Penetration type microorganism uniformly-cured sandy soil sample preparation device and sample preparation method thereof

Abstract

The invention discloses a penetration type microorganism uniformly-cured sandy soil sample preparation device. The penetration type microorganism uniformly-cured sandy soil sample preparation device comprises a capillary tube needle injection device, a microorganism solution pressure supplying device, a nutrient solution pressure supplying device and a liquid collection container, wherein the capillary tube needle injection device comprises a capillary tube needle and an organic glass splitting die; and the capillary tube needle is inserted into a sandy soil test sample to inject a microorganism solution. The microorganism solution pressure supplying device comprises a pressure controller and a solution isolation device, wherein the pressure controller carries out injection compression until the microorganism solution is injected into the capillary tube needle by the solution isolation device. The nutrient solution pressure supplying device comprises a water pump and a nutrient solution container; and the nutrient solution is pressurized by the water pump and then is injected to the sandy soil test sample from the bottom of the splitting die. After the microorganism solution and the nutrient solution are mixed, the mixed solution is discharged out from the top of the test sample to the liquid collection container; and meanwhile, calcium carbonate sediment generated by mixing the microorganism solution and the nutrient solution in the test sample can be used for reinforcing the sandy soil test sample. With the adoption of the penetration type microorganism uniformly-cured sandy soil sample preparation device, the calcium carbonate sediment can be relatively uniformly distributed in the sandy soil test sample.

Description

technical field [0001] The invention belongs to the field of microorganism-solidified sandy soil, and in particular relates to a needle-type microbial uniformly solidified sandy soil sample preparation device and a sample preparation method thereof. Background technique [0002] Mixing the microbial solution and the nutrient solution can produce calcium carbonate precipitation, which can strengthen the sandy soil. At present, in order to obtain a microbially solidified sand cylindrical sample, there are two methods: (1) The first method is to place the sand in a cylindrical container, and then alternately inject the nutrient solution and the microbial solution at the bottom of the container. The disadvantage of this method is that there are more calcium carbonate precipitates at the bottom of the sand cylinder than the top, and the calcium carbonate precipitates are easy to block the bottom of the sample; (2) The second method is to mix the sand with the microbial solution a...

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Problems solved by technology

[0003] In order to solve the problem of uneven solidification of sand and soil in the above-mentioned prior art, the present invention provides a needle-in-type device for making a cylindrical sample of microbial solidified sand and soil. Cylindrical samples, and the bacterial solution is injected into the round hole on the side of the capillary needle to obtain a relatively uniformly cured sandy soil cylindrical sample

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