CN112796295B - Method for extruding compact rock-soil body through soybean capsule air inflation - Google Patents

Abstract

The invention relates to the technical field of soil treatment, and provides a method for extruding compact rock and soil by inflation of soybean capsules. Mature soybeans are placed in a rubber capsule, water and an appropriate amount of bifidobacteria are added, and the rubber capsule is sealed. ; Place the sealed rubber capsule in the loose soil body or the rock and soil body with fissures arranged according to the set rules, and then backfill the drill hole; through the water absorption and expansion of soybeans, and the water absorption and swelling process of soybeans. The gas continuously expands the rubber capsule and squeezes the surrounding soil, so that the cracks in the soil are closed and the soil is dense. The method of the invention is particularly suitable for the emergency treatment of soil leakage water, and can also be applied to other projects requiring soil compaction. The method is simple and effective, with low cost and high popularization value.

Description

A kind of method of soybean capsule inflation extruding compact rock and soil mass

technical field

The invention relates to the technical field of soil treatment, in particular to a method for extruding compact rock and soil mass by inflation of soybean capsules, which is particularly suitable for emergency treatment of soil leakage and water.

Background technique

Loose soil will have a very negative impact on underground engineering and building foundation construction. Before the construction work, the loose soil layer needs to be compacted. The common soil compaction methods in engineering mainly include vibration compaction and compaction method. It refers to the use of blasting, ramming, extrusion and vibration to make the soil compact, which will increase the shear strength of the soil to a certain extent. However, this method has obvious limitations. The existing vibration and compaction methods cause serious damage to the original structure of the soil, and the original stress balance inside the soil is broken, requiring repeated surface compaction. Improve the overall strength of the soil. This method has complicated procedures and is only suitable for surface loose soil, and has no effective solution and compaction measures for deep underground loose rock and soil layers.

SUMMARY OF THE INVENTION

Aiming at the problem that the existing engineering technology cannot extrude and compact the deep underground rock and soil layer, the invention provides a method for extruding compacted rock and soil by soybean capsule inflation, which utilizes soybean water expansion and bifidobacteria to decompose oligosaccharides The expansion of a large amount of gas is released, so that the cracks in the rock and soil mass are closed and the soil mass is dense.

The present invention adopts following technical scheme:

A method for compacting rock and soil mass by inflation of soybean capsules. The method comprises the steps of placing mature soybeans in rubber capsules, adding water and an appropriate amount of bifidobacteria, and sealing the rubber capsules; sealing the sealed rubber capsules The capsule is placed in the loose soil body or the rock and soil body with cracks arranged according to the set rules; the rubber capsule is continuously expanded by the water expansion of soybeans and the gas generated in the process of water absorption and expansion of soybeans, squeezing the surrounding soil. The fissures in the soil are closed and the soil is dense.

Further, a variety of rubbers can be used for the rubber capsule, preferably cis-butadiene rubber, which has the advantages of good elasticity, aging resistance, corrosion resistance and the like.

Further, the size of the rubber capsule is determined through experiments according to the height of the soil to be compacted, the depth of the drilled hole, and the spacing between the drilled holes; the rubber capsule is densely placed in the drilled hole.

Further, the diameter of the rubber capsule is the same as or slightly smaller than the diameter of the drilled hole, and the length of the rubber capsule is 3m-5m. According to the actual situation of the project, one rubber capsule or several rubber capsules can be placed in a drilled hole.

Further, for the point-like seepage water and soil, drill holes at the seepage point, the depth of the hole is to the position of the seepage point and the distance h1 through the seepage point, the diameter of the hole is 75mm-150mm, and the rubber capsules sealed with soybeans are injected. Stacked from the bottom of the drilled hole to a distance h2 higher than the leakage point.

Further, h1 is 0.8-1.2m, and h2 is 1.2-1.8m.

Further, for the multi-point seepage water and soil body, drill holes from the leakage center from the inside to the outside according to the position of the leakage point, and place the sealed rubber capsules respectively.

