CN113216839A - Excavation-free targeted replacement device and method for local soft soil layer - Google Patents
Excavation-free targeted replacement device and method for local soft soil layer Download PDFInfo
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- CN113216839A CN113216839A CN202110504299.4A CN202110504299A CN113216839A CN 113216839 A CN113216839 A CN 113216839A CN 202110504299 A CN202110504299 A CN 202110504299A CN 113216839 A CN113216839 A CN 113216839A
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- soil layer
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- 239000002689 soil Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000005086 pumping Methods 0.000 claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims abstract description 11
- 239000004576 sand Substances 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims description 26
- 230000035939 shock Effects 0.000 claims description 18
- 239000006096 absorbing agent Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000009933 burial Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 abstract description 9
- 238000009412 basement excavation Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an excavation-free targeted replacement device and method for a local soft soil layer, and belongs to the field of foundation reinforcement treatment. Aiming at the problem of reinforcing a soft foundation with weak bearing capacity and poor integrity, drilling holes are formed in a soft soil layer, and a surrounding soft soil body is cut by high-pressure water flow to be mixed with water to form slurry; pumping out the slurry by using a pumping device and storing the slurry in a temporary storage bin; fine sand and cement are added into the device from the ground, and the newly added material is fully mixed with the slurry which is just pumped out to fill the excavation position. Finally, the soft soil is replaced by fine sand and cement materials, and a composite foundation is generated with the unreinforced part, so that the aim of improving the strength of the foundation is fulfilled, the equipment is simple, the construction period is shortened, the simplicity, the convenience and the high efficiency are realized, and the cost is low.
Description
Technical Field
The invention belongs to the technical field of teaching aids for moral and social courses, and particularly relates to an excavation-free targeted replacement device for a local soft soil layer.
Background
In recent years, with the rapid development of foundation treatment technologies, various forms of composite foundation technologies are beginning to be widely applied to civil engineering, building engineering and other projects, and compared with the traditional pile foundations, the treatment form of the composite foundation has many obvious advantages, namely lower cost, simple operation of composite foundation construction equipment and lower cost; the construction period is short, the composite foundation can improve the bearing capacity of the soft soil layer foundation in a large range, and has a large coverage surface, so that the foundation is prevented from being repeatedly treated, and the construction period is greatly shortened; thirdly, the application range is wide, and the reinforcing agent has good reinforcing effect on common soft soil such as silt, mucky soil, silt, blind ditch cavities and the like. The most representative of the existing composite foundations is cement mixing pile composite foundations, and in engineering application, the treatment of the composite foundations still has the following problems: the equipment needs to be disassembled and assembled for many times at different positions, the construction period is long, the construction process is complicated, and the construction cost is high.
Disclosure of Invention
The invention aims to provide an excavation-free targeted replacement device and method for a local soft soil layer, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an excavation-free targeted replacement device for a local soft soil layer comprises a circular tube, wherein the top of the circular tube is connected with a rotary lifting rod, and a high-pressure water delivery pipe, a slurry discharge pipe and a discharge pipe are arranged inside the circular tube;
the two high-pressure water delivery pipes are symmetrically arranged, the slurry discharge pipe and the blanking pipe are respectively arranged on two sides of the high-pressure water delivery pipe, the upper ends of the two high-pressure water delivery pipes are jointly connected with a high-pressure clean water pump, and the side surface of the lower part of each high-pressure water delivery pipe is provided with a plurality of high-pressure water nozzles;
the upper part of the slurry discharge pipe is provided with a slurry pumping pump, the lower end of the slurry discharge pipe is connected with a slurry pumping port, and the top of the slurry discharge pipe is connected with a temporary slurry storage bin;
the feed bin is connected to the upper end of unloading pipe, the discharge port of stirring storehouse is connected to the upper end of feed bin, the feed port of stirring storehouse is connected mud and is stored storehouse, fine sand storehouse and cement bin temporarily, the side of unloading pipe lower part is equipped with a plurality of side direction discharge gates.
Preferably, the bottom of the round pipe is provided with a vibrating head.
Preferably, a bottom discharge hole is formed in the bottom of the feeding pipe and penetrates through the vibrating head.
Preferably, be equipped with pressure buffer rod between high-pressure raceway, mud calandria and the unloading pipe, pressure buffer rod is used for separating high-pressure raceway, mud calandria and unloading pipe, avoids extrudeing each other, collides and causes the damage.
