CN108018851B - Longitudinal and transverse three-dimensional layered pressurizing and draining foundation treatment method - Google Patents
Longitudinal and transverse three-dimensional layered pressurizing and draining foundation treatment method Download PDFInfo
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- CN108018851B CN108018851B CN201711363451.1A CN201711363451A CN108018851B CN 108018851 B CN108018851 B CN 108018851B CN 201711363451 A CN201711363451 A CN 201711363451A CN 108018851 B CN108018851 B CN 108018851B
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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
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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Abstract
The invention discloses a method for treating a vertical and horizontal three-dimensional layered supercharging drainage foundation, which comprises the steps of drilling a vertical drainage body on the foundation to form a vertical drainage channel; after drilling, the rotary spraying equipment drills into the air guide rod and the air injection rod; the air compressor outputs high-pressure gas to the aerosol generating device to produce aerosol and then outputs the aerosol to the air injection rod; the aerosol is sprayed out from the three vertical rows of air injection holes to form a multilayer horizontal channel. The invention forms a vertical and horizontal drainage channel by adding a plurality of permanent vertical drainage bodies and temporary layered horizontal drainage layers into the foundation, the gas is easy to take water out from the drainage bodies, thereby forming positive and negative pressure difference between the vertical and horizontal channels and the external soil body, the soil layer to be treated is continuously drained to the vertical and horizontal channels, and the gas takes water out through the drainage bodies and circulates in a reciprocating way. The method is simple, can accelerate drainage and increase foundation treatment efficiency; the soil layer is treated uniformly, so that the non-uniform settlement after construction is effectively reduced; the construction period is shortened, and the construction cost is reduced.
Description
Technical Field
The invention relates to a longitudinal and transverse three-dimensional layered supercharging drainage foundation treatment method, which is particularly suitable for treating soft soil foundations and belongs to the technical field of geotechnical engineering.
Background
The soft soil is mostly distributed in the southeast coastal region in China, and the soft soil is divided into the following parts according to geological causes: deposition in the coastal environment. Sea-land excessive environment deposition (delta deposition), river environment deposition, lake environment deposition and swamp environment deposition. With the production development and the increasing population density of the human society, more and more soft soil is used as the building foundation. When soft soil is used as a foundation or for other purposes, the soft soil needs to be reinforced, and because the soft soil has the properties of high water content, high porosity ratio, high flow plasticity and the like, a drainage consolidation method is a common foundation treatment method aiming at the projects. But it has the characteristics of long construction period, high construction cost and complex construction operation. In order to improve the foundation treatment efficiency and improve the foundation treatment effect (accelerating the drainage of the foundation, improving the bearing capacity after construction and reducing the uneven settlement after construction), a new method for treating the soft soil foundation is urgently needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a vertical and horizontal three-dimensional layered supercharging and draining foundation treatment method aiming at the defects in the prior art, the method is simple, the draining can be accelerated, and the foundation treatment efficiency is greatly increased; the soil layer is treated uniformly, so that the non-uniform settlement after construction can be effectively reduced; the construction period is shortened, and the construction cost is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a longitudinal and transverse three-dimensional layered pressurizing and draining foundation treatment method comprises the following steps:
(1) a vertical drainage body is arranged in the foundation to be treated in a striking mode, so that a longitudinal drainage channel is formed in the foundation to be treated by the drainage body; laying a horizontal permeable layer on the surface layer of the foundation to be treated, laying a gravity loading layer on the top of the horizontal permeable layer, and embedding the top end of the drainage body in the horizontal permeable layer; digging a water collecting ditch at one side of the horizontal permeable layer, wherein the water collecting ditch is provided with a water pump;
(2) after the gravity load layer is laid in the step (1), drilling equipment is in place, a preset hole position penetrates through the gravity load layer and the horizontal permeable layer to drill a hole in a foundation to be treated, then an air guide rod of the rotary spraying equipment is drilled into the hole (2-4 holes can be simultaneously constructed), the tail end of the air guide rod is connected with a gas spraying rod, the gas guide rod is free of gas spraying holes, the gas spraying rod is provided with three rows of gas spraying holes which are parallel to each other, and the three rows of gas spraying holes are vertically distributed on the gas spraying rod;
