CN117514197A - Reinforcement device for jet grouting and reinforcement method thereof - Google Patents
Reinforcement device for jet grouting and reinforcement method thereof Download PDFInfo
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- CN117514197A CN117514197A CN202311704098.4A CN202311704098A CN117514197A CN 117514197 A CN117514197 A CN 117514197A CN 202311704098 A CN202311704098 A CN 202311704098A CN 117514197 A CN117514197 A CN 117514197A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000002787 reinforcement Effects 0.000 title description 4
- 238000005553 drilling Methods 0.000 claims abstract description 115
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims description 33
- 239000002689 soil Substances 0.000 claims description 26
- 230000007246 mechanism Effects 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000007306 turnover Effects 0.000 claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 240000007643 Phytolacca americana Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a reinforcing device for rotary grouting and a reinforcing method thereof, comprising a vehicle body, wherein a frame capable of overturning is arranged on the outer side of the vehicle body, a rotary grouting drilling machine capable of horizontally displacing is arranged in the frame, a drill bit capable of lifting is arranged on a working part of the rotary grouting drilling machine, and the rotary grouting machine capable of realizing staggered operation of double drilling machines is arranged.
Description
Technical Field
The invention relates to the field of jet grouting, in particular to a reinforcing device and a reinforcing method of jet grouting.
Background
A rotary jet drilling machine (also called as rotary jet drilling tool) is a drilling tool for conveying slurry, compressed air, clean water and other mediums, and can ensure continuous dynamic tightness and static tightness under high-pressure working condition.
The single pipe rotary jetting grouting process includes setting special nozzle in the bottom of grouting pipe with drilling machine, setting soil layer to certain depth, jetting slurry from the nozzle to destroy soil body under 20MPa pressure, stirring and mixing the slurry with soil falling from the soil body, and setting for certain period of time to form fixed body in certain shape.
Single tube jet grouting is commonly used for reinforcing weak stratum. The jet grouting is to drill a drilling hole with the aperture of 50-127mm in the soil layer, and the slurry passes through a special nozzle with the diameter of 1.5-2.5mm through a drill rod to spray high-speed jet flow for cutting foundation soil. And mixing with grouting liquid, spraying while rotating, lifting, and finally cementing soil to form columnar consolidated body with maximum diameter up to 2 m. To improve the bearing capacity of the foundation. The rotary spraying can also be used for constructing underground impervious walls and other operations.
Therefore, according to different construction sites, the construction area is different, in order to ensure that the cylindrical concretes formed by grouting shaping have certain consistency, after each grouting, the mobile equipment needs to be carefully checked before going into the next position, so that deviation can be avoided, but due to different ground slopes, the situation that the gap sizes of the cylindrical concretes generated by the rotary grouting are different still occurs due to the influence of different ground slopes on the distance measurement length, and the adjustment process of each time is also not called troublesome, and in view of the problems, the reinforcing device and the reinforcing method of the rotary grouting are particularly provided.
Disclosure of Invention
The invention aims to provide a reinforcing device and a reinforcing method for jet grouting, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the reinforcing device for the jet grouting comprises a vehicle body, wherein a frame capable of overturning is arranged on the outer side of the vehicle body, a jet drilling machine capable of horizontally displacing is arranged in the frame, and a drill bit capable of lifting is arranged on a working part of the jet drilling machine;
the vehicle body comprises a travelling mechanism, a hopper is assembled at the top of the travelling mechanism, a turnover mechanism is assembled at the outer side of the hopper, and a main support frame is hinged at the outer side of the turnover mechanism;
the frame fixed mounting is in the outside of main support, the jet-grouting drilling machine includes the fixed track, fixed track sliding mounting is at the inner wall of frame, the inboard of fixed track is equipped with the telescopic link mutually perpendicular with fixed track displacement direction, the inboard of telescopic link is equipped with the second guide rail, the rig that the second guide rail outside is equipped with can go up and down.
Preferably, the side wall of the car hopper is hinged with a bracket, and the outer side of the bracket is provided with a telescopic support.
