CN116641654A - Directional long drilling device and method for composite roof structure crushing belt - Google Patents
Directional long drilling device and method for composite roof structure crushing belt Download PDFInfo
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- CN116641654A CN116641654A CN202310743876.4A CN202310743876A CN116641654A CN 116641654 A CN116641654 A CN 116641654A CN 202310743876 A CN202310743876 A CN 202310743876A CN 116641654 A CN116641654 A CN 116641654A
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- 238000005553 drilling Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 58
- 239000002002 slurry Substances 0.000 claims abstract description 30
- 230000002787 reinforcement Effects 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 238000010276 construction Methods 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a directional long drilling device and a directional long drilling method for a composite roof structure breaking belt, wherein the directional long drilling device comprises a grouting sleeve, a reinforcing channel drilling device and a reinforcing channel filling device, the grouting sleeve is used for being sleeved outside a drill rod, and a grouting hole channel I for guiding slurry to flow is formed in the wall of the grouting sleeve; the reinforcing channel drilling device is arranged on a drill rod area close to one end of the drill rod, which is connected with the drill bit, and is used for drilling a reinforcing channel; the reinforcing channel filling device is arranged at the rear side of the reinforcing channel drilling device and is used for receiving the slurry flowing in the grouting channel I and guiding the slurry to fill the reinforcing channel.
Description
Technical Field
The invention relates to the technical field of coal mine construction, in particular to a device and a method for directional long drilling of a composite roof structure crushing belt.
Background
At present, fault fracture zones are often encountered in the directional long drilling construction process. In order to weaken the roof strength of a 20101 working face and ensure the stoping safety of the working face, a drilling site is arranged in a pedestrian channel of a 20101 working face adhesive tape roadway to construct directional long drilling holes for hydraulic fracturing, the drilling site is drilled for a certain distance in the directional drilling construction process, then a mud stratum, a fault fracture zone and the like are encountered, the hole collapse condition is easy to occur in the construction process, and in order to ensure the construction safety, quality and progress, a steel sleeve is generally adopted to reform the mud stratum, the fracture zone and the like. However, the existing directional long drilling device drills long holes and the working procedure of the steel sleeve is complicated, the efficiency is low, and a certain gap exists between the outside of the steel sleeve to be drilled and contact surfaces such as a mud layer or a fault fracture, so that uneven stress of the steel sleeve is caused, and in addition, due to the fact that the mud layer or the fault fracture zone has the characteristic of loose and unstable property, certain uneven compression effect is easily generated on a drill rod in the drilling process, the directional drilling direction of the drill rod is affected, and damage is easily caused to the drill rod.
Accordingly, one skilled in the art would be able to provide a composite roof construction breaker belt directional elongate drilling apparatus and method that addresses the problems set forth in the background above.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: a directional long drilling device for a composite roof structure crushing belt comprises a grouting sleeve, a reinforcing channel drilling device and a reinforcing channel filling device,
the grouting sleeve is used for being sleeved outside the drill rod, and a grouting duct I for guiding the flow of slurry is formed in the wall of the grouting sleeve;
the reinforcing channel drilling device is arranged on a drill rod area close to one end of the drill rod, which is connected with the drill bit, and is used for drilling a reinforcing channel;
the reinforcing channel filling device is arranged at the rear side of the reinforcing channel drilling device and is used for receiving the slurry flowing in the grouting channel I and guiding the slurry to fill the reinforcing channel.
Furthermore, the reinforcing channels are distributed along the drilling direction of the drill bit in an annular mode, and the steel sleeve is drilled into the drill bit along with the drill bit.
