CN109680696B - Sand slope supporting method - Google Patents
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- CN109680696B CN109680696B CN201910120262.4A CN201910120262A CN109680696B CN 109680696 B CN109680696 B CN 109680696B CN 201910120262 A CN201910120262 A CN 201910120262A CN 109680696 B CN109680696 B CN 109680696B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/11—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means
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- Life Sciences & Earth Sciences (AREA)
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- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a sandy soil side slope supporting method, which comprises the following steps: 1) constructing a concrete foundation pile; 2) laying longitudinal steel bars and transverse steel bars on the external surface of the sandy soil slope, and connecting the steel bar mesh with the adjacent concrete foundationWelding steel bars on the piles; 3) setting a first gradient within the range of 1.8-2 meters upwards from the bottom of the side slope, and curing the sandy soil layer with the first gradient; 4) solidifying the sandy soil layer with the second gradient above the sandy soil layer with the first gradient, wherein the sandy soil layer with the second gradient is 3.5 meters in height, and solidifying the sandy soil layer with the second gradient according to the solidifying mode of the sandy soil layer with the first gradient; 5) and repeating the step 4) until the remaining sand layer of the side slope is cured. The invention solidifies the sand and the steel bar net into a whole, and the chemical solution quickly reacts to generate CaCO with high strength after penetrating into the sand layer3Thereby enhancing the strength of the whole sand layer after solidification.
Description
Technical Field
The invention relates to a slope surface protection measure, in particular to a sandy soil side slope supporting method.
Background
The slope protection is a measure for protecting the slope in order to avoid the falling, the breaking, the scouring or the surface soil slipping and the like of the embankment and cutting slope exposed to the atmosphere and repeatedly acted by natural factors such as water, temperature, wind and the like.
The slope protection facilities do not bear the action of external force, and the slope rock soil is required to be integrally stable and firm. The height and the gradient of the simply protected side slope are not required to be too large, and the gradient of the soil side slope is generally not steeper than 1: 1-1: 1.5. The runoff speed of the ground water is preferably not more than 2.0m/s, and the water is not suitable to be converged intensively. When rainwater is concentrated or the catchment area is large, drainage facilities are matched, such as a catchment ditch arranged at the top of an excavation side slope, a water blocking ridge arranged at the edge of a road shoulder of a high fill, and the like.
Although research teams are currently researching sand consolidation techniques, the microorganism-induced calcium carbonate precipitation method, which is one of the biological mineralization processes widely existing in nature, is used for extracting the biological reactants (urea and NH) from the biological reactants according to the urea hydrolysis microorganism-induced calcium carbonate precipitation mechanism4 +The concentration of calcium ions), the concentration of catalysts (bacteria and urease) and the concentration of reactions (PH and temperature) hydrolyze the urea to produce calcium carbonate precipitates in the sand and subsequently solidify the sand, a process also known as biosolidation.
However, in the prior art, effective protection measures for sandy soil slopes are still lacked.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a sandy soil side slope supporting method.
