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Microbial grouting anchoring method and anchoring structure for cavity grouting

An anchoring method and microbial technology, applied in the direction of building structure, building components, covering/lining, etc., can solve the problems affecting the compactness of the product, the air is not easy to discharge, and the anchoring effect is poor, so as to achieve simple and convenient operation and construction, and enhance anchoring Good effect of strength and durability

Active Publication Date: 2021-07-16
SHANDONG JIANZHU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors have found that when microbial grouting anchors the screw, due to the low viscosity of several components of the grouting liquid, it is not easy to remain after being injected into the tunnel; after the mixing of several grouting components, calcium carbonate deposits are formed quickly, and the method of inserting the screw The anchoring effect of the method is poor; the air in the orifice grouting channel is not easy to discharge, which affects the compactness of the product

Method used

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  • Microbial grouting anchoring method and anchoring structure for cavity grouting
  • Microbial grouting anchoring method and anchoring structure for cavity grouting
  • Microbial grouting anchoring method and anchoring structure for cavity grouting

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Embodiment 1

[0045] In a typical embodiment of the present invention, such as Figure 1-Figure 7 As shown, a microbial grouting anchoring method for cavity grouting is proposed.

[0046] First, the anchor member used in this method is composed of a hollow anchor rod (in this embodiment, a hollow screw 4) and a nut 17. The anchor section of the hollow screw 4 extends into the borehole of the anchor matrix 1, and the hollow screw 4 The free section is provided with a threaded button 5 and is tightly connected with a nut 17 .

[0047] The steps of its anchoring method are:

[0048] Step 1, first drill holes on the anchorage substrate 1 such as the wall, such as figure 1 Shown; the diameter of the borehole 2 is 2 to 3mm larger than the hollow screw of the anchoring member, so as to fill the screw.

[0049] The borehole is inclined downward, and the angle with the horizontal direction is about 15-20 degrees. The height of the borehole opening is higher than the height of the borehole bottom ...

Embodiment 2

[0078] This embodiment provides a microbial grouting anchorage structure, such as Image 6 As shown, it includes a hollow anchor rod (here it is a hollow screw 4), the hollow anchor rod is a hollow structure, the middle part of the hollow anchor rod is provided with a side hole communicating with the internal cavity, and the hollow screw rod 4 extends to the drill hole 2 of the anchor matrix 1 A calcium carbonate cement body 18 induced by microorganisms is arranged between the borehole and the hollow screw 4, and a fixed object 16 is arranged on the side wall of the anchoring matrix. 19 and nut 17, the first surface of the wedge-shaped backing plate is attached to the fixed object, the second surface of the wedge-shaped backing plate is adjacent to the nut, the second surface of the wedge-shaped backing plate is perpendicular to the axial direction of the hollow screw rod 4, and the The end face is pressed tightly against the second face of the wedge-shaped backing plate.

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Abstract

The invention discloses a microbial grouting anchoring method and an anchoring structure for grouting in a cavity, comprising the following steps: drilling holes in the anchoring base, installing multiple groups of grouting pipes in the cavity of a hollow anchor rod, wherein some groups of grouting pipes extend To the bottom of the cavity, some groups of grouting pipes extend from the side hole in the middle of the hollow anchor rod to the outside of the hollow anchor rod, and then insert the hollow anchor rod into the drill hole; inject the grouting liquid into the drill hole through the grout pipe; install on the side wall of the anchor base For the fixed object, install the nut on the hollow anchor rod to complete the anchoring.

Description

technical field [0001] The invention belongs to the technical field of grouting and anchoring, and in particular relates to a microbial grouting and anchoring method and an anchoring structure for grouting in a cavity. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Anchor bolts are mechanical fasteners consisting of anchor rods, nuts and backing plates. The anchor rod needs to be anchored into the base of the wall to a certain depth, and then the wall insulation or decorative materials are fixed through the nut. The materials used for cementing anchor bolts mainly include cement-based and epoxy resin. Cement-based materials are not effective when the anchoring depth is large due to the volume shrinkage of cement hardening, the material is prone to water, and poor fluidity; epoxy resin materials are easy to age and have certain toxicity. The cal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/38E04B1/76E04F13/08
CPCE04B1/38E04B1/7629E04F13/0801
Inventor 贾强张鑫赵庆瑞盛乾
Owner SHANDONG JIANZHU UNIV
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