CN116397630A - High-pressure jet grouting pile reinforcement technology suitable for red-layer soft rock landfill site - Google Patents
High-pressure jet grouting pile reinforcement technology suitable for red-layer soft rock landfill site Download PDFInfo
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- CN116397630A CN116397630A CN202310311285.XA CN202310311285A CN116397630A CN 116397630 A CN116397630 A CN 116397630A CN 202310311285 A CN202310311285 A CN 202310311285A CN 116397630 A CN116397630 A CN 116397630A
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- 239000011435 rock Substances 0.000 title claims abstract description 29
- 230000002787 reinforcement Effects 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title description 2
- 238000010009 beating Methods 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000005507 spraying Methods 0.000 claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 23
- 239000002689 soil Substances 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 15
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 238000005553 drilling Methods 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 5
- 239000002734 clay mineral Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
The application relates to the technical field of building construction, and particularly discloses a high-pressure jet grouting pile reinforcement process suitable for a red layer soft rock landfill site, which comprises leveling and compacting of red layer soft rock, driving of a jet grouting drill rod to descend through a lifting mechanism, jetting of high-pressure water to cut soil and grouting of slurry. In the process, the reinforcing mechanism can flap and reinforce the inner wall of the hole, so that the possibility of collapse of the hole under the cutting of high-pressure water is reduced. Meanwhile, the measuring mechanism can measure the reaction force fed back by the inner wall of the hole during beating, so that different geological layers where the rotary spraying drill rod is located are judged, different gears are controlled to be adjusted by the high-pressure water pump, the cutting capacity of the high-pressure water can be changed according to the soil structure strength of different geological layers, the constructed rotary spraying pile is as consistent as possible with the design, and the construction error of the constructed rotary spraying pile is reduced, so that the structural strength of the rotary spraying pile is ensured.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a high-pressure jet grouting pile reinforcement process suitable for a red layer soft rock landfill site.
Background
The high pressure injection grouting method is to drill a drill pipe with a slurry nozzle and a high pressure water nozzle into a preset position of a soil layer by using a drilling machine, then spray water from the nozzle by using high pressure equipment, and punch, disturb and destroy soil mass, thereby forming holes with designed size. When the drill rod drills to the designed elevation, the drill rod is gradually lifted at a certain speed, the slurry nozzle sprays slurry, and after the slurry is solidified, a cylindrical consolidated body (i.e. a jet grouting pile) is formed in the soil, so that the aims of reinforcing the foundation or stopping water and seepage are fulfilled.
The red layer soft rock is a clastic sedimentary rock stratum taking red as a main tone in appearance, clay minerals contained in the red layer soft rock are easy to disintegrate when meeting water, and in the process of reinforcing a red layer soft rock landfill site by adopting a high-pressure injection grouting method, the ejected slurry or water can cut and destroy soil bodies, and the clay minerals in the red layer soft rock are easy to disintegrate when meeting water, so that the soil bodies in holes collapse, and the volume and the sectional area of the dug holes are changed;
in the process of excavation, because geological layers with different depths are different, the geological layers with different structural strength are different through a powdery clay layer, a mud-containing fine sand layer, a gravel pebble layer and the like from top to bottom, and the strength of high-pressure jet flow sprayed out from a nozzle is unchanged, so that the damage degree of the high-pressure jet flow to the geological layers with different structural strength is different. Under the same high-pressure jet intensity, the jet damages the geological layers with weak structural intensity to a greater extent, so that the diameters of holes cut by different geological layers are different.
By combining the two points, the sizes of the cut holes are different, so that the shape and the volume of the formed consolidated body are greatly different from the design size, and the structural strength of the consolidated body is influenced.
Disclosure of Invention
In order to improve the structural strength of the consolidated body after construction is completed, the application provides a high-pressure jet grouting pile reinforcement process suitable for a red-layer soft rock landfill site.
