Expansion type support management method for slope ground partial potential safety hazard section

A safety hazard and expansion-type technology, applied in excavation, climate change adaptation, construction, etc., can solve the problem of safety hazard area governance without any suggestions for prevention and control measures, etc., to achieve effective support and improve the overall strength effect

Inactive Publication Date: 2009-07-22
陈洪凯 +1
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Problems solved by technology

[0004] So far, important scientific and technological progress has been made in the research and prevention of slopes at home and abroad. The national standard "Technical Code for Building Slope Engineering" (GB50330-2002) has proposed a complete set of technical methods for effective prevention and control of rock and soil slopes with a height less than 20m However, for rock and soil slopes with a height of more than 20m, the code clearly states that "special demonstration is required", and does not give any suggestions for prevention and control measures for the governance of the local safety hazard areas of rock and soil on slopes

Method used

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  • Expansion type support management method for slope ground partial potential safety hazard section
  • Expansion type support management method for slope ground partial potential safety hazard section
  • Expansion type support management method for slope ground partial potential safety hazard section

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Embodiment Construction

[0037] see image 3 , Slope geotechnical hidden danger zone 2 refers to the high-pressure stress area that exceeds the allowable bearing capacity of the rock-soil medium due to the loss of lateral support after the formation of the rock-soil slope and the internal stress adjustment of the slope. It is easy to produce rheological damage and external force erosion damage, which will endanger the safety of the entire slope.

[0038] The working principle of the present invention is as follows:

[0039] After using the method invented by Wooden to control the local safety hidden danger area 2 of slope rock and soil, see Figure 4 , the expansion-type plain concrete bolt 1 mainly expands in the lateral direction (radial direction of the bolt), and then compacts the rock-soil medium in the local safety hazard area 2 of the rock and soil, making the pore ratio change from e before treatment 1 reduced to post-governance e 2 ; In the rock-soil hidden danger area 2 after compaction, ...

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Abstract

The invention discloses an expansion-style support treatment method used for the local risk zones of slope rock. A plurality of axial parallel expansion-style plain concrete anchor rods are arranged in the risk zones of the slope rock. The invention has the beneficial effects that arranging the expansion-style plain concrete anchor rods can perform the side expansion effect of the anchor rods so as to extrude the risk zones of the rocks, enhance the integral intensity of the rocks in the risk zone and effectively support the local risk zones of the slope rock.

Description

technical field [0001] The invention relates to a disaster prevention and control technology for rock and soil slopes, in particular to an expansion type support treatment method for local safety hidden danger areas of rock and soil slopes. Background technique [0002] my country's mountains and hills account for more than 2 / 3 of the total land area. With the rapid construction of high-grade highways and the rapid development of mountain towns in China, the number of high rock and soil slopes is increasing, the height is increasing, and the slope is becoming steeper. Security concerns are growing, see figure 1 , 2 , the geomorphic characteristics of two typical slope disaster hazards. For example, on November 20, 2007, a huge collapse occurred on the K1405 slope of National Highway 318 in Gaoyangzhai, Badong County, Hubei Province. A bus with the license plate number EQ20684 was buried by the collapsed body. All 31 people were killed. The source of the collapse disaster w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20
CPCY02A10/23
Inventor 陈洪凯唐红梅
Owner 陈洪凯
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