CN107476814B - Integrated construction equipment and method for self-vibration jet grouting anchor rod - Google Patents
Integrated construction equipment and method for self-vibration jet grouting anchor rod Download PDFInfo
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- CN107476814B CN107476814B CN201710896264.3A CN201710896264A CN107476814B CN 107476814 B CN107476814 B CN 107476814B CN 201710896264 A CN201710896264 A CN 201710896264A CN 107476814 B CN107476814 B CN 107476814B
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000002002 slurry Substances 0.000 claims abstract description 69
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 63
- 238000005553 drilling Methods 0.000 claims description 47
- 230000000694 effects Effects 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 4
- 240000007643 Phytolacca americana Species 0.000 description 3
- 238000005422 blasting Methods 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a self-vibration jet grouting anchor rod integrated construction device and a method, which are composed of a self-vibration jet grouting anchor rod, a high-pressure rotary slurry mixer, a grouting device and a hydraulic driving device. The self-vibration jet grouting anchor rod is a hollow rod body with screw edge stirring sheets, and the front end head of the anchor rod is provided with a self-vibration generator which is connected with a drill bit. The high-pressure rotary slurry mixer is characterized in that a feeding hole is formed in the upper portion of the high-pressure rotary slurry mixer, a rotary supporting leg capable of freely lifting and rotating is arranged at the bottom of the high-pressure rotary slurry mixer, a jet flow spray pipe is arranged at the front portion of the high-pressure rotary slurry mixer, a rotary shaft is arranged in an inner cavity of the high-pressure rotary slurry mixer, a connecting plug is arranged at the front end of the rotary shaft and is connected with a self-vibration jet flow grouting anchor rod connecting slot in a matched mode, a bearing is arranged at the rear end of the high-pressure rotary slurry mixer, and high-pressure sealing boxes are arranged at the two ends of the high-pressure rotary slurry mixer. The grouting device adjusts grouting amount and grouting pressure at any time, and the hydraulic driving device provides rotary power. The utility model can be widely applied to supporting and reinforcing engineering in the engineering fields of mines, traffic, water conservancy and the like, and has wide application prospect and remarkable economic benefit.
Description
Technical Field
The utility model relates to an anchor rod used in the fields of mines, traffic, water conservancy and engineering.
Background
In the fields of mine engineering, geotechnical engineering, tunnel engineering and the like, in order to prevent deformation or instability of strata and surrounding rocks and endanger engineering safety, supporting and reinforcing of the stratum and the surrounding rocks are required, and an anchor bolt supporting and reinforcing technology is the most widely applied supporting technology. The anchor bolt support can fully exert the self stability of the rock and soil body, has small disturbance to the original rock, high construction speed, safety, reliability, economy and effectiveness, and can be widely applied to mine support, tunnel support, slope support, large-scale underground chamber support and anti-floating and anti-capsizing engineering of various buildings. Wherein, the support reinforcement effect of slip casting stock is more effective in ordinary stock. The grouting anchor rod can realize the full-length bonding of the existing pressure, so that the anchoring strength is improved, the slurry can effectively penetrate into surrounding rock cracks, the overall strength of broken surrounding rock is improved, the deformation of the surrounding rock is effectively controlled, the wrapping property of the anchor rod is good, and the anchor rod is not easy to be corroded by stratum fluid.