Preferably, the high-pressure water delivery pipe is also provided with a water pressure regulator.
Preferably, the discharging pipe is provided with a discharging pipe shock absorber, the pipe walls of the high-pressure water pipe, the slurry discharging pipe and the discharging pipe are provided with clamping grooves, a main shock absorber (8) is arranged between the clamping grooves of the pipe walls and the device shell, and a secondary shock absorber is arranged at the bottom of the slurry pumping port.
A replacement method of a local soft soil layer excavation-free targeting replacement device comprises the following steps:
firstly, geological exploration is carried out before construction, drilling exploration is carried out in a region of a soft soil layer to be replaced, and the burial depth position, the volume and the soil property of the soft soil layer are determined;
secondly, drilling by a drilling machine;
thirdly, adjusting and placing equipment, adjusting the water pressure according to the volume and soil characteristics of the soft soil layer, and placing a replacing device according to the burial depth of the soft soil layer;
fourthly, cutting the soil body by the high-pressure water jet, wherein the high-pressure water jet is sprayed out by the high-pressure water nozzle and rotationally cuts the surrounding soft soil body by the rotary lifting rod at the top of the displacement device to enable the soft soil body to be mixed with water to become slurry;
fifthly, discharging the slurry and filling the new material, pumping the slurry out through a slurry discharge pipe, fully mixing the slurry with the new material in a stirring bin, and then feeding the slurry into a side discharge hole of a discharge pipe to start filling, wherein the discharging speed of the slurry and the feeding speed of the new mixed material are kept equal;
sixthly, tamping and leveling, after the slurry is completely discharged, starting to lift the replacement device, opening the vibrating head at the moment, continuously filling the new material mixed with the slurry through a bottom discharge port on the blanking pipe, closing the bottom discharge port after the slurry is filled to a certain height, starting to tamp, opening the bottom discharge port again after the vibrating tamping is finished, continuously filling the new material, and tamping layer by layer in such a circulating manner;
and seventhly, recovering the device.
The invention has the technical effects and advantages that: drilling holes in a soft soil layer, and cutting the surrounding soft soil body through high-pressure water flow to mix the soil body with water to form slurry; pumping out the slurry by using a pumping device and storing the slurry in a temporary storage bin; fine sand and cement are added into the device from the ground, and the newly added material is fully mixed with the slurry which is just pumped out to fill the excavation position. Finally, the soft soil is replaced by fine sand and cement materials, and a composite foundation is generated with the unreinforced part, so that the aim of improving the strength of the foundation is fulfilled, the equipment is simple, the construction period is shortened, the simplicity, the convenience and the high efficiency are realized, and the cost is low.
Drawings
FIG. 1 is a schematic front view of a displacement device according to the present invention;
FIG. 2 is a schematic side view of the displacement apparatus of the present invention;
FIG. 3 is a schematic top view of the displacement apparatus of the present invention;
FIG. 4 is a schematic view of the feeding portion of the displacement apparatus according to the present invention;
FIG. 5 is a diagram showing the effect of soil replacement according to the present invention.
In the figure: 1. rotating the lifting rod; 2. a high-pressure clean water pump; 3. pumping a slurry pump; 4. a high-pressure water delivery pipe; 5. a temporary slurry storage bin; 6. a water pressure regulator; 7. a slurry discharge pipe; 8. a main shock absorber; 9. a high pressure water nozzle; 10. a secondary shock absorber; 11. a pressure buffer rod; 12. a slurry pumping port; 13. a lateral discharge hole; 14. a bottom discharge hole; 15. a vibrating head; 16. a discharging pipe; 17. a material tube damper; 18. a storage bin; 19. fine sand silo; 20. a cement bin; 21. and a stirring bin.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention provides an excavation-free target replacement device for local soft soil layers as shown in figures 1-5, which comprises a circular pipe, wherein the top of the circular pipe is connected with a rotary hoisting rod 1, a high-pressure water pipe 4, a slurry discharge pipe 7 and a discharging pipe 16 are arranged inside the circular pipe, the bottom of the circular pipe is provided with a vibrating head 15, and the vibrating head 15 is arranged at the lowest side of the high-pressure water pipe 4, the slurry discharge pipe 7 and the discharging pipe 16.
