AU2021271378B2 - Water jet technology-based anchor cable self-drilling and rapid anchoring construction method - Google Patents
Water jet technology-based anchor cable self-drilling and rapid anchoring construction method Download PDFInfo
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- AU2021271378B2 AU2021271378B2 AU2021271378A AU2021271378A AU2021271378B2 AU 2021271378 B2 AU2021271378 B2 AU 2021271378B2 AU 2021271378 A AU2021271378 A AU 2021271378A AU 2021271378 A AU2021271378 A AU 2021271378A AU 2021271378 B2 AU2021271378 B2 AU 2021271378B2
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- anchoring agent
- hollow anchor
- anchoring
- cylinder
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- 238000004873 anchoring Methods 0.000 title claims abstract description 149
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 238000005553 drilling Methods 0.000 title claims abstract description 89
- 238000010276 construction Methods 0.000 title claims abstract description 32
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 119
- 230000007246 mechanism Effects 0.000 claims abstract description 87
- 239000000463 material Substances 0.000 claims description 73
- 239000003245 coal Substances 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 23
- 239000011435 rock Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 22
- 239000004570 mortar (masonry) Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000003823 mortar mixing Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 230000032258 transport Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- 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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
- E21B15/045—Hydraulic, pneumatic or electric circuits for their positioning
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A water jet technology-based anchor cable self-drilling and rapid anchoring construction method, comprising the following steps: adjusting an angle-adjustable drilling mechanism so that a hollow anchor cable (1) faces a preset drilling direction; connecting a water jet generation device to the rear end of the hollow anchor cable (1); starting the water jet generation device and the angle-adjustable drilling mechanism to perform a drilling operation; after the drilling operation is completed, coaxially connecting a rigid pipe (4) to the rear end of the hollow anchor cable (1), and mounting the rigid pipe (4) onto the angle-adjustable drilling mechanism; connecting a discharge port of an anchoring agent feeding device to the rear end of the rigid pipe (4); and starting the anchoring agent feeding device and the angle-adjustable drilling mechanism to perform an anchoring operation on the hollow anchor cable (1) in a drilled hole.
Description
Technical Field
The present disclosure belongs to the technical field of mining engineering, in particular
to a self-drilling anchor cable and rapid anchoring construction method based on water jet
technology.
Background
Anchor cable support is a widely used technology for such as mine engineering,
geotechnical engineering, and underground engineering. Either the length or the anchoring range
of the anchor cable is large, and it is used in conjunction with the anchor support, and has become
the most important support method for coal mine roadways in China.
The length of the anchor cable varies from 3 to 4 meters to more than ten meters, and the
length of the commonly used anchor cable in coal mines is about 6 to 10 m, and the existing
construction process is: using the anchor cable drilling rig to make holes, and the length of the
drill rod being generally Im, so it is necessary to use 6-10 drill rods to complete the drilling
construction, after which withdrawing the drill rods one by one; using the anchor cable to send
the anchoring agent into the borehole. The anchoring length of the anchor cable is generally
about 2m, and the number of anchoring agent rolls used is 4-6, sometimes the anchoring agent
cannot be fed at one time, and needs to be fed in stages; finally, rotating the anchor cable to stir
the anchoring agent to complete the anchoring and bonding, followed by adding pallets and locks
to complete the anchorage. The construction time of a single anchor cable is about 20 to 30
minutes. When the coal and rock mass in the anchoring area is relatively broken or the stress is
high, after the drilling of the anchor cable is completed and the drill rod is withdrawn, the
borehole will be deformed or even the hole will collapse, making it difficult to send the anchoring
agent and the anchor cable or the hole may be wasted. Therefore, the construction process of the
anchor cable is cumbersome, takes a long time, and the hole is easy to collapse, which are the
main shortcomings of the existing technology.
Summary
In order to solve the deficiencies in the prior art, the present disclosure provides a kind of
self-drilling anchor cable and rapid anchoring construction method based on waterjet technology
that is environmentally friendly, safe, easy to operate, and high in construction efficiency.
In order to solve the above-mentioned technical problem, the present disclosure adopts
following technical scheme: the self-drilling anchor cable and rapid anchoring construction
method based on water jet technology, comprises the following steps:
(1) installing an angle-adjustable drilling mechanism at the rear end of the place designated
for anchor cable support construction, and installing a water jet generating device and an
anchoring agent feeding device at the rear end of the angle-adjustable drilling mechanism;
(2) installing a high-pressure nozzle on the front end of the hollow anchor cable;
(3) installing the hollow anchor cable on the angle-adjustable drilling mechanism;
(4) adjusting the angle-adjustable drilling mechanism so that the hollow anchor cable faces
the preset drilling direction, and then positioning the angle of the angle-adjustable drilling
mechanism;
(5) connecting the water outlet of the water outlet pipe of the water jet generating device
with the rear end of the hollow anchor cable via thefirst high-pressure rotary sealing joint;
(6) starting the water jet generating device and the angle-adjustable drilling mechanism to
drill the front side of the coal rock wall;
(7) closing the water jet generating device and the angle-adjustable drilling mechanism,
and disassembling the first high-pressure rotary sealing joint when there is a reserved section at
the rear end of the hollow anchor cable left outside the hole of the borehole;
(8) connecting the rear end of the hollow anchor cable to the previous rigid pipe in the
same axial direction, and installing the rigid pipe on the angle-adjustable drilling mechanism;
(9) connecting the outlet of the anchoring agent feeding device with the rear end of the
rigid pipe via the second high-pressure rotary sealing joint;
(10) starting the anchoring agent feeding device and the angle-adjustable drilling
mechanism to perform the anchoring operation on the hollow anchor cable in the borehole;
(11) closing the anchoring agent feeding device and the angle-adjustable drilling
mechanism after the anchoring agent overflows from the hole of the borehole;
(12) installing the anchor cable tray and rigging at the rear end of the hollow anchor cable, and pre-tightening the hollow anchor cable to complete the anchoring construction of the hollow anchor cable after injecting a certain amount of anchoring agent and stirring and mixing it under the rotation of the hollow anchor cable, the angle-adjustable drilling mechanism comprises a vertically arranged hydraulic cylinder, the lower end of the cylinder body of the hydraulic cylinder is provided with a fixing bracket, the upper end of the piston rod of the hydraulic cylinder is provided with a positioning frame, and the upper left side of the cylinder body of the hydraulic cylinder is provided with a fixing shaft horizontally along front and rear direction. A rectangular frame is rotatably connected to the fixing shaft. The rectangular frame is provided with a slideway and a cylinder along the front and rear directions. The slideway is slidably provided with a sliding plate. The rear side of the sliding plate is provided with an anchor cable clamping and rotating mechanism. The cylinder is located under the slideway. The rear end of the cylinder is hinged to the lower part of the rear side of the rectangular frame. The front end of the cylinder is connected to the bottom of the sliding plate through a connecting seat. A vertical plate is fixed on the upper left side of the cylinder body of the hydraulic cylinder. The fixing shaft passes vertically through the vertical plate and the vertical plate is arranged vertically and parallel to the slideway. The vertical plate is provided with an arc-shaped guide hole with the fixed axis as the center line. The right side of the rectangular frame is provided with a positioning bolt. The right end of the positioning bolt passes through the arc-shaped guide hole on the vertical plate and is press-fitted with the vertical plate by the nut; the upper part of the rear side of the rectangular frame is provided with an anchor cable rotation guide fixture corresponding to both the front and rear of the anchor cable clamping and rotating mechanism; The vertical plate is a semi-circular structure. The straight edge of the vertical plate is arranged vertically and is fixedly connected with the cylinder body of the hydraulic cylinder. The arc-shaped guide hole is located on the rear side of the hydraulic cylinder, and there is an angle scale in the direction at the right side of the vertical plate, along the length direction of the arc shaped guide hole, and the 0 scale of the angle scale is located at the midpoint of the arc-shaped guide hole. The water jet generating device comprises a water bucket or a mortar mixing bucket, a water suction pipe, a water outlet pipe and a high-pressure clean water pump or a mortar pump.