The application provides a high-pressure jet grouting pile reinforcement process suitable for red layer soft rock landfill sites, which adopts the following technical scheme:
a high-pressure jet grouting pile reinforcement process suitable for a red layer soft rock landfill site comprises the following steps:
s1: leveling and compacting the red layer soft rock landfill site, installing a drilling machine at a preset construction site, and adjusting the inclination of a drill rod to be vertical to the ground;
s2: the rotary spraying drill rod is driven to descend through the lifting mechanism, the rotary spraying drill rod is driven to rotate through the driving mechanism, the high-pressure water pump is started, and the rotary spraying drill rod is enabled to jet high-pressure water to cut soil while rotating downwards, so that holes for grouting are formed;
the rotary spraying drill rod is provided with a reinforcing mechanism for reinforcing the inner wall of the hole, and the rotary spraying drill rod can drive the reinforcing mechanism to beat and reinforce the inner wall of the hole in the rotating process;
the reinforcing mechanism is also provided with a measuring mechanism for measuring the reaction force generated by beating the inner wall of the hole, the measuring mechanism is communicated with an external control mechanism, and different geological layers where the end part of the rotary spraying drill rod is positioned are judged through different data, so that the high-pressure water pump is regulated to different gears;
s3: and the rotary jet drilling rod is drilled down to the designed elevation, a slurry pump is started, and meanwhile, the rotary jet drilling rod is lifted, so that slurry forms rotary jet piles in holes, and the stratum is reinforced.
By adopting the technical scheme, in the process of rotary jet drilling rod lower rod, the reinforcing mechanism can beat and reinforce the inner wall of the hole, so that the possibility of collapse of the hole under the cutting of high-pressure water is reduced;
when the rotary spraying drill rod is in beating reinforcement, the measuring mechanism can measure the reaction force fed back by the inner wall of the hole during beating, so that different geological layers where the rotary spraying drill rod is located can be judged;
the high-pressure water pump is controlled by an external control mechanism to adjust different gears, so that the cutting capacity of the high-pressure water can be changed according to the soil body structure strength of different geological layers, the constructed jet grouting pile is as consistent as possible with the design, and the construction error of the constructed jet grouting pile is reduced, so that the structural strength of the jet grouting pile is ensured.
Optionally, the strengthening mechanism in step S2 includes being fixed in the installation section of thick bamboo on elevating system lifting end, set up in a plurality of components of beating on the installation section of thick bamboo perisporium and set up in spout soon on the drilling rod perisporium just be used for driving the drive piece that beating the subassembly and beating the hole inner wall repeatedly.
Through adopting above-mentioned technical scheme, actuating mechanism drives and spouts the drill rod soon and rotate to make the actuating member drive and pat the subassembly and pat the inner wall of reinforcing to the hole, reduced the possibility that collapse appears in the hole inner wall after the high-pressure water cutting, made the shape and the design of follow-up jet grouting pile more accord with, ensured the stability of jet grouting pile construction quality.
Optionally, a plurality of beating openings are formed in the peripheral wall of the mounting cylinder, and a plurality of groups of beating assemblies are arranged corresponding to the beating openings; the beating assembly comprises a beating plate, a push rod and a reset piece, wherein the beating plate is in sliding clamping connection with the beating opening, the push rod is fixed on one side of the beating plate and stretches into the inner cavity of the mounting cylinder, the reset piece is used for driving the beating plate to reset, and the driving piece can drive the push rod to move towards the outer side of the beating opening.
By adopting the technical scheme, when the rotary jet drilling rod drives the driving piece to rotate, the driving piece drives the push rod to move, the push rod drives the beating plate to extend out of the beating opening, the inner peripheral wall of the hole is beaten and reinforced, and the beaten beating plate is reset under the action of the reset piece;
the rotary jet drilling rod always rotates, and the beating plate can be driven to repeatedly beat the inner wall of the hole, so that pile forming quality of the rotary jet pile is improved.
Optionally, the driving piece includes set up in a plurality of arc lugs on the drill rod outer peripheral wall that spouts soon, each arc lug is followed spout the circumference interval of drill rod soon is laid, the arc lug rotates the in-process and can drive the push rod tip removes.
Through adopting above-mentioned technical scheme, when the jet-grouting drill stem rotates, can drive arc lug and rotate together, arc lug promotes the push rod tip and removes to make the board of beating beat and carry out the beating to the hole inner peripheral wall and consolidate.