At present, most grouting anchor rods applied to mines and geotechnical engineering use a hydraulic or pneumatic drilling machine as a power source, and are installed after rotary drilling to the depth of stratum positions, and finally grouting construction operation is carried out. Although the grouting anchor rod has obvious effects on improving the stress environment of surrounding rock and improving the bearing capacity of the surrounding rock, the grouting anchor rod has the following defects in the projects such as high breaking degree of surrounding rock, crack development, short self-stabilization time of the surrounding rock, hard rock at the bottom of a drilled hole and the like or other special cases: (1) The grouting pressure is low, cracks cannot be effectively penetrated, and the integral reinforcing effect of loose broken surrounding rock is poor; (2) The anchor rod drilling and grouting cannot be integrally and synchronously carried out, and the grouting operation is generally carried out after drilling, extracting a drill rod and installing an anchor rod, so that the construction period is long, and for extremely unstable surrounding rock, the optimal anchoring and supporting time is easily missed, so that the surrounding rock is deformed and unstable and even damaged; (3) In the drilling process, only rotary drilling by a power source is needed, the impact force of the drill bit on the hard rock at the bottom of the hole is small, the rock drilling and breaking efficiency is low, the drilling speed is low, and the drilling construction period is long. Therefore, the practical application and popularization effects of the grouting anchor rod are not ideal, and the grouting anchor rod is low in full-length grouting compactness, insufficient in bearing capacity, complex in construction process, low in drilling speed, long in period and the like. In order to overcome the problems, researchers have proposed a variety of novel grouting anchors.
For example: the Chinese patent utility model ZL201310096450.0 discloses a perforating large-head grouting constant-resistance anchor rod, develops an anchor rod suitable for special mine environments, forms blasting perforation cracks or holes in the end of the anchor rod (in a broken coal rock body) through a blasting perforation device, forms a large-head anchoring anchor rod in the broken coal rock body (soft rock) at the end by utilizing a high-pressure grouting device, can improve the rock breaking efficiency of the hole bottom to a certain extent, realizes high-pressure grouting and the like, and solves the problem of low supporting strength of the conventional common anchor rod under the complex geological conditions of high-stress surrounding rock, soft rock and broken rock body. However, the anchor rod adopts a blasting means, the construction conditions and the working procedures are complex, the synchronous integrated construction of drilling and grouting cannot be realized, equipment needs to be replaced in the middle, and the optimal supporting time can be delayed.
The Chinese patent ZL201420048521.X discloses a self-advancing grouting anchor rod which is used for tunnel weak surrounding rock construction and tunnel collapse treatment and can also be used for slope protection. The grouting anchor rod main body comprises an anchor rod body with a hollow central grouting channel, the front end of the anchor rod body is provided with a cross drill bit with a drill bit blade '8', complex construction procedures of punching, anchoring agent plugging and anchor rod placing of the traditional anchor rod are solved, the full-length close contact between the anchor rod and the rock body can be realized through grouting of the hollow anchor rod body, and the problems that the anchor rod is difficult to plug in, the anchoring agent is not compact and the like when the hole is collapsed are avoided. But the rock breaking efficiency of the cross drill bit with the cutting edge of 8 is still to be improved because the rock drilling and grouting synchronous integrated construction cannot be realized by the anchor rod.
The utility model patent ZL201220074667.2 discloses a mining high-pressure water self-drilling grouting anchor rod, which consists of an anchor head, a rod body and a support, wherein the anchor head consists of a high-pressure water outlet, a high-pressure water delivery pipe and a drill bit, the high-pressure water delivery pipe is arranged in the anchor rod body and the drill bit, the high-pressure water outlet is arranged at the front end of the drill bit, and rock is broken through by the aid of the high-pressure water, so that the drilling speed is improved, the supporting operation efficiency is improved, and the primary anchoring force and the anchoring force after supporting are effectively improved. However, the rock penetrating process and the grouting process of the anchor rod are operated separately, namely, the drill bit is firstly used for drilling, the rock is penetrated by the high-pressure water, the grouting construction operation is carried out, the anchor rod drilling and grouting are not synchronous integrated construction, the problems of long construction period and complex working procedures exist, and the technical process of high-pressure water rock breaking is added in the drilling process, so that the construction working procedure is possibly complicated. If cement slurry can directly replace high-pressure water and realize synchronous drilling and grouting operation, the construction process can be greatly simplified, the time can be shortened, and the drilling speed can be improved.
In summary, the existing grouting anchor rod generally has the problems that the anchor rod drilling and grouting cannot be synchronously and integrally constructed, the construction period is long, the working procedure is complex, the support effect on rock breaking degree is high, crack development, surrounding rock self-stabilization time is short, drilling hole bottom rock is hard and the like is not ideal, and the self-vibration jet grouting anchor rod integrated construction equipment and method can better solve the support problem.