Further, the reinforced passage drilling device includes:
a ring sleeve seat fixedly sleeved outside the drill rod;
fixed ring plates fixedly sleeved at two ends of the ring sleeve seat;
the crushing assembly is circumferentially arranged between the fixed annular disks at two sides, wherein the crushing assembly comprises a rotating rod III arranged by the inner diameter side and a rotating rod I arranged by the outer diameter side, the two ends of the rotating rod III and the two ends of the rotating rod I are fixedly connected with the two sides of the fixed annular disks respectively, one end of a crushing cutter is hinged to the rotating rod I, a rotating rod II is arranged at the other end of the crushing cutter, one end of a telescopic device I is hinged to the rotating rod II, the other end of the telescopic device I is hinged to the rotating rod III, and the telescopic device I regulates and controls the crushing cutter to swing outwards/inwards.
Further, the reinforcement channel filling apparatus includes:
the connecting ring is fixedly sleeved outside the drill rod, a through hole I communicated with the grouting duct I is formed in the annular surface on one side of the connecting ring, an annular opening is formed in the annular surface on the other side of the connecting ring, a supporting ring disk I is fixedly sleeved outside the connecting ring, and a slurry plugging assembly for plugging the reinforcing channel is arranged on the supporting ring disk I;
an adapter ring sleeve which is sleeved outside the drill rod in a rotating way and is tightly arranged with an annular opening in the communication ring, wherein a grouting pore canal II communicated with the annular opening is formed in the adapter ring sleeve;
and the communicating pipe is fixed on the adapter sleeve, communicated with the grouting pore canal II and used for guiding slurry into the reinforcing channel.
Further, the slurry plugging assembly comprises:
the support ring sleeve is arranged at the other end of the switching ring sleeve and fixedly sleeved outside the drill rod;
the first supporting ring disc and the second supporting ring sleeve are respectively fixedly provided with a second telescopic device which is arranged in the same radial direction;
a toothed ring is respectively rotatably arranged on the first support ring disk and the support ring sleeve, the toothed ring is fixedly sleeved on the switching ring sleeve, and the second support ring disk is fixedly sleeved on the toothed ring;
the second supporting ring discs on the two sides are respectively fixedly provided with a third telescopic device which is arranged in the same radial direction;
an elastic rolling ring piece is sleeved on the outer side between the first supporting ring disc and the supporting ring sleeve, the outer piece ends of the elastic rolling ring piece are respectively hinged to the output end of the second telescopic device, and the inner piece ends of the elastic rolling ring piece are respectively hinged to the output end of the third telescopic device; the inner side coil piece of the elastic coil piece is provided with a second through hole which is communicated and fixed with the outer pipe orifice of the communicating pipe;
the first support ring disc and the first support ring sleeve are respectively rotatably provided with gears meshed with the toothed ring, and one gear is fixedly connected to a motor output shaft arranged on the first support ring sleeve.
Further, the pipe diameter of the steel sleeve is respectively larger than the maximum outer diameters of the reinforcing channel drilling device and the reinforcing channel filling device.
A directional long drilling method for a composite roof structure crushing belt comprises the following steps:
s1: synchronously putting a steel sleeve into the drill rod and the drill bit in the process of directional drilling of long drilling holes;
s2: determining the texture structure and the position of the broken belt region, selecting the position form of the reinforcing channel to be opened, and correspondingly setting a marking region;
s3: when the reinforced channel drilling device reaches the marking area, starting the telescopic device to push the crushing cutter to swing outwards for expansion, and completing the opening of the reinforced channel under the drive of the drill rod;
s4: when the reinforced channel filling device reaches the reinforced channel which is completed, the motor drives the gear ring to rotate, and simultaneously the second telescopic device and the third telescopic device are matched to stretch, so that the elastic coiled ring piece is uncoiled and expands outwards, an opening in the reinforced channel is plugged, then the grouting liquid continuously pressurized and injected into the first grouting channel sequentially flows through the first through hole, the annular opening, the second grouting channel and the communicating pipe, and flows into the reinforced channel to be solidified, and after solidification, the reinforced channel filling device resets.
Further, in S2, the position of the reinforcement channel is in a form of an annular reinforcement channel.