The inlet of the water suction pipe extends under the liquid level of the water bucket or mortar
mixing bucket, the outlet of the water suction pipe is connected with the inlet of the high-pressure
clean water pump or the mortar pump, and the outlet of the high-pressure clean water pump or
the mortar pump is connected with the inlet of the water outlet pipe.
The high-pressure nozzle comprises a nozzle body and a connecting sleeve, and the inner
hole of the connecting sleeve comprises the first internal threaded hole of the front side and the
second internal threaded hole of the rear side, and the aperture of the first internal threaded hole
is smaller than that of the second internal threaded hole. The front end of the hollow anchor cable
extends into and is threaded into the second inner threaded hole, the outer circumference of the
nozzle body is provided with an outer thread, the outer circumference of the nozzle body extends
into and is threaded into the first inner threaded hole, and the front side of the inner circumference
of the nozzle body is provided with two centrally symmetrical injection holes, and the center of
the rear side of the nozzle body is provided with a water passage hole corresponding to the central
hole of the hollow anchor cable. The rear ends of the two injection holes are communicated with
the water passage holes through radially arranged connecting holes, and an inner hexagonal
groove is formed in the middle of the front side of the nozzle body.
The anchoring agent feeding device comprises an anchoring agent A material storage
bucket, an anchoring agent B material storage bucket, a compressed air pipeline, a first intake
pipe, a second intake pipe, a first discharge pipe, a second discharge pipe and a mixing and
discharge pipe, both the inlets of the first intake pipe and the second intake pipe are connected
with the outlet of the compressed air pipe, the outlet of the first intake pipe is connected with the
top of the anchoring agent A material storage bucket, and the outlet of the second intake pipe is
connected with the top of the anchoring agent B material storage bucket, the inlet of the first
discharge pipe is connected with the lower part of the anchoring agent A material storage bucket,
the inlet of the second discharge pipe is connected with the lower part of the anchoring agent B
material storage bucket, and the outlet of the first discharge pipe and the outlet of the second
discharge pipe are both connected with the inlet of the mixing and discharge pipe at the same
time. There is a regulating valve arranged on the mixing and discharge pipe. The anchoring agent
A material storage bucket and the anchoring agent B material storage bucket are both cylindrical
bucket-shaped structure.
In the step (3), the hollow anchor cable is installed on the angle-adjustable drilling
mechanism, specifically, the hollow anchor cable is passed through the anchor cable clamping
and rotating mechanism from the rear to the front and then passed through the anchor cable
rotation guide clamp and is clamped by both the anchor cable clamping and rotating mechanism
and the anchor cable rotation guide fixture are at the same time, and the anchor cable clamping
and rotating mechanism adopts a pneumatic or hydraulic motor to drive the hollow anchor cable
to rotate through a gear transmission mechanism.
The process of step (4) is specifically as follows: first start the hydraulic cylinder, the piston
cylinder of the hydraulic cylinder is stretched upward, and the positioning frame is pressed
against the roof of the roadway, the position of the angle-adjustable drilling mechanism is fixed,
and then the nut on both the front side and the rear side of the side positioning bolt are loosened,
rotate the rectangular frame, the rectangular frame rotates with the fixing shaft as the center line,
the positioning bolt moves in the arc-shaped guide hole, the drilling direction is determined by
the scale on the angle scale, and then the two nuts are tightened to make rectangular frame
positioned.
