CN110644934A - Advanced grouting drill rod - Google Patents
Advanced grouting drill rod Download PDFInfo
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- CN110644934A CN110644934A CN201911125713.XA CN201911125713A CN110644934A CN 110644934 A CN110644934 A CN 110644934A CN 201911125713 A CN201911125713 A CN 201911125713A CN 110644934 A CN110644934 A CN 110644934A
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- pipe
- grouting
- drilling
- arc
- limiting
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- 238000005553 drilling Methods 0.000 claims abstract description 87
- 239000011440 grout Substances 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000007569 slipcasting Methods 0.000 claims description 11
- 230000002265 prevention Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 19
- 239000007788 liquid Substances 0.000 abstract description 11
- 239000012535 impurity Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 17
- 238000010276 construction Methods 0.000 description 10
- 230000003405 preventing effect Effects 0.000 description 9
- 239000011435 rock Substances 0.000 description 9
- 239000002689 soil Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Soil Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an advanced grouting drill rod, which belongs to a drill rod in the technical field of constructional engineering and aims to prevent the backflow problem of grouting liquid.A technical scheme of the advanced grouting drill rod comprises a drill rod head part and a lengthened part detachably communicated with the drill rod head part, wherein the drill rod head part and the lengthened part respectively comprise a drilling outer pipe and a grouting inner pipe arranged in the drilling outer pipe; the invention provides an advanced grouting drill rod, which adopts acting force of flowing slurry in a pipe to prevent backflow of grouting slurry inside a drilling outer pipe and a grouting inner pipe, and effectively solves the problems that external impurities enter the drill rod to be blocked and backflow of the grouting slurry is prevented.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an advanced grouting drill rod.
Background
The shield method has the characteristics of high construction safety, less ground traffic interference, small influence on the surrounding environment and the like, and is a main construction mode of tunnel engineering. The traditional method generally adopts the ground grouting reinforcement technology. However, when the tunnel is buried deeply, the underground construction conditions are complicated, or the ground does not have the construction conditions, the underground grouting reinforcement technology is adopted. Therefore, effective underground reinforcement of the weak stratum in front of the shield is one of important works for ensuring the safe construction of the shield; the principle of the grouting method is to inject a cementitious grouting material into a stratum to change the physical and mechanical properties of the cementitious grouting material so as to achieve the purpose of anti-permeability reinforcement.
For example, application number CN201020694018.3 discloses a drilling tool for advance support hole forming in tunnel engineering, which aims at the drilling tool in the technical field of effective hole forming of a small pipe for advance grouting in a tunnel weak rock stratum or a cracked and loose structure rock mass. The pneumatic drill comprises a drill bit and a drill rod, wherein the front end of the drill rod is connected with the drill bit, the rear end of the drill rod is connected with a hand pneumatic drill, and the key technology is that a small advanced guide pipe is sleeved on the drill rod. The utility model discloses fine solution the difficult problem of leading little pipe pore-forming in the weak stratum, guaranteed the pore-forming rate of leading little pipe completely, the dado performance is good, creep into efficiently, makes the quality of advance support construction obtain guaranteeing, and to a great extent has avoided because advance support is not enough and the phenomenon that digs, collapses that the next circulation top arch position appears, and the construction progress obviously obtains promoting.
However, when the advanced support pore-forming drilling tool for tunnel engineering is used in actual construction, the backflow of grouting liquid exists, and impurities such as rocks or soil in a drilled hole enter the drilling tool or the advanced grouting small pipe, so that the drilling construction and grouting effects are seriously affected.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the advanced grouting drill rod, the external rock or soil is plugged through the rotating fit between the drilling outer pipe and the grouting inner pipe, meanwhile, the first backflow preventing assembly is arranged between the drilling outer pipe and the grouting inner pipe, the second backflow preventing assembly is arranged inside the grouting inner pipe, the backflow of grouting liquid inside the drilling outer pipe and the backflow of grouting liquid inside the grouting inner pipe are prevented by the acting force of the flowing of the grouting liquid in the pipes, and the problems that the external impurities enter the drill rod to be blocked and the backflow of the grouting liquid is prevented are effectively solved.