In order to solve the technical problems, the invention adopts the following technical scheme:
a sandy soil slope supporting method comprises the following steps:
1) and (3) concrete foundation pile construction: sequentially arranging a plurality of rows of concrete foundation piles from bottom to top along the sandy soil side slope;
1.1) drilling a foundation pile hole along a sandy soil slope from bottom to top, wherein the foundation pile hole extends into a rock layer for 1.5-2 meters from a sandy soil layer on the surface layer; the foundation pile hole is an inclined hole with a low inner part and a high outer part, and the inclination angle of the foundation pile hole is 2-3 degrees;
1.2) installing a reinforcement cage in a foundation pile hole, and then pouring concrete;
2) laying longitudinal steel bars and transverse steel bars on the outer surface layer of the sandy soil slope at intervals of 1.5 meters, burying the longitudinal steel bars and the transverse steel bars in the sandy soil layer, welding the cross points to form a steel bar mesh, and welding the steel bar mesh with the steel bars on the adjacent concrete foundation piles;
3) upwards be first gradient from the side slope bottom within 1.8 ~ 2 meters's the scope, solidify the sand layer of first gradient:
3.1) uniformly drilling a plurality of water injection holes on a sand layer with a first gradient, wherein the depth of each water injection hole is the thickness of the sand layer, water injectors are installed in the water injection holes, the distance between every two adjacent water injectors is 0.5 m, each water injector comprises a water injection pipe I and a geotextile I wrapped on the water injection pipe I, a plurality of water outlet holes I are uniformly distributed on the water injection pipe I, an air pipe is arranged in the water injection pipe I, and a plurality of air guide holes are uniformly distributed on the air pipe;
3.2) laying a geotextile II on the sand layer with the first gradient, laying a layer of sealing film outside the geotextile II, arranging a pressurizing plate outside the sealing film, wherein the geotextile II, the sealing film and the pressurizing plate penetrate through corresponding concrete foundation piles, the sealing film is in sealing fit with the concrete foundation piles, the concrete foundation piles are provided with pressure devices for pressurizing the pressurizing plate, the water injection pipe I and the air pipe extend out of the geotextile II, the sealing film and the pressurizing plate, the part of the water injection pipe I penetrating through the sealing film is sealed by a sealing ring, and the sand layer with the first gradient is in a sealing state through the pressurizing plate; one end of the air pipe, which is positioned outside the sand layer, is bent and extends out of one side wall of the water injection pipe I, and the part of the air pipe, which extends out of the pipe wall of the water injection pipe I, is sealed;
3.3) horizontally arranging a water injection pipe II at the top of the pressurizing plate and on one side close to the sandy soil layer, and uniformly arranging a plurality of water outlet holes II on one side of the water injection pipe II close to the sandy soil layer;
3.4) connecting the air pipe with an air pump through a hose, injecting bacteria into the sand layer with the first gradient through a water injection pipe I and a water injection pipe II until the bacteria thoroughly moisten the whole sand layer with the first gradient;
3.5) injecting a chemical solution into the sandy soil layer with the first gradient through the water injection pipe I and the water injection pipe II to soak the sandy soil layer with the first gradient in the chemical solution, introducing air into the air pipe through the air pump, and introducing air into the chemical solution through the air guide hole to increase oxygen components, so that the aim of improving the catalytic reaction speed can be fulfilled; after the sand layer with the first gradient is soaked for 1.5 to 2.5 hours, the first-stage pressurization is carried out on the pressurizing plate through the pressure device, the pressure is 0.5 kilogram force/square centimeter, the first-stage pressurization time is 1.5 to 2 hours, then the second-stage pressurization is carried out on the pressurizing plate through the pressure device, the pressure is 0.7 kilogram force/square centimeter, the second-stage pressurization time is 2 to 2.2 hours, the third-stage pressurization is carried out on the pressurizing plate through the pressure device, the pressure is 0.8 kilogram force/square centimeter, and the pressure is kept after the third-stage pressurization; the chemical solution is prepared from urea and NH4 +And Ca2+Mixing and adding to a nutrient solution in the form of water;
3.6) after 10 days of reaction, after the sand layer of the first gradient is cured, removing the pressure device, the pressure plate, the sealing film, the geotextile II and the water injection pipe II;
4) solidifying the sandy soil layer with the second gradient above the sandy soil layer with the first gradient, wherein the sandy soil layer with the second gradient is 3.5 meters in height, and solidifying the sandy soil layer with the second gradient according to the solidifying mode of the sandy soil layer with the first gradient;
5) and repeating the step 4) until the sand layer of the whole side slope is solidified.
As a preferred embodiment of the present invention, the bacterium is Bacillus pasteurii.
As another preferable scheme of the present invention, the pressure device includes a pressure applying rod, a hydraulic cylinder and a pressure sensor, one end of the pressure applying rod is fixedly connected to the corresponding concrete foundation pile, a cylinder body of the hydraulic cylinder is fixed to the other end of the pressure applying rod, a piston rod of the hydraulic cylinder extends to the pressure plate, and the pressure sensor is disposed at a lower portion of the piston rod of the hydraulic cylinder and corresponds to the pressure plate.
