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Columnar jointed rock mass slope anchor cable supporting method

A columnar joint and anchor cable support technology, applied in excavation, construction, foundation structure engineering, etc., can solve problems such as unreasonable force and physical strength, and achieve reasonable force and good support effect

Inactive Publication Date: 2016-02-24
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing anchor cable support technology has only one anchor cable in the same hole position, resulting in the anchor cables in the anchor cable support area are all in the same direction, making the physical force unreasonable, especially for columnar joint rock mass

Method used

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  • Columnar jointed rock mass slope anchor cable supporting method
  • Columnar jointed rock mass slope anchor cable supporting method
  • Columnar jointed rock mass slope anchor cable supporting method

Examples

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Embodiment Construction

[0027] In the following, the present invention will be further clarified with reference to specific examples. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand various equivalent forms of the present invention. All the modifications fall within the scope defined by the appended claims of this application.

[0028] Such as figure 1 As shown, a method for supporting a side slope of a columnar jointed rock mass in an embodiment includes the following steps:

[0029] (1) Obtain the inclination α and inclination angle β of columnar joints. Carry out on-site engineering geological exploration to measure the slope α and dip angle β of the columnar jointed rock mass.

[0030] (2) Calculate the anchor cable length L and hole location. Such as figure 2 As shown, the calculation of the length of the anchor cable can ref...

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Abstract

The invention discloses a columnar jointed rock mass slope anchor cable supporting method. Drilled holes are arranged in rows, and the holes in the corresponding positions in every two adjacent rows are staggered by a certain distance in height. Two drilled holes are formed in the same hole position and are in the leftward direction and the rightward direction respectively. Each left drilled hole and the corresponding right drilled hole are formed in the same plane, and the plane is perpendicular to the columnar jointing axial direction. Therefore, a three-dimensional anchor cable network perpendicular to the columnar jointing axial direction is formed. The defects that in the traditional technology, anchor cable stress is unreasonable, and the supporting effect is poor are overcome. The three-dimensional anchor cable network is formed, anchor cable stress is reasonable, and the supporting effect is good.

Description

Technical field [0001] The invention relates to a slope stability treatment engineering technology, in particular to an anchor cable support method for a columnar jointed rock mass slope. Background technique [0002] Columnar joints are a widely-developed primary tensile fracture structure in regular columnar form in basalt lava. It is formed by large-scale eruption and overflow of basalt lava in the shallow crust along active faults and condensation and contraction to the surface. Columnar jointed rock masses are widely distributed in hydropower development areas in Southwest my country. These columnar jointed rock masses all occur in the complex geological environment of seepage field and stress field. Due to the development of joints and fissures, the core is broken, the RQD value is low, and the integrity is poor, the columnar jointed rock mass slope is prone to slope deformation or even failure. [0003] Anchor cable support is a measure of using anchor cables to support th...

Claims

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Application Information

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IPC IPC(8): E02D17/20
CPCE02D17/202E02D2600/30
Inventor 张久长杨兰兰孟庆祥王如宾徐卫亚王环玲闫龙俞隽
Owner HOHAI UNIV
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