Disclosure of Invention
The utility model aims to overcome the defects of the existing grouting anchor rod, provides self-vibration jet grouting anchor rod integrated construction equipment, solves the problems of high rock breaking degree, crack development and short surrounding rock self-stabilization time in underground engineering, and solves the problems of low drilling efficiency, long construction period and complex working procedures caused by the hardness of hole bottom rock, and can be used as permanent support and temporary support. A method of using the device is also provided.
The utility model relates to a construction device for integrating a self-vibration jet grouting anchor rod, which comprises the following components: consists of a self-vibration jet grouting anchor rod, a high-pressure rotary grouting device, a grouting device and a hydraulic driving device.
The self-vibration jet grouting anchor rod is characterized in that the self-vibration generator is arranged at the front end of the anchor rod, the drill bit is connected with the self-vibration generator, axial vibration impact can be formed to drill holes and rock bits efficiently, the grouting plug, the tray, the grouting interface, the nut and the connecting slot are arranged at the rear end of the anchor rod body, the anchor rod body is a hollow rod body with screw-edge stirring sheets, the slurry can be fully stirred after grouting, uniform and full-length bonding is realized, and a bonding layer formed by grouting is arranged between the anchor rod body and the wall of the drill hole.
The self-vibration generator is composed of front and rear rotary poking teeth with special-shaped sections, the anchor rod body drives the front poking teeth to rotate during rotary drilling, the front poking teeth poke the rear poking teeth to rotate during rotation, axial impact is generated by staggered movement of the front and rear rotary poking teeth, the rear poking teeth are connected with a drill bit, and the drill bit rotates for one circle to impact one cycle, so that high-frequency impact on hard rock at the bottom of a drilling hole can be realized, the rock breaking efficiency is higher than that of single grinding rock breaking, and efficient drilling rock breaking is realized.
The drill bit is composed of blades, jet grouting nozzles, inserts and sealing check rings, the number of the blades can be set to 3-6 blades according to the hardness degree of rock, the jet grouting nozzles are conical straight nozzles, the number of the nozzles can be set to 3-6 according to grouting requirements, the inserts are impact-resistant polycrystalline diamond composite sheets, and the rock can be broken efficiently under the action of rotary impact.
The high-pressure rotary slurry mixer is characterized in that a feed inlet is formed in the upper portion of the high-pressure rotary slurry mixer, rotary supporting legs capable of freely lifting and rotating are arranged at the bottom of the high-pressure rotary slurry mixer, integrated synchronous drilling and grouting can be carried out on positions with different angles and heights, 3-6 jet nozzles are arranged at the front of the high-pressure rotary slurry mixer, high-speed jet is formed by slurry inside the high-pressure rotary slurry mixer, a rotating shaft is arranged in an inner cavity of the high-pressure rotary slurry mixer, a connecting plug is arranged at the front end of the rotating shaft and is matched and connected with a connecting slot of a self-vibration jet grouting anchor rod, a bearing is arranged at the rear end of the high-pressure rotary slurry mixer, high-pressure sealing boxes are arranged at two ends of the high-pressure rotary slurry mixer, and high pressure resistance can reach more than 30 MPa.
The grouting device consists of a grouting pump, a high-pressure grouting manifold and a high-pressure control valve, and has the functions of adjusting the needed slurry amount and grouting pressure at any time, and ensuring sufficient pressure or flow of slurry supply and good uniformity during construction.
The hydraulic driving device consists of a hydraulic motor, a hydraulic manifold and a hydraulic workstation, and is used for better providing rotary power for self-vibration jet grouting anchor rod integrated construction equipment and driving a rotary shaft of a high-pressure rotary slurry mixer and a self-vibration jet grouting anchor rod body to rotate.
