Near-slope-surface slope surface rock mass anchoring arrangement method

A technology for rock mass and slope surface, which is applied in the field of rock mass anchorage setting on the slope face, and can solve the problems of incapability of white arsenic sandstone support, loss of anchoring effect, and collapse of white arsenic sandstone.

Active Publication Date: 2019-11-29
SAFEKEY ENG TECHZHENGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The white arsenic sandstone overturned, and the collapse was mainly because the red arsenic sandstone at the lower end of the white arsenic sandstone was weathered and could not support the white arsenic sandstone, and the white arsenic sandstone and the main white arsenic sandstone produced vertical cracks, resulting in white arsonites on the slope. arsenic sandstone collapse
[0010] Reinforcement of arsenic sandstone is one of the important measures to control water and soil erosion. Nowadays, barbe

Method used

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  • Near-slope-surface slope surface rock mass anchoring arrangement method
  • Near-slope-surface slope surface rock mass anchoring arrangement method
  • Near-slope-surface slope surface rock mass anchoring arrangement method

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specific Embodiment 1

[0092] The rock mass 11 takes the white puffy sand rock mass 11 as an example. The anchor rod 14 is a hollow rod body, and high polymer is injected into the rod body. The high polymer is a two-component low-viscosity expanded polyurethane high polymer grouting material, which forms an anchor rod rod 14.

[0093] It is necessary to implement polymer anchor grouting on a certain white arsenic sandstone layer to improve its anti-overturning ability and avoid collapse, so as to prevent block-like gravity erosion. The anchor grouting design is implemented according to the following steps:

[0094] A. Determine the geometric dimensions of the white puffy sandstone body 11 on the slope face through on-site investigation, mainly including the height of the puffy sandstone body 11 on the slope face, the geometric size of the cross section and the opening degree of the vertical crack 13; please refer to figure 2 as well as image 3 , the target white sandstone body 11 to be tested is ...

specific Embodiment 2

[0150] It is necessary to implement high polymer anchor grouting on a certain white arsenic sandstone layer to prevent massive gravity erosion. The anchor grouting design is implemented according to the following steps:

[0151] A Determine the geometric dimensions of the Pisha sandstone body 11 on the slope surface through on-site investigation:

[0152] Please see figure 2 as well as image 3 , the target white arsenic sandstone body 11 to be tested is ABCD, the height is 2.0m, and the opening degree of the vertical crack 13 is 0.006m;

[0153] B determines the number of anchor rods 14 and the anchor hole spacing through stability analysis, mainly including:

[0154] B1 Determine the abscissa of the center of gravity of the section at the center of the width according to the geometric dimensions of the section, and the weight of the white sandstone body 11 per unit length along the horizontal direction is G=22.5kN / m;

[0155] B2 figure 2 As shown, the point at the inne...

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Abstract

The invention discloses a near-slope-surface slope surface rock mass anchoring arrangement method. The near-slope-surface slope surface rock mass anchoring arrangement method comprises the steps: thegeometric dimension of to-be-tested near-slope-surface slope surface rock mass and the vertical fracture aperture of the near-slope-surface slope surface rock mass are obtained; and according to the geometric dimension and the vertical fracture aperture of the near-slope-surface slope surface rock mass, the number of required anchor holes, the distance between the anchor holes and the length of ananchor rod body are calculated. According to the near-slope-surface slope surface rock mass anchoring arrangement method, the subjectivity and experience of rock mass anchoring arrangement can be effectively lowered, the anchoring arrangement method can be used for guiding a near-slope-surface slope surface rock mass anchoring grouting process for realization, scientization and refinement of anchoring reinforcement are realized, and a good foundation is laid for ensuring the anchoring reinforcement quality.

Description

technical field [0001] The invention relates to the technical field of rock mass reinforcement, in particular to a rock mass anchorage setting method on a slope face. Background technique [0002] Due to the interaction of wind erosion, water erosion, freeze-thaw and gravity erosion, rocks often present a composite erosion mode. [0003] Massive erosion usually occurs in the rock mass, and there are a large number of vertical fissures, which constitute channels for water to infiltrate. The arsenic sandstone body is completely separated from the parent body, which tends to fall and overturn. When it reaches a certain limit state, it collapses suddenly, forming a block-like gravity erosion. [0004] Collapse of rock masses on slopes often leads to serious consequences. For example, collapse of rock masses on slopes on both sides of the road will interrupt the road, and even endanger the lives and properties of pedestrians. [0005] Taking Pisha as an example: there is a spec...

Claims

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Application Information

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IPC IPC(8): E02D17/20E02D5/76
CPCE02D5/76E02D17/20
Inventor 王复明李晓龙方宏远赵鹏闫刘振
Owner SAFEKEY ENG TECHZHENGZHOU
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