(3) after the air guide rod and the air injection rod in the step (2) are drilled, connecting an air compressor and an aerosol generating device with rotary spraying equipment: connecting the input end of the aerosol generating device with the output end of an air compressor, and connecting the output end of the aerosol generating device with the input end of rotary spraying equipment;
(4) after the aerosol generating device, the air compressor and the rotary spraying equipment in the step (3) are connected, adding solid or liquid aerosol into the aerosol generating device, adding water, and then opening the air compressor, the aerosol generating device and the rotary spraying equipment; the air compressor outputs high-pressure gas to the aerosol generating device, solid or liquid aerosol is made into aerosol, and then the aerosol is output to an air guide rod of the rotary spraying equipment; the aerosol is sprayed out from three rows of air spraying holes vertically distributed on the air spraying rod in a rotating mode to form a plurality of layers of horizontal channels in the soil layer to be treated; water on two sides of the horizontal channel is discharged into the horizontal channel, flows into the vertical drainage body along the airflow direction, flows into the horizontal permeable layer upwards, then flows into the water collecting ditch, and finally is discharged to a designated place through the water pump;
the construction is carried out once to form three layers, the construction is carried out at each preset hole position more than once, after the construction is finished once, the rod piece can be lifted to the next depth, the next construction is continued, the three layers are formed, and the rest is done in the same way, and a plurality of layers of horizontal channels are formed around the preset hole positions.
In the above technical solution, in the step (1), the foundation to be treated is preferably a soft soil foundation to be treated.
In the above technical scheme, in the step (1), the drainage body is preferably any one of a drainage plate, a common sand well, a bagged sand well or a plastic vertical drainage body; if the drainage body is a drainage plate, the end part of the drainage plate with the length of 50cm-80cm is bent into 90 degrees and then is embedded into the horizontal permeable layer.
In the technical scheme, in the step (1), the horizontal permeable layer is a sand or gravel cushion layer, and is considered as a permeable layer in engineering due to the physical and mechanical properties of the sand or gravel; the thickness of the horizontal permeable layer is generally not less than 30cm, and the thickness is generally 30-60 cm.
In the technical scheme, in the step (1), the gravity loading layer is generally stacked and loaded by pond residues and is arranged above the horizontal permeable layer; the thickness can be properly reduced compared with a stacking preloading method, and the specific thickness is designed according to the processing requirement and is generally not less than 1 m.
In the above technical solution, in the step (1), the water collecting trench is generally disposed near a side line of the construction site (on one side of the horizontal permeable layer), and generally forms a passage with the horizontal permeable layer; the ditch has no specific requirement, and can be designed according to the estimated water yield, and the depth is 1.0-1.5 m, and the height is 1.0-1.5 m.
In the technical scheme, the drainage bodies are distributed in the foundation to be treated according to the vertex positions of a square or an equilateral triangle, and the density meets the specification requirement in the field; and the reserved hole site is positioned at the center of the square or the equilateral triangle.
In the above technical solution, in the step (2), the air guide rod and the air injection rod are connected into a whole through the internal thread, the air guide rod can be in a plurality of sections (the length of the air guide rod and the air injection rod is about 4m, and the air guide rod and the air injection rod need to be connected at a deep position, which is determined by the depth), and the air injection rod has only one section (the lowest section, and the depth is generally the starting position at the bottom of the drainage body and one meter upwards).
Among the above-mentioned technical scheme, in step (2), the gas spray rod, three rows of gas orifices that are parallel to each other have, three rows of gas orifices vertical distribution on the gas spray rod: the number of each row of air injection holes is consistent, and the positions are symmetrical; each row has two gas injection holes which are 180 degrees from each other, and the total number of the gas injection holes is 6, and the three rows of the gas injection holes are 120 degrees from each other in horizontal projection; the distance between the upper and lower rows of the air injection holes is 1m, and the aperture is 5 mm.
In the technical scheme, in the step (2), the air injection hole is externally provided with the one-way sheet, so that the phenomenon that the air injection hole is blocked due to the generation of counter flow when the air injection is stopped is avoided.