The process of step (6) is specifically as follows: start the high-pressure clean water pump
or the mortar pump, the anchor cable clamping and rotating mechanism and the cylinder, and
thus high-pressure clean water pump or mortar pump draws clear water or abrasive water in
bucket or mortar mixing bucket and convey it to the high-pressure nozzle through hollow anchor
cable, and sprays it forward through the two injection holes on the high-pressure nozzle to form
a water jet that can break the rock. The cylinder pushes the sliding plate and the anchor cable
clamping and rotating mechanism to move forward along the slideway, the hollow anchor cable
rotates at a certain speed while moving forward, and the waterjets ejected from the two injection
holes forward to the coal rock wall are for high-pressure hydraulic drilling holes, coal chips and
cuttings flow out from the orifice through the annular reduction between the borehole and the
hollow anchor cable. When the stroke of the piston rod of the cylinder reaches the maximum,
the cylinder stops extending, and the anchor cable clamping and rotating mechanism released
the hollow anchor cable, the anchor cable rotation guide clamp clamps the hollow anchor cable,
the piston rod of the cylinder retracts, to drive the sliding plate and the anchor cable clamping
and rotating mechanism move backwards; when moving backward to the initial position, the anchor cable clamping and rotating mechanism clamps the hollow anchor cable, the anchor cable rotation guide clamp loosens the hollow anchor cable, and then the actions as follows are repeated: cylinder drives the sliding plate to move forward, the anchor cable clamping and rotating mechanism drives the hollow anchor cable to rotate, and the high-pressure nozzle at the front end of the hollow anchor cable ejects high-pressure waterjets to perform a hydraulic cutting operation on the coal and rock wall, and when the stroke of the piston rod of the cylinder reaches the maximum, the piston rod of the cylinder is retracted again. The operation is repeated for several times until most of the hollow anchor cables are inserted into the borehole and the hollow anchor cable has a length of 10-15cm left outside the hole, then the high-pressure clean water pump or mortar pump, cylinder and anchor cable clamping and rotating mechanism are turned off. The concrete process of step (10) is specifically as follows: the compressed air pipeline uses the high-compressed air under the coal mine, and the high-compressed air in the compressed air pipeline passes through the first intake pipe and the second intake pipe respectively to pressurize the anchoring agent in the anchoring agent A material storage bucket and the anchoring agent B material storage bucket, the anchoring agent A material enters the mixing and discharge pipe through the first discharge pipe, and the anchoring agent B material enters the mixing and discharge pipe through the second discharge pipe, and the anchorage agent A material and anchoring agent B material enter the high-pressure nozzle forward through the mixing and discharge pipe and the hollow anchor cable, and are ejected through the two injection holes on the high-pressure nozzle. The anchorage agent flows outward and further flows at the bottom of the borehole and flows outside the annular gap between the outer wall of the hollow anchor cable and the inner wall of the borehole, and the annular gap is filled by the anchoring agent A and B materials. During the injection of the anchoring agent, the anchor clamping and rotating mechanism drives the rigid tube and the hollow anchor cable to rotate to make the anchoring agent A material and the anchoring agent B material mixed more uniformly in the borehole; the ratio of the section size of the anchoring agent A material storage bucket to that of the anchoring agent B material storage bucket is the same with the composition ratio of amount of the anchoring agent A material to that of the anchoring agent B material. Under the action of the same compressed air, the discharge flow of the anchoring agent A material and that of the anchoring agent B material are injected into the borehole according to the ratios.
Above-mentioned technical scheme is adopted, to select pure water jet or abrasive water
jet according to the strength and lithology of specific anchor cable anchoring coal rock mass,
wherein pure water jet is used for coal or weak rock mass, and a high-pressure clean water pump
is directly used as power; while abrasive water jets are used for medium-hard or hard rock masses,
and a mortar pump is used as powered.
The water jet generating device can produce high pressure water jet or high pressure
abrasive waterjet, which is transported to the hollow anchor cable by pipeline, and ejected from
the high pressure nozzle through the inner hole of the hollow anchor cable. The angle-adjustable
drilling mechanism with two hydraulic columns (hydraulic cylinders) as the main body can first
adjust and fix the drilling direction, drive the hollow anchor cable to rotate and advance, and the
high-pressure water jet ejected from the high-pressure nozzle realizes the rotation and breakage
of the coal and rock mass, thereby realizing the self-drilling of the hollow anchor cable. After
the hollow anchor cable is drilled forward, the anchoring agent A material and the anchoring
agent B material are sent to the inner hole of the hollow anchor cable by using the downhole
compressed air pipeline and then flow out through the high-pressure nozzle, filling the gap
between the inner wall of the anchoring section and the hollow anchor cable. The hollow anchor
cable continues to rotate to realize the stirring and mixing of the anchoring agent A material and
the anchoring agent B material, thereby realizing the rapid anchoring of the hollow anchor cable.
This method realizes the self-drilling and rapid anchoring of the hollow anchor cable, and the
existing complex procedures such as drilling by the drill rod in sections, withdrawing the drill
rod in sections, pushing in the anchoring agent (re-pushing in if necessary), and anchoring the
anchor cable are simplified into the three processes composed of the self-drilling of the anchor
cable, anchoring agent blowing into and anchor cable anchoring, thereby reducing the procedures
of drilling by anchor rod in sections, withdrawing anchor rod in section and anchoring agent
pushing, which greatly saves anchor cable construction time and improves construction
efficiency; in the area where the coal and rock mass is broken, the deformation or collapse of the
hole often occurs after the drill rod is withdrawn, which makes it difficult for the anchoring agent
and the anchor cable to enter the borehole or even becomes a waste hole. The self-drilling method
of the anchor cable completely solves the problem of the hole collapsing; in addition, the water jet drilling requires a small flow rate, and can be equipped with a pneumatic pump, which is convenient to operate and move. The drilling process does not generate heat, dust, and noise. It is safe to use and has good application prospects, especially suitable for anchor cable construction in coal and rock crushed areas. In sum, the present disclosure has following technical effects: (1) the water jet technology used in the present disclosure belongs to the cold cutting technology, and no heat, sparks, dust is generated during the drilling process, it is intrinsically safe, and has low noise, and is especially suitable for the underground environment of coal mines. (2) the present disclosure omits the operation of drilling by drill rod and drill rod retraction, and is simple to operate, is easy to realize automatic control, is equipped with the high-pressure pump of large flow, is connected with multi-branch pipeline and can also realize the simultaneous construction of multiple anchor cables , the construction efficiency is greatly improved. (3) the present disclosure adopts the hollow anchor cable as the drilling tool, drills and pushes to the bottom of the hole at one time, there is no link of withdrawing the drill rod or withdrawing the anchor cable, after the drilling is formed, there is always an anchor cable serving for supporting, thus it will not be affected by borehole deformation and slump, and it is especially suitable for anchor cable construction in broken coal and rock mass. (4) The anchoring agent of the present disclosure is blown in from the inner hole of the hollow anchor cable, results in no problem that the coiled anchoring agent is difficult to send.
Brief Description of Drawings
Fig. 1 is the structural representation of the present disclosure during self-drilling operation; Fig. 2 is the structural representation of the present disclosure in which the anchoring agent is being blown into the borehole; Fig. 3 is an enlarged view of the high pressure nozzle in Fig. 1.