The utility model provides an advance slip casting drilling rod, includes the drilling rod head, can dismantle the extension portion of intercommunication with the drilling rod head, drilling rod head and extension portion all move the outer tube and set up the slip casting inner tube of moving the outer tube inside drilling including drilling, and extension portion includes extension portion outer tube and sets up at the extension portion inner tube of extension portion outer tube inside, drilling moves the outer tube and is provided with a plurality ofly and drills the first grout outlet hole of moving the inside intercommunication of outer tube, the slip casting inner tube is provided with a plurality of second grout outlet holes with the inside intercommunication of slip casting inner tube, the slip casting inner tube is provided with the shutoff head along the outer wall, and extension portion bores and moves the inside first anti-return subassembly that is provided with of outer tube, and first anti-return subassembly includes and drills a plurality of spacing blades that the articulated setting of outer tube inner wall, adjacent two the edge of spacing blade can be hugged closely, the inside second anti-return subassembly that is.
Preferably, slip casting inner tube overcoat is provided with the bearing, it is provided with a plurality of anchor bars, a plurality of to bore outer tube inner wall equipartition the other end and the bearing inner race fixed connection of anchor bar.
Preferably, the plugging head comprises an arc-surface plugging head and a connecting rod fixedly connected with the arc-surface plugging head, the other end of the connecting rod is fixedly connected with the grouting inner pipe, and the distance between the highest point of the arc-surface plugging head and the grouting inner pipe is equal to the distance between the inner wall of the drilling outer pipe and the outer wall of the grouting inner pipe.
Preferably, the limiting blades comprise arc-shaped hinge rods and fan-shaped blades connected with the arc-shaped hinge rods, arc-shaped hinge grooves are formed in the positions, close to the arc-shaped hinge rods, of the inner walls of the outer tubes of the lengthening portions, and the arc-shaped hinge rods are arranged inside the arc-shaped hinge grooves.
Preferably, the second backflow prevention component comprises a plurality of second limiting blades hinged to the inner wall of the long portion inner tube, the second limiting blades are multiple in number, the tail ends of the second limiting blades are provided with second arc-shaped hinge rods, the inner wall of the long portion inner tube is provided with hinged rotating limiting grooves, the hinged rotating limiting grooves comprise hinge grooves sleeved outside the second arc-shaped hinge rods, the limiting grooves are communicated with the hinge grooves, limiting rods are arranged at positions, close to the outer wall of the long portion inner tube, of the second arc-shaped hinge rods, and the limiting rods are arranged in the limiting grooves.
Preferably, the spacing blade comprises two straight edges and an arc-shaped edge, and the two straight edges are provided with a rubber layer.
Preferably, the edge of the second spacing blade is provided with a rubber layer.
Preferably, the grouting inner pipe in the drill rod head part is provided with an internal thread, the internal thread is arranged at the feed end of the drill rod head part, one end of the extension part inner pipe in the extension part is provided with an external thread, and the other end of the extension part inner pipe in the extension part is provided with an internal thread.
Preferably, the end face of the outer tube of the extension part arranged in the extension part is provided with a rubber ring.
The invention has the beneficial effects that:
1. according to the invention, the plugging head capable of plugging the first grout outlet is arranged between the drilling outer pipe and the grouting inner pipe arranged in the drill rod head, so that the drilling outer pipe can be isolated from the outside, and impurities such as soil, gravel and the like in a drilled hole are prevented from entering the drilling outer pipe, so that the drilling outer pipe and the grouting inner pipe are effectively protected, and the inner blockage is prevented; the first anti-backflow component is arranged in the extension drilling outer pipe, the limiting blades in the first anti-backflow component are hinged with the inner wall of the drilling outer pipe, because the grouting inner pipe is arranged in the drilling outer pipe, when the grout impacts from one surface of the limiting blade and flows, the slurry flows in an impact way from the other side of the limiting blade, so that the other end of the limiting blade, which is hinged with the limiting blade, is tightly clamped and locked on the pipe surface of the grouting inner pipe, thereby realizing the flowing of the slurry in a single direction and further realizing the problem of preventing backflow, its simple structure and effective need not adopt complicated valve body structure just to realize, simultaneously, sets up second anti-return assembly at the inside same principle that adopts of extension portion inner tube, and the spacing blade of second in the second anti-return assembly passes through the rotation of spacing groove spacing, has realized the flow of thick liquid unidirectional direction equally, realizes the effect of preventing flowing backwards.