Optionally, the push rod tip is provided with the gyro wheel, the gyro wheel is under reset the effect of piece elasticity butt on the periphery wall of arc lug.
Through adopting above-mentioned technical scheme, when arc lug rotated, the drive gyro wheel that can be relaxed moved to drive the push rod and beat the board and remove.
Optionally, the roller is rotatably mounted at the end of the push rod.
By adopting the technical scheme, the arc-shaped convex blocks can drive the roller to move more easily.
Optionally, the measuring mechanism includes a plurality of pressure sensors disposed corresponding to each of the beating plates, the beating plates include an abutting plate and a pushing plate that are slidably inserted into each other, and the pressure sensors are disposed between the abutting plate and the pushing plate;
one side of the pushing plate is fixedly connected with the push rod, and an elastic piece for connecting the abutting plate and the pushing plate is arranged between the abutting plate and the pushing plate.
Through adopting above-mentioned technical scheme, the in-process of beating the board and beating the hole inner wall, the hole inner wall can give the opposite effort of butt board, makes butt board butt pressure sensor, pressure sensor detects pressure signal to with pressure signal transmission for outside control mechanism, control mechanism judges by different signals that the jet-grouting drill stem is located different geological strata, thereby adjusts high-pressure water pump to corresponding gear, makes the cutting ability of high-pressure water at different geological strata different, with this the hole size that makes the high-pressure water cut out at different geological strata unanimous.
Optionally, one side of the abutting plate, which faces away from the pushing plate, is in a curved surface, and is flush with the peripheral wall of the mounting cylinder.
Through adopting above-mentioned technical scheme for the butt plate is more adapted with the periphery wall of installation section of thick bamboo, makes the installation section of thick bamboo more smooth at the lower pole in-process.
Optionally, a limiting component for preventing and limiting the abutting plate is further arranged in the mounting cylinder.
Through adopting above-mentioned technical scheme, spacing subassembly can carry out anticreep spacing to the butt board, makes the butt board can not break away from each other with the installation section of thick bamboo at the in-process of beating the hole inner wall, has improved the installation stability of butt board in the work progress.
Optionally, a limiting groove for preventing falling and limiting is formed in the inner peripheral wall of the mounting barrel, the limiting assembly comprises a limiting piece arranged on the peripheral wall of the abutting plate and a buffer piece for buffering movement of the abutting plate, the limiting piece is slidably clamped in the limiting groove, and the buffer piece is located in the limiting groove and is respectively abutted with the inner wall of the limiting groove and the limiting piece.
Through adopting above-mentioned technical scheme, the locating part can slide along the spacing groove, and the spacing groove can carry out spacingly to the slip of locating part to carry out spacingly to the slip of butt board, at this in-process, the buffer can reduce butt board and pat the hole inner wall and appear damaging the possibility, has promoted the life of butt board.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the reinforcing mechanism can beat and reinforce the inner wall of the hole, so that the possibility of collapse of the hole under the cutting of high-pressure water is reduced;
2. the measuring mechanism can measure the reaction force fed back by the inner wall of the hole during beating, so that different geological layers where the rotary spraying drill rod is located are judged, different gears are controlled by the high-pressure water pump to be adjusted, the cutting capacity of the high-pressure water can be changed according to the soil body structure strength of different geological layers, the rotary spraying pile after construction is as consistent as possible with the design, and meanwhile, the construction error of the rotary spraying pile after construction is reduced, and the structural strength of the rotary spraying pile is guaranteed.
Drawings
Fig. 1 is a schematic view of the overall structure of a drilling machine in an embodiment of the present application.
FIG. 2 is a schematic view of a portion of the rotary jetting tool of FIG. 1 from a first perspective.
Fig. 3 is a cross-sectional view of the second view of the rotary jetting tool of fig. 2.