Further, in the step S2, the position of the reinforcement channel is an annular stepped reinforcement channel.
Further, in S2, the position of the reinforcement channel is continuous/discontinuous.
Compared with the prior art, the invention provides the directional long drilling device and the directional long drilling method for the crushing belt with the composite top plate structure, which have the following beneficial effects:
according to the invention, the steel sleeve is driven into the drill hole while the drill bit is used for directional drilling, the steel sleeve is leaned against the drill bit region side, and the steel sleeve is used as a support body of the drill rod, so that the stress effect of a soft unstable structural layer in a broken zone region or a mudstone layer region on a drill rod body in the drill rod drilling process can be avoided, the drill rod is protected, the stability and the accuracy of the drill rod drilling direction are ensured, the drill rod drilling safety is improved, the drill rod, the drill bit, the reinforcing channel drilling device and the reinforcing channel filling device are conveniently retracted, the directional drilling and the steel sleeve are driven more efficiently, and the construction period is greatly shortened; in addition, for the soft unstable structural layer in the broken zone area or the mudstone layer area, a reinforcing channel with caliber surrounding the drilling hole is further formed in the drilling direction of the drill bit, slurry is injected into the reinforcing channel in a certain pressurizing mode, so that the slurry is filled into the reinforcing channel, and the slurry can be diffused and filled into gaps, cracks and the like in the area layer along the reinforcing channel to the outer side of the area layer, so that the curing strength of the area layer is further improved and enhanced; and the position form of the corresponding reinforcing channel can be preselected according to the texture structure and the position of the measured breaking belt region, so that the working efficiency and the drilling precision of the directional long drilling hole are further improved under the condition of ensuring the safety degree.
Drawings
FIG. 1 is a schematic view of a directional long drilling device according to the present invention;
FIG. 2 is a schematic illustration of a slurry plugging assembly according to the present invention;
FIG. 3 is a schematic view of a communication ring structure according to the present invention;
FIG. 4 is a schematic view of an elastic rolled ring sheet according to the present invention;
FIG. 5 is a schematic view of a reinforced passage drilling device according to the present invention;
FIG. 6 is a schematic illustration of a reinforced channel drilling embodiment of the present invention;
FIG. 7 is a schematic diagram of a second embodiment of the reinforced passage drill of the present invention;
FIG. 8 is a schematic representation of a reinforced channel drilling embodiment of the present invention;
in the figure: 1. a steel sleeve; 2. a drill rod; 3. a drill bit; 4. grouting sleeve; 5. a reinforced passage drilling device; 6. reinforcing the channel filling device; 41. grouting a first pore canal; 51. a ring sleeve seat; 52. a fixed ring disk; 53. crushing a cutter; 54. a first expansion device; 55. a first rotating rod; 56. a second rotating rod; 57. a third rotating rod; 61. a communication ring; 62. a first support ring disk; 63. a grout plugging assembly; 64. a transfer ring sleeve; 65. a communicating pipe; 611. a first through hole; 612. a ring opening; 631. a support ring sleeve; 632. a second expansion device; 633. a toothed ring; 634. a second supporting ring disk; 635. a third expansion device; 636. an elastic ring rolling sheet; 637. a gear; 638. a motor; 6361. a second through hole; 641. grouting a second pore canal.
Detailed Description
Referring to fig. 1-5, the present invention provides a technical solution: a directional long drilling device for a composite roof structure breaking belt comprises a grouting sleeve 4, a reinforcing channel drilling device 5 and a reinforcing channel filling device 6,
the grouting sleeve 4 is used for being sleeved outside the drill rod 2, and a grouting duct I41 for guiding the flow of the slurry is formed in the wall of the grouting sleeve 4;
the reinforced channel drilling device 5 is arranged on the area of the drill rod 2 close to the drill bit 3 connected with one end and is used for drilling a reinforced channel;
the reinforcement channel filling device 6 is provided at the rear side of the reinforcement channel drilling device 5 and serves to receive the slurry flowing in the grouting channel one 41 and to fill the reinforcement channel with the slurry.