Detailed Description of Preferred Embodiments
The technical solutions in the embodiments of the present disclosure are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure, obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all implementations. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present disclosure, shall fall within the protection scope of the present disclosure. As shown in Fig. 1, Fig. 2 and Fig. 3, the self-drilling anchor cable and rapid anchoring construction method based on water jet technology of the present disclosure, comprises the following steps: (1)installing an angle-adjustable drilling mechanism at the rear side of the place designated for anchor cable support construction, and installing a water jet generating device and an anchoring agent feeding device at the rear end of the angle-adjustable drilling mechanism; (2) installing a high-pressure nozzle 38 on the front end of the hollow anchor cable 1; (3) installing the hollow anchor cable 1 on the angle-adjustable drilling mechanism; (4) adjusting the angle-adjustable drilling mechanism to make the hollow anchor cable 1 face the preset drilling direction, and then position the angle of the angle-adjustable drilling mechanism; (5) connecting the water outlet of the water outlet pipe of the water jet generating device to the rear end of the hollow anchor cable 1 through the first high-pressure rotary sealing joint 2; (6) starting the water jet generating device and the angle-adjustable drilling mechanism to drill the coal rock wall 3 on the front side; (7) closing the water jet generating device and the angle-adjustable drilling mechanism, and disassembling the first high-pressure rotary sealing joint 2 when there is a reserved section at the rear end of the hollow anchor cable 1 left outside the hole of the borehole,; (8) coaxially connecting the rear end of the hollow anchor cable 1 to the previous rigid pipe 4, and installing the rigid pipe 4 on the angle-adjustable drilling mechanism; (9) connecting the outlet of the anchoring agent feeding device to the rear end of the rigid pipe 4 through the second high-pressure rotary sealing joint 5; (10) starting the anchoring agent feeding device and the angle-adjustable drilling mechanism to perform the anchoring operation on the hollow anchor cable in the borehole; (11) after injecting a certain amount of anchoring agent and stirring and mixing it under the rotation of the hollow anchor cable 1, closing the anchoring agent feeding device and the angle-adjustable drilling mechanism; (12) after the anchoring agent is solidified, installing an anchor cable tray and rigging at the rear end of the hollow anchor cable 1, and pre-tightening the hollow anchor cable 1 to complete the anchoring construction of the hollow anchor cable 1. The angle-adjustable drilling mechanism comprises a hydraulic cylinder 6 arranged vertically, and the lower end of the cylinder body of the hydraulic cylinder 6 is provided with a fixing bracket 7, and the upper end of the piston rod of the hydraulic cylinder 6 is provided with a positioning frame 8, and the cylinder body of the hydraulic cylinder 6 is provided with afixing shaft 9 at its upper left side. A rectangular frame 10 is rotatably connected to the fixing shaft 9. The rectangular frame 10 is provided with a slideway 11 and a cylinder 12 along the front and rear directions. The slideway 11 is slidably provided with a sliding plate 13, the rear side of the sliding plate 13 is provided with an anchor cable clamping and rotating mechanism 14, the cylinder 12 is located under the slideway 11, the rear end of the cylinder 12 is hinged to the lower part of the rear side of the rectangular frame 10, and the front end of the cylinder 12 is connected to the bottom of the sliding plate 13 through the connecting seat, the upper left side of the cylinder body of the hydraulic cylinder 6 is fixed with a vertical plate 15, the fixing shaft 9 vertically passes through the vertical plate 15, the vertical plate 15 is vertically arranged and parallel to the slideway 11, and the vertical plate 15 is provided with an arc-shaped guide hole 16 with a fixing shaft 9 as the center line. A positioning bolt 17 is fixed on the right side of the rectangular frame 10. The right end of the positioning bolt 17 passes through the arc-shaped guide hole 16 on the vertical plate 15 and is pressed fitting with the vertical plate 15 via the nut 18; the upper part of the rear side of the rectangular frame 10 is provided with an anchor cable rotation guide fixture 19 corresponding to the anchor cable clamping and rotating mechanism 14 both the front and rear; The vertical plate 15 is a semi-circular structure. The straight edge of the vertical plate 15 is vertically arranged and is fixedly connected with the cylinder body of the hydraulic cylinder 6. The arc-shaped guide hole 16 is located on the rear side of the hydraulic cylinder 6, an angle scale is provided along the length direction of the arc-shaped guide hole 16 on the front side of the front side vertical plate 15 and the rear side of the rear side vertical plate 15, and the 0 scale of the angle scale is located at the midpoint of the arc-shaped guide hole 16. The water jet generating device comprises a water bucket or a mortar mixing bucket 20, a water suction pipe 21, a water outlet pipe 22 and a high-pressure clean water pump or a mortar pump 23, and the inlet of water suction pipe 21 extends into the liquid level of water bucket or mortar mixing bucket 20, the outlet of the water suction pipe 21 is connected to the inlet of the high-pressure clean water pump or the mortar pump 23 , and the outlet of the high-pressure clean water pump or the mortar pump 23 is connected to the inlet of the water outlet pipe 22
. The high-pressure nozzle 38 comprises the nozzle body 24 and the connecting sleeve 25,
and the inner hole of the connecting sleeve 25 comprises the first inner threaded hole of the front
side and the second inner threaded hole of the rear side, and the aperture of the first inner threaded
hole is smaller than that of the second inner threaded hole. The front end of the hollow anchor
cable 1 extends into and is threaded into the second inner threaded hole, the outer circle of the
nozzle body 24 is provided with an outer thread, and the outer circle of the nozzle body 24
extends into and is threaded into the first inner threaded hole. The inner front side of the nozzle
body 24 is provided with two centrally symmetric injection holes 26, the center of the inner rear
side of the nozzle body 24 is provided with a water passage hole 27 corresponding to the central
hole of the hollow anchor cable 1, and the rear end of the two injection holes 26 is communicated
with the water passage hole 27 through a connecting hole 28 opened in the radial direction, and
an inner hexagonal groove 29 is opened in the middle of the front side of the nozzle body 24.
The inner hexagonal groove 29 is used to use a hexagonal wrench to drive the nozzle body 24 to
be screwed into or out of the first inner screw hole.