Preferably, the frame comprises a fixed beam, first guide rails are assembled on two sides of the fixed beam, first sliding blocks are assembled in the first guide rails in a sliding mode, and the first sliding blocks are assembled on the outer sides of the fixed rails.
Preferably, the telescopic rods are symmetrically arranged on the outer side of the fixed track, a pipeline is arranged on the top of the drilling machine, a drill pipe is arranged on the bottom of the drilling machine, and the tail end of the drill pipe is arranged on the top end of the drill bit.
Preferably, the drill bit comprises a connecting pipe, a connecting head is welded at the bottom end of the connecting pipe, a cutting blade is welded at the outer side of the connecting head, and a crushing head is welded at the tip part of the cutting blade.
Preferably, the cutting blades are of high-low oblique angle annular structures, and the number of the cutting blades is preferably 5.
Preferably, the cutting blades are annularly distributed, the top and the bottom of the connector are welded with annularly distributed cutting blades, and the cutting directions of the upper layer and the lower layer are opposite.
Preferably, the side wall, the top and the bottom of the connector are provided with spray holes.
A method of reinforcing a reinforcing apparatus for rotary jetting slurry, comprising the steps of:
step one: earlier stage preparation, namely exploring soil texture of a soil layer according to earlier stage drilling, setting a rotary spraying starting point and a same-direction end point according to the trend of the soil texture of the soil layer or the requirement of a drawing, opening a vehicle body to a straight line of a starting position according to the directions of the starting point and the end point, and positioning a rotary spraying drilling machine at one side;
step two: starting a drilling machine, namely starting the rotary jet drilling machine at one side in advance, driving a drilling pipe to drill downwards by the drilling machine after starting, gradually increasing the drilling pipe along with the increase of depth until the drilling bit reaches the required drilling depth, then starting a high-pressure injection system, rotating and recovering the drilling bit upwards, stirring and mixing high-pressure mortar or soil around the drilling hole in the process, and finally forming a fixed mortar cylinder;
step three: switching and starting, namely starting a second drilling machine to drill downwards when a first drilling machine drills downwards in place, wherein in the process of drilling downwards by the second drilling machine, the left drilling machine is in a state of upwards recovering and rotating spraying slurry, after the first drilling machine finishes spraying slurry, starting a telescopic rod to recover a second guide rail outwards after a drill bit is completely pulled out upwards, then starting the first guide rail to drive the first drilling machine to move to the next point of the second drilling machine, and starting drilling again after the movement is completed, and performing cyclic reciprocating operation;
step four: when the vehicle is moved and the double drilling machines drill holes at the same time after the switching operation is finished once, according to the maximum moving speed of the first guide rail, the running speed of the running mechanism of the vehicle body is adjusted to be synchronous, the running mechanism is started to drive the frame to move towards the next point along the line direction of the next point, in the process of displacement, the first guide rail drives the first sliding block to synchronously and reversely move at the same speed, and further, the vehicle body and the frame move forwards for a certain distance for the operation of rotating and spraying the drilling machines in a static state relative to the ground, and an operation allowance is provided for the next switching start until the frame is brought to the final drilling fixed point.
Compared with the prior art, the invention has the beneficial effects that: the rotary spraying grouting machine has the advantages that the rotary spraying grouting machine capable of realizing staggered operation of the double drilling machines is arranged, when the rotary spraying grouting machine is used, at least two drilling machines are mutually staggered for drilling and rotary spraying grouting, soft soil is reinforced, in the operation process, the two drilling machines are mutually staggered for operation, the vehicle body is matched with the allowance of the staggered operation of the drilling machines for operation towards the next reinforcing point, further long-distance continuous drilling operation can be realized, better continuity is realized, the efficiency of rotary spraying grouting is high, the use of a plurality of large-scale construction operations is facilitated, the problems that only one point position can be constructed by single grouting operation caused by the conventional rotary grouting operation of the egg drilling machine, deviation or steering is easy to occur when the point position is moved to the next point position, and the adjustment is troublesome are effectively solved.