2. According to the invention, the rubber layer is arranged on the linear edge of the limiting blade and the rubber layer is arranged on the edge of the second limiting blade, so that when the limiting blades are mutually closely folded under the action of backflow slurry, a good sealing effect can be realized between two adjacent limiting blades, and a good backflow preventing effect is realized.
3. According to the invention, the position of the cambered surface plugging head, which is close to the inner wall of the drilling outer pipe, is in a cambered surface shape, so that the cambered surface plugging head can rotate along the circumferential direction of the inner wall of the drilling outer pipe under the rotation action of the grouting inner pipe, and the first grout outlet arranged on the inner wall of the drilling outer pipe can be effectively plugged.
4. According to the invention, the structure of the drill rod head part and the detachably communicated lengthening part is carried out on the drill rod, the grouting inner pipe in the drill rod head part and the lengthening part inner pipe in the lengthening part are detachably connected in a threaded manner, the drilling outer pipe in the drill rod head part and the lengthening part outer pipe in the lengthening part are in close contact connection under the action of the connected grouting inner pipe, and meanwhile, a rubber layer is arranged at the close contact connection part of the lengthening part outer pipe and the drilling outer pipe, so that the lengthening part outer pipe and the drilling outer pipe can be in sealed connection, and the sealing effect between the connected lengthening part outer pipe and the drilling outer pipe is realized.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of grouting a loose rock mass;
FIG. 2 is a schematic view of a drill stem head;
FIG. 3 is a schematic cross-sectional view of a drill pipe head structure;
FIG. 4 is a schematic view of the elongated portion;
FIG. 5 is a schematic structural view of a second backflow prevention unit;
FIG. 6 is a schematic top view of a second backflow prevention group;
FIG. 7 is a schematic view of the first anti-backflow component and the inner tube of the extension portion;
FIG. 8 is a schematic view of the first backflow prevention assembly deployed for normal slurry flow.
In the attached drawings, 1-a drill rod head, 2-an extension part, 3-a drilling outer pipe, 4-a grouting inner pipe, 5-a first grout outlet hole, 6-a second grout outlet hole, 7-a plugging head, 8-an extension part drilling outer pipe, 9-a first anti-backflow component, 10-a limiting blade, 11-a second anti-backflow component, 12-a bearing, 13-a reinforcing rod, 14-a cambered surface plugging head, 15-a connecting rod, 16-a cambered hinging rod, 17-a fan-shaped blade, 18-a cambered hinging groove, 19-a second limiting blade, 20-a second cambered hinging rod, 21-a hinging and rotating limiting groove, 22-a hinging groove, 23-a limiting groove, 24-a limiting rod, 26-a reinforcing area, 27-a drill rod, 28-undisturbed soil, 29-an extension part outer pipe, 29-a hinging and rotating limiting groove, 30-extension inner pipe.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
An advanced grouting drill rod comprises a drill rod head part 1 and an extension part 2 detachably communicated with the drill rod head part 1, wherein the drill rod head part 1 and the extension part 2 respectively comprise a drilling outer pipe 3 and a grouting inner pipe 4 arranged inside the drilling outer pipe 3, the extension part 2 comprises an extension part outer pipe 29 and an extension part inner pipe 30 arranged inside the extension part outer pipe 29, the drilling outer pipe 3 is provided with a plurality of first grout outlet holes 5 communicated with the drilling outer pipe 3, the grouting inner pipe 4 is provided with a plurality of second grout outlet holes 6 communicated with the grouting inner pipe 4, the grouting inner pipe 4 is provided with a plugging head 7 along the outer wall, a first anti-backflow component 9 is arranged inside the extension part outer pipe 29, the first anti-backflow component 9 comprises a plurality of limiting blades 10 hinged with the inner wall of the extension part outer pipe 29, the edges of two adjacent limiting blades 10 can be tightly attached, a second anti-backflow component 11 is arranged inside the extension part inner pipe 30, the drilling outer pipe 3 is communicated with the extension part outer pipe 29, and the grouting inner pipe 4 is communicated with the extension part inner pipe 30;
