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A method of controlling rock slope collapse by using microbial film and micp technology

A rock slope and microbial film technology, which is applied in the field of rock slope collapse, can solve the problems of low efficiency of crack reinforcement treatment, achieve the effect of improving treatment uniformity, improving treatment effect, and reducing the amount of bacterial solution

Active Publication Date: 2022-05-17
NANJING UNIV +1
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  • Abstract
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Problems solved by technology

[0006] Aiming at the problem of low treatment efficiency of crack reinforcement in the prevention and control of rock slope collapse in the prior art, the present invention provides a method for controlling rock slope collapse by using microbial grouting, inserting several injection grouts along the extension direction of rock mass cracks Slurry pipe and slurry outlet pipe, and use the bacterial solution containing flocculent biofilm for grouting. The flocculent biofilm can not only play a preliminary filling effect on the cracks, but also has good adhesion, which can quickly increase the crack surface. The number of attached bacteria reduces the amount of bacteria solution and the number of bacteria solution grouting, improves the grouting efficiency, and solves the problem of low processing efficiency of crack reinforcement in the prevention and control of rock slope collapse in the prior art

Method used

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  • A method of controlling rock slope collapse by using microbial film and micp technology

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Embodiment

[0042] Such as figure 1 As shown, this embodiment provides a method for strengthening cracks by microbial circulating grouting. The grouting pipe and the grouting pipe are respectively located on the upper crack and the side crack, and are connected by a grouting device. The grouting device injects the grout from the grouting pipe into the fracture surface with a certain pressure, and then the grout returns to the grouting device from the grouting pipes on both sides, and reciprocates in this way to form a flow cycle in the fracture surface. The specific steps are:

[0043] S100. Insert a number of grouting pipes into the upper cracks ab of the rock mass at intervals of 0.2-0.5m to a depth of 10-30cm; inject water directly into the cracks through the 1, 2, and 3 grouting pipes, and rely on gravity seepage and cracks Connectivity, confirm the cracks ac and bd of water seepage on the side, the water injection time depends on the site conditions; then also insert the slurry outl...

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Abstract

The invention discloses a method for controlling rock slope collapse by utilizing microbial film and MICP technology, and belongs to the technical field of collapse prevention and control. In the present invention, a number of grouting pipes and grouting pipes are first inserted along the extension direction of rock mass fissures, and then grouting is carried out with the bacterial solution containing flocculent biofilm, and the grouting pipes and grouting pipes are removed after the grouting is completed. And seal the grouting port and the grouting port with cement mortar. The invention greatly reduces the construction cost by introducing microbial film and circulating grouting, and improves the uniformity of crack surface treatment by introducing dredging liquid.

Description

technical field [0001] The invention belongs to the technical field of collapse prevention, and more specifically relates to a method for controlling rock slope collapse by utilizing microbial film and MICP technology. Background technique [0002] Rock slope collapse is a frequent geological disaster in my country, which is widely distributed, sudden and destructive. With the rapid development of my country's infrastructure, rock slope collapse has become a major mountainous geological disaster, seriously affecting engineering construction and safety, and causing heavy casualties and property losses every year. [0003] During the development of avalanches, rocky slopes often have penetrating failure fracture surfaces at the top of the slope. Therefore, the reinforcement of cracks is an important work in collapse prevention and control. At present, the anchoring method and the grouting method are often used to reinforce the cracks. The anchoring method is complex in cons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/20E02D15/02E02D3/12C12N1/20C12R1/07
CPCE02D17/20E02D15/02E02D3/12C12N1/20Y02A10/23
Inventor 唐朝生董志浩泮晓华王殿龙吕超章君政程青王浩
Owner NANJING UNIV
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