Drawings
FIG. 1 is a schematic view of an angle-structure of the present invention;
FIG. 2 is a schematic view of an angle II structure of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic diagram of a rotary jetting mechanism according to the present invention;
FIG. 5 is a schematic view of a drill bit according to the present invention;
FIG. 6 is a top view of a drill bit of the present invention;
fig. 7 is a schematic view of the bottom view of the drill bit according to the present invention.
In the figure: 1. the device comprises a vehicle body, 11, a travelling mechanism, 12, a vehicle hopper, 13, a bracket, 14, a telescopic support, 15, a turnover mechanism, 16, a main support, 2, a frame, 21, a fixed beam, 22, a first guide rail, 23, a first sliding block, 3, a rotary spraying drilling machine, 31, a fixed rail, 32, a telescopic rod, 33, a second guide rail, 34, a drilling machine, 35, a pipeline, 36, a drill pipe, 4, a drill bit, 41, a connecting pipe, 42, a connector, 43, a cutting blade, 44, a crushing head, 45 and a spray orifice.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides a technical solution: the reinforcing device for the jet grouting comprises a vehicle body 1, wherein a frame 2 capable of overturning is arranged on the outer side of the vehicle body 1, a jet drilling machine 3 capable of horizontally displacing is arranged in the frame 2, and a drill bit 4 capable of lifting is arranged at the working part of the jet drilling machine 3;
the vehicle body 1 comprises a travelling mechanism 11, a vehicle hopper 12 is assembled at the top of the travelling mechanism 11, a turnover mechanism 15 is assembled at the outer side of the vehicle hopper 12, and a main support frame 16 is hinged at the outer side of the turnover mechanism 15;
the frame 2 is fixedly assembled on the outer side of the main support frame 16, the rotary jet drilling machine 3 comprises a fixed rail 31, the fixed rail 31 is slidably assembled on the inner wall of the frame 2, a telescopic rod 32 perpendicular to the displacement direction of the fixed rail 31 is assembled on the inner side of the fixed rail 31, a second guide rail 33 is assembled on the inner side of the telescopic rod 32, and a drilling machine 34 capable of lifting is assembled on the outer side of the second guide rail 33.
The rotary spraying grouting machine has the advantages that the rotary spraying grouting machine capable of realizing staggered operation of the double drilling machines is arranged, when the rotary spraying grouting machine is used, at least two drilling machines are mutually staggered for drilling and rotary spraying grouting, soft soil is reinforced, in the operation process, the two drilling machines are mutually staggered for operation, the vehicle body is matched with the allowance of the staggered operation of the drilling machines for operation towards the next reinforcing point, further long-distance continuous drilling operation can be realized, better continuity is realized, the efficiency of rotary spraying grouting is high, the use of a plurality of large-scale construction operations is facilitated, the problems that only one point position can be constructed by single grouting operation caused by the conventional rotary grouting operation of the egg drilling machine, deviation or steering is easy to occur when the point position is moved to the next point position, and the adjustment is troublesome are effectively solved.
Specifically, the side wall of the hopper 12 is hinged with a bracket 13, the outer side of the bracket 13 is provided with a telescopic support 14, the telescopic support 14 and the bracket 13 mainly serve as supports for the hopper, when the rotary spraying drilling machine is used, the stability of the hopper 12 is improved, the top of the hopper 12 can be used for carrying the rotary spraying drilling machine 3, and the hopper can be extended in the opposite direction of the frame 2, and a connecting pipe for loading and drilling holes by expanding the hopper is arranged and can be used as a counterweight;
the hydraulic cylinder driving front-back telescopic structure can be adopted between the hopper 12 and the travelling mechanism 11, the front-back displacement function of the first guide rail 22 can be omitted during use, or the front-back displacement driving mode of the rotary jet drilling machine 3 is combined with the first guide rail 22 to improve the front-back movement efficiency;
the walking mechanism 11 preferably adopts a crawler walking mechanism, has strong passing capability and sedimentation prevention, has the effect of stable walking, can be provided with a bucket in front of the walking mechanism 11, can push the front road flat during operation, and is beneficial to subsequent advancing.