The anchoring agent feeding device comprises the anchoring agent A material storage
bucket 30, the anchoring agent B material storage bucket 31, the compressed air pipeline 32, the
first intake pipe 33, the second intake pipe 34, the first discharge pipe 35, the second discharge
pipe 36 and the material mixing and discharge pipe 37, the inlets of the first intake pipe 33 and
the second intake pipe 34 are connected with the outlet of the compressed air pipe 32, and the
outlet of the first intake pipe 33 is connected with the top of the anchoring agent A material
storage bucket 30, the outlet of the second intake pipe 34 is connected with the top of the
anchoring agent B material storage bucket 31, the inlet of the first discharge pipe 35 is connected
with the lower part of the anchoring agent A material storage bucket 30, and the inlet of the
second discharge pipe 36 is connected to the lower part of the anchoring agent B material storage
bucket 31, the outlet of the first discharge pipe 35 and the outlet of the second discharge pipe 36
are both connected to the inlet of the mixing and discharge pipe 37 at the same time, and the mixing and discharge pipe 37 is provided with a regulating valve 39, and both the anchoring agent A material storage bucket 30 and the anchoring agent B material storage bucket 31 are both cylindrical bucket structures.
In the step (3), the hollow anchor cable 1 is installed on the angle-adjustable drilling
mechanism, and specifically: the hollow anchor cable 1 is passed through the anchor cable
clamping and rotating mechanism 14 from the rear to the front and then passed through the
anchor cable rotation guide fixture19, and is simultaneously clamped by both the anchor cable
clamping and rotating mechanism 14 and the anchor cable rotation guide fixture 19. The anchor
cable clamping and rotating mechanism 14 uses a pneumatic or hydraulic motor to drive the
hollow anchor cable 1 to rotate via a gear transmission mechanism.
The process of step (4) is specifically as follows: first start the hydraulic cylinder 6, the
piston cylinder of the hydraulic cylinder 6 is stretched upward, and the positioning frame 8
presses the roadway roof, the position of the angle-adjustable drilling mechanism is fixed, and
then loosens the nut 18 on the front side and rear side positioning bolts 17, rotate the rectangular
frame 10, the rectangular frame 10 rotates with the fixing shaft 9 as the center line, the
positioning bolt 17 moves in the arc-shaped guide hole 16, and the drilling direction is
determined by the scale on the angle scale, then tighten the two nuts 18 to hold the rectangular
frame 10 in place.
The process of step (6) is specifically as follows: start a high-pressure clean water pump
or a mortar pump 23, an anchor cable clamping and rotating mechanism 14 and a cylinder 12,
and the high-pressure clean water pump or the mortar pump 23 extracts the clean water or
abrasive water in the water bucket or the mortar mixing bucket 20 through the hollow anchor
cable 1 and forwards it to the high-pressure nozzle 38, and sprays it forward through the two
injection holes 26 on the high-pressure nozzle 38, to form a water jet capable of breaking rocks.
The cylinder 12 pushes the sliding plate 13 and the anchor cable clamping and rotating
mechanism 14 to move forward along the slideway. The hollow anchor cable 1 rotates at a certain
speed while moving forward. The water jets sprayed forward from the two injection holes 26
carry out high-pressure hydraulic drilling on the coal rock wall 3, and the coal cuttings and rock
cuttings flow out from the orifices through the annular reduction between the borehole and the
hollow anchor cable 1, and when the extended stroke of the piston rod of the cylinder 12 reaches the maximum, the cylinder 12 stops extending, the anchor cable clamping and rotating mechanism 14 releases the hollow anchor cable 1, the anchor cable rotation guide clamp 19 clamps the hollow anchor cable 1, and the piston rod of the cylinder 12 retracts, to drive the sliding plate 13 and the anchor cable clamping and rotating mechanism 14 to move backward. When moving backward to the initial position, the anchor cable clamping and rotating mechanism 14 clamps the hollow anchor cable 1, and the anchor cable rotation guide fixture 19 releases the hollow anchor cable 1, and then the following actions are repeated: the cylinder 12 drives the sliding plate 13 to move forward, the anchor cable clamping and rotating mechanism 14 drives the hollow anchor cable 1 to rotate, and the high-pressure nozzle 38 at the front end of the hollow anchor cable 1 sprays high-pressure waterjets to perform hydraulic cutting operations on the coal rock wall 3. During the hydraulic cutting process, when the extended stroke of the piston rod of the cylinder 12 reaches the maximum, the piston rod of the cylinder 12 is retracted again, and the operation is repeated for several times until most of the hollow anchor cable 1 enters the borehole, and the high-pressure clean water pump or the mortar pump 23, the air cylinder 12 and the anchor cable clamping and rotating mechanism 14 are turned off when the hollow anchorage cable Ihas a length of 10-15cm left outside the borehole. The process of step (10) is specifically as follows: the compressed air pipeline 32 uses the high-compressed air under the coal mine, and the high-compressed air in the compressed air pipeline 32 passes through the first intake pipe 33 and the second intake pipe 34, respectively, to pressurize the anchoring agents in both the anchoring agent A storage bucket 30 and the anchoring agent B storage bucket 31, the anchoring agent A material enters the mixing and discharge pipe 37 through the first discharge pipe 35, and the anchoring agent B material enters the mixing and discharge pipe 37 through the second discharge pipe 36, the anchoring agent A material and the anchoring agent B material enter the high pressure nozzle 38 forward through the mixing and discharge pipe 37 and the hollow anchor cable 1, and are sprayed out through the two injection holes 26 on the high pressure nozzle 38, the outflowing anchoring agent flows outward at the bottom of the borehole along the annular gap between the outer wall of the hollow anchor cable 1 and the inner wall of the borehole. Anchoring agent A material and anchoring agent B material fill the annular gap. During the anchoring agent injection process, the anchor cable clamping and rotating mechanism 14 drives the rigid tube 4 and the hollow anchor cable 1 to rotate, so that the anchoring agent A material and the anchoring agent B material are mixed more uniformly in the borehole; the ratio of the section size of the anchoring agent A material storage bucket 30 to that of the anchoring agent B material storage bucket 31 is equal to the ratio of the amount of anchoring agent A material to that of the anchoring agent B material. Under the action of the same compressed air, the discharge flows of the anchoring agent A material and the anchoring agent B material are injected into the drill inside the hole according to their ratio.