In the above technical scheme, in the step (4), the solid or liquid aerosol is preferably polyacrylamide, and the mass ratio of polyacrylamide to water is 1-10:10000, preferably 4-8:10000, and further preferably 6: 10000; the water drainage device is formed by linearly linking and combining organic molecules and inorganic molecules, has hydrophilicity, and can effectively combine free water in a soft soil layer so as to drain water to a drainage body along air flow; the aerosol solution forms aerosol gas through the aerosol generating device, and the aerosol has the effect of accelerating the drainage of soil and is environment-friendly.
In the technical scheme, in the step (4), the air compressor outputs high-pressure gas, according to engineering data, the size of the radius of the horizontal channel is related to the output pressure of the air compressor, and the most economic efficiency pressure is 1.2-1.6 MPa.
In the technical scheme, in the step (4), the rotary spraying equipment can horizontally spray the aerosol into the soil layer in a timed, constant-speed and multi-layering manner, the time is controlled to be 2-3 minutes each time, the rotating speed is controlled to be not more than 20 revolutions per minute, the spraying thickness of each layer is controlled to be not more than 30cm, and the distance between each layer is controlled to be 80-120 cm;
in geotechnical engineering, the physical properties of undisturbed soil are not damaged as much as possible, so that the thickness and the interlayer spacing of each layer are required, and the interlayer spacing of each layer can be regarded as the vertical spacing of the air injection holes; the aperture of each jet hole influences the thickness of each layer, and the aperture of 2-5 mm can meet the construction requirement; air compressor pressure generally affects the radius.
In the invention, the used equipment can be traditional, conventional and commercially available equipment in the field, for example, the rotary spraying equipment is high-pressure rotary spraying pile construction equipment, and the aerosol generating device is an industrial high-pressure atomizing container; the aerosol generating device is preferably the aerosol generating device in CN106869109A (2017101998095 is an aerosol generating device matched with a soft soil foundation disturbance treatment process); however, when the aerosol generating device is the device in the patent, because the aerosol generating device comprises the air compressor, the aerosol generating device does not need to be connected with an additional air compressor, and the output pressure of the air compressor of the device can be used within 1.2-1.6 MPa.
The invention relates to a longitudinal and transverse three-dimensional layered supercharging drainage foundation treatment method, which has the working principle that: through add a plurality of permanent vertical drainage bodies and interim layering level to the drainage blanket in to the ground, form vertical and horizontal three-dimensional drainage channel, high-pressure gas makes progress and takes out water from vertical drainage body to will form vertical and horizontal passageway in and external soil body positive and negative pressure differential promptly, layering pressure boost, because the continuation of positive and negative pressure differential exists, make pending soil layer constantly drainage to vertical and horizontal passageway, high-pressure gas takes out water through vertical drainage body again, reciprocal circulation.
The technical scheme of the invention has the advantages that: the method is simple, can accelerate drainage and greatly increase the foundation treatment efficiency; the soil layer is treated uniformly, so that the non-uniform settlement after construction can be effectively reduced; the construction period is shortened, and the construction cost is reduced.
Drawings
FIG. 1: a process flow diagram of the method of the invention;
FIG. 2: the plane schematic diagram of the air injection rod in the method of the invention during rotary spraying;
FIG. 3: the connection between the air guide rod and the air injection rod in the method is shown schematically;
FIG. 4: the schematic diagram of the air injection hole and the one-way sheet on the air injection rod in the method of the invention;
FIG. 5: a schematic view of the gas injection holes on the gas injection bar in the process of the invention;
FIG. 6: the horizontal projection of the gas injection hole on the gas injection rod in the method is schematic;
wherein: the device comprises an air compressor and an aerosol generating device 1, a rotary spraying device 2, an air guide rod 3, an air injection rod 4, a drainage body 5, an air injection hole 6, a horizontal channel 7, a foundation to be treated 8, a gravity loading layer 9, a horizontal permeable layer 10, a water collecting channel 11, a water pump 12, a rotating direction 13 and a one-way sheet 14.