Specifically, the frame 2 includes the fixed beam 21, and the both sides of fixed beam 21 are equipped with first guide rail 22, and the inside slip of first guide rail 22 is equipped with first slider 23 and is assembled in the outside of fixed track 31, and first guide rail 22 preferably adopts slide rail slider complex structure to use the pneumatic cylinder structure to drive, can realize along orbital motion's purpose, realize steady driving effect.
Specifically, the telescopic rod 32 is symmetrically assembled on the outer side of the fixed track 31, the pipeline 35 is assembled on the top of the drilling machine 34, the drill pipe 36 is assembled on the bottom of the drilling machine 34, the tail end of the drill pipe 36 is assembled on the top end of the drill bit 4, the telescopic rod 32 is also of a hydraulic cylinder structure, the second guide rail 33 can be driven to run in parallel relative to the fixed track 31 through the telescopic action of the hydraulic cylinder during use, the telescopic rod 32 can span another set of drilling machine during operation, and the vertical position of the drill bit 44 can be enabled to be in the middle position of the fixed beam 21 due to the maximum extending position of the telescopic rod 32 during use.
In the outside of second guide rail 33 or rig 34, be provided with travel switch, when the use, when telescopic link 32 inefficacy, and under the state that first guide rail 22 inner structure continued to move, travel switch can collide another rig, will start the scram effect, prevents that two drills from bumping into and taking place the accident.
The connection position of the first guide rail 22 and the first sliding block 23, the connection position of the second guide rail 33 and the drilling machine 34, and the connection position of the telescopic rod 32 and the second guide rail 33 are provided with buffer structures, the buffer structures are made of multi-point bolts and rubber materials and have small-amplitude relative displacement yield, so that vibration generated in the displacement and drilling processes can be reduced, and the drilling direction of the drilling machine 34 is not excessively influenced when the displacement is suitable for deflection.
Specifically, the drill 4 includes a connection pipe 41, a connection head 42 is welded to the bottom end of the connection pipe 41, a cutting blade 43 is welded to the outer side of the connection head 42, and a crushing head 44 is welded to the tip of the cutting blade 43.
Specifically, the cutting blades 43 are of a high-low bevel ring structure, and the number of preferable openings of the cutting blades 43 is 5.
The cutting blades 43 are annularly distributed, the top and the bottom of the connector 42 are welded with annularly distributed cutting blades 43, and the cutting directions of the upper layer and the lower layer are opposite.
The whole structure that has adopted top and bottom bilayer drill bit working face of drill bit 4 is provided with the orifice that is used for spouting the slip casting in middle part and bottom, and when drilling downwards, outside high-pressure equipment keeps certain pressure, slowly exports pressure, keeps the inside slow of keeping certain pressure of liquid of orifice 45 to leave, can effectually avoid orifice 45 to be stopped up when drilling, guarantees the unobstructed of orifice 45.
When the drilling is moved upwards in place, the drilling working surface at the top can outwards poke the collapsed soil at the hole site at the top again, so that the upward smoothness is improved when the rotary grouting is lifted, the constant-speed upward operation can be kept, and the uniform grouting effect is realized by matching with the stable rotation speed;
in addition to the operation mode of drilling and then spraying, the invention can use the operation of bidirectional grouting under the condition that the soil is too soft, namely, when drilling downwards, spraying is started, when recovering upwards, spraying can be continued to expand the mixing surface, or spraying is closed to keep the center spraying.
The side walls, top and bottom of the connector 42 are provided with spray holes.