The first high-pressure rotary sealing joint 2, the second high-pressure rotary sealing joint
, the anchor cable clamping and rotating mechanism 14, the anchor cable rotation guide fixture
19, the high-pressure clean water pump, the mortar pump, the cylinder 12, the hydraulic cylinder
in the present disclosure 6 are all existing mature technologies, which can be purchased in the
market, and the specific structure will not be repeated.
The reference to any prior art in this specification is not, and should not be taken as, an
acknowledgement or any form of suggestion that such prior art forms part of the common general
knowledge.
It will be understood that the terms "comprise" and "include" and any of their derivatives
(e.g. comprises, comprising, includes, including) as used in this specification, and the claims that
follow, is to be taken to be inclusive of features to which the term refers, and is not meant to
exclude the presence of any additional features unless otherwise stated or implied.
In some cases, a single embodiment may, for succinctness and/or to assist in understanding
the scope of the disclosure, combine multiple features. It is to be understood that in such a case,
these multiple features may be provided separately (in separate embodiments), or in any other
suitable combination. Alternatively, where separate features are described in separate
embodiments, these separate features may be combined into a single embodiment unless
otherwise stated or implied. This also applies to the claims which can be recombined in any
combination. That is a claim may be amended to include a feature defined in any other claim.
Further a phrase referring to "at least one of' a list of items refers to any combination of those
items, including single members. As an example, "at least one of: a, b, or c" is intended to
cover: a, b, c, a-b, a-c, b-c, and a-b-c.
It will be appreciated by those skilled in the art that the disclosure is not restricted in its
use to the particular application or applications described. Neither is the present disclosure restricted in its preferred embodiment with regard to the particular elements and/or features described or depicted herein. It will be appreciated that the disclosure is not limited to the embodiment or embodiments disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the scope as set forth and defined by the following claims.
Claims (8)
1. A self-drilling anchor cable and rapid anchoring construction method based on water jet technology, wherein the method comprises the following steps: (1) installing an angle-adjustable drilling mechanism at a rear end of a position designated for anchor cable support construction, and installing a water jet generating device and an anchoring agent feeding device at a rear end of the angle-adjustable drilling mechanism; (2) installing a high-pressure nozzle on a front end of the hollow anchor cable; (3) installing the hollow anchor cable on the angle-adjustable drilling mechanism; (4) adjusting the angle-adjustable drilling mechanism so that the hollow anchor cable faces a preset drilling direction, and then positioning the angle of the angle-adjustable drilling mechanism; (5) connecting the water outlet of the water outlet pipe of the water jet generating device with the rear end of the hollow anchor cable through a first high-pressure rotary sealing joint; (6) starting the water jet generating device and the angle-adjustable drilling mechanism to drill the coal or rock roof on the front side; (7) closing the water jet generating device and the angle-adjustable drilling mechanism, and disassembling the first high-pressure rotary sealing joint when the rear end of the hollow anchor cable is reserved with one section outside the hole of the borehole; (8) connecting the rear end of the hollow anchor cable with the previous rigid pipe in the same axial direction, and installing the rigid pipe on the angle-adjustable drilling mechanism; (9) connecting the outlet of the anchoring agent feeding device with the rear end of the rigid pipe by the second high-pressure rotary sealing joint; (10) starting the anchoring agent feeding device and the angle-adjustable drilling mechanism to perform the anchoring operation on the hollow anchor cable in the borehole; (11) closing the anchoring agent feeding device and the angle-adjustable drilling mechanism when the anchoring agent overflows from the orifice of the borehole; (12) after injecting a certain amount of anchoring agent and stirring and mixing it under the rotation of the hollow anchor cable, installing an anchor cable tray and rigging at the rear end of the hollow anchor cable, and pre-tightening the hollow anchor cable to complete the anchoring construction of the hollow anchor cable; wherein the angle-adjustable drilling mechanism comprises a vertically arranged hydraulic cylinder, and the lower end of the cylinder of the hydraulic cylinder is configured with a fixing bracket, a positioning frame is arranged on the upper end of the piston rod of the hydraulic cylinder, a fixing shaft is arranged horizontally at the upper left side of the cylinder of the hydraulic cylinder along the front and rear direction, and a rectangular frame is rotatably connected to the fixing shaft, the rectangular frame is provided with slideways and cylinders along the front to rear directions, sliding plates are arranged on the slideways, and the rear side of the sliding plate is provided with an anchor cable clamping and rotating mechanism, the cylinder is located under the slideways, the rear end of the cylinder is hinged to the lower part of the rear side of the rectangular frame, the front end of the cylinder is connected to the bottom of the sliding plate through a connecting seat, a vertical plate is fixed on the upper left side of the upper part of the hydraulic cylinder, the fixing shaft vertically passes through the vertical plate, and the vertical plate is vertically arranged and parallel to the slideways, the vertical plate is provided with an arc-shaped guide hole with the fixed axis as the center line, and a positioning bolt is arranged on the right side of the rectangular frame, and the right end of the positioning bolt passes through the arc shaped guide hole on the vertical plate and is press-fitted with the vertical plate via the nut; the upper part of the rear side of the rectangular frame is provided with an anchor cable rotation guide fixture corresponding to both the front and rear of the anchor cable clamping and rotating mechanism; the vertical plate is a semi-circular structure, the straight edge of the vertical plate is arranged vertically and is fixedly connected with the cylinder body of the hydraulic cylinder, the arc-shaped guide hole is located on the rear side of the hydraulic cylinder, and at the right side of the vertical plate along the length of the arc-shaped guide hole there is provided an angle scale, and the 0 scale of the angle scale is located at the midpoint of the arc-shaped guide hole.
2. The self-drilling anchor cable and rapid anchoring construction method based on water
jet technology of claim 1, wherein, water jet generating device comprises a water bucket or a
mortar mixing bucket, a water suction pipe, a water outlet pipe and a high-pressure clean water
pump or a mortar pump, the inlet of the water pumping extends under the liquid level of the
water bucket or the mortar mixing bucket, the outlet of the water suction pipe is connected with
the inlet of the high-pressure clean water pump or the mortar pump, and the outlet of the high- pressure clean water pump or the mortar pump is connected with the inlet of the water outlet pipe.