The high-pressure water pipe 4 is symmetrically provided with two slurry discharge pipes 7 and a discharge pipe 16 which are respectively arranged at two sides of the high-pressure water pipe 4, the upper ends of the two high-pressure water pipes 4 are jointly connected with the high-pressure clean water pump 2, the side surface of the lower part of the high-pressure water pipe 4 is provided with a plurality of high-pressure water nozzles 9, the high-pressure water pipe 4 is also provided with a water pressure regulator 6, and the water pressure regulator 6 is used for regulating water pressure.
The mud pumping pump 3 is arranged at the upper part of the mud discharging pipe 7, the lower end of the mud discharging pipe 7 is connected with the mud pumping port 12, the mud pumping port 12 is a straight pipe, the middle part of the mud pumping port is communicated with the lower end of the mud discharging pipe 7, mud can be sucked at two ends of the mud discharging pipe, and the top of the mud discharging pipe 7 is connected with the temporary mud storage bin 5.
The upper end of the blanking pipe 16 is connected with a stock bin 18, the upper end of the stock bin 18 is connected with a discharge port of a stirring bin 21, a feed port of the stirring bin 21 is connected with a slurry temporary storage bin 5, a fine sand bin 19 and a cement bin 20, and a plurality of lateral discharge holes 13 are formed in the side face of the lower portion of the blanking pipe 16.
The bottom of the blanking pipe 16 is provided with a bottom discharge hole 14, the bottom discharge hole 14 penetrates through the vibrating head 15, the bottom discharge hole 14 is provided with a valve which is opened and closed, and the valve and the vibrating head 15 are respectively controlled, so that blanking and vibrating can be realized.
A material pipe shock absorber 17 is arranged on the discharging pipe 16, clamping grooves are formed in the pipe walls of the high-pressure water pipe 4, the slurry discharge pipe 7 and the discharging pipe 16, a main shock absorber 8 of the main shock absorber 8 is arranged between the clamping grooves in the pipe walls and the device shell, a secondary shock absorber 10 is arranged at the bottom of the slurry pumping port 12, the main shock absorber 8 and the secondary shock absorber 10 can be shock absorbers made of different materials such as springs, elastic rubber rings or hydraulic shock absorbers, the shock absorption effect is achieved, and the high-pressure water pipe 4, the slurry discharge pipe 7, the discharging pipe 16 and the slurry pumping port 12 are protected; the position department that just is located side direction discharge gate 13, high pressure water nozzle 9 on the pipe all sets up the breach for side direction discharge gate 13, high pressure water nozzle 9 can stretch out, set up the rubber packing ring at the top of breach, can protect each pipe of breach position, but also have sealed effect, avoid in sewage, mud etc. get into the pipe.
The invention also provides a replacement method of the excavation-free target replacement device for the local soft soil layer, which comprises the following steps:
firstly, geological exploration is carried out before construction, drilling exploration is carried out in a region of a soft soil layer to be replaced, and the burial depth position, the volume and the soil property of the soft soil layer are determined;
secondly, drilling by a drilling machine;
thirdly, adjusting and placing equipment, adjusting the water pressure according to the volume and soil characteristics of the soft soil layer, and placing a replacing device according to the burial depth of the soft soil layer;
fourthly, cutting the soil body by the high-pressure water jet, wherein the high-pressure water jet is sprayed out by the high-pressure water nozzle and rotationally cuts the surrounding soft soil body by the rotary lifting rod at the top of the displacement device to enable the soft soil body to be mixed with water to become slurry;
fifthly, discharging the slurry and filling the new material, pumping the slurry out through a slurry discharge pipe, fully mixing the slurry with the new material in a stirring bin, and then feeding the slurry into a side discharge hole of a discharge pipe to start filling, wherein the discharging speed of the slurry and the feeding speed of the new mixed material are kept equal;
sixthly, tamping and leveling, after the slurry is completely discharged, starting to lift the replacement device, opening the vibrating head at the moment, continuously filling the new material mixed with the slurry through a bottom discharge port on the blanking pipe, closing the bottom discharge port after the slurry is filled to a certain height, starting to tamp, opening the bottom discharge port again after the vibrating tamping is finished, continuously filling the new material, and tamping layer by layer in such a circulating manner;
and seventhly, recovering the device.