Further, for surface seepage water, drill holes on the seepage surface, the depth of the hole is to the position of the seepage surface and the distance h3 through the seepage surface, the distance between the holes is 0.5m-1m, and the diameter of the holes is 75mm-150mm. The rubber capsules filled with soybeans and sealed are stacked from the bottom of the drilled hole to a distance h4 higher than the leakage surface.

Further, h3 is 1.5-2.5m, and h4 is 1.5-2.5m; multiple drilling holes are simultaneously injected into the sealed rubber capsule.

Further, the ratio of soybean, water and bifidobacteria in the sealed capsule is preferably 100:20:5. Other ratios can also be used according to the experimental results.

Further, the optimum growth temperature of bifidobacteria is 37-41°C, and the minimum growth temperature is 25-28°C.

The beneficial effects of the present invention are as follows: the soybean is used to absorb and swell in water, the volume increases, and a certain swelling effect is produced on the outer layer of the rubber capsule; in addition, the bifidobacteria contained in the water decompose the oligosaccharides contained in the soybean, A large amount of CO2, NH3 and other gases are released, so that the volume of the capsule continues to expand and increase, and the surrounding loose soil is squeezed, so that the cracks in the soil are closed and the soil is dense. The effect of compacting and loosening the rock and soil mass is achieved; the method of the invention is simple, effective, low in cost, and has extremely high popularization value.

Description of drawings

FIG. 1 is a schematic diagram of an application scenario of a method for extruding compact rock and soil mass by inflation of soybean capsules according to an embodiment of the present invention (soybeans are not inflated in rubber capsules).

Figure 2 shows a schematic diagram of soybeans after expansion in a rubber capsule.

In the figure, 1-crack; 2-soybean; 3-water (containing an appropriate amount of bifidobacteria); 4-rubber capsule; 5-hole.

Detailed ways

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be considered isolated, and they can be combined with each other to achieve better technical effects.

As shown in Figure 1, the embodiment of the present invention is a method for extruding compact rock and soil mass by inflation of soybean capsules. In the method, mature high-quality soybeans are placed in rubber capsules, and water and an appropriate amount of bifidobacteria are added to seal the soil. The rubber capsule; the sealed rubber capsule is placed in the loose soil body or the rock and soil body with cracks arranged according to the set rules; through the water absorption and expansion of soybeans, and the gas generated during the water absorption and expansion of soybeans makes the The rubber capsule expands continuously and squeezes the surrounding soil, so that the cracks in the soil are closed and the soil is dense.

In one embodiment, the rubber capsule is selected from cis-butadiene rubber with elasticity, good toughness, aging resistance, acid and alkali resistance.

In places with shallow soil layers, warm water with a temperature suitable for the growth of bifidobacteria should be injected into the rubber capsule, and the temperature of warm water is 37-41 °C; To grow, you do not need to use warm water. The stronger the activity of bifidobacteria, the more obvious the catalytic effect on soybean, the more significant the effect of compaction on soil.

Figure 2 is a schematic diagram of the soybean capsule type after inflation extrusion. Soybeans are always in a state of being soaked in water in the capsule. Water molecules enter the interior of the soybean structural gel through capillary action, and the hydrophilic colloid absorbs water and swells, resulting in the phenomenon of imbibition. The volume of soybeans expands, and the expansion coefficient is generally about 1.8 to 2.4. Soybeans are rich in oligosaccharides. Under the action of bifidobacteria, the oligosaccharides are decomposed to produce a large amount of CO2 and NH3, which are flooded in the sealed rubber capsules, which have a huge thrust on the soil on both sides, making the soil loose. The cracks contained in it gradually closed.

The practical application of the method of the present invention is described below through specific examples.

In a specific embodiment, the soil body has point water leakage. Drill holes at the leakage point. The depth of the hole should reach the leakage point and pass through the leakage point for 1m. The diameter of the hole is 75mm-150mm. The soybean is injected from the bottom of the hole to the leakage point and the leakage point will emerge 1.5 mm. m is appropriate, and the pressure of injected soybean is subject to compaction, and the pressure value is 1MPa-5MPa. For multiple spot leaks, treat them in sequence according to the above methods. For different point-like seepage of the same borehole, according to the above method, the point-like position should be carried out from the inside to the outside.