The utility model relates to a construction method of self-vibration jet grouting anchor rod integrated construction equipment, which comprises the following steps: firstly, adjusting a rotary supporting leg to be in position, connecting a high-pressure rotary grouting device to a hydraulic motor and a hydraulic workstation, connecting the high-pressure rotary grouting device with a high-pressure grouting manifold and a control valve for a grouting pump, after a self-vibration jet grouting anchor rod is in position, arranging a nut, a tray and a grouting stop plug in advance, connecting the self-vibration jet grouting anchor rod with the high-pressure rotary grouting device through a connecting plug at the front end of the high-pressure rotary grouting device and a connecting slot at the rear end of an anchor rod body, and simultaneously, just butting a jet nozzle outlet of the high-pressure rotary grouting device with a grouting interface of the self-vibration jet grouting anchor rod to form a grouting flow channel; during construction, a hydraulic work station and a hydraulic motor are started firstly, a rotary shaft of a high-pressure rotary slurry mixer is driven to rotate, a self-vibration jet grouting anchor rod is driven to rotate, in the process of rod rotation, a front poking tooth of a self-vibration generator is triggered to rotate, a front poking tooth of the self-vibration generator is poked to rotate, a back poking tooth of the self-vibration generator is staggered to rotate, one-time impact is completed, and continuous cyclic impact is continuously carried out, the impact effect is conducted to a drill bit, impact crushing of rock at the bottom of a drilling hole is completed, finally, a grouting pump is started at proper time, slurry flows into a feed port of the high-pressure rotary slurry mixer and is conveyed to a front-end jet nozzle, a first-stage high-speed jet is generated, the slurry enters the anchor rod body through a self-vibration jet grouting interface, is conveyed to a jet grouting nozzle of the drill bit, and is sprayed out to form a second-stage high-speed and high-pressure cement slurry jet, the effect of assisting in crushing the bottom of the hole can be achieved in the drilling process, the high-speed and high-pressure slurry can flow through the whole drilling hole under stirring of a spiral stirring piece, the whole hole wall is bonded with the whole wall, the deep part is crushed or the rock body is invaded, the grouting process is synchronized, the grouting process is completed, and the slurry is constructed, and the construction is synchronized, and the integral construction is achieved.
The self-vibration jet grouting anchor rod integrated construction equipment has the advantages that:
1. the self-vibration jet grouting anchor rod is adopted, the vibration impact effect is generated in the process of rotary drilling, the rock drilling or breaking efficiency of the drill bit can be improved, the drilling speed is improved, the construction time is saved, the high-pressure and high-speed jet grouting body can further deeply crush or crack the deep part of surrounding rock, compared with the prior art, the grouting reinforcement range is wide, the depth is large, the effect is good, the anchor rod drilling and grouting synchronous integrated construction can be realized, the process flow is simple, and the construction period is greatly shortened.
2. The high-pressure rotary slurry mixer is adopted, so that the high-pressure sealing performance of the multiphase mixed fluid medium such as cement slurry is good, the grouting pressure can be improved to more than 30MPa, and the grouting reinforcement effect of surrounding rock is good; the rotary supporting leg can freely lift and rotate, can realize the integrated synchronous drilling and grouting construction of the parts with different angles and heights, is convenient to disassemble and reliable in structure, and is suitable for complex working conditions of a construction site.
3. The equipment has systematic construction procedures, high drilling efficiency, good grouting quality and effect, simple and convenient construction process, short construction period, excellent cost performance and stable physical and mechanical properties.
Drawings
Fig. 1 is a schematic diagram of the overall structural connection of the present utility model.
Fig. 2 is a schematic structural view of the self-vibrating jet grouting anchor body in fig. 1.
Fig. 3 is a schematic view of the high-pressure rotary mixer of fig. 1.
Fig. 4 is a schematic view of the construction of the bit of fig. 2.
Fig. 5 is a section A-A of the bit of fig. 2.
Fig. 6 is a schematic diagram of the use state of the self-vibrating jet grouting anchor rod in the utility model.