In this embodiment, the reinforcement channels are distributed along the drilling direction of the drill bit 3 in an annular shape, and the steel casing 1 is drilled into the drill bit 3 along with the drilling of the drill bit.
In this embodiment, the pipe diameter of the steel sleeve 1 is respectively larger than the maximum outer diameters of the reinforced passage drilling device 5 and the reinforced passage filling device 6; that is, in the process of directional long drilling of the crushing belt, the structural design can enable the steel sleeve to be put into the drill hole while the drill bit is used for directional long drilling, the steel sleeve is leaned against the drill bit region side, and the steel sleeve is used as a support body of the drill rod, so that the stress effect of a soft unstable structural layer of the crushing belt region or the mudstone region on the drill rod body in the drill rod drilling process can be avoided, the drill rod is protected, the stability and the accuracy of the drill rod drilling direction are ensured, the drill rod drilling safety is improved, the drill rod, the drill bit, the reinforcing channel drilling device and the reinforcing channel filling device are conveniently retracted, the directional long drilling and the steel sleeve are put into more efficiently, and the construction period is greatly shortened; in addition, for the soft unstable structure layer in the broken belt area or the mudstone layer area, a reinforcing passage with a caliber surrounding the drilled hole is further formed in the drilling direction of the drill bit, slurry is injected into the reinforcing passage in a certain pressurizing mode, so that the slurry is filled into the reinforcing passage, and the slurry can be diffused and filled into gaps, cracks and the like in the area layer along the reinforcing passage to the outer side of the area layer, so that the curing strength of the area layer is further improved and enhanced.
In this embodiment, the reinforcement channel drilling device 5 includes:
a ring sleeve seat 51 fixedly sleeved outside the drill rod 2;
fixed ring plates 52 fixedly sleeved at two ends of the ring sleeve seat 51;
the crushing assembly is circumferentially arranged between the fixed annular disks 52 at two sides, wherein the crushing assembly comprises a third rotating rod 57 arranged at the inner diameter side and a first rotating rod 55 arranged at the outer diameter side, two ends of the third rotating rod 57 and two ends of the first rotating rod 55 are respectively fixedly connected with the fixed annular disks 52 at two sides, one end of a crushing cutter 53 is hinged to the first rotating rod 55, a second rotating rod 56 is arranged at the other end of the crushing cutter 53, one end of a first telescopic device 54 is hinged to the second rotating rod 56, the other end of the first telescopic device 54 is hinged to the third rotating rod 57, and the crushing cutter is controlled to swing outwards/inwards by the first telescopic device 54;
that is, through the regulation and control of the expansion bend one, can make smashing the cutter outwards/interior swing to regulate and control the preparation size of strengthening the passageway, it should be explained that smashing the rotation of cutter and being driven by the drilling rod, when the reinforcement passageway demand of the different axial length of preparation needs, need to drive smashing the cutter axial displacement and prepare the strengthening passageway through regulating and controlling drilling/the rollback of drilling rod, this mode setting still is favorable to making the piece that bores more smash.