Reference numerals: 1. a drilling machine; 11. a lifting mechanism; 12. a driving mechanism; 2. a reinforcement mechanism; 21. a mounting cylinder; 211. beating the mouth; 22. beating the assembly; 221. beating the plate; 2211. an abutting plate; 2212. a pushing plate; 222. a push rod; 223. a reset member; 23. a driving member; 3. an elastic member; 4. a roller; 5. a limit component; 51. a limiting piece; 52. a buffer member; 6. a limit groove; 7. and a measuring mechanism.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a high-pressure jet grouting pile reinforcement process suitable for a red layer soft rock landfill site, which comprises the following steps:
s1: leveling and compacting the red layer soft rock landfill, installing the drilling machine 1 at a preset construction site, and adjusting the inclination of the drill rod to be vertical to the ground;
s2: the rotary spraying drill rod is driven to descend through the lifting mechanism 11, the rotary spraying drill rod is driven to rotate through the driving mechanism 12, the high-pressure water pump is started, and the rotary spraying drill rod is enabled to jet high-pressure water to cut soil while rotating downwards, so that holes for grouting are formed;
the rotary spraying drill rod is provided with a reinforcing mechanism 2 for reinforcing the inner wall of the hole, and the rotary spraying drill rod can drive the reinforcing mechanism 2 to beat and reinforce the inner wall of the hole in the rotating process;
the reinforcing mechanism 2 is also provided with a measuring mechanism 7 for measuring the reaction force generated by beating the inner wall of the hole, the measuring mechanism 7 is communicated with an external control mechanism, and different geological layers where the end part of the rotary spraying drill rod is positioned are judged through different data, so that the high-pressure water pump is regulated to different gears;
s3: and the rotary jet drilling rod is drilled down to the designed elevation, a slurry pump is started, and meanwhile, the rotary jet drilling rod is lifted, so that slurry forms rotary jet piles in holes, and the stratum is reinforced.
Because red layer soft rock is easy to collapse when meeting water and the structural strength of different geological layers is different, holes cut by high-pressure water are easy to collapse in the process of rotary jet drilling rod lower rod, and under the condition of the same water pressure, the damage degree of the high-pressure water to geological layer soil bodies with different structural strengths is different, and the sizes of the cut holes are different from the design sizes, so that the structural strength of the cast rotary jet pile cannot meet the construction requirement.
In the process of rotating the rotary jet drill rod to lower the rod, the reinforcing mechanism 2 is driven to beat and reinforce the inner wall of the cut hole, the occurrence of collapse of the inner wall of the hole when meeting water is reduced, and in the beating process, the measuring mechanism 7 can measure the reaction force generated by beating the side wall of the hole and transmit the reaction force to an external control mechanism;
the control mechanism can judge which geological layer the rotary jet drilling rod is positioned in through the data size, so that the high-pressure water pump is controlled to adjust to different gears, the force of water sprayed by the high-pressure water pump is reduced when the rotary jet drilling rod is positioned in the geological layer with low structural strength, and the force of water sprayed by the high-pressure water pump is greater when the rotary jet drilling rod is positioned in the geological layer with high structural strength;
the sizes of holes cut by the high-pressure water at different bottom layers are consistent, so that the size of the finally formed jet grouting pile is the same as the design size as far as possible, and the construction quality of the jet grouting pile is ensured.
As shown in fig. 1, the drilling machine 1 is stably installed on the construction ground, the lifting mechanism 11 arranged on the drilling machine 1 can drive the rotary spraying drill rod to lift, the driving mechanism 12 arranged on the lifting end of the lifting mechanism 11 can drive the rotary spraying drill rod to rotate, and the lifting mechanism 11 and the driving mechanism 12 can jointly realize rotary spraying drill rod rotation and lower rod. The rotary spraying drill rod is of a double-layer pipe structure, the inner layer pipe is used for pumping high-pressure water, and the outer layer pipe is used for pumping mud.