Compared with the prior art, the invention has the following technical effects:
1. according to the invention, the reinforcing mesh is laid on the outer surface layer of the sandy soil side slope, the sandy soil and the reinforcing mesh form a whole after being cured, and meanwhile, the reinforcing mesh is connected with the concrete foundation pile, once the cured sandy soil layer is stressed and the stress is transmitted into the rock layer, the whole sandy soil side slope is firmer in structure after being cured, and the sandy soil side slope protection effect is optimal.
2. In the sand solidification process, equipartition sets up water injector and air hose on the sand layer, makes whole sand layer be in chemical solution, lets in a large amount of oxygen in to the sand layer through the air hose, can make the reaction more abundant, makes things convenient for nutrient solution, chemical solution to permeate to silt through geotechnological cloth in, produces a large amount of CaCO3So that the sand layer is effectively solidified. After the sand layer is solidified, the surface is smooth, the internal texture is uniform, and the strength is high.
Drawings
FIG. 1 is a schematic structural view of a sandy soil slope protection construction;
FIG. 2 is a schematic structural view of a reinforcement cage installed in a hole of a foundation pile;
FIG. 3 is a schematic view of the structure of the water injector;
fig. 4 is a schematic structural view of the press.
In the figure: 1-concrete foundation pile; 2-foundation pile hole; 3, a sandy soil layer; 4-rock layer; 5, a reinforcement cage; 6-longitudinal steel bars; 7-transverse steel bars; 8, a water injector; 9-water injection pipe I; 10-geotextile I; 11-water outlet hole I; 12-an air pipe; 13-gas-conducting hole; 14-geotextile II; 15-sealing the film; 16-a compression plate; 17-a pressure device; 18-water injection pipe II; 19-a pressure applying rod; 20-a hydraulic cylinder; 21-pressure sensor.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
A sandy soil slope supporting method comprises the following steps:
1) and (3) concrete foundation pile construction: sequentially arranging a plurality of rows of concrete foundation piles 1 from bottom to top along the sand slope, as shown in figure 1, and comprises the following specific steps;
1.1) drilling a foundation pile hole 2 along a sandy soil slope from bottom to top, wherein the foundation pile hole 2 extends into a rock layer 4 from a sandy soil layer 3 on the surface layer, and the extending depth is 1.5-2 m; the foundation pile hole 2 is an inclined hole with a low inner part and a high outer part, and the inclination angle of the foundation pile hole 2 is 2-3 degrees.
1.2) installing the reinforcement cage 5 in the foundation pile hole 2, and then pouring concrete, as shown in fig. 2.
2) And longitudinal steel bars 6 and transverse steel bars 7 are laid on the outer surface layer of the sandy soil slope at intervals of 1.5 meters, the longitudinal steel bars 6 and the transverse steel bars 7 are buried in the sandy soil layer 3, the cross points of the longitudinal steel bars and the transverse steel bars are welded to form a steel bar mesh, and the steel bar mesh is welded with the steel bars on the adjacent concrete foundation piles.
3) Upwards be first gradient from the side slope bottom within 1.8 ~ 2 meters's the scope, solidify the sand bed 3 of first gradient:
3.1) a plurality of water injection hole is bored to the equipartition on the sand layer 3 of first gradient, the degree of depth of water injection hole is sand layer 3's thickness, and at the downthehole installation water filler 8 of water injection, be separated by 0.5 meter between the adjacent water filler 8, water filler 8 includes water injection pipe I9 and the geotechnological cloth I10 of parcel on water injection pipe I9, (liquid and gas in the water injection pipe I9 can be unblocked get into the sand through geotechnological cloth I10 in, and geotechnological cloth I10 can prevent effectively that the sand from getting into water injection pipe I9 in), the equipartition sets up a plurality of apopores I11 on the water injection pipe I9, be provided with air hose 12 in the water injection pipe I9, the equipartition sets up a plurality of air guide.