In this embodiment, the reinforcement channel filling apparatus 6 includes:
a first through hole 611 communicated with the first grouting duct 41 is formed in the annular surface on one side of the first through ring 61, an annular opening 612 is formed in the annular surface on the other side of the first through ring 61, a first supporting ring plate 62 is fixedly sleeved outside the first through ring 61, and a slurry plugging assembly 63 for plugging a reinforced channel is mounted on the first supporting ring plate 62;
an adapter ring sleeve 64 which is sleeved outside the drill rod 2 and is tightly arranged with an annular opening 612 in the communication ring 61 is rotated, and a grouting duct II 641 communicated with the annular opening 612 is arranged in the adapter ring sleeve 64;
a communicating pipe 65 fixed on the adapter sleeve 64 and communicating with the grouting duct two 641 for introducing slurry into the reinforcing passage;
the grout plugging assembly 63 comprises:
a support ring sleeve 631 arranged at the other end of the adapter ring sleeve 64 and fixedly sleeved outside the drill rod 2;
the first supporting ring disk 62 and the second supporting ring sleeve 631 are respectively fixedly provided with a second expansion device 632 which is arranged in the same radial direction;
a toothed ring 633 is rotatably mounted on the first support ring disc 62 and the first support ring sleeve 631, the toothed ring 633 is fixedly sleeved on the adapter ring sleeve 64, and a second support ring disc 634 is fixedly sleeved on the toothed ring 633;
the second supporting ring plate 634 on two sides is fixedly provided with a third expansion device 635 which is arranged in the same radial direction;
an elastic rolling ring sheet 636 sleeved outside between the first support ring disc 62 and the first support ring sleeve 631, wherein the outer sheet ends of the elastic rolling ring sheet 636 are respectively hinged on the output ends of the second retractors 632, and the inner sheet ends of the elastic rolling ring sheet 636 are respectively hinged on the output ends of the third retractors 635; the inner side coil piece of the elastic coil piece 636 is provided with a second through hole 6361, and the second through hole 6361 is communicated and fixed with the outer pipe opening of the communicating pipe 65;
gears 637 which are respectively rotatably arranged on the first support ring disk 62 and the second support ring sleeve 631 and meshed with the toothed ring 633, and one gear 637 is fixedly connected to an output shaft of a motor 638 arranged on the second support ring sleeve 631;
the motor drives the elastic rolling ring piece to unwind, and the elastic rolling ring piece is matched with the expansion of the expansion device II and the expansion device III, so that the inner opening of the reinforcing channel manufactured by the crushing cutter can be plugged, and the axial length of the reinforcing channel needs to be smaller than that of the elastic rolling ring piece when slurry is injected into the reinforcing channel;
in connection with the embodiment shown in fig. 6-8, the method comprises the following steps:
s1: synchronously putting a steel sleeve into the drill rod and the drill bit in the process of directional drilling of long drilling holes;
s2: determining the texture structure and the position of the broken belt region, selecting the position form of the reinforcing channel to be opened, and correspondingly setting a marking region;
s3: when the reinforced channel drilling device reaches the marking area, starting the telescopic device to push the crushing cutter to swing outwards for expansion, and completing the opening of the reinforced channel under the drive of the drill rod;
s4: when the reinforced channel filling device reaches the reinforced channel which is completed, the motor drives the gear ring to rotate, and simultaneously the second telescopic device and the third telescopic device are matched to stretch, so that the elastic coiled ring piece is uncoiled and expands outwards, an opening in the reinforced channel is plugged, then the grouting liquid continuously pressurized and injected into the first grouting channel sequentially flows through the first through hole, the annular opening, the second grouting channel and the communicating pipe, and flows into the reinforced channel to be solidified, and after solidification, the reinforced channel filling device resets.
Referring to fig. 6, embodiment 1: in the step S2, the position form of the reinforcement channel is an annular reinforcement channel.
Referring to fig. 7, a second embodiment: in the step S2, the position form of the reinforcement channel is an annular stepped reinforcement channel.
Referring to fig. 8, embodiment three: in the step S2, the position form of the reinforcing channel is continuous/discontinuous; among these, the following should be noted for the preparation of the continuous reinforcement channel: the preparation method adopts a discontinuous reinforcement channel preparation mode, after the solidification treatment of the slurry filled by the reinforcement channel filling device, the reinforcement channel is carried out again in the area which is provided for the treatment between the discontinuous reinforcement channels, and the solidification treatment of the slurry filled by the reinforcement channel filling device is carried out again, so that the continuous reinforcement body is formed.
In this embodiment, the position form of the corresponding reinforcing channel is selected in advance according to the texture structure and the position of the region of the measuring breaker belt, so that the working efficiency is further improved while the safety degree is ensured.