In the figure: 1-self-vibration jet grouting anchor rod; 2-high pressure rotary slurry mixer; 3-grouting pump; 4-high-pressure grouting manifold; 5-a high pressure control valve; 6-a hydraulic motor; 7-hydraulic manifold; 8-a hydraulic workstation; 9-a bonding layer; 10-drilling; 101, a drill bit; 102-a self-vibration generator; 103-an anchor rod body; 104-spiral stirring sheets; 105-a grout stop; 106-a tray; 107-a nut; 108-grouting interface; 109-a connection slot; 201-a rotation axis; 202-jet nozzle; 203-a connection plug; 204-a bearing; 205-a flat key; 206-high pressure seal box; 207—a feed inlet; 208-rotating the leg; 1011—blade; 1012-jet grouting nozzle; 1013-insert; 1014-sealing collar.
Detailed Description
The utility model provides self-vibration jet grouting anchor rod integrated construction equipment, which is used for making the purposes, the technical scheme and the effects of the utility model clearer and more definite, and the detailed description of the specific embodiments of the utility model is given below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the self-vibration jet grouting anchor rod integrated construction equipment comprises a self-vibration jet grouting anchor rod 1, a high-pressure rotary grouting device 2, a grouting device and a hydraulic driving device.
The self-vibration jet grouting anchor rod 1 is characterized in that a self-vibration generator 102 is arranged at the front end of the anchor rod, a drill bit 101 is connected with the self-vibration generator 102, axial vibration impact is formed to drill holes and rock holes efficiently, a grouting plug 105, a tray 106, a grouting interface 108, a nut 107 and a connecting slot 109 are arranged at the rear end of the anchor rod body 103, the anchor rod body 103 is a hollow rod body with a spiral stirring piece 104, the slurry body can be fully stirred after grouting, uniform and full-length bonding is realized, and a bonding layer 9 formed by grouting is arranged between the anchor rod body 103 and the wall of the hole 10.
The self-vibration generator 102 is composed of front and rear rotary poking teeth with special-shaped cross sections, the anchor rod body 103 drives the front poking teeth to rotate during rotary drilling, the front poking teeth poke the rear poking teeth to rotate during rotation, axial impact is generated by staggered movement of the front and rear rotary poking teeth, the rear poking teeth are connected with the drill bit 101, and the drill bit rotates for one circle to impact one cycle, so that high-frequency impact on hard rock at the bottom of a 10-hole drill hole can be realized, and the rock breaking efficiency is higher than that of single grinding rock breaking, and efficient drilling and rock breaking can be realized.
The drill bit 101 comprises blades 1011, jet grouting nozzles 1012, inserts 1013 and sealing check rings 1014, the number of the blades 1011 can be set to 3-6 blades according to the hardness degree of the rock, the jet grouting nozzles 1012 are conical straight nozzles, the number of the nozzles can be set to 3-6 according to grouting requirements, and the inserts 1013 are impact-resistant polycrystalline diamond composite sheets, so that the rock can be efficiently crushed under the action of rotary impact.
The high-pressure rotary slurry mixer 2 is characterized in that a feed inlet 207 is formed in the upper portion of the high-pressure rotary slurry mixer 2, rotary supporting legs 208 capable of freely lifting and rotating are arranged at the bottom of the high-pressure rotary slurry mixer, integrated synchronous drilling and grouting can be carried out on positions with different angles and heights, 3-6 jet nozzles 202 are arranged at the front of the high-pressure rotary slurry mixer, slurry inside the high-pressure rotary slurry mixer 2 is formed into high-speed jet flow, a rotating shaft 201 is arranged in an inner cavity of the high-pressure rotary slurry mixer, a connecting plug 203 is arranged at the front end of the rotating shaft 201 and is connected with a connecting slot 109 of a self-vibration jet grouting anchor rod 1 in a matched mode, a bearing 204 is arranged at the rear end of the high-pressure rotary slurry mixer, high-pressure rotary vehicle type sealing is adopted at two ends of the high-pressure rotary vehicle type grouting, and pressure resistance can reach more than 30 MPa.