3. The self-drilling anchor cable and rapid anchoring construction method based on water jet technology of claim 1, where, the high-pressure nozzle comprises a nozzle body and a connecting sleeve, and the inner hole of the connecting sleeve comprises the first inner threaded hole on the front end and the second inner threaded hole on the rear side, the diameter of the first inner threaded hole is smaller than that of the second inner threaded hole, the front end of the hollow anchor cable extends into and is threaded into the second inner threaded hole, and the nozzle body is externally rounded with an external thread, the outer circle of the nozzle body extends into and is threaded into the first inner threaded hole, two centrally symmetrical injection holes are arranged on the front side of the nozzle body, and a water-passing hole corresponding to the hollow anchor cable is provided at the center of the rear side of the nozzle body, the rear ends of the two injection holes are connected with the water-passing hole through the radially arranged connecting holes, and the middle part of the front side of the nozzle body is provided with an inner hexagonal groove.
4. The self-drilling anchor cable and rapid anchoring construction method based on water jet technology of claim 1, wherein, the anchoring agent feeding device comprises an anchoring agent A material storage bucket, an anchoring agent B material storage bucket, a compressed air pipeline, a first intake pipe, a second intake pipe, a first discharge pipe, a second discharge pipe and a mixing and discharge pipe, both the inlets of the first intake pipe and the second intake pipe are connected with the outlet of the compressed air pipeline, the outlet of the first intake pipe is connected with the top of the anchoring agent A material storage bucket, the outlet of the second intake is connected with the top of the anchoring agent B material storage bucket, and the inlet of the first discharge pipe is connected with the lower part of the anchoring agent A material storage bucket, the inlet of the second discharge pipe is connected with the lower part of the anchoring agent B material storage bucket, the outlet of the first discharge pipe and the outlet of the second discharge pipe are connected with the inlet of the mixing and discharge pipe at the same time, and there is a regulating valve arranged on the mixing and discharge pipe, and both the anchoring agent A material storage bucket and the anchoring agent B material storage bucket are cylindrical bucket structures.
5. The self-drilling and rapid anchoring construction method of anchor cable based on water jet technology of claim 4, wherein, in step (3), the hollow anchor cable is installed on the angle-adjustable drilling mechanism, specifically, the hollow anchor cable passes through the angle-adjustable drilling mechanism from the rear to the front, and then passes through the anchor cable rotation guide clamp and is clamped by the anchor cable clamping and rotating mechanism and the anchor cable rotation guide clamp at the same time, the anchor cable clamping and rotating mechanism adopts pneumatic or the hydraulic motor to drive the hollow anchor cable to rotate via the gear transmission mechanism.
6. The self-drilling and rapid anchoring construction method of anchor cable based on water jet technology of claim 4, wherein, the specific process of step (4) is as follows: firstly start the hydraulic cylinder, and the piston cylinder of the hydraulic cylinder extends upwards, the positioning frame presses the roof of the roadway to fix the position of the angle-adjustable drilling mechanism, then loosens the nuts on the front and rear positioning bolts, and rotates the rectangular frame, the rectangular frame rotates with the fixed axis as the center line, the positioning bolt moves in the arc-shaped guide hole, the drilling direction is determined by the angular scale, and then the two nuts are tightened to position the rectangular frame.
7. The self-drilling anchor cable and rapid anchoring construction method based on water jet technology of claim 4, wherein the specific process of step (6) is specifically as follows: start the high-pressure clean water pump or the mortar pump, the anchor cable clamping and rotating mechanism and the cylinder, the high-pressure clean water pump or the mortar pump pumps out the clean water or abrasive water in the bucket or mortar mixing bucket and transports it forward to the high-pressure nozzle through the hollow anchor cable, and sprays it forward through the two injection holes on the high-pressure nozzle to form a water jet that can break the rock, the cylinder pushes the sliding plate and the anchor cable clamping and rotating mechanism to move forward along the slideway, the hollow anchor cable is rotating at a certain speed while moving forward, and the water jets ejected from the two injection holes carries out high-pressure hydraulic drilling on the coal rock wall, and coal and rock chips flows out from the orifice through the annular reduction between the borehole and the hollow anchor cable; when the stroke of the piston rod of the cylinder reaches the maximum, the cylinder stops extending, and the anchor cable clamping and rotating mechanism releases the hollow anchor cable, the anchor cable rotation guide clamp clamps the hollow anchor cable, the piston rod of the cylinder retracts, to drive sliding plate and the anchor cable clamping and rotating mechanism to move backwards; when moving back to the initial position, the anchor cable clamping and rotating mechanism clamps the hollow anchor cable, the anchor cable rotation guide clamp loosens the hollow anchor cable, and then repeats the actions that cylinder drives the sliding plate to move forward, the anchor cable clamping and rotating mechanism drives the hollow anchor cable to rotate, and the high-pressure nozzle at the front end of the hollow anchor cable ejects high-pressure water jets onto the coal rock wall for hydraulic cutting operation on the coal rock wall; when the stroke of the piston rod of the cylinder reaches the maximum, the piston rod of the cylinder is retracted again, and the operation is repeated for several times until most of the hollow anchor cable enters the borehole and the high-pressure clean water pump or mortar pump, the cylinder and the anchor cable clamping and rotating mechanism are turned off after the length of the hollow anchor cable left outside of the borehole is 10-15cm.
