Phase-change microbial capsule grouting method for seepage prevention of fractured rock mass

A technology for fractured rock mass and microorganisms, which is applied in the field of phase-change microbial capsule grouting, and can solve the problem that microbial technology cannot be used in high and cold areas.

Pending Publication Date: 2021-02-05
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing microbial grouting technology is limited by the temperature required for the survival of microorganisms, and the perennial low temperature in the alpine region inhibits the growth and reproduction of microorganisms, so that the microbial technology cannot be used in the alpine region

Method used

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  • Phase-change microbial capsule grouting method for seepage prevention of fractured rock mass
  • Phase-change microbial capsule grouting method for seepage prevention of fractured rock mass
  • Phase-change microbial capsule grouting method for seepage prevention of fractured rock mass

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as Figure 1-7 Shown, a kind of phase-change microbial capsule grouting method that is used for anti-seepage of fracture rock mass comprises the following steps:

[0034] S 1 , Determine the position of the grouting hole on the rock mass fissure, and drill to form the grouting hole; S 2 , mixing the paraffin capsules and booster oil to obtain the first mixture; S 3 , mixing the microbial capsules with water to obtain a second mixture; S 4 1. Heating the first mixture so that the temperature of the first mixture is maintained at 35-40° C.; S 5 1. Continuously inject the second mixture into the fissures of the rock mass through the grouting device, and at the same time inject the first mixture intermittently into the fissures of the rock mass through the grouting device.

[0035] When using, first determine the position of the grouting hole on the rock mass, and the determination of the specific grouting hole position can refer to the empirical formula Among the...

Embodiment 2

[0037] Such as Figure 1-7 As shown, this embodiment is basically the same as Embodiment 1, the difference is that the grouting device includes a silo, and a partition is arranged in the silo, and the baffle divides the silo into the first liquid storage Box 1 and a second box body 2, the second box body 2 is provided with a heating device and a second liquid storage tank 3, the second mixture is added in the first liquid storage tank 1, and the first mixture is added In the second liquid storage tank 3, the first feed port and the first liquid outlet 4 communicated with the first liquid storage tank 1 are provided on the storage bin, and the second storage tank is provided with a The second feed port and the second liquid outlet 5 communicated with the liquid tank 3 are connected with the second liquid outlet 5 to be provided with an intermittent liquid supply device, and the intermittent liquid supply device can intermittently and quantitatively supply paraffin capsules and ...

Embodiment 3

[0040] Such as Figure 1-7 As shown, this embodiment is basically the same as Embodiment 2, the difference is that in the S 3 and S 4 Also includes step S between 35 , the step S 35 In order to use the stirring device to stir the water and the microbial capsule in the first liquid storage tank 1 to make it uniformly mixed, use the stirring device to stir the booster oil and the paraffin capsule in the second liquid storage tank 3 to make it uniformly mixed; wherein , the stirring device includes a driving motor 19, a central shaft 20, the central shaft 20 runs through the first liquid storage tank 1 and the second liquid storage tank 3, the driving motor 19 communicates with the central shaft 20, and is located in the first The central axes 20 of the liquid storage tank 1 and the second liquid storage tank 3 are provided with a plurality of stirring pieces 21 , and the stirring pieces 21 are provided with through holes 22 . Step S 5 When the first mixture starts grouting ...

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Abstract

The invention discloses a phase-change microbial capsule grouting method for seepage prevention of fractured rock mass. The method comprises the following steps of, S1, determining a grouting hole site on a rock mass fracture, and drilling to form a grouting hole; S2, mixing a paraffin capsule with boosting oil to obtain a first mixture; S3, mixing a microbial capsule with water to obtain a secondmixture; S4, heating the first mixture, and keeping the temperature of the first mixture at 35 - 40 DEG C; and S5, continuously injecting the second mixture into the rock mass fractures through a grouting device, and meanwhile, the intermittently injecting the first mixture into the rock mass fractures through the grouting device. The paraffin capsule and the boosting oil are used for storing heat in advance, then the first mixture and the second mixture are simultaneously and continuously injected into the rock mass fracture through the grouting device, liquid-solid phase change can be generated through precooling of the paraffin capsule, and heat is released, so that the effect of increasing the fracture temperature is achieved, a good environment is provided for microorganism growth, and rock mass seepage prevention in the alpine region is achieved.

Description

technical field [0001] The invention relates to the technical field of microbial grouting, in particular to a phase-change microbial capsule grouting method for anti-seepage of fractured rock mass. Background technique [0002] During the construction of underground projects such as tunnels and subways, cracks often develop in rock formations. The long-term continuous leakage of groundwater along the network of connected cracks in the surrounding rock will undoubtedly seriously threaten the reliability of the tunnel structure and the safety of operation. At the same time, if there is a hidden danger of leakage in the fissure zone where there are a large number of weak components such as clay and peat, long-term development may trigger the risk of water gushing and mud inrush accidents. Traditional anti-seepage grouting materials for underground engineering, such as cement mortar and chemical grout, have large particles and poor fluidity. For seepage rock masses with commonly...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D11/38
CPCE21D11/105E21D11/38
Inventor 郭亮彭颐祈刘丰威戴启辰王银帅李佳艺廖明伟何肖玉郭豪王保权
Owner SOUTHWEST PETROLEUM UNIV
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