In the using process of the excavation-free target replacement device for the local soft soil layer, a high-pressure water nozzle 9 on a high-pressure water conveying pipe 4 is driven by a rotary lifting rod 1 to spray high-pressure water jet formed under the action of a high-pressure clean water pump 2 and a water pressure regulator 6 to rotatably cut the surrounding soft soil body and mix the soft soil body with water to form slurry, then a slurry discharge pipe 7 is utilized to discharge the slurry through a slurry discharge opening 12 under the action of a slurry discharge pump 3 and store the slurry in a slurry temporary storage bin 5, fine sand and cement are respectively added into a fine sand bin 19 and a cement bin 20 from the ground while the slurry is discharged by the slurry discharge pipe 7, and the newly added material and the discharged slurry are fully stirred in a stirring bin 21 and then are filled into the initial position of the soft soil body which is just cut to form slurry through a feed bin 18, a discharge pipe 16, a feed pipe shock absorber 17 and a lateral discharge hole 13, after the slurry is completely discharged, the replacement device is hoisted by the rotating hoisting rod 1, the bottom discharge port 14 is opened to fill the filling material continuously through the bottom discharge port 14 while the replacement device is hoisted, after the filling material is filled to a certain height, the vibrating head 15 is started to start vibrating and tamping, and after the vibrating and tamping is finished, the bottom discharge port 14 is opened again to fill the filling material continuously through the bottom discharge port 14 until the filling material is tamped to the ground elevation, so that the soil body replacement is finished.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. The utility model provides a local weak soil layer exempts from to excavate target replacement device, includes the pipe, rotatory jib (1), its characterized in that have been connected at the pipe top: the inside of the round pipe is provided with a high-pressure water delivery pipe (4), a slurry discharge pipe (7) and a blanking pipe (16);
the two high-pressure water delivery pipes (4) are symmetrically arranged, the slurry discharge pipe (7) and the discharge pipe (16) are respectively arranged on two sides of the high-pressure water delivery pipes (4), the upper ends of the two high-pressure water delivery pipes (4) are jointly connected with the high-pressure clean water pump (2), and the side surface of the lower part of the high-pressure water delivery pipe (4) is provided with a plurality of high-pressure water nozzles (9);
the upper part of the mud discharging pipe (7) is provided with a mud pumping pump (3), the lower end of the mud discharging pipe (7) is connected with a mud pumping opening (12), and the top of the mud discharging pipe (7) is connected with a mud temporary storage bin (5);
feed bin (18) is connected to the upper end of unloading pipe (16), the discharge gate of stirring storehouse (21) is connected to the upper end of feed bin (18), the feed gate of stirring storehouse (21) is connected mud and is stored storehouse (5), fine sand storehouse (19) and cement bin (20) temporarily, the side of unloading pipe (16) lower part is equipped with a plurality of side direction discharge gates (13).
2. The excavation-free targeted replacement device for the local soft soil layer as claimed in claim 1, wherein: the bottom of the round tube is provided with a vibrating head (15).
3. The excavation-free targeted replacement device for the local soft soil layer as claimed in claim 2, wherein: the bottom of the blanking pipe (16) is provided with a bottom discharge hole (14), and the bottom discharge hole (14) penetrates through the vibrating head (15).
4. The excavation-free targeted replacement device for the local soft soil layer as claimed in claim 1, wherein: be equipped with pressure buffer rod (11) between high-pressure raceway (4), mud calandria (7) and unloading pipe (16), pressure buffer rod (11) are used for separating high-pressure raceway (4), mud calandria (7) and unloading pipe (16), avoid extrudeing each other, collide to cause the damage.
5. The excavation-free targeted replacement device for the local soft soil layer as claimed in claim 1, wherein: and a water pressure regulator (6) is also arranged on the high-pressure water delivery pipe (4).
6. The excavation-free targeted replacement device for the local soft soil layer as claimed in claim 1, wherein: the device is characterized in that a material pipe shock absorber (17) is installed on the discharging pipe (16), clamping grooves are formed in the pipe walls of the high-pressure water pipe (4), the slurry pipe (7) and the discharging pipe (16), a main shock absorber (8) is installed between the clamping grooves in the pipe walls and the device shell, and a secondary shock absorber (10) is installed at the bottom of the slurry pumping opening (12).