the plugging head 7 capable of plugging the first grout outlet 5 is arranged between the drilling outer pipe 3 and the grouting inner pipe 4 arranged in the drill pipe head 1, so that the drilling outer pipe 3 can be isolated from the outside, and impurities such as soil and gravel in drilling can be prevented from entering the drilling outer pipe 3, so that the drilling outer pipe 3 and the grouting inner pipe 4 can be effectively protected, and the inner plugging can be prevented; through setting up the first backflow-preventing assembly 9 in the drilling outer tube 3 of the lengthened portion 2, the spacing blade 10 in the first backflow-preventing assembly 9 is set up with the inner wall of the drilling outer tube 3 articularly, because set up the effects of the inner tube 4 of slip casting in the drilling outer tube 3, when the thick liquid impacts and realizes flowing from one side of the spacing blade 10, the thick liquid impacts and flows from another side of the spacing blade 10 and makes the other end that the spacing blade 10 articularly connects clamp and lock on the tube surface of the inner tube of the lengthened portion, thus realize the single-direction flow of the thick liquid, thus realize the problem of preventing the backflow, its simple in construction and effective, do not need to adopt the complicated valve body structure to realize, meanwhile, adopt the same principle to set up the second backflow-preventing assembly 11 in the inner tube of the lengthened portion, the second spacing blade 19 in the second backflow-preventing assembly 11 is limited through the rotation of the spacing groove 23, has realized the single-direction flow of, the backflow prevention effect is realized.
Preferably, a bearing 12 is sleeved outside the grouting inner pipe 4, a plurality of reinforcing rods 13 are uniformly distributed on the inner wall of the drilling outer pipe 3, and the other ends of the reinforcing rods 13 are fixedly connected with the outer ring of the bearing; through setting up the rubber layer to the sharp edge of spacing blade 10 and setting up the rubber layer to the edge of second spacing blade 19, strengthen a plurality of spacing blades 10 under the effect of backward flow thick liquid, when producing the state of hugging closely each other in drawing in, can realize fine sealed effect between two adjacent spacing blades 10 to realize fine effect of preventing backward flow.
Preferably, the plugging head 7 comprises an arc-shaped plugging head 14 and a connecting rod 15 fixedly connected with the arc-shaped plugging head 14, the other end of the connecting rod 15 is fixedly connected with the grouting inner pipe 4, and the distance between the highest point of the arc-shaped plugging head 14 and the grouting inner pipe 4 is equal to the distance between the inner wall of the drilling outer pipe 3 and the outer wall of the grouting inner pipe 4; the position that cambered surface shutoff head 14 is close to 3 inner walls of brill moves outer tube is the cambered surface form, realizes that cambered surface shutoff head 14 can rotate along the circumference of 3 inner walls of brill moves outer tube from this under the rotation effect of slip casting inner tube 4 to can carry out effectual shutoff to the first grout outlet 5 that sets up on the 3 inner walls of brill moves outer tube.
Preferably, the limiting vane 10 comprises an arc-shaped hinge rod 16 and a fan-shaped vane 17 connected with the arc-shaped hinge rod 16, an arc-shaped hinge groove 18 is formed in the inner wall of the outer tube 29 of the lengthened part and close to the arc-shaped hinge rod 16, and the arc-shaped hinge rod 16 is arranged inside the arc-shaped hinge groove 18.
Preferably, the second backflow-preventing component 11 includes a plurality of second limiting blades 19 hinged to the inner wall of the elongated portion inner tube 30, a plurality of second limiting blades 19 are provided at ends of the second limiting blades 19, a second arc-shaped hinge rod 20 is provided at the inner wall of the elongated portion inner tube 30, a hinge rotation limiting groove 21 is provided at the inner wall of the elongated portion inner tube 30, the hinge rotation limiting groove 21 includes a hinge groove 22 externally sleeved on the second arc-shaped hinge rod 20 and a limiting groove 23 communicated with the hinge groove 22, a limiting rod 24 is provided at a position of the second arc-shaped hinge rod 20 close to the outer wall of the elongated portion inner tube 30, and the limiting rod 24 is disposed in the limiting groove 23.