3.2) laying a geotextile II 14 on the sandy soil layer 3 with the first gradient, laying a layer of sealing film 15 outside the geotextile II 14, arranging a pressurizing plate 16 outside the sealing film 15, enabling the geotextile II 14, the sealing film 15 and the pressurizing plate 16 to penetrate through the corresponding concrete foundation pile 1, enabling the sealing film 15 to be in sealing fit with the concrete foundation pile 1, arranging a pressure device 17 for pressurizing the pressurizing plate 16 on the concrete foundation pile 1, enabling the water injection pipe I9 and the air pipe 12 to extend out of the geotextile II 14, the sealing film 15 and the pressurizing plate 16, sealing the part of the water injection pipe I9 penetrating through the sealing film 15 by using a sealing ring, and enabling the sandy soil layer 3 with the first gradient to be in a sealing state through the pressurizing plate 16. The end of the air pipe 12 outside the sand layer 3 is bent and extended out from one side wall of the water injection pipe I9, and the part of the air pipe 12 extending out of the pipe wall of the water injection pipe I9 is sealed, as shown in figure 3.
3.3) a water injection pipe II 18 is horizontally arranged at the top of the pressurizing plate 16 and close to one side of the sand layer, and a plurality of water outlet holes II are uniformly distributed on one side of the water injection pipe II 18 close to the sand layer.
3.4) the air pipe passes through the hose to be connected with the air pump, injects the bacterium (bacterium selects for use pasteurella bacillus) into the sand bed 3 of first gradient through water injection pipe I9 and water injection pipe II 18, waits that the bacterium wets the sand bed 3 of whole first gradient thoroughly.
3.5) injecting a chemical solution into the sandy soil layer 3 with the first gradient through a water injection pipe I9 and a water injection pipe II 18 to soak the sandy soil layer 3 with the first gradient in the chemical solution, introducing air into the air pipe 12 through an air pump, and introducing air into the chemical solution through the air guide hole 13 to increase oxygen components, so that the aim of improving the catalytic reaction speed can be fulfilled; after the first gradient sandy soil layer 3 is soaked for 1.5 to 2.5 hours, the first stage pressurization is carried out on the pressurizing plate 16 through the pressure device 17, the pressure is 0.5 kilogram force/square centimeter, the first stage pressurization time is 1.5 to 2 hours, then the second stage pressurization is carried out on the pressurizing plate 16 through the pressure device 17, the pressure is 0.7 kilogram force/square centimeter, the second stage pressurization time is 2 to 2.2 hours, the third stage pressurization is carried out on the pressurizing plate 16 through the pressure device 17, the pressure is 0.8 kilogram force/square centimeter, and the pressure is kept after the third stage pressurization; the chemical solution is prepared from urea and NH4 +And Ca2+Mixed and added to the nutrient solution in the form of water.
3.6) after 10 days of reaction, after the sand layer 3 of the first gradient is cured, the pressure device 17, the pressure plate 16, the sealing film 15, the geotextile II 14 and the water injection pipe II 18 are removed.
4) And (3) solidifying the sandy soil layer 3 with the second gradient above the sandy soil layer 3 with the first gradient, wherein the sandy soil layer 3 with the second gradient is 3.5 meters in height, and solidifying the sandy soil layer 3 with the second gradient according to the solidifying mode of the sandy soil layer 3 with the first gradient.
5) And repeating the step 4) until the sand layer 3 of the whole side slope is completely cured.
In this embodiment, as shown in fig. 4, the press 17 includes a pressing rod 19, a hydraulic cylinder 20 and a pressure sensor 21, one end of the pressing rod 19 is fixedly connected to the corresponding concrete foundation pile 1, a cylinder body of the hydraulic cylinder 20 is fixed to the other end of the pressing rod 19, a piston rod of the hydraulic cylinder 20 extends toward the pressing plate 16, the pressure sensor 21 is disposed at a lower portion of the piston rod of the hydraulic cylinder 20 and corresponds to the pressing plate 16, the piston rod of the hydraulic cylinder 20 extends toward the pressing plate 16 and presses the pressing plate 16, and the applied pressure is obtained by the pressure sensor 21.