Specifically, as shown in fig. 2 and 3, the reinforcement mechanism 2 in step S2 includes a mounting cylinder 21, a flapping assembly 22 and a driving member 23, one end of the mounting cylinder 21 is fixedly mounted on the lifting end of the lifting mechanism 11 through a bolt, the mounting cylinder 21 is sleeved and mounted outside the rotary jet drill rod, the length direction of the mounting cylinder 21 is consistent with the length direction of the rotary jet drill rod, the lower end of the rotary jet drill rod extends out of the end part of the mounting cylinder 21, and the rotary jet drill rod end part is respectively provided with a high-pressure nozzle and a slurry nozzle;
the beating components 22 are provided with a plurality of groups, each group of beating components 22 is circumferentially distributed on the outer peripheral wall of the mounting cylinder 21, in other embodiments, the beating components 22 can also be randomly arranged on the outer peripheral wall of the mounting cylinder 21 at intervals, and the embodiment is only a preferred embodiment;
as shown in fig. 2 and 3, a plurality of beating openings 211 are circumferentially spaced apart on the outer peripheral wall of the mounting cylinder 21, a plurality of beating assemblies 22 are provided corresponding to the plurality of beating openings 211, and a driving member 23 is provided on the outer peripheral wall of the rotary spraying drill rod for driving the beating assemblies 22 to repeatedly beat the inner peripheral wall of the hole.
As shown in fig. 2 and 3, the beating assembly 22 includes a beating plate 221, a push rod 222 and a reset member 223, the beating plate 221 includes an abutting plate 2211 and a pushing plate 2212, and one side of the abutting plate 2211 facing away from the pushing plate 2212 is in a curved surface and is flush with the peripheral wall of the mounting cylinder 21;
as shown in fig. 2 and 3, an elastic member 3 for connecting the abutting plate 2211 and the pushing plate 2212 is arranged between the abutting plate 2211 and the pushing plate 2212, the elastic member 3 is a traction spring, the ends of the traction spring are respectively connected and fixed with the abutting plate 2211 and the pushing plate 2212, the abutting plate 2211 and the pushing plate 2212 are both slidably installed in the beating opening 211, and the measuring mechanism 7 is positioned between the abutting plate 2211 and the pushing plate 2212;
as shown in fig. 2 and 3, one end of the push rod 222 is welded and fixed with one side plate surface of the push plate 2212, the other side extends into the inner cavity of the installation cylinder 21, and the end part is rotatably provided with a roller 4; the driving piece 23 can drive the abutting plate 2211 to extend out of the beating opening 211, the reset piece 223 can drive the abutting plate 2211 to reset, the reset piece 223 is a reset spring, the reset spring is sleeved on the push rod 222, one end of the reset spring is fixed with a rod body of the push rod 222, the other end of the reset spring is fixed with the inner peripheral wall of the mounting cylinder 21, and the idler wheel 4 is elastically abutted on the driving piece 23 under the action of the reset spring;
as shown in fig. 3, a limiting component 5 for preventing and limiting the abutting plate 2211 is further disposed in the mounting cylinder 21, a limiting groove 6 for preventing and limiting the falling is formed in the inner peripheral wall of the mounting cylinder 21, and the limiting component 5 includes a limiting member 51 disposed on the peripheral wall of the abutting plate 2211 and a buffering member 52 for buffering the movement of the abutting plate 2211;
as shown in fig. 3, the limiting member 51 is a limiting rod, the limiting rod is slidably clamped in the corresponding limiting groove 6, and the buffer member 52 is a buffer spring, and the buffer spring is located in the limiting groove 6 and is respectively abutted against the inner wall of the limiting groove 6 and the limiting member 51. When the driving piece 23 drives the abutting plate 2211 to move, the buffer spring can buffer the limiting rod, so that the abutting plate 2211 can realize buffering in the process of beating the side wall of the hole, and the possibility of damage of the abutting plate 2211 in the beating process is reduced.
As shown in fig. 3, the driving member 23 includes a plurality of arc-shaped protruding blocks disposed on the outer peripheral wall of the rotary spraying drill rod, each arc-shaped protruding block is disposed at intervals along the circumferential direction of the rotary spraying drill rod, and the rotary spraying drill rod can drive the roller 4 to move in the process of driving the arc-shaped protruding block to rotate, and the roller 4 drives the push rod 222 to move, so as to drive the push plate 2212 to move, and the push plate 2212 pushes the abutting plate 2211 to move, so as to abut against the inner peripheral wall of the hole;
in this process, the inner peripheral wall of the hole applies a reverse force to the abutment plate 2211, and the abutment plate 2211 and the pushing plate 2212 abut against the measuring mechanism 7, so that the measuring mechanism 7 detects the magnitude of the force.