The grouting device consists of a grouting pump 3, a high-pressure grouting manifold 4 and a high-pressure control valve 5, and has the functions of adjusting the needed slurry amount and grouting pressure at any time and ensuring sufficient pressure or flow and good uniformity of slurry supply during construction.
The hydraulic driving device is composed of a hydraulic motor 6, a hydraulic manifold 7 and a hydraulic working station 8, and is used for better providing rotary power for the high-pressure rotary slurry mixer 2 and driving the rotary shaft 201 and the self-vibration jet grouting anchor rod body 103 to rotate.
The utility model relates to self-vibration jet grouting anchor rod integrated construction equipment, which specifically comprises the following working processes:
1. firstly, adjusting a rotary supporting leg 208 to be in position, connecting a high-pressure rotary slurry mixer 2 to a hydraulic motor 6 and a hydraulic workstation 8, connecting the high-pressure rotary slurry mixer 2 with a grouting pump 3 by using a high-pressure grouting manifold 4 and a control valve 5, after a self-vibration jet grouting anchor rod 1 is in position, arranging a nut 107, a tray 106 and a grouting stop 105 in advance, connecting the self-vibration jet grouting anchor rod 1 with the high-pressure rotary slurry mixer 2 through a connecting plug 203 at the front end of the high-pressure rotary slurry mixer 2 and a connecting slot 109 at the rear end of an anchor rod body 103, and simultaneously, just butting a jet nozzle 202 outlet of the high-pressure rotary slurry mixer 2 with a grouting interface 108 of the self-vibration jet grouting anchor rod 1 to form a grouting flow channel;
2. during construction, the hydraulic working station 8 and the hydraulic motor 6 are started firstly, the rotating shaft 201 of the high-pressure rotary grouting device 2 is driven to rotate, the anchor rod body 103 of the self-vibration jet grouting anchor rod 1 is driven to rotate, in the rotating process of the anchor rod body 103, the front poking teeth of the self-vibration generator 102 are triggered to rotate, the front poking teeth poke the rear poking teeth to rotate, the impact is completed once in one circle, the cycle impact is continued, the impact effect is conducted to the drill bit 101, and the impact crushing of the rock at the bottom of a hole of the drill hole 10 is completed;
3. the grouting pump 3 is started at proper time, slurry flows into the feed inlet 207 of the high-pressure rotary slurry mixer 2 and is conveyed to the front-end jet spray pipe 202, a first-stage high-speed jet flow is generated, the slurry enters the anchor rod body 103 through the grouting interface 108 of the self-vibration jet grouting anchor rod 1 and is conveyed to the jet grouting nozzle 1012 of the drill bit 101, and a second-stage high-speed high-pressure cement slurry jet flow is sprayed out, so that the effect of assisting in crushing rock at the bottom of the hole 10 in the drilling process can be achieved, the high-speed high-pressure slurry can flow through the whole drilling 10 under the stirring of the spiral stirring sheet 104, is bonded with the whole length of the hole wall and invades deep broken or fractured rock mass, and the grouting reinforcement process is synchronously completed, so that the aim of synchronous integrated construction of efficient drilling and grouting is achieved.