8. The self-drilling anchor cable and rapid anchoring construction method based on water
jet technology of claim 4, wherein, the specific process of step (10) is as follows: the compressed
air pipeline uses the high compressed air under the coal mine, and the high-compressed air in the
compressed air pipeline presses the anchoring agent in the anchoring agent A material storage
bucket and the anchoring agent B material storage bucket through the first intake pipe and the
second intake pipe respectively, and the anchoring agent A material enters the mixing and
discharge pipe through the first discharge pipe, the anchoring agent B material enters the mixing
and discharge pipe through the second discharge pipe, and the anchoring agent A material and
the anchoring agent B material enter the high-pressure nozzle forward through the mixing and
discharge pipe and the hollow anchor cable and then sprayed out via the two injection holes on
the high-pressure nozzle, the outflowing anchoring agent flows out at the bottom of the borehole
along the annular gap between the outer wall of the hollow anchor cable and the inner wall of
the borehole, the annular gap is filled with the anchoring agent A material and the anchoring
agent B material; during the injection of the anchoring agent, the anchor cable clamping and
rotating mechanism drives the rigid tube and the hollow anchor cable to rotate, so that the
anchoring agent A material and the anchoring agent B material can be mixed more uniformly in
the borehole; the ratio of the section size of the anchoring agent A material storage bucket to that of the anchoring agent B material storage bucket is equal to the composition ratio of the anchoring agent A material to the anchoring agent B material, and under the action of the same compressed air, the discharge flows of the anchoring agent A material and the anchoring agent B are injected into the borehole according to the set ratio.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010403657.8A CN111648803B (en) | 2020-05-13 | 2020-05-13 | Anchor cable self-drilling and rapid anchoring construction method based on water jet technology |
| CN202010403657.8 | 2020-05-13 | ||
| PCT/CN2021/092531 WO2021228004A1 (en) | 2020-05-13 | 2021-05-09 | Water jet technology-based anchor cable self-drilling and rapid anchoring construction method |
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| AU2021271378A1 AU2021271378A1 (en) | 2022-04-28 |
| AU2021271378B2 true AU2021271378B2 (en) | 2024-03-21 |
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| AU2021271378A Active AU2021271378B2 (en) | 2020-05-13 | 2021-05-09 | Water jet technology-based anchor cable self-drilling and rapid anchoring construction method |
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| Country | Link |
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| CN (1) | CN111648803B (en) |
| AU (1) | AU2021271378B2 (en) |
| WO (1) | WO2021228004A1 (en) |
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| CN111648803B (en) * | 2020-05-13 | 2022-04-05 | 河南理工大学 | Anchor cable self-drilling and rapid anchoring construction method based on water jet technology |
| CN112160737B (en) * | 2020-10-23 | 2023-03-10 | 河南理工大学 | Coal seam roof directional fracturing method based on hydraulic cutting technology |
| CN112664246B (en) * | 2020-12-19 | 2022-07-08 | 山东新升实业发展有限责任公司 | Rock anchor rod for advance support and construction method |
| CN112901078B (en) * | 2021-02-05 | 2022-02-01 | 南京工业大学 | High-pressure water jet drilling equipment for construction of anchor rod in mine and construction method thereof |
| CN113175340B (en) * | 2021-04-30 | 2023-06-20 | 中煤科工开采研究院有限公司 | Anchoring agent anchoring system |
| CN113027501A (en) * | 2021-05-07 | 2021-06-25 | 河南理工大学 | Self-drilling injection type anchor pipe anchoring device and method for coal mine |
| CN113202091B (en) * | 2021-05-20 | 2022-01-04 | 南京工业大学 | Self-drilling anti-floating anchor rod device and construction method |
| CN113530585B (en) * | 2021-08-13 | 2024-02-06 | 中国煤炭科工集团太原研究院有限公司 | Automatic drilling, anchor cable feeding and tensioning and fixedly connecting and cutting mechanism |
| CN114517701B (en) * | 2022-02-08 | 2024-07-23 | 中交二公局第三工程有限公司 | Tunnel steel arch centering lock foot anchor pipe angle control device |
| CN114837573B (en) * | 2022-07-06 | 2022-10-28 | 陕西中煤新能源有限公司 | Drill bit guiding and adjusting device and method |
| CN115258810B (en) * | 2022-07-20 | 2024-02-09 | 中煤科工集团西安研究院有限公司 | Reciprocating type tubular part conveying device for coal mine and control method |
| CN115653500B (en) * | 2022-12-29 | 2023-03-07 | 陕西晖煌建筑劳务有限公司 | Traffic engineering construction drilling equipment |
| CN117646603B (en) * | 2024-01-30 | 2024-05-03 | 陕西路桥集团有限公司 | Drill bit guiding adjusting device and method for rock stratum drilling |
| CN118148038B (en) * | 2024-05-09 | 2024-07-23 | 中国电建集团西北勘测设计研究院有限公司 | Anchor cable construction auxiliary device |
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| JPS62245000A (en) * | 1986-04-16 | 1987-10-26 | 株式会社大林組 | Method of reinforcing earth construction using jet bolt |
| CN202441403U (en) * | 2012-02-22 | 2012-09-19 | 吴昊 | High-pressure water self-drilling grouting anchor rod for mine |
| CN203080518U (en) * | 2012-12-21 | 2013-07-24 | 晏晓彤 | Self-drilling type recoverable anchor wire |
| CN103244058B (en) * | 2013-06-04 | 2015-06-17 | 重庆市能源投资集团科技有限责任公司 | Skid-mounted positioning drilling machine underground coal mine |
| CN104481560B (en) * | 2014-12-09 | 2017-08-22 | 中煤第一建设有限公司 | Back water-bearing layer administering method |
| CN104533486A (en) * | 2015-01-30 | 2015-04-22 | 安徽理工大学 | Bolting-grouting reinforcement method for remained roadway along goaf by use of self-drilling hollow grouting anchor cable |
| CN204476444U (en) * | 2015-01-30 | 2015-07-15 | 安徽理工大学 | A kind of self-drilling hollow grouting cable anchor |
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| CN107476814B (en) * | 2017-09-28 | 2023-08-25 | 滨州学院 | Integrated construction equipment and method for self-vibration jet grouting anchor rod |
| CN212389263U (en) * | 2020-05-13 | 2021-01-22 | 河南理工大学 | Anchor cable self-drilling device based on water jet technology |
| CN111648803B (en) * | 2020-05-13 | 2022-04-05 | 河南理工大学 | Anchor cable self-drilling and rapid anchoring construction method based on water jet technology |
| CN212389366U (en) * | 2020-05-13 | 2021-01-22 | 河南理工大学 | Anchor cable quick anchoring device for wind-conveying anchoring agent |
-
2020
- 2020-05-13 CN CN202010403657.8A patent/CN111648803B/en active Active
-
2021
- 2021-05-09 AU AU2021271378A patent/AU2021271378B2/en active Active
- 2021-05-09 WO PCT/CN2021/092531 patent/WO2021228004A1/en active Application Filing
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| WO2021228004A1 (en) | 2021-11-18 |
| CN111648803B (en) | 2022-04-05 |
| CN111648803A (en) | 2020-09-11 |
| AU2021271378A1 (en) | 2022-04-28 |
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