7. The replacement method of the excavation-free targeted replacement device for the local weak soil layer of claim 1, characterized by comprising the following steps:
firstly, geological exploration is carried out before construction, drilling exploration is carried out in a region of a soft soil layer to be replaced, and the burial depth position, the volume and the soil property of the soft soil layer are determined;
secondly, drilling by a drilling machine;
thirdly, adjusting and placing equipment, adjusting the water pressure according to the volume and soil characteristics of the soft soil layer, and placing a replacing device according to the burial depth of the soft soil layer;
fourthly, cutting the soil body by the high-pressure water jet, wherein the high-pressure water jet is sprayed out by the high-pressure water nozzle and rotationally cuts the surrounding soft soil body by the rotary lifting rod at the top of the displacement device to enable the soft soil body to be mixed with water to become slurry;
fifthly, discharging the slurry and filling the new material, pumping the slurry out through a slurry discharge pipe, fully mixing the slurry with the new material in a stirring bin, and then feeding the slurry into a side discharge hole of a discharge pipe to start filling, wherein the discharging speed of the slurry and the feeding speed of the new mixed material are kept equal;
sixthly, tamping and leveling, after the slurry is completely discharged, starting to lift the replacement device, opening the vibrating head at the moment, continuously filling the new material mixed with the slurry through a bottom discharge port on the blanking pipe, closing the bottom discharge port after the slurry is filled to a certain height, starting to tamp, opening the bottom discharge port again after the vibrating tamping is finished, continuously filling the new material, and tamping layer by layer in such a circulating manner;
and seventhly, recovering the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110504299.4A CN113216839B (en) | 2021-05-10 | 2021-05-10 | Excavation-free targeted replacement device and method for local soft soil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110504299.4A CN113216839B (en) | 2021-05-10 | 2021-05-10 | Excavation-free targeted replacement device and method for local soft soil layer |
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| Publication Number | Publication Date |
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| CN113216839A true CN113216839A (en) | 2021-08-06 |
| CN113216839B CN113216839B (en) | 2022-06-14 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207484469U (en) * | 2017-11-16 | 2018-06-12 | 丁碧江 | One kind is used for the cured deep-layer stirring device of soft soil foundation |
| CN109763482A (en) * | 2018-11-13 | 2019-05-17 | 王琪 | A kind of Dam Foundation Strengthened in Situ weak soil stirs spray mixing drilling tool and construction method |
| CN110847150A (en) * | 2019-12-09 | 2020-02-28 | 冯清波 | Soft soil foundation treatment device and method |
| CN110952522A (en) * | 2019-12-03 | 2020-04-03 | 中交天津港湾工程研究院有限公司 | Double-spraying bidirectional cement mixing pile drill bit and construction method thereof |
| CN112030931A (en) * | 2020-08-17 | 2020-12-04 | 中交天津港湾工程研究院有限公司 | Deep foundation soft soil interlayer replacement and reinforcement method |
| CN112575773A (en) * | 2020-12-27 | 2021-03-30 | 陕西百骏千驹建设工程有限公司 | Construction method for spraying high-proportion cement into high-pressure jet grouting pile |
-
2021
- 2021-05-10 CN CN202110504299.4A patent/CN113216839B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207484469U (en) * | 2017-11-16 | 2018-06-12 | 丁碧江 | One kind is used for the cured deep-layer stirring device of soft soil foundation |
| CN109763482A (en) * | 2018-11-13 | 2019-05-17 | 王琪 | A kind of Dam Foundation Strengthened in Situ weak soil stirs spray mixing drilling tool and construction method |
| CN110952522A (en) * | 2019-12-03 | 2020-04-03 | 中交天津港湾工程研究院有限公司 | Double-spraying bidirectional cement mixing pile drill bit and construction method thereof |
| CN110847150A (en) * | 2019-12-09 | 2020-02-28 | 冯清波 | Soft soil foundation treatment device and method |
| CN112030931A (en) * | 2020-08-17 | 2020-12-04 | 中交天津港湾工程研究院有限公司 | Deep foundation soft soil interlayer replacement and reinforcement method |
| CN112575773A (en) * | 2020-12-27 | 2021-03-30 | 陕西百骏千驹建设工程有限公司 | Construction method for spraying high-proportion cement into high-pressure jet grouting pile |
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| CN113216839B (en) | 2022-06-14 |
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