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Microbe reinforcing sand column grouting device and test method thereof

A technology of microorganisms and sand columns, which is applied in the direction of soil material testing, material inspection products, etc., to reduce the effect of unsatisfactory tests or even failures

Pending Publication Date: 2017-05-31
CHINA THREE GORGES 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 to provide a microbial reinforced sand column grouting device and its test method, which can solve the problem of microbial reinforced sand column grouting in the laboratory, realize visualization of the entire grouting process, and reduce the sand column being cemented due to uneven grouting Chances of non-uniformity making the experiment unsatisfactory or even failing

Method used

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  • Microbe reinforcing sand column grouting device and test method thereof
  • Microbe reinforcing sand column grouting device and test method thereof
  • Microbe reinforcing sand column grouting device and test method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] Such as Figure 1-12 As shown, a microbe-reinforced sand column grouting device includes a constant pressure funnel. The constant pressure funnel is in communication with a grouting nozzle 16 through a grouting hose, and the grouting nozzle 16 is in communication with the upper end of the glass sleeve 9;

[0036] In the grouting nozzle 16, the liquid inlet pipe 16-1 is connected with the spray plate body 16-2, the spray plate body 16-2 is equipped with a water outlet adjustment switch 8, and the spray plate body 16-2 is evenly distributed with a plurality of water outlet holes 7 , The water outlet hole 7 has a diameter of 1 mm, which is evenly distributed on the nozzle surface according to the diameter of the nozzle;

[0037] The barrel wall of the glass sleeve 9 is evenly distributed with a plurality of sleeve wall holes 10, the diameter of the sleeve wall hole 10 is 0.5 mm, the hollow sleeve cover 12 is matched with the two ends of the glass sleeve, the sleeve cover 12 A ...

Embodiment 2

[0045] A method for grouting test using the above microorganism-reinforced sand column grouting device, the method includes the following steps:

[0046] Step 1: Place the permeable stone 15 on the bayonet plug 14, press the upper surface of the permeable stone 15 into the bayonet plug 14 to make the plane level, and then clamp the bayonet plug 14 on the lower end of the glass sleeve 9;

[0047] Step 2: Put the rubber sleeve 11 on the outside of the glass sleeve 9 so that all sleeve cover holes 13 on the glass sleeve 9 are covered to prevent sand samples and grouting liquid from leaking out of the sleeve wall holes 10 and affect the test effect ;

[0048] Step 3: Inject a sand sample into the glass sleeve 9. After injecting the sand sample, place the permeable stone 15 on the sand sample so that the upper surface of the permeable stone 15 coincides with the upper end surface of the glass sleeve 9, and then grouting with silicone rubber The nozzle 16 and the glass sleeve 9 are glued ...

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Abstract

The invention relates to a microbe reinforcing sand column grouting device, which comprises a constant-pressure funnel, wherein the constant-pressure funnel communicates with a grouting spray head through a grouting hose; the grouting spray head communicates with the upper end of a glass sleeve; in the grouting spray head, a liquid inlet pipe communicates with a spray disc body; a water outlet hole regulating switch is arranged on the spray disc body; a plurality of water outlet holes are uniformly distributed in the spray disc body; a plurality of sleeve wall holes are uniformly distributed in the sleeve wall of the glass sleeve; a hollow sleeve cover is matched with two ends of the glass sleeve; a plurality of sleeve cover holes are uniformly distributed in the sleeve cover; a hollow clamp opening plug is matched with the lower end of the glass sleeve; a liquid discharging hole is formed in the middle part of the clamp opening plug; a liquid discharging pipe is connected onto the liquid discharging hole; a rubber sleeve is matched with the glass sleeve. The microbe reinforcing sand column grouting device and a test method thereof provided by the invention have the advantages that the problem of the laboratory microbe reinforcing sand column grouting problem can be solved; the visualization of the whole grouting process can be realized; the probability of unsatisfactory test result or even failure due to nonuniform bonding of the sand column because of the nonuniform grouting is reduced.

Description

Technical field [0001] The invention relates to the field of microbial reinforced sand column grouting, in particular to a microbial reinforced sand column grouting device and a test method thereof. Background technique [0002] The phenomenon of sand liquefaction is an important cause of tilting and collapse of water conservancy projects and civil engineering projects. The factors that affect sand liquefaction include seepage conditions, particle composition, degree of compactness, geological age of formation, stress conditions, and so on. The phenomenon of sandification of saturated sand is caused by the loosening of the loose sand framework due to vibration under unfavorable drainage conditions; the intergranular stress is gradually transferred to the pore water, which results in the continuous increase of pore water pressure. Therefore, to prevent the liquefaction of sand, the fundamental way is to eliminate the conditions for liquefaction. The most important measure is to in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 邓华锋肖瑶王伟张吟钗方景成张恒宾王晨玺杰
Owner CHINA THREE GORGES UNIV
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