Preferably, the check vane 10 comprises two rectilinear edges provided with a rubber layer and one arcuate edge.
Preferably, the edge of the second spacing blade 19 is provided with a rubber layer.
Preferably, the grouting inner pipe 4 in the drill pipe head 1 is provided with an internal thread, the internal thread is arranged at the feed end of the drill pipe head 1, one end of the extension inner pipe in the extension part 2 is provided with an external thread, and the other end of the extension inner pipe in the extension part 2 is provided with an internal thread.
Preferably, the end face of the drilling outer tube 3 arranged in the lengthened part is provided with a rubber ring; carry out drilling rod head 1 and the structure of the extension portion 2 that can dismantle the intercommunication through to the drilling rod, but carry out threaded dismantlement with the slip casting inner tube 4 in the drilling rod head 1 and the extension portion inner tube in the extension portion 2 simultaneously and connect, drilling in the drilling rod head 1 moves the outer tube 3 and the extension portion outer tube in the extension portion 2 and realizes hugging closely under the effect of the slip casting inner tube 4 after the connection and connect, and simultaneously, the junction of hugging closely that moves the outer tube at the extension portion outer tube and drills sets up the rubber layer, make between the two can sealing connection, thereby realize the sealed effect between the extension portion outer tube of connection and the drilling outer tube.
Example 1
The embodiment provides an advanced grouting drill rod, which comprises a drill rod head part 1 and an extension part 2 detachably communicated with the drill rod head part 1, wherein the drill rod head part 1 and the extension part 2 respectively comprise a drilling outer pipe 3 and a grouting inner pipe 4 arranged inside the drilling outer pipe 3, the extension part 2 comprises an extension part outer pipe 29 and an extension part inner pipe 30 arranged inside the extension part outer pipe 29, the drilling outer pipe 3 is provided with a plurality of first grout outlet holes 5 communicated with the interior of the drilling outer pipe 3, the grouting inner pipe 4 is provided with a plurality of second grout outlet holes 6 communicated with the interior of the grouting inner pipe 4, the grouting inner pipe 4 is provided with a blocking head 7 along the outer wall, a first anti-backflow assembly 9 is arranged inside the lengthened portion outer pipe 29, the first anti-backflow assembly 9 comprises a plurality of limiting blades 10 hinged with the inner wall of the lengthened portion outer pipe 29, the edges of two adjacent limiting blades 10 can be tightly attached, and a second anti-backflow assembly 11 is arranged inside the lengthened portion inner pipe 30;
the operation flow comprises the following operations:
the method comprises the following steps: installing a shield machine, and installing a drill rod of the shield machine close to a rock body;
step two: starting the drill rod, drilling the drill rod to a rock body, and enabling the distance between the head of the drill rod and the cutter head to be as follows: less than 5 m;
step three: providing grouting slurry for a drill rod which is drilled into a rock body, and injecting the grouting slurry into a reinforcing area of the rock body;
step four: the cutter head is maintained, the soil bin is cleaned, and the cutter head is not chiseled to open at the moment; the integrity of the cutter head surface is guaranteed, the cutter is replaced from bottom to top, the table surface is stably installed during cutter replacement, the bolt and the self-locking nut are disassembled, the old cutter is removed, the new cutter is replaced, and the bolt is tightened;
step five: and when the grouting slurry is solidified, adjusting the shield machine and enabling the shield machine to be in a state to be propelled.