In the embodiment, the first telescopic device is matched in the process of directional drilling of the drill bit, so that the smashing cutter swings outwards, the maximum outer diameter of the smashing cutter is relatively consistent with the maximum outer diameter of the steel sleeve or the rate of the smashing cutter is larger than the maximum outer diameter of the steel sleeve, the drill bit is used as a main drill hole for directional drilling, the smashing cutter is used for finishing the wall of the drill hole, the wall of the drill hole is smoother, and the smashing cutter is in contact with the steel sleeve uniformly and tightly.
The above description is only of the preferred embodiments of the invention, but the protection scope of the invention is not limited thereto, and any person skilled in the art who is skilled in the art to which the invention pertains should make equivalent substitutions or modifications according to the technical solution of the invention and its inventive concept within the scope of the invention.
Claims (10)
1. The directional long drilling device for the composite roof structure breaking belt comprises a grouting sleeve (4), a reinforcing channel drilling device (5) and a reinforcing channel filling device (6), and is characterized in that,
the grouting sleeve (4) is used for being sleeved outside the drill rod (2), and a grouting hole channel I (41) for guiding the flow of the slurry is formed in the pipe wall of the grouting sleeve (4);
the reinforcing channel drilling device (5) is arranged on a region of the drill rod (2) close to the drill bit (3) connected with one end and is used for drilling a reinforcing channel;
the reinforcing channel filling device (6) is arranged at the rear side of the reinforcing channel drilling device (5) and is used for receiving the slurry flowing in the grouting channel I (41) and guiding the slurry to fill the reinforcing channel.
2. The composite roof structured crushing belt directional long drilling device according to claim 1, wherein the reinforcing channels are distributed along the drilling direction of the drill bit (3), and the steel sleeve (1) is drilled into the drill bit (3).
3. A composite roof construction breaker strip directional elongate drilling apparatus as claimed in claim 1 wherein said reinforced passage drilling apparatus (5) comprises:
a ring sleeve seat (51) fixedly sleeved outside the drill rod (2);
fixed ring discs (52) fixedly sleeved at two ends of the ring sleeve seat (51);
the crushing assembly is circumferentially arranged between the fixed annular disks (52) on two sides, wherein the crushing assembly comprises a rotating rod III (57) arranged on the inner diameter side and a rotating rod I (55) arranged on the outer diameter side, two ends of the rotating rod III (57) and two ends of the rotating rod I (55) are fixedly connected with the two sides of the fixed annular disks (52) respectively, one end of a crushing cutter (53) is hinged to the rotating rod I (55), a rotating rod II (56) is arranged at the other end of the crushing cutter (53), one end of a telescopic device I (54) is hinged to the rotating rod II (56), and the other end of the telescopic device I (54) is hinged to the rotating rod III (57) and is used for regulating and controlling the crushing cutter to swing outwards/inwards.
4. A composite roof construction breaker strip directional elongate drilling apparatus as claimed in claim 1 wherein said reinforcing passage filling means (6) comprises:
a first through hole (611) communicated with the first grouting duct (41) is formed in the annular surface on one side of the communication ring (61), an annular opening (612) is formed in the annular surface on the other side of the communication ring (61), a first supporting ring disc (62) is fixedly sleeved outside the communication ring (61), and a slurry plugging component (63) for plugging the reinforced channel is mounted on the first supporting ring disc (62);
an adapter ring sleeve (64) which is sleeved outside the drill rod (2) in a rotating way and is tightly arranged with an annular opening (612) in the communication ring (61), and a grouting pore canal II (641) communicated with the annular opening (612) is formed in the adapter ring sleeve (64);
and a communicating pipe (65) fixed on the adapter sleeve (64) and communicated with the grouting duct II (641) for introducing slurry into the reinforcing channel.