The chemical solution is prepared from urea and NH4 +And Ca2+Mixing, adding into water form nutrient solution, penetrating into sand layer 3, and reacting rapidly to generate CaCO with high strength3Thereby enhancing the strength of the whole sand layer after solidification.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (2)
1. A sandy soil slope supporting method comprises the following steps:
1) and (3) concrete foundation pile construction: sequentially arranging a plurality of rows of concrete foundation piles (1) from bottom to top along the sand slope;
1.1) drilling a foundation pile hole (2) from bottom to top along a sandy soil slope, wherein the foundation pile hole (2) extends into a rock layer (4) for 1.5-2 meters from a sandy soil layer (3) on the surface layer; the foundation pile hole (2) is an inclined hole with a low inner part and a high outer part, and the inclination angle of the foundation pile hole (2) is 2-3 degrees;
1.2) installing the reinforcement cage (5) in the foundation pile hole (2), and then pouring concrete;
2) longitudinal steel bars (6) and transverse steel bars (7) are laid on the outer surface layer of the sandy soil slope at intervals of 1.5 meters, the longitudinal steel bars (6) and the transverse steel bars (7) are buried in the sandy soil layer (3), cross points of the longitudinal steel bars and the transverse steel bars are welded to form a steel bar mesh, and the steel bar mesh is welded with steel bars on adjacent concrete foundation piles;
3) upwards be first gradient from the side slope bottom within 1.8 ~ 2 meters's the scope, solidify sand bed (3) of first gradient:
3.1) uniformly drilling a plurality of water injection holes on a sand layer (3) with a first gradient, wherein the depth of each water injection hole is equal to the thickness of the sand layer (3), water injectors (8) are installed in the water injection holes, the adjacent water injectors (8) are separated by 0.5 meter, each water injector (8) comprises a water injection pipe I (9) and a geotextile I (10) wrapped on the water injection pipe I (9), a plurality of water outlet holes I (11) are uniformly distributed on the water injection pipe I (9), an air pipe (12) is arranged in the water injection pipe I (9), and a plurality of air guide holes (13) are uniformly distributed on the air pipe (12);
3.2) laying a geotextile II (14) on the sand layer (3) with the first gradient, laying a layer of sealing film (15) outside the geotextile II (14), arranging a pressurizing plate (16) outside the sealing film (15), wherein the geotextile II (14), the sealing film (15) and the pressurizing plate (16) penetrate through the corresponding concrete foundation pile (1), the sealing film (15) is in sealing fit with the concrete foundation pile (1), the concrete foundation pile (1) is provided with a pressure device (17) for pressurizing the pressurizing plate (16), the water injection pipe I (9) and the air pipe (12) extend out of the geotextile II (14), the sealing film (15) and the pressurizing plate (16), the sealing ring is used for sealing the part of the water injection pipe I (9) penetrating through the sealing film (15), and the sand layer (3) with the first gradient is in a sealing state through the pressurizing plate (16); one end of the air pipe (12) positioned outside the sand layer (3) is bent and extends out of one side wall of the water injection pipe I (9), and the part of the air pipe (12) extending out of the pipe wall of the water injection pipe I (9) is sealed;
3.3) horizontally arranging a water injection pipe II (18) at the top of the pressurizing plate (16) and at one side close to the sandy soil layer, and uniformly arranging a plurality of water outlet holes II at one side of the water injection pipe II (18) close to the sandy soil layer;
3.4) connecting the air pipe with an air pump through a hose, injecting bacteria into the sand layer (3) with the first gradient through a water injection pipe I (9) and a water injection pipe II (18) until the bacteria thoroughly moisten the whole sand layer (3) with the first gradient; the bacteria are selected from pasteurella;