The plugging head 7 capable of plugging the first grout outlet 5 is arranged between the drilling outer pipe 3 and the grouting inner pipe 4 arranged in the drill pipe head 1, so that the drilling outer pipe 3 can be isolated from the outside, and impurities such as soil and gravel in drilling can be prevented from entering the drilling outer pipe 3, so that the drilling outer pipe 3 and the grouting inner pipe 4 can be effectively protected, and the inner plugging can be prevented; through arranging the first anti-backflow component 9 in the drilling outer pipe 3 of the lengthening part 2, the limiting blade 10 in the first anti-backflow component 9 is hinged with the inner wall of the drilling outer pipe 3, due to the effect of arranging the grouting inner pipe 4 in the drilling outer pipe 3, when the slurry impacts from one side of the limiting blade 10 and flows, the slurry impacts from the other side of the limiting blade 10 and flows, so that the other end of the limiting blade 10 hinged is clamped and locked on the pipe surface of the grouting inner pipe 4, thereby realizing the flowing of the slurry in a single direction, and further realizing the backflow prevention problem, the structure is simple and effective, the slurry can be realized without adopting a complex valve body structure, meanwhile, the second anti-backflow component 11 is arranged in the grouting inner pipe 4 by adopting the same principle, the second limiting blade 19 in the second anti-backflow component 11 is limited by the rotation of the limiting groove 23, and the flowing of the slurry in the single direction is also realized, the backflow prevention effect is realized.
Example 2
The embodiment is further optimized on the basis of embodiment 1, and specifically, a bearing 12 is sleeved outside the grouting inner pipe 4, a plurality of reinforcing rods 13 are uniformly distributed on the inner wall of the drilling outer pipe 3, and the other ends of the plurality of reinforcing rods 13 are fixedly connected with the outer ring of the bearing; the rubber layer is arranged on the linear edge of the limiting blade 10 and the rubber layer is arranged on the edge of the second limiting blade 19, so that when the limiting blades 10 are in a mutually close-fitted and furled state under the action of backflow slurry, a good sealing effect can be realized between every two adjacent limiting blades 10, and a good backflow preventing effect is realized;
as a preferred technical solution of this embodiment: spacing blade 10 and the spacing blade 19 of second all set up to spherical sector form, when a plurality of spacing blades 10 realize drawing in when changeing the attitude with open the state, can make and can move opening of outer tube 3 inner wall to boring in the laminating of outer tube 3 inside between a plurality of spacing blades 10 to increase the flux, on the same principle, articulated rotation between a plurality of the spacing blades 19 of second also can realize so effect.
Example 3
The embodiment is further optimized on the basis of embodiment 1, a bearing 12 is sleeved outside the grouting inner pipe 4, a plurality of reinforcing rods 13 are uniformly distributed on the inner wall of the drilling outer pipe 3, and the other ends of the plurality of reinforcing rods 13 are fixedly connected with the outer ring of the bearing; the rubber layer is arranged on the linear edge of the limiting blade 10 and the rubber layer is arranged on the edge of the second limiting blade 19, so that when the limiting blades 10 are in a mutually close-fitted and furled state under the action of backflow slurry, a good sealing effect can be realized between every two adjacent limiting blades 10, and a good backflow preventing effect is realized;
as a preferred technical solution of this embodiment: the reinforcing rods 13 fixedly connected with the outer ring of the bearing 12 are made of carbon fiber materials, the diameter of each reinforcing rod 13 is 3-10mm, the diameter of each reinforcing rod 13 is preferably 5mm, and the reinforcing rods 1 are made of the carbon fiber materials, so that the circulation of the drilling outer tube 3 is large while the high-strength stable connection of the bearing 12 is strengthened, and the problem that the circulation of slurry inside the drilling outer tube 3 is blocked is solved.
Example 4
In this embodiment, further optimization is performed on the basis of embodiment 1, and the proportioning conditions of the slurry are as follows: initial setting time is 20 ~ 30 seconds, cement: 1:1 of water, 1:1 of water glass: 1:1 of water; initial setting time is 40 ~ 80 seconds, cement: 1:1 of water, 1:1 of water glass: 1:2 of water; initial setting time is 120 ~ 180 seconds, cement: 1:1 of water, 1:1 of water glass: water 1: 3.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. The utility model provides a advance slip casting drilling rod, includes drilling rod head (1), can dismantle extension portion (2) of intercommunication with drilling rod head (1), its characterized in that: the drill rod head (1) comprises a drilling outer pipe (3) and a grouting inner pipe (4) arranged inside the drilling outer pipe (3), the lengthening part (2) comprises a lengthening part outer pipe (29) and a lengthening part inner pipe (30) arranged inside the lengthening part outer pipe (29), the outer drilling pipe (3) is provided with a plurality of first grout outlet holes (5) communicated with the interior of the outer drilling pipe (3), the inner grouting pipe (4) is provided with a plurality of second grout outlet holes (6) communicated with the inside of the inner grouting pipe (4), the grouting inner pipe (4) is provided with a blocking head (7) along the outer wall, a first anti-backflow assembly (9) is arranged inside the lengthened outer pipe (29), the first anti-backflow assembly (9) comprises a plurality of limiting blades (10) hinged with the inner wall of the lengthened outer pipe (29), the edges of two adjacent limiting blades (10) can be tightly attached, and a second backflow prevention assembly (11) is arranged inside the lengthened part inner pipe (30).