Detailed Description
The following detailed description of the embodiments of the present invention is provided, but the present invention is not limited to the following descriptions:
in the following embodiments, the equipment used may be conventional, and commercially available equipment in the field, for example, the rotary spraying equipment is high-pressure rotary spraying pile construction equipment; the aerosol generating device is preferably an aerosol generating device in CN106869109A (2017101998095 is an aerosol generating device matched with a soft soil foundation disturbance treatment process), but when the aerosol generating device is the device in the patent, because the aerosol generating device comprises an air compressor, an additional air compressor is not required to be connected, and the air compressor output pressure of the device can be ensured to be 1.2-1.6 MPa.
Example 1:
a longitudinal and transverse three-dimensional layered pressurizing and draining foundation treatment method is shown in a flow chart of figure 1 and comprises the following steps:
(1) arranging vertical drainage bodies 5 in a soft soil foundation 8 to be treated, wherein the drainage bodies are SPB-B type drainage plates and are arranged in a square mode, the depth is 20m, and the distance is 1.0 m; after bending the 50cm long end of the SPB-B type drainage plate into 90 degrees, embedding the SPB-B type drainage plate into a horizontal permeable layer formed by a broken stone cushion layer on the surface layer of the soft soil foundation, wherein the thickness of the horizontal permeable layer is 50 cm; a gravity loading layer 9 is laid on the top of the horizontal permeable layer 10 and is used for carrying the pond residues in a heaping mode, and the thickness of the gravity loading layer is 1.5 m; digging a water collecting ditch 11 with the depth of 1.5 multiplied by the width of 1.0m at one side of the horizontal permeable layer; the water collecting ditch is provided with water pumps 12, and one water pump is arranged every 50 m; .
(2) After the gravity load is laid in the step (1), drilling equipment is put in place, as shown in fig. 2, the projection of the azimuth plane is a circle due to the influence of the jet radius of the jet hole rotary jet, and the preset hole position is the center position of the circle and is the center point of a geometric figure surrounded by 4 drainage bodies; drilling a hole in a foundation to be treated in a preset hole position through a gravity load and horizontal permeable layer, and then drilling an air guide rod 3 of a rotary spraying device 2 into the hole (2-4 holes can be simultaneously constructed), wherein the tail end of the air guide rod is connected with a spraying rod 4; after the air guide rod is drilled, the air guide rod can be separated from the drill bit by adopting a common method (the outer side of the pipe is clamped by using a vice jaw and a vice handle, and the machine is mechanically rotated), and if the length of the air guide rod does not reach the designed depth, the air guide rod is continuously connected; and if the design depth is reached, connecting the air injection rod.
The air guide rod 3 and the air injection rod 4 are connected into a whole through internal threads, as shown in FIG. 3; the air guide rod can be in multiple sections (the length of the air guide rod and the air injection rod is about 4m, and the air guide rod and the air injection rod need to be connected at a deep position according to the depth), and the air injection rod is only in one section (the lowest section, the depth is generally the starting position at the position one meter above the bottom of the drainage body); because only 3 layers can be processed at one time, after construction is finished each time, the rod piece is lifted to the next depth, and the construction is continued.
The air guide rod is provided with no air injection holes, the air injection rod is provided with three rows of parallel air injection holes 6, the number of the air injection holes in each row is consistent, the positions of the air injection holes in each row are symmetrical, and the three rows of air injection holes are vertically distributed on the air injection rod, as shown in figure 5; each row has two holes, 180 degrees from each other, and 6 holes in total, and three rows of gas injection holes are 120 degrees from each other in horizontal projection, as shown in FIG. 6; the distance between the upper and lower rows of the air injection holes is 1m, and the aperture is 5 mm. The unidirectional sheet 14 is arranged outside the air injection hole, and as shown in figure 4, the unidirectional sheet can avoid the phenomenon that the air injection hole is blocked due to the reverse flow generated when the air injection is stopped.