A method of reinforcing a reinforcing apparatus for rotary jetting slurry, comprising the steps of:
step one: earlier stage preparation, namely exploring soil texture of a soil layer according to earlier stage drilling, setting a rotary spraying starting point and a same-direction end point according to the trend of the soil texture of the soil layer or the requirement of a drawing, opening a vehicle body 1 to a straight line of a starting position according to the directions of the starting point and the end point, and positioning a rotary spraying drilling machine 3 at one side;
step two: starting the drilling machine, namely starting the rotary jet drilling machine 3 on one side firstly, after starting, driving the drill pipe 36 by the drilling machine 34 to drill downwards, gradually increasing the drill pipe 36 along with the increase of the depth until the drill bit 4 reaches the required drilling depth, then starting a high-pressure injection system, rotating and recovering the drill bit 4 upwards, and stirring and mixing high-pressure mortar or soil around the drill hole in the process, so as to finally form a fixed mortar cylinder;
step three: switching and starting, when the first drilling machine drills down to the right, starting the second drilling machine to drill down, in the process of drilling down by the second drilling machine, the left drilling machine is in a state of upwards recovering and rotating spraying slurry, after the first drilling machine finishes spraying slurry, starting the telescopic rod 32 to recover the second guide rail 33 outwards after the drill bit is completely pulled out upwards, then starting the first guide rail 22 to drive the first drilling machine to move to the next point of the second drilling machine, and starting drilling again after the movement is finished, and performing cyclic reciprocating operation;
step four: when the vehicle is moved and the double drilling machine is drilled simultaneously after the switching operation is finished once, according to the maximum moving speed of the first guide rail 22, the running speed of the running mechanism 11 of the vehicle body 1 is adjusted to be synchronous, the running mechanism 11 is started to drive the frame 2 to move along the line direction of the next point position, in the process of displacement, the first guide rail 22 drives the first sliding block 23 to synchronously move at the same speed and reversely, and further, the vehicle body 1 and the frame 2 move forwards for a certain distance in a static state of the rotary drilling machine 3 relative to the ground, and an operation allowance is provided for the next switching starting until the final drilling fixed point position is reached.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a reinforcing apparatus of jet grouting, includes automobile body (1), its characterized in that: the outer side of the vehicle body (1) is provided with a turnover frame (2), the inside of the frame (2) is provided with a rotary jet drilling machine (3) capable of horizontally displacing, and a working part of the rotary jet drilling machine (3) is provided with a drill bit (4) capable of lifting;
the vehicle body (1) comprises a travelling mechanism (11), a hopper (12) is assembled at the top of the travelling mechanism (11), a turnover mechanism (15) is assembled at the outer side of the hopper (12), and a main support frame (16) is hinged at the outer side of the turnover mechanism (15);
the frame (2) fixed mounting is in the outside of main support (16), rotary jetting machine (3) are including fixed track (31), fixed track (31) sliding mounting is at the inner wall of frame (2), the inboard of fixed track (31) is equipped with telescopic link (32) that are perpendicular with fixed track (31) displacement direction, the inboard of telescopic link (32) is equipped with second guide rail (33), second guide rail (33) outside is equipped with rig (34) that can go up and down.
2. The device for reinforcing jet grouting according to claim 1, wherein: the side wall of the car hopper (12) is hinged with a bracket (13), and the outer side of the bracket (13) is provided with a telescopic support (14).
3. The device for reinforcing jet grouting according to claim 1, wherein: the frame (2) comprises a fixed beam (21), first guide rails (22) are assembled on two sides of the fixed beam (21), first sliding blocks (23) are assembled inside the first guide rails (22) in a sliding mode, and the first sliding blocks (23) are assembled on the outer sides of the fixed rails (31).
4. The device for reinforcing jet grouting according to claim 1, wherein: the telescopic rod (32) is symmetrically assembled on the outer side of the fixed track (31), a pipeline (35) is assembled on the top of the drilling machine (34), a drill pipe (36) is assembled on the bottom of the drilling machine (34), and the tail end of the drill pipe (36) is assembled on the top end of the drill bit (4).
5. The device for reinforcing jet grouting according to claim 1, wherein: the drill bit (4) comprises a connecting pipe (41), a connecting head (42) is welded at the bottom end of the connecting pipe (41), a cutting blade (43) is welded at the outer side of the connecting head (42), and a crushing head (44) is welded at the tip part of the cutting blade (43).
6. The device for reinforcing jet grouting according to claim 5, wherein: the cutting blades (43) are of high-low oblique angle annular structures, and the number of the cutting blades (43) is preferably 5.