Specifically, as shown in fig. 3, the measuring mechanism 7 includes a plurality of pressure sensors correspondingly installed between the abutting plate 2211 and the pushing plate 2212, the plurality of pressure sensors are all electrically communicated with an external control mechanism, when the pressure sensors transmit detected pressure signals to the external control mechanism, the control mechanism analyzes the data signals, and the structural strength of a soil body is judged according to the magnitude of acting force, so that a geological layer where the rotary spraying drill rod is located is judged;
the high-pressure water pump is adjusted to different gears aiming at geological layers with different soil structural strengths, so that the high-pressure spray head can spray water with different pressures, holes with the same size can be cut out by the high-pressure spray head in different geological layers, the size of the finally poured and molded jet grouting pile is close to the design size, and the reinforcing quality is ensured.
The implementation principle of the high-pressure jet grouting pile reinforcement process suitable for the red layer soft rock landfill site is as follows: the reinforcing mechanism 2 can beat and reinforce the inner wall of the hole, so that the possibility of collapse of the hole under the cutting of high-pressure water is reduced;
meanwhile, the measuring mechanism 7 measures the reaction force fed back by the inner wall of the hole during beating, so that the geological layer where the jet grouting drill rod is located is judged, the high-pressure water pump is adjusted to different gears according to different geological layers, the cutting capacity of the high-pressure water can be changed according to the strength of soil structures of different geological layers, the size of the cut hole is consistent with the design size as much as possible, the construction error of the jet grouting pile after construction is reduced, the structural strength of the jet grouting pile is guaranteed, and the reinforcing quality of the jet grouting pile is improved.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. A high-pressure jet grouting pile reinforcement process suitable for a red layer soft rock landfill site is characterized in that: the method comprises the following steps:
s1: leveling and compacting the red layer soft rock landfill, installing a drilling machine (1) at a preset construction site, and adjusting the inclination of a drill rod to be vertical to the ground;
s2: the rotary spraying drill rod is driven to descend through the lifting mechanism (11), the rotary spraying drill rod is driven to rotate through the driving mechanism (12), the high-pressure water pump is started, and the rotary spraying drill rod is enabled to jet high-pressure water to cut soil while rotating downwards, so that holes for grouting are formed;
the rotary spraying drill rod is provided with a reinforcing mechanism (2) for reinforcing the inner wall of the hole, and the rotary spraying drill rod can drive the reinforcing mechanism (2) to flap and reinforce the inner wall of the hole in the rotating process;
the reinforcing mechanism (2) is also provided with a measuring mechanism (7) for measuring the reaction force generated by beating the inner wall of the hole, the measuring mechanism (7) is communicated with an external control mechanism, and different geological layers where the end part of the rotary spraying drill rod is positioned are judged through different data, so that the high-pressure water pump is regulated to different gears;
s3: and the rotary jet drilling rod is drilled down to the designed elevation, a slurry pump is started, and meanwhile, the rotary jet drilling rod is lifted, so that slurry forms rotary jet piles in holes, and the stratum is reinforced.
2. The high-pressure jet grouting pile reinforcement process suitable for red-layer soft rock fill sites according to claim 1, wherein the process comprises the following steps of: the reinforcing mechanism (2) in the step S2 comprises an installation cylinder (21) fixed on the lifting end of the lifting mechanism (11), a plurality of beating components (22) arranged on the peripheral wall of the installation cylinder (21) and a driving piece (23) arranged on the peripheral wall of the rotary spraying drill rod and used for driving the beating components (22) to repeatedly beat the inner wall of the hole.
