts of soil conditioner (peat soil), 2 parts of water-retaining agent, 0.2 part of binder, and 2 parts of compound fertilizer. It is used for the side slope of loess embankment in section DK248+641.24~DK248+830. The subgrade of this section is located at the entrance of Lujiaya Tunnel.

[0026] There are Quaternary Upper Pleistocene (Q3) sandy loess and Middle Pleistocene (Q2) sandy loess distributed in this section, and the stratum lithology is described as follows:

[0027] Sandy loess (soft soil) (Q3): light yellow, yellowish brown, loose, slightly wet, uniform soil quality, loose structure, containing a few snail fossils, thickness 0-10m, penetration resistance of static penetration 1285~2232kPa, with an average of 1659kPa, which belongs to Class II ordinary soil.

[0028] Sandy loess (Q3): grayish yellow, yellowish brown, slightly dense to medium dense, slightly wet, conta...

Embodiment 2

[0032] The guest soil includes the following components by weight: 860 parts of sandy loess, 120 parts of soil conditioner (peat soil), 1.6 parts of water-retaining agent, 0.5 part of binder, and 3 parts of compound fertilizer. It is used for the loess cutting slope of section DK297+182.94~DK298+420 of Zhengxi Passenger Railway, and the subgrade length of the test section is 1237m. This section belongs to the second terrace of the Yellow River, with an elevation of 370-390m and a relative elevation difference of about 20m. 100-300m on the left side of the line is the Lianhuo Expressway, which is connected with the 310 National Highway by a rural road, so the traffic is more convenient. This section of the project is mainly subgrade, with excavation at both ends and filling in the middle. The maximum filling height in the center is 2.7m, and the deepest excavation height in the center of the cutting is 18.1m. The vegetation on the surface of the loess is not developed, which i...

Embodiment 3

[0040] The guest soil includes the following components by weight: 800 parts of sandy loess, 200 parts of soil conditioner (peat soil), 1 part of water-retaining agent, 1 part of adhesive, and 5 parts of compound fertilizer. It is used for the loess cutting slope of section DK299+210~DK301+949.76 of the Zhengxi Passenger Dedicated Line. This section belongs to the second-level terrace of the Yellow River, with an elevation of 400-430m and a relative elevation difference of about 30m. The terrain is generally flat and open, with slightly higher sides, mostly cultivated land and orchards. There are many residential areas along the route, and there are rural roads connected to National Highway 310, so the traffic is relatively convenient. The line mainly passes through cuttings, and the maximum excavation depth in the center is about 17.9m. The vegetation on the surface of the loess is not developed, which is easy to cause water and soil erosion.

[0041] The stratum of the cutt...

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Abstract

The invention relates to alien soil for slope protection of loess slope plants, which not only meets the physical structures for the growth of the slop plants in the semi-arid loess area, but also has good water storage capacity, water retention and nutrient preserving capability, provides moisture and nutrient for the growth of the plants, and has certain cementitiousness so as to be attached to the loess slope by means of engineering measures. The alien soil comprises the following components by weight part: 800-900 parts of sandy loess, 100-200 parts of soil conditioner, 1-2 parts of water retention agent, 0 to 1 part of caking agent, and 2-5 parts of compound fertilizer. The invention not only can improve the structure of sandy loess, but also provide the soil environment for the growth of the slop plants, and more importantly, effectively solves the problems of difficult vegetation protection of slopes due to the lack of water and difficult water retention in the northern semi-arid loess area. The invention mainly adopts disused soil, and has the advantages of readily available raw materials, low cost, simple construction and being favorable for reducing slope protection engineering investment.

Description

technical field [0001] The invention relates to plant slope protection technology, in particular to a guest soil suitable for plant protection of loess cutting slopes and loess embankment slopes in semi-arid areas. Background technique [0002] Slope plant slope protection technology is a new technology to beautify the ecological environment while stabilizing rock and soil slopes by utilizing the principles of plant culmination and soil consolidation. In recent years, the needs of ecological environment protection and the requirements of green passage construction have made more and more plant slope protection technologies applied to the slope protection of railways, highways, and municipal projects, especially in the southern regions with better climate conditions. Vegetation protection technologies such as planting, three-dimensional vegetation nets, guest soil spraying, and organic substrate spraying have been widely used and achieved good results. However, in the northe...

Claims

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Application Information

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IPC IPC(8): A01G1/00E01C3/00E02D17/20C05G3/00C05G3/04C09K17/20C09K17/02C05G3/80
Inventor 孙莺张俊云罗照新李安洪
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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