7. The device for reinforcing jet grouting according to claim 6, wherein: the cutting blades (43) are annularly distributed, the cutting blades (43) annularly distributed are welded at the top and the bottom of the connector (42), and the cutting directions of the upper layer and the lower layer are opposite.
8. The device for reinforcing jet grouting according to claim 5, wherein: the side wall, the top and the bottom of the connector (42) are provided with spray holes.
9. A method of reinforcing a rotary jetting tool, according to claim 1, comprising the steps of:
step one: earlier stage preparation, namely exploring soil texture of a soil layer according to earlier stage drilling, setting a rotary spraying starting point and a same-direction end point according to the trend of the soil texture of the soil layer or the requirement of a drawing, opening a vehicle body (1) to a straight line of a starting position according to the directions of the starting point and the end point, and positioning a rotary spraying drilling machine (3) at one side;
step two: starting a drilling machine, namely starting the rotary jet drilling machine (3) on one side in advance, after starting, driving a drilling pipe (36) to drill downwards by the drilling machine (34), gradually increasing the drilling pipe (36) along with the increase of depth until the drill bit (4) reaches the required drilling depth, then starting a high-pressure injection system, and rotating and recovering the drill bit (4) upwards, wherein in the process, high-pressure mortar or soil around the drill hole is stirred and mixed, and finally forming into a fixed mortar cylinder;
step three: switching and starting, when the first drilling machine drills down to the right, starting the second drilling machine to drill down, in the process of drilling down by the second drilling machine, the left drilling machine is in a state of upwards recovering and rotating spraying slurry, after the first drilling machine finishes spraying slurry, starting a telescopic rod (32) to recover the second guide rail (33) outwards after the drill bit is completely pulled out upwards, then starting the first guide rail (22) to drive the first drilling machine to move to the next point of the second drilling machine, and starting drilling again after the movement is completed, and performing cyclic reciprocating operation;
step four: when the vehicle is moved and the double drilling machines drill holes simultaneously after the switching operation is finished once, according to the maximum moving speed of the first guide rail (22), the running speed of the running mechanism (11) of the vehicle body (1) is adjusted to be synchronous, the running mechanism (11) is started to drive the frame (2) to move towards the next point along the line direction, in the process of the displacement, the first guide rail (22) drives the first sliding block (23) to synchronously move reversely at the same speed, and then the operation that the vehicle body (1) and the frame (2) move forwards for a certain distance is achieved under the condition that the rotary drilling machine (3) is stationary relative to the ground, and an operation allowance is provided for the next switching start until the final drilling fixed point is brought.
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| CN202311704098.4A CN117514197B (en) | 2023-12-11 | 2023-12-11 | Reinforcement device for jet grouting and reinforcement method thereof |
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| CN202311704098.4A CN117514197B (en) | 2023-12-11 | 2023-12-11 | Reinforcement device for jet grouting and reinforcement method thereof |
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| CN111962516A (en) * | 2020-08-12 | 2020-11-20 | 北京市政建设集团有限责任公司 | Grouting construction process for jet grouting pile for reinforcing underground excavation shaft |
| CN114164834A (en) * | 2021-12-10 | 2022-03-11 | 山东省路桥集团有限公司 | Ultrahigh-pressure jet grouting pile machine and jet grouting pile construction method |
| CN217438908U (en) * | 2022-03-01 | 2022-09-16 | 青岛俊泰水利岩土有限公司 | A high-efficient high pressure spouts stake machine soon for handling weak soil |
| CN114960632A (en) * | 2022-06-15 | 2022-08-30 | 陈白全 | Horizontal drilling rotary jet grouting pile forming device and construction method thereof |
| CN115772887A (en) * | 2022-11-22 | 2023-03-10 | 武汉武建机械施工有限公司 | Composite soft soil foundation treatment equipment and construction method thereof |
| CN116517465A (en) * | 2023-04-17 | 2023-08-01 | 中铁十六局集团北京轨道交通工程建设有限公司 | Walking type horizontal high-pressure rotary jet drilling machine |
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