(3) After the air guide rod and the air injection rod in the step (2) are drilled, connecting an aerosol generating device 1 in CN106869109A with the input end of the rotary spraying equipment 2, wherein the aerosol generating device comprises an air compressor, so that the air compressor does not need to be additionally arranged;
(4) after the connection in the step (3) is finished, adding polyacrylamide into the aerosol generating device, and adding water, wherein the mass ratio of the polyacrylamide to the water is 6: 10000; making into aerosol by using the pressure (pressure is 1.6MPa) of an air compressor, and outputting the aerosol into an air guide rod of rotary spraying equipment; the aerosol is sprayed out from three rows of air spraying holes 6 vertically distributed on an air spraying rod to form a multilayer horizontal channel 7 in a soil layer 8 to be treated, the aerosol can be sprayed into the soil layer horizontally by a rotary spraying device in a timed, constant-speed and multi-layering mode, the time is controlled to be 2 minutes each time, the rotating speed is controlled to be 20 revolutions per minute, the thickness of each layer is controlled to be 20cm, and the distance between each layer is controlled to be 100 cm; water on two sides of the horizontal channel is discharged into the horizontal channel and flows to the vertical water discharging body 5 along the air flow direction; when the first layer of high-pressure gas is discharged through the vertical drainage body, vacuum negative pressure is formed, after the second layer and the third layer of high-pressure gas respectively rotate by 120 degrees and 240 degrees, the high-pressure gas is conveyed to the vertical drainage body (as shown in figure 2, three layers of horizontal drainage channels are formed each time, the first layer is the uppermost layer of the three layers, and the rotating direction 13 is selected according to the screwing direction of internal screw threads (connected between rod pieces)), so that three positive-negative pressure differences between the horizontal channels and the vertical drainage bodies and the soil layer to be treated are formed, and the effect of multiple pressurization is achieved. Water flows upwards from the 5 vertical drainage bodies to the 10 horizontal permeable layers, then flows into the 11 water collecting ditches, and finally is discharged to a designated place through the 12 water pumps;
after the construction according to the method of the invention, the method comprises the following three indexes: the method comprises the following steps of water pump drainage metering in a construction period (5 months), foundation settlement in the construction period and bearing capacity evaluation after construction: average daily water discharge of about 230m in construction period3About 1.5 times of the traditional method (the preloading method is carried out for 9 months under the same condition); the settlement of the foundation in the same area is about 1.5m, which is about 1.6 times of that of the traditional method (the preloading method is carried out for 9 months under the same condition); the average bearing force field after construction is about 8-10t, and is about 1.1-1.3 times of that of the traditional method (the preloading method is carried out for 9 months under the same condition).
The above examples are only for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. A longitudinal and transverse three-dimensional layered pressurizing and draining foundation treatment method is characterized by comprising the following steps:
(1) a vertical drainage body (5) is arranged in the foundation (8) to be treated in a drilling way, so that the drainage body forms a longitudinal drainage channel in the foundation to be treated; laying a horizontal permeable layer (10) on the surface layer of the foundation to be treated, laying a gravity loading layer (9) on the top of the horizontal permeable layer, and burying the top end of the drainage body in the horizontal permeable layer; a water collecting ditch (11) is dug at one side of the horizontal permeable layer, and a water pump (12) is arranged in the water collecting ditch;
(2) after the gravity load layer (9) is laid in the step (1), drilling equipment is in place, holes are drilled in the foundation to be treated through the gravity load layer and the horizontal permeable layer at a preset hole position, then an air guide rod (3) of the rotary spraying equipment (2) is drilled into the holes, the tail end of the air guide rod is connected with an air injection rod (4), the air guide rod is free of air injection holes, the air injection rod is provided with three rows of parallel air injection holes (6), and the three rows of air injection holes are vertically distributed on the air injection rod;