2. A advanced grouting drill pipe as claimed in claim 1, wherein: the outer sleeve of the grouting inner tube (4) is provided with a bearing (12), a plurality of reinforcing rods (13) are uniformly distributed on the inner wall of the drilling outer tube (3), and the other ends of the reinforcing rods (13) are fixedly connected with the outer ring of the bearing.
3. A advanced grouting drill pipe as claimed in claim 2, characterized in that: the grouting device is characterized in that the plugging head (7) comprises an arc-surface plugging head (14) and a connecting rod (15) fixedly connected with the arc-surface plugging head (14), the other end of the connecting rod (15) is fixedly connected with the grouting inner tube (4), and the distance between the highest point of the arc-surface plugging head (14) and the grouting inner tube (4) is equal to the distance between the inner wall of the drilling outer tube (3) and the outer wall of the grouting inner tube (4).
4. A advanced grouting drill pipe as claimed in claim 1, 2 or 3, characterized in that: spacing blade (10) include arc articulated rod (16), are connected fan-shaped blade (17) that set up with arc articulated rod (16), the position that extension portion outer tube (29) inner wall is close to arc articulated rod (16) is provided with arc articulated groove (18), arc articulated rod (16) are arranged in inside arc articulated groove (18).
5. A advanced grouting drill pipe as claimed in claim 1, wherein: the second backflow prevention assembly (11) comprises a plurality of second limiting blades (19) hinged to the inner wall of the lengthening portion inner tube (30), the second backflow prevention assembly is multiple in that the ends of the second limiting blades (19) are provided with second arc-shaped hinge rods (20), the inner wall of the lengthening portion inner tube (30) is provided with hinged rotating limiting grooves (21), the hinged rotating limiting grooves (21) comprise hinge grooves (22) sleeved on the second arc-shaped hinge rods (20) and limiting grooves (23) communicated with the hinge grooves (22), limiting rods (24) are arranged at positions, close to the outer wall of the lengthening portion inner tube (30), of the second arc-shaped hinge rods (20), and the limiting rods (24) are arranged in the limiting grooves (23).
6. A advanced grouting drill pipe as claimed in claim 1, wherein: the limiting blade (10) comprises two straight edges and an arc-shaped edge, and rubber layers are arranged on the two straight edges.
7. A advanced grouting drill pipe as claimed in claim 5, wherein: the edge of the second limiting blade (19) is provided with a rubber layer.
8. A advanced grouting drill pipe as claimed in claim 1, wherein: the drilling rod comprises a drilling rod head (1), and is characterized in that a grouting inner tube (4) in the drilling rod head (1) is provided with an internal thread, the internal thread is arranged at the feed end of the drilling rod head (1), one end of a lengthened portion inner tube (30) in the lengthened portion (2) is provided with an external thread, and the other end of the lengthened portion inner tube (30) in the lengthened portion (2) is provided with an internal thread.
9. A advanced grouting drill pipe as claimed in claim 1, wherein: the end surface of an outer tube (29) of the lengthening part arranged in the lengthening part is provided with a rubber ring.