3. The high-pressure jet grouting pile reinforcement process suitable for red-layer soft rock fill sites according to claim 2, wherein the process comprises the following steps of: a plurality of beating openings (211) are formed in the peripheral wall of the mounting cylinder (21), and a plurality of groups of beating assemblies (22) are arranged corresponding to the beating openings (211); the utility model discloses a device for fixing a piece of equipment, including beating subassembly (22), including slip joint beat board (221) in mouthful (211) of beating, be fixed in beat board (221) one side and stretch into push rod (222) in installation section of thick bamboo (21) inner chamber and be used for driving beat reset piece (223) that board (221) reset, driving piece (23) can drive push rod (222) to beat mouthful (211) outside and remove.
4. A high pressure jet grouting pile reinforcement process suitable for red layer soft rock fill sites according to claim 3, wherein: the driving piece (23) comprises a plurality of arc-shaped protruding blocks arranged on the peripheral wall of the rotary spraying drill rod, the arc-shaped protruding blocks are distributed at intervals along the circumferential direction of the rotary spraying drill rod, and the end part of the push rod (222) can be driven to move in the rotation process of the arc-shaped protruding blocks.
5. The high-pressure jet grouting pile reinforcement process suitable for the red-layer soft rock landfill according to claim 4, wherein the process comprises the following steps of: the end part of the push rod (222) is provided with a roller (4), and the roller (4) is elastically abutted on the peripheral wall of the arc-shaped convex block under the action of the reset piece (223).
6. The high-pressure jet grouting pile reinforcement process suitable for the red-layer soft rock landfill according to claim 5, wherein the high-pressure jet grouting pile reinforcement process comprises the following steps of: the roller (4) is rotatably mounted at the end of the push rod (222).
7. A high pressure jet grouting pile reinforcement process suitable for red layer soft rock fill sites according to claim 3, wherein: the measuring mechanism (7) comprises a plurality of pressure sensors arranged corresponding to the beating plates (221), the beating plates (221) comprise abutting plates (2211) and pushing plates (2212) which are in sliding connection with each other, and the pressure sensors are arranged between the abutting plates (2211) and the pushing plates (2212);
one side of the pushing plate (2212) is fixedly connected with the pushing rod (222), and an elastic piece (3) used for connecting the abutting plate (2211) and the pushing plate (2212) is arranged between the abutting plate and the pushing plate.
8. The high-pressure jet grouting pile reinforcement process suitable for red-layer soft rock fill sites according to claim 7, wherein the process comprises the following steps of: the abutting plate (2211) is arranged on one side, deviating from the pushing plate (2212), in a curved surface, and is flush with the outer peripheral wall of the mounting cylinder (21).
9. The high-pressure jet grouting pile reinforcement process suitable for red-layer soft rock fill sites according to claim 7, wherein the process comprises the following steps of: and a limiting assembly (5) used for limiting the abutting plate (2211) in an anti-falling way is further arranged in the mounting cylinder (21).
10. The high-pressure jet grouting pile reinforcement process suitable for red-layer soft rock fill sites according to claim 9, wherein the process comprises the following steps of: the utility model discloses a stopper is characterized by comprising a mounting barrel (21), a limiting groove (6) for preventing falling and limiting is formed in the inner peripheral wall of the mounting barrel (21), a limiting component (5) comprises a limiting piece (51) arranged on the peripheral wall of an abutting plate (2211) and a buffer piece (52) for buffering the movement of the abutting plate (2211), the limiting piece (51) is in sliding connection with the limiting groove (6), and the buffer piece (52) is arranged in the limiting groove (6) and is respectively in butt connection with the inner wall of the limiting groove (6) and the limiting piece (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310311285.XA CN116397630A (en) | 2023-03-24 | 2023-03-24 | High-pressure jet grouting pile reinforcement technology suitable for red-layer soft rock landfill site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310311285.XA CN116397630A (en) | 2023-03-24 | 2023-03-24 | High-pressure jet grouting pile reinforcement technology suitable for red-layer soft rock landfill site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116397630A true CN116397630A (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310311285.XA Pending CN116397630A (en) | 2023-03-24 | 2023-03-24 | High-pressure jet grouting pile reinforcement technology suitable for red-layer soft rock landfill site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116397630A (en) |
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2023
- 2023-03-24 CN CN202310311285.XA patent/CN116397630A/en active Pending
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