5. The composite roof construction breaker strip directional elongate drilling apparatus of claim 4 wherein said slurry plugging assembly (63) comprises:
the support ring sleeve (631) is arranged at the other end of the switching ring sleeve (64) and fixedly sleeved outside the drill rod (2);
the first supporting ring disc (62) and the second supporting ring sleeve (631) are respectively fixedly provided with a second telescopic device (632) which is arranged in the same radial direction;
a toothed ring (633) is rotatably arranged on the first supporting ring disk (62) and the supporting ring sleeve (631) respectively, the toothed ring (633) is fixedly sleeved on the switching ring sleeve (64), and a second supporting ring disk (634) is fixedly sleeved on the toothed ring (633);
the supporting ring discs II (634) on the two sides are respectively fixedly provided with a telescopic device III (635) which is arranged in the same radial direction;
an elastic rolling ring sheet (636) sleeved outside between the first supporting ring disc (62) and the supporting ring sleeve (631), wherein the outer sheet ends of the elastic rolling ring sheet (636) are respectively hinged on the output end of the second telescopic device (632), and the inner sheet ends of the elastic rolling ring sheet (636) are respectively hinged on the output end of the third telescopic device (635); the inner side coil piece of the elastic coil piece (636) is provided with a through hole II (6361), and the through hole II (6361) is communicated and fixed with the outer pipe opening of the communicating pipe (65);
gears (637) meshed with the toothed ring (633) are rotatably arranged on the first support ring disc (62) and the support ring sleeve (631) respectively, and one gear (637) is fixedly connected to an output shaft of a motor (638) arranged on the support ring sleeve (631).
6. A composite roof construction breaker strip directional long drilling apparatus according to claim 2, characterized in that the diameter of the steel sleeve (1) is larger than the maximum outer diameter of the reinforcing channel drilling apparatus (5) and the reinforcing channel filling apparatus (6), respectively.
7. The method for directional long drilling of the composite roof structure crushing belt is characterized by comprising the following steps of:
s1: synchronously putting a steel sleeve into the drill rod and the drill bit in the process of directional drilling of long drilling holes;
s2: determining the texture structure and the position of the broken belt region, selecting the position form of the reinforcing channel to be opened, and correspondingly setting a marking region;
s3: when the reinforced channel drilling device reaches the marking area, starting the telescopic device to push the crushing cutter to swing outwards for expansion, and completing the opening of the reinforced channel under the drive of the drill rod;
s4: when the reinforced channel filling device reaches the reinforced channel which is completed, the motor drives the gear ring to rotate, and simultaneously the second telescopic device and the third telescopic device are matched to stretch, so that the elastic coiled ring piece is uncoiled and expands outwards, an opening in the reinforced channel is plugged, then the grouting liquid continuously pressurized and injected into the first grouting channel sequentially flows through the first through hole, the annular opening, the second grouting channel and the communicating pipe, and flows into the reinforced channel to be solidified, and after solidification, the reinforced channel filling device resets.
8. The method for directional drilling of a composite roof construction breaker belt according to claim 7, wherein in S2, the location of the reinforcement channel is in the form of an annular reinforcement channel.
9. The method for directional drilling of a composite roof construction breaker belt according to claim 7, wherein in S2, the reinforcing channels are in the form of annular stepped reinforcing channels.
10. The method of directional long drilling of a composite roof construction breaker belt of claim 7, wherein in S2, the location of the reinforcement channel is continuous/discontinuous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310743876.4A CN116641654A (en) | 2023-06-24 | 2023-06-24 | Directional long drilling device and method for composite roof structure crushing belt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310743876.4A CN116641654A (en) | 2023-06-24 | 2023-06-24 | Directional long drilling device and method for composite roof structure crushing belt |
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| CN116641654A true CN116641654A (en) | 2023-08-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952475A (en) * | 2016-05-16 | 2016-09-21 | 河南理工大学 | Coal mine residual mining zone falling waste roadway grouting reinforcing technology and method |
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