CN112761572A - Air bag positioning and hole sealing device for sealing inclined large-diameter drill hole of coal mine - Google Patents
Air bag positioning and hole sealing device for sealing inclined large-diameter drill hole of coal mine Download PDFInfo
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- CN112761572A CN112761572A CN202011598511.XA CN202011598511A CN112761572A CN 112761572 A CN112761572 A CN 112761572A CN 202011598511 A CN202011598511 A CN 202011598511A CN 112761572 A CN112761572 A CN 112761572A
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- diameter drill
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- 238000007789 sealing Methods 0.000 title claims abstract description 93
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000005422 blasting Methods 0.000 claims abstract description 6
- 238000004880 explosion Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 43
- 239000007924 injection Substances 0.000 claims description 43
- 238000009434 installation Methods 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007569 slipcasting Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000000605 extraction Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000011440 grout Substances 0.000 description 7
- 238000005065 mining Methods 0.000 description 4
- 238000004939 coking Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
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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
- 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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- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
Abstract
The air bag positioning and hole sealing device for sealing the inclined large-diameter drill hole of the coal mine comprises a hole sealing assembly, a single bag and a grouting pipe which are all arranged in the inclined large-diameter drill hole, wherein the outlet end of the grouting pipe is connected with the single bag, an explosion valve is arranged on the grouting pipe, and the inlet end of the grouting pipe is provided with a grouting valve positioned outside the orifice of the inclined large-diameter drill hole; the hole sealing assembly comprises an inflatable inflation hole sealing part and a hand-driven lead screw transmission connecting rod telescopic positioning part which are connected with each other, the grouting pipe penetrates through the inflatable inflation hole sealing part, and the blasting valve is positioned between the single-bag and the inflatable inflation hole sealing part. The hole sealing assembly is simple in structure, convenient to operate and high in automation degree, the hole sealing assembly is firmly fixed in the inclined large-diameter drill hole and can be used for quickly closing the drill hole to perform grouting operation, the positioning effect is good, the stability of the bag during grouting is ensured, the problem that grouting materials, gangue and accumulated water easily enter a roadway can be solved after grouting is completed, the practicability is high, and the hole sealing assembly has important popularization value.
Description
Technical Field
The invention belongs to the technical field of coal mine gas extraction drilling and hole sealing, and particularly relates to an air bag positioning and hole sealing device for sealing an inclined large-diameter drill hole of a coal mine.
Background
The inclined large-diameter drill hole is a new goaf gas extraction technology developed in recent years, as shown in fig. 1 and fig. 2, an air inlet lane 49 and an air return lane 51 are respectively arranged on two sides of a coal face 50, namely, a gas control lane 52 is arranged beside the air return lane 51 at the coal face 50, an inclined large-diameter drill hole 53 is drilled from the gas control lane 52 to the air return lane 51, the inclined large-diameter drill hole 53 replaces a connecting lane of the air return lane 51 to extract upper corner gas, 54 in fig. 2 is a goaf, 55 is a coal pillar, 56 is a coal seam, and 57 is a gas extraction pipeline.
In recent years, inclined large-diameter drill holes are applied to a certain degree for extracting gas in a goaf. The literature: the technology for treating upper corner gas in ultra-large diameter drilling holes by replacing the lane with holes (Jiang Lian, Yangbang, Shanxi coking coal technology, 2019: 47-49), the feasibility research of gas extraction technology in small Zhuang mine by replacing the lane with holes (Guo Lin, Lin build, Like, and the like, Chinese coal, 2020, 46(9): 65-70), the research of the technology for treating upper corner gas in ultra-large diameter drilling holes (Wang Kangwang, mining industry safety and environmental protection, 2020, 47 (2): 90-93), the application of the technology for treating upper corner gas in large diameter drilling holes on comprehensive mining working faces (Shiruing, Gao, Lihao, Shanxi coking coal technology, 2018: 31-34), the research of the gas extraction technology in ultra-large diameter drilling hole mining area (Gaowang, Yang Wei, scientific technology, 2019, 47 (2): 77-81), and the application research of the large diameter gas extraction technology in Wanan coal mining area (Wan Lian coal and chemical industry, 2019.42(5): 100-103) etc. describe the use of inclined large diameter boreholes in coal mines.
The sealing of the inclined large-diameter drill hole is different from the sealing purpose of a common drill hole, and the sealing purpose of the common drill hole is to prevent air from entering the drill hole and improve the gas extraction concentration and effect; after the gas extraction pipeline 57 is dismantled, the inclined large-diameter drill hole needs to be sealed, and the purpose is to prevent waste rock and accumulated water in the goaf from entering a roadway through the inclined large-diameter drill hole in order to plug the large-diameter drill hole.
The inclined large-diameter drill hole has a certain inclination angle and needs more hole sealing materials. In the sealing process, the sealing grouting material is easy to slide out along the inclined large-diameter drill hole. How to quickly and efficiently seal the inclined large-diameter drill hole becomes the key for popularizing the technology of extracting gas in the goaf by the inclined large-diameter drill hole.
Disclosure of Invention
The invention provides an air bag positioning and hole sealing device for sealing an inclined large-diameter drill hole of a coal mine, aiming at solving the problem that a grouting material is easy to slide out along the inclined large-diameter drill hole in the sealing process of the inclined large-diameter drill hole, and the air bag positioning and hole sealing device can quickly seal the inclined large-diameter drill hole and prevent waste rocks and accumulated water in a goaf from entering a roadway through the inclined large-diameter drill hole.
In order to solve the technical problems, the invention adopts the following technical scheme: the air bag positioning and hole sealing device comprises a hole sealing assembly, a single bag and a grouting pipe which are all arranged in the inclined large-diameter drill hole, wherein the outlet end of the grouting pipe is connected with the single bag, the grouting pipe is provided with an explosion valve, and the inlet end of the grouting pipe is provided with a grouting valve positioned outside the orifice of the inclined large-diameter drill hole;
the hole sealing assembly comprises an inflatable expansion hole sealing part and a hand-driven screw rod transmission connecting rod telescopic positioning part which are connected with each other, the inflatable expansion hole sealing part is positioned on the left side of the hