An Anchor Cable Supporting Method for Columnar Jointed Rock Mass Slope

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

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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

CN105350549BInactive Publication Date: 2017-03-22HOHAI UNIV

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[0027] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0028] Such as figure 1 As shown, a kind of columnar joint rock mass slope bolt support method of embodiment comprises the following steps:

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

[0030] (2) Calculate the length L of the anchor cable and the layout of the holes. Such as figure 2 As shown, the calculation of t...

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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 slope stability control engineering technology, in particular to an anchor cable support method for a columnar jointed rock mass slope. Background technique [0002] Columnar joints are a kind of proto-tensional rupture structure with regular columnar shape widely developed in basalt lavas, which is formed by basalt lava in the shallow crust along active faults, large-scale eruption and overflow to the surface, and then condenses and shrinks. Columnar jointed rock mass is widely distributed in the hydropower development area of Southwest my country. These columnar jointed rock masses all exist in the geological environment of complex seepage field and stress field. Due to the development of joint fissures, broken core, low RQD value and poor integrity, the slope of columnar jointed rock mass is prone to slope deformation or even failure. [0003] Anchor cable support is a measure to support the surrounding rock with anchor ...

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Application Information

Patent Timeline

22 Mar 2017

Publication

CN105350549B

IPC: E02D17/20

CPC: E02D17/202; E02D2600/30

Inventors: 张久长; 杨兰兰