the air guide rod (3) and the air injection rod (4) are connected into a whole through internal threads; three rows of air injection holes (6) are formed in the air injection rod (4), and the number of the air injection holes in each row is consistent and the positions of the air injection holes are symmetrical; each row has two gas injection holes, 180 ° from each other, for a total of 6 holes; the distance between the upper and lower rows of the air injection holes is 1m, and the aperture is 5 mm; the air injection hole (6) is externally provided with a one-way sheet (14);
(3) after the air guide rod and the air injection rod in the step (2) are drilled, connecting the air compressor and the aerosol generating device (1) with the rotary spraying equipment (2): connecting the input end of the aerosol generating device with the output end of the air compressor, and connecting the output end of the aerosol generating device with the input end of the rotary spraying equipment (2);
(4) after the aerosol generating device, the air compressor and the rotary spraying equipment in the step (3) are connected, adding solid or liquid aerosol into the aerosol generating device, adding water, and then opening the air compressor, the aerosol generating device and the rotary spraying equipment; the air compressor outputs high-pressure gas to the aerosol generating device, solid or liquid aerosol is made into aerosol, and then the aerosol is output to an air guide rod of the rotary spraying equipment; the aerosol is sprayed out from three rows of air spraying holes vertically distributed on the air spraying rod in a rotating way to form a plurality of layers of horizontal channels (7) in the soil layer to be treated; water on two sides of the horizontal channel is discharged into the horizontal channel, flows into the vertical drainage body along the airflow direction, flows into the horizontal permeable layer upwards, then flows into the water collecting ditch, and finally is discharged to a designated place through the water pump;
the air compressor outputs high-pressure air, and the pressure is 1.2-1.6 MPa; the rotary spraying equipment horizontally sprays the aerosol into the soil layer at fixed time and speed for multiple times in a layered mode, the time is controlled to be 2-3 minutes each time, the rotating speed is controlled to be not more than 20 revolutions per minute, the spraying thickness of each layer is controlled to be not more than 30cm, and the distance between each layer is controlled to be 80-120 cm.
2. The method according to claim 1, characterized in that, in the step (1), the foundation (8) to be treated is a soft soil foundation to be treated; the drainage body (5) is any one of a drainage plate, a common sand well and a bagged sand well; the horizontal permeable layer (10) is a sand or gravel cushion layer; the gravity load layer (9) is formed by stacking pond residues.
3. The method as claimed in claim 2, wherein the drainage body is a drainage plate, and the drainage plate is embedded in the horizontal water-permeable layer after being bent at a length of 50cm to 80cm from the end thereof by 90 °.
4. The method according to claim 1, wherein in the step (1), the horizontal water-permeable layer (10) has a thickness of 30-60 cm; the thickness of the gravity load layer (9) is not less than 1 m; the depth of the water collecting ditch (11) is 1.0-1.5 m, and the height is 1.0-1.5 m.
5. A method as claimed in claim 1, wherein, in step (1), said drainage bodies (5), distributed according to the positions of the vertices of a square or equilateral triangle in the ground to be treated; in the step (2), the predetermined hole site is located at the center of the square or equilateral triangle.
6. The method according to claim 1, wherein in the step (4), the solid or liquid aerosol is polyacrylamide, and the mass ratio of polyacrylamide to water is (1-10): 10000.
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| CN109056694B (en) * | 2018-08-10 | 2021-05-18 | 吴慧明 | Method for treating dredger fill through combination of shearing pressurization and vacuum preloading |
| CN109667261A (en) * | 2019-01-28 | 2019-04-23 | 三峡大学 | Foundation-reinforcing device and method |
| CN109610437B (en) * | 2019-02-19 | 2021-03-02 | 吴慧明 | Rapid consolidation method for downward-drainage building slurry |
| CN111576387A (en) * | 2020-05-29 | 2020-08-25 | 中铁隧道局集团有限公司 | Soft soil foundation treatment method with large water content |
| CN111705780B (en) * | 2020-06-20 | 2021-10-26 | 吴慧明 | Gas explosion device |
| CN111705779B (en) * | 2020-06-20 | 2021-10-26 | 吴慧明 | Method for treating soft soil area foundation by deep layer gas explosion and ramming |
| CN111705778B (en) * | 2020-06-20 | 2021-10-15 | 吴慧明 | Gas explosion equipment |
| CN112176806B (en) * | 2020-10-16 | 2021-10-29 | 于胜泉 | Stable road soft foundation treatment method and matched soft foundation treatment construction system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106677156A (en) * | 2016-12-27 | 2017-05-17 | 吴慧明 | Method for conducting disturbance treatment on soft soil foundation through aerosol |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106677156A (en) * | 2016-12-27 | 2017-05-17 | 吴慧明 | Method for conducting disturbance treatment on soft soil foundation through aerosol |
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