Claims (2)
1. The utility model provides a self-vibration jet grouting stock integration construction equipment which characterized in that: the grouting device consists of a self-vibration jet grouting anchor rod, a high-pressure rotary grouting device, a grouting device and a hydraulic driving device; the self-vibration jet grouting anchor rod is a hollow rod body with a screw edge stirring piece, the front end head of the self-vibration grouting anchor rod is provided with a self-vibration generator consisting of a front rotary poking tooth and a rear rotary poking tooth and is connected with a drill bit, and the rear end head of the self-vibration jet grouting anchor rod is provided with a grouting stop plug, a tray, a grouting interface, a nut and a connecting slot; the high-pressure rotary slurry mixer is characterized in that a feed inlet is formed in the upper part of the high-pressure rotary slurry mixer, a rotary supporting leg capable of freely lifting and rotating is arranged at the bottom of the high-pressure rotary slurry mixer, a jet spray pipe is arranged at the front part of the high-pressure rotary slurry mixer, a rotary shaft is arranged in an inner cavity of the high-pressure rotary slurry mixer, a connecting plug is arranged at the front end of the rotary shaft and is matched and connected with a connecting slot of a self-vibration jet grouting anchor rod, a bearing is arranged at the rear end of the high-pressure rotary slurry mixer, high-pressure sealing boxes are arranged at the two ends of the high-pressure rotary slurry mixer, and a self-vibration generator consists of front rotary stirring teeth and rear rotary stirring teeth with special-shaped sections; the construction method of the self-vibration jet grouting anchor rod integrated construction equipment comprises the following steps: firstly, adjusting a rotary supporting leg to be in position, connecting a high-pressure rotary grouting device to a hydraulic motor and a hydraulic workstation, connecting the high-pressure rotary grouting device with a high-pressure grouting manifold and a control valve for a grouting pump, after a self-vibration jet grouting anchor rod is in position, arranging a nut, a tray and a grouting stop in advance, connecting the self-vibration jet grouting anchor rod with the high-pressure rotary grouting device through a connecting plug at the front end of the high-pressure rotary grouting device and a connecting slot at the rear end of an anchor rod body, and simultaneously, just butting a jet nozzle outlet of the high-pressure rotary grouting device with a grouting interface of the self-vibration jet grouting anchor rod to form a grouting flow channel; during construction, a hydraulic working station and a hydraulic motor are started firstly, a rotating shaft of a high-pressure rotary slurry mixer is driven to rotate, a self-vibration jet grouting anchor rod body is driven to rotate, in the process of rotating the anchor rod body, a front poking tooth of a self-vibration generator is triggered to rotate, a front poking tooth is poked to rotate, a back poking tooth is rotated, the staggered movement is completed for one circle to complete one impact, and continuous circular impact is conducted to a drill bit, impact crushing of rock at the bottom of a drilling hole is completed, finally, a grouting pump is started timely, slurry flows into a feeding port of the high-pressure rotary slurry mixer and is conveyed to a front jet nozzle, a first-stage high-speed jet is generated, the slurry flows into the anchor rod body through a grouting interface of the self-vibration jet grouting anchor rod and is conveyed to a jet grouting nozzle of the drill bit, and is sprayed out to form a second-stage high-speed high-pressure cement slurry jet, the effect of auxiliary crushing of rock at the bottom of the drilling hole can be achieved in the drilling process, the high-speed high-pressure slurry can flow through the whole drilling hole under stirring of a spiral edge stirring piece, the whole drilling hole wall is bonded with the whole wall, a deep-section broken or a full-length rock bonding layer is formed, grouting is completed, and grouting is completed synchronously, and the grouting process and high-efficiency and synchronous grouting process is realized.
2. The integrated construction equipment for the self-vibrating jet grouting anchor rod according to claim 1, wherein the integrated construction equipment comprises the following components: the jet flow spray pipes are conical and straight, and 3-6 jet flow spray pipes are arranged on the whole body at the front end of the high-pressure rotary slurry mixer.
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| CN201710896264.3A CN107476814B (en) | 2017-09-28 | 2017-09-28 | Integrated construction equipment and method for self-vibration jet grouting anchor rod |
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| CN201710896264.3A CN107476814B (en) | 2017-09-28 | 2017-09-28 | Integrated construction equipment and method for self-vibration jet grouting anchor rod |
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| CN107476814B true CN107476814B (en) | 2023-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108532593B (en) * | 2018-04-23 | 2024-05-03 | 山东省地矿工程勘察院 | Self-advancing anchor rod construction special tool and method for complex stratum |
| CN110219308B (en) * | 2018-05-29 | 2021-04-20 | 宜昌明磊建设工程有限公司 | Soil nail wall is slip casting device for side slope support |
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