3.5) injecting a chemical solution into the sand layer (3) with the first gradient through a water injection pipe I (9) and a water injection pipe II (18), so that the sand layer (3) with the first gradient is soaked in the chemical solution, introducing air into the air pipe (12) through an air pump, and introducing air into the chemical solution through an air guide hole (13) to increase oxygen components, thereby achieving the purpose of improving the catalytic reaction speed; after the first-gradient sandy soil layer (3) is soaked for 1.5 to 2.5 hours, a first-stage pressurization is carried out on the pressurization plate (16) through a pressure device (17), the pressure is 0.5 kilogram force/square centimeter, the first-stage pressurization time is 1.5 to 2 hours, then a second-stage pressurization is carried out on the pressurization plate (16) through the pressure device (17), the pressure is 0.7 kilogram force/square centimeter, the second-stage pressurization time is 2 to 2.2 hours, then a third-stage pressurization is carried out on the pressurization plate (16) through the pressure device (17), the pressure is 0.8 kilogram force/square centimeter, and the pressure is kept after the third-stage pressurization; the chemical solution is prepared from urea and NH4 +And Ca2+Mixing and adding into water to form a nutrient solution;
3.6) after 10 days of reaction, after the sand layer (3) with the first gradient is cured, removing the pressure device (17), the pressure plate (16), the sealing film (15), the geotextile II (14) and the water injection pipe II (18);
4) solidifying the sandy soil layer (3) with the second gradient above the sandy soil layer (3) with the first gradient, wherein the sandy soil layer (3) with the second gradient is 3.5 meters in height, and solidifying the sandy soil layer (3) with the second gradient according to the solidifying mode of the sandy soil layer (3) with the first gradient;
5) and repeating the step 4) until the sand layer (3) of the whole side slope is cured.
2. The sandy soil side slope supporting method according to claim 1, characterized in that: the pressure device (17) comprises a pressure applying rod (19), a hydraulic cylinder (20) and a pressure sensor (21), one end of the pressure applying rod (19) is fixedly connected to the corresponding concrete foundation pile (1), the cylinder body of the hydraulic cylinder (20) is fixed to the other end of the pressure applying rod (19), the piston rod of the hydraulic cylinder (20) extends to the pressure plate (16), and the pressure sensor (21) is arranged on the lower portion of the piston rod of the hydraulic cylinder (20) and corresponds to the pressure plate (16).
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| CN201910120262.4A CN109680696B (en) | 2019-02-18 | 2019-02-18 | Sand slope supporting method |
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| CN201910120262.4A CN109680696B (en) | 2019-02-18 | 2019-02-18 | Sand slope supporting method |
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| CN112544292B (en) * | 2020-12-08 | 2022-06-21 | 铁汉山艺环境建设有限公司 | Self-eliminating type spiral root-expanding soil-fixing method for preventing water and soil loss of side slope |
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| CN106498928A (en) * | 2015-09-08 | 2017-03-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Liquid and its using method are reinforced in a kind of absorption enhancement mode microorganism for slope reinforcement |
| KR101654044B1 (en) * | 2015-11-30 | 2016-09-05 | (주)천지인 | Afforestation Method for face of slope Using plant soil compostion for afforestation |
| CN105649003A (en) * | 2016-01-11 | 2016-06-08 | 河海大学 | Reinforcing device for reinforcing sand foundation through combination of microorganisms with vacuum drainage and reinforcing method of reinforcing device |
| CN106884424A (en) * | 2017-04-10 | 2017-06-23 | 中国水利水电科学研究院 | A kind of device and construction method that microorganism solidification is carried out in thin silt |
| CN108049389A (en) * | 2017-11-20 | 2018-05-18 | 河海大学 | A kind of windproof microporous pipeline spray system and its application method fixed the sand for microorganism |
| CN108547307A (en) * | 2018-05-21 | 2018-09-18 | 北京交通大学 | Protecting slope ecology method based on artificial loam |
| CN108718586A (en) * | 2018-06-28 | 2018-11-02 | 广东工业大学 | A method of sand being cured by microorganism induction precipitation of calcium carbonate using regeneration calcium source |
| CN108999179B (en) * | 2018-08-13 | 2020-07-07 | 重庆科技学院 | Method for reinforcing and treating soft soil foundation by combining vacuum preloading and microorganism sand consolidation technology |
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