Combined ecological slope protection method for rocky high slope

An ecological slope protection and combined technology, applied in the field of geotechnical engineering, can solve problems such as cumbersome procedures, high cost, and poor results, and achieve the effects of enhancing integrity and stability, slowing down physical weathering, and strengthening fit

Inactive Publication Date: 2011-08-10
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing greening measures only pursue the greening effect, without considering rock mass stability and weathering issues
[0005] 2. In the existing technology, the protection and greening treatment of high rocky slopes can only be carried out first by reinforcement construction, then by windproof construction, and finally by greening construction. The process is cumbersome, the cost is expensive, and the effect is not good in practical applications. good

Method used

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  • Combined ecological slope protection method for rocky high slope
  • Combined ecological slope protection method for rocky high slope
  • Combined ecological slope protection method for rocky high slope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A high slope rock mass 1 has deep fractures 2 on it. Through the analysis and calculation of the slope stability by limit equilibrium method and numerical analysis method, it is found that 45×100 deep prestressed anchor cables are needed to fix the slope, and the distance between the rods is 2m, anchor cable length 27m, diameter 80mm; shallow fixed anchor rods 360×800, rod spacing 0.95m, anchor rod length 2m, diameter 25mm.

[0034] Set slope protection composite layer

[0035] a. First set up steel wire mesh 9 in the lower layer, the mesh size is 3cm×3cm;

[0036] b. Set the anti-temperature change layer 5, and the thickness of the glass fiber felt is 3.5cm;

[0037] c. The waterproof layer 6 is set, and the thickness of the composite waterproof membrane is 2.8cm;

[0038] d. Set the stabilization layer 10, the mesh size of polymer net and nylon net is 5cm×5cm;

[0039] e. Set the nutrient matrix layer 7, the materials mainly include sandy loam, sawdust, chaff, stra...

Embodiment 2

[0046] The rock mass 1 of a high slope is relatively complete and has no deep cracks. After stability analysis, it is concluded that the slope does not need deep prestressed anchor cables, and only shallow anchors can be fixed to reinforce shallow micro cracks. The number of rods is 720×640, the distance between the rods is 0.95m, the length of the anchor rod is 1m, and the diameter is 25mm.

[0047] Set slope protection composite layer

[0048] a. First set up steel wire mesh 9 in the lower layer, the mesh size is 3cm×3cm;

[0049] b. Set the anti-temperature change layer 5, and the thickness of the glass fiber felt is 3.5cm;

[0050] c. The waterproof layer 6 is set, and the thickness of the composite waterproof membrane is 2.8cm;

[0051] d. Set the stabilization layer 10, the mesh size of polymer net and nylon net is 5cm×5cm;

[0052] e. The nutrient substrate layer 7 is set, and the materials mainly include sandy loam, sawdust, chaff, straw, compound fertilizer, etc.; ...

Embodiment 3

[0058] Rock sampling was carried out in a mountainous area in Jiangsu. The rock quality of the sample was sulfide ore. It was cut into two cubes of the same size (20*20*20cm), and a comparative test was carried out in the laboratory. The surface of sample 1 is covered with a simplified combined cushion, and sample 2 is bare rock. The temperature change and dripping tests are carried out on the two sample rock masses to simulate physical weathering and chemical weathering under extreme conditions.

[0059] The test steps are as follows:

[0060] 1. Set up a simplified composite cushion for this test and cover it on the surface of sample 1. First, set the temperature-resistant layer 5, and the thickness of the glass fiber cotton felt is 1cm; set the waterproof layer 6, and the thickness of the composite waterproof membrane is 0.8cm; finally, use the bead 11 to press and form the whole;

[0061] 2. Temperature change test. Put two sample rock masses in a temperature-controlled ...

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Abstract

The invention relates to combined ecological slope protection of a rocky high slope, and belongs to the technical field of rocky high slope reinforcement, weathering resistance and ecological slope protection in rock and earth engineering. The slope protection combined layer comprises a lower grid layer, a temperature change resistant layer, a waterproof layer, a stabilizing layer, a nutritional matrix layer, a plant layer, an upper grid layer and steel battens. A construction method comprises the steps of determining anchoring force and an anchorage cable type and setting the slope protection combined layer. By combination and fixing of a prestressed anchorage cable and a shallow anchorage rod, three effects of reinforcing rocks, preventing weathering and greening the surface can be achieved, the construction process is simplified, and the operation is convenient.

Description

Technical field: [0001] The invention relates to a combined ecological slope protection method for high rocky slopes, belonging to the field of geotechnical engineering, in particular to a reinforcement, weathering and ecological slope protection method suitable for high rocky slope engineering. Background technique: [0002] In recent years, high slope geological disasters have occurred frequently in my country. In order to prevent secondary geological disasters and meet the needs of specific projects, it is necessary to adopt technical means to comprehensively protect high slopes and enhance their integrity, stability and aesthetics. Reinforcement measures for existing rocky high slopes include: reinforcement with prestressed anchor cables (Zhang Yongfang, Wang Bingyong, Research on Strengthening Expansive Soil Slopes of South-Kunming Line with Anchor Frame Slope Protection, Journal of Railway Engineering, 2000), anchor bolts ( soil nailing) reinforcement, grouting reinfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20
CPCY02A10/23
Inventor 刘文亮孙树林尚文涛王成
Owner HOHAI UNIV
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