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Microbial capsule applied to dangerous rock mass reinforcement and construction process

A technology of microorganisms and dangerous rock mass, applied in the field of geotechnical engineering, can solve the problems that dangerous rock mass cannot form effective support, it is difficult to achieve protection, and the construction period is long, so as to improve connectivity and integrity, and overcome obvious brittleness , to ensure the effect of uniformity

Active Publication Date: 2020-07-28
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The support body is usually made of concrete poured on site. A cavity is likely to be formed between the top of the support body and the suspended dangerous rock mass. The dangerous rock mass and the support body cannot be in complete contact, and it may not be able to form effective support for the dangerous rock mass. achieve the purpose of protection
Pouring concrete on site requires a long construction period from batching, mixing, molding, vibrating to curing. When mixing concrete, the dust generated during the mixing process of cement, fine stones, etc., is discharged into the air. Construction The noise and sewage generated during the process will cause environmental pollution
The method of using chemical grouting materials such as water glass slurry and epoxy resin for grouting reinforcement will also cause great harm to the environment.

Method used

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  • Microbial capsule applied to dangerous rock mass reinforcement and construction process
  • Microbial capsule applied to dangerous rock mass reinforcement and construction process
  • Microbial capsule applied to dangerous rock mass reinforcement and construction process

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Such as figure 2 and image 3 A microbial capsule applied to the reinforcement of dangerous rock mass is shown, the microbial capsule includes a capsule shell and core material particles; the capsule shell includes a shell 6, roots 10, and a channel pipe 7; the shell 6 Spherical, circular through-holes 8 are distributed on the housing 6, a hole film 9 is attached to the circular through-holes 8, a channel pipe 7 is arranged on the upper surface of the housing 6, and a large circle of the spherical surface of the housing 6 is provided Several roots10.

[0054] Preferably, the core particle is composed of dry spore powder 13, nutrient substance 14 and calcium source substance 15; the capsule shell wraps the core particle to form a microbial capsule.

[0055] Further preferably, the dry spore powder 13 is one or more of Bacillus pasteurianus, Bacillus sarcina pasteurii, and Bacillus korsii.

[0056] Further preferably, the nutritional substance 14 includes peptone, bee...

Embodiment 2

[0065] combine Figure 4 and Figure 5 , the construction technique that embodiment 1 microbial capsule is applied to dangerous rock mass reinforcement, comprises the following steps:

[0066] When the weather conditions are continuous sunny days,

[0067] Step1: Use unmanned aerial vehicle equipment to carry out engineering geological survey, find out the scope and scale of dangerous rock mass 1 and the extension of cracks in dangerous rock mass, estimate the required filling amount and the size gradation of microbial capsules.

[0068] Step2: Prepare a corresponding number of microbial capsules and put them in a dry storage box for later use.

[0069] Step3: Set up the operation platform at the dangerous rock mass that needs to be treated, set up temporary support and safety protection devices, and evenly mix the sand, fiber and microbial capsules on site for future use.

[0070] Step4: For the tiny cracks (3) on the dangerous rock mass, drill holes along the direction of...

Embodiment 3

[0076] When running into rainy days during construction, the difference with embodiment 2 is:

[0077] Step6: During the period of periodic water supply to the capillary 11, in rainy days, if the precipitation ≥ 10.0mm / d, reduce the water flow of the capillary 11 to ensure the water demand at the bottom of the crack, and activate the microbial capsule through rainwater infiltrating into the crack, thereby Seal the cracks; if the rainfall is <10.0mm / d, the amount of water flowing into the tube remains unchanged, and an appropriate amount of water is periodically injected into the capillary 11, and the microbial capsules are activated by manually controlling the amount of water to effectively seal the cracks.

[0078] Adopt the construction technology that embodiment 1 microbial capsule is applied to dangerous rock mass reinforcement, combine Figure 6-8 , in order to illustrate the implementation effect of the present invention, especially carry out relevant test indoors and ca...

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Abstract

The invention relates to a microbial capsule applied to dangerous rock mass reinforcement and a construction process. The microbial capsule comprises a capsule shell and core material particles, wherein the capsule shell comprises a shell body, root hairs and a through groove pipe; the shell is spherical, circular through holes are distributed in the shell, hole films are attached to the circularthrough holes, a through groove pipe with a certain height is arranged on the upper top surface of the shell, and a plurality of hairs are arranged at the large circle of the spherical surface of theshell. The repair is realized by fully utilizing the natural mineralization effect of microorganisms, wherein the spherical shell is of a porous structure, so that the spore dry powder, nutrient substances and calcium source substances in the capsule can be ensured to be in full contact with external sand and fiber materials in the curing process, and the effective bonding of various media is promoted; the root hair on the outer side of the spherical capsule enables the microbial capsule to be better embedded into sand particles; meanwhile, the reinforcement effect is considered, the defect that a solidified body is obvious in brittleness is overcome, and the toughness and integrity of the solidified body are improved.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and in particular relates to a microbial capsule applied to the reinforcement of dangerous rock mass and a construction process. Background technique [0002] With the rapid development of the country, the number of road projects, large-scale and super-large water conservancy and hydropower projects constructed in mountainous areas is increasing day by day. Various dangerous rock masses with different geological properties are distributed in these engineering areas. Dangerous rock masses are potentially unstable rock masses, which are prone to topple, collapse, seat slip or slip under the action of external forces such as gravity, rainstorm, earthquake and construction. , is a typical slope geological disaster. [0003] At present, there are many control schemes for dangerous rock mass, and the following are mainly used: excavation and cleaning method, anchor bolt, anchor cable reinforcem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K17/14E02D3/12E02D15/00C09K103/00
CPCC09K17/14C09K17/40C09K2103/00E02D3/12E02D15/00E02D2200/1692E02D2300/0045
Inventor 邓华锋熊雨彭萌齐豫李涛
Owner CHINA THREE GORGES UNIV
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