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| CN201911125713.XA CN110644934B (en) | 2019-11-18 | 2019-11-18 | Advanced grouting drill rod |
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| CN201911125713.XA CN110644934B (en) | 2019-11-18 | 2019-11-18 | Advanced grouting drill rod |
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| CN110644934B CN110644934B (en) | 2024-09-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980575A (en) * | 2020-09-14 | 2020-11-24 | 浙江海聚科技有限公司 | Double-liquid grouting drill rod suitable for top hammer impact type drilling machine |
| CN113006708A (en) * | 2021-02-20 | 2021-06-22 | 山东大学 | Slurry unidirectional flow drilling and grouting integrated drill rod and construction method |
| CN113189312A (en) * | 2021-04-27 | 2021-07-30 | 中国一冶集团有限公司 | Simulation assembly type prefabricated wall grouting process test system |
| CN113266371A (en) * | 2021-06-15 | 2021-08-17 | 中交二公局萌兴工程有限公司 | Rock clamping fixing structure in weak surrounding rock small-clear-distance tunnel and construction method thereof |
| CN113431029A (en) * | 2021-07-11 | 2021-09-24 | 广州市地平线岩土工程有限公司 | Grouting construction method for foundation pit waterproof curtain |
| CN114837634A (en) * | 2022-04-28 | 2022-08-02 | 克拉玛依四维石油科技有限公司 | Oil field is carbon dioxide layering injection instrument in pit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2370067Y (en) * | 1998-08-10 | 2000-03-22 | 叶长生 | High pressure slip casting small drill bit |
| KR100963682B1 (en) * | 2009-07-24 | 2010-06-15 | 주식회사 비엠테크 | Anchor assembly, method for reinforcing slope using anchor assembly |
| KR101015222B1 (en) * | 2010-07-07 | 2011-02-18 | 주식회사 대덕지질 | Multistage grouting apparatus using packer |
| CN207739264U (en) * | 2017-12-21 | 2018-08-17 | 广东省水利水电第三工程局有限公司 | A kind of Grouting Pipe |
| CN210858603U (en) * | 2019-11-18 | 2020-06-26 | 中铁电气化局集团有限公司 | Advanced grouting drill rod |
-
2019
- 2019-11-18 CN CN201911125713.XA patent/CN110644934B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2370067Y (en) * | 1998-08-10 | 2000-03-22 | 叶长生 | High pressure slip casting small drill bit |
| KR100963682B1 (en) * | 2009-07-24 | 2010-06-15 | 주식회사 비엠테크 | Anchor assembly, method for reinforcing slope using anchor assembly |
| KR101015222B1 (en) * | 2010-07-07 | 2011-02-18 | 주식회사 대덕지질 | Multistage grouting apparatus using packer |
| CN207739264U (en) * | 2017-12-21 | 2018-08-17 | 广东省水利水电第三工程局有限公司 | A kind of Grouting Pipe |
| CN210858603U (en) * | 2019-11-18 | 2020-06-26 | 中铁电气化局集团有限公司 | Advanced grouting drill rod |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980575A (en) * | 2020-09-14 | 2020-11-24 | 浙江海聚科技有限公司 | Double-liquid grouting drill rod suitable for top hammer impact type drilling machine |
| CN113006708A (en) * | 2021-02-20 | 2021-06-22 | 山东大学 | Slurry unidirectional flow drilling and grouting integrated drill rod and construction method |
| CN113189312A (en) * | 2021-04-27 | 2021-07-30 | 中国一冶集团有限公司 | Simulation assembly type prefabricated wall grouting process test system |
| CN113266371A (en) * | 2021-06-15 | 2021-08-17 | 中交二公局萌兴工程有限公司 | Rock clamping fixing structure in weak surrounding rock small-clear-distance tunnel and construction method thereof |
| CN113431029A (en) * | 2021-07-11 | 2021-09-24 | 广州市地平线岩土工程有限公司 | Grouting construction method for foundation pit waterproof curtain |
| CN113431029B (en) * | 2021-07-11 | 2022-06-21 | 广州市地平线岩土工程有限公司 | Grouting construction method for foundation pit waterproof curtain |
| CN114837634A (en) * | 2022-04-28 | 2022-08-02 | 克拉玛依四维石油科技有限公司 | Oil field is carbon dioxide layering injection instrument in pit |
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| CN110644934B (en) | 2024-09-03 |
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