In another specific embodiment, the soil body has surface seepage water, and the seepage surface is drilled. The depth of the drill hole reaches the leakage point position and passes through the seepage surface 2m, and the drilling spacing is 0.5m- 1m, the diameter of the drill hole is 75mm-150mm, it is appropriate to inject soybeans from the bottom of the hole to the leakage surface and 2m from the leakage surface. When drilling, the holes can be drilled in sequence, and the soybeans are injected into the holes according to the method of simultaneous injection of different holes.

In the above embodiment, both the point-like seepage water and the plane-like seepage water are completely controlled, and the soil compactness meets the requirements for subsequent construction. The method of the invention is especially suitable for the emergency treatment of soil leakage water, has the effect of emergency pre-treatment and rapid treatment, and has the high-efficiency function of quickly sealing the leakage water. At the same time, the method of the present invention can also be extended to other projects that require soil compaction.

The method of the present invention adopts a reasonable ratio of soybean, water and bifidobacteria at a suitable temperature. The rubber capsule plays a role of gradual expansion within 1 hour after being put into the drilled hole, and the soil body reaches compaction within 3 hours, and the effect is quick, which is of great significance for emergency treatment. Low cost, simple construction, good effect, and has promotion value.

Although several embodiments of the present invention have been presented herein, those skilled in the art should understand that changes may be made to the embodiments herein without departing from the spirit of the present invention. The above-mentioned embodiments are only exemplary, and the embodiments herein should not be construed as limiting the scope of the rights of the present invention.

Claims (5)

1. a method for extruding compact rock and soil mass by inflation of soybean capsule, is characterized in that, described method is applicable to the emergency treatment of soil body seepage water; Described method is to put mature soybean in rubber capsule, add water and an appropriate amount of bifidobacteria, and then seal the rubber capsule; place the sealed rubber capsule in a drilled hole in loose soil or cracked rock and soil, and then backfill the drilled hole; The water-swelling action and the gas generated during the soybean water-swelling process make the rubber capsule expand continuously, squeeze the surrounding soil, so that the cracks in the soil are closed and the soil is compact; the size of the rubber capsule is based on the height of the soil to be compacted. , Drilling depth and drilling spacing are determined by experiments; the rubber capsules are densely placed in the drilling holes, and the drilling holes are densely filled with backfill soil; For point-like seepage water and soil, drill holes at the seepage point. The depth of the hole is to the position of the seepage point and the distance h1 is passed through the seepage point. The diameter of the hole is 75mm-150mm. The bottom of the hole is stacked to a distance h2 higher than the leakage point; h1 is 0.8-1.2m, h2 is 1.2-1.8m; the injection pressure of soybeans is subject to compaction, and the pressure value is 1MPa-5Mpa; For surface seepage water, drill holes on the seepage surface, the depth of the hole is to the position of the seepage surface and the distance h3 through the seepage surface, the distance between the holes is 0.5m-1m, the diameter of the holes is 75mm-150mm, and the soybean seal is injected. The rear rubber capsules are stacked from the bottom of the drilled hole to a distance h4 higher than the leakage surface; h3 is 1.5-2.5m, h4 is 1.5-2.5m; multiple drilling holes are simultaneously injected into the sealed rubber capsules; Standard, the pressure value is 1MPa-5MPa. 2 . The method for extruding compact rock and soil mass by inflation of soybean capsules as claimed in claim 1 , wherein the rubber capsule adopts butadiene rubber. 3 . 3. the method for extruding compact rock and soil mass by inflation of soybean capsule as claimed in claim 1, is characterized in that, the diameter of described rubber capsule is the same as or slightly smaller than the borehole diameter, and the length of rubber capsule is 3m-5m . 4. The method for extruding compact rock and soil mass by inflation of soybean capsules as claimed in claim 1, characterized in that, for multi-point seepage water and soil mass, drills are drilled sequentially from the inside to the outside according to the position of the seepage point from the seepage center holes, and each drilled hole is placed with a sealing rubber capsule. 5 . The method for extruding compact rock and soil mass by inflation of soybean capsules as claimed in claim 1 , wherein the ratio of soybean, water and bifidobacteria in the sealed capsule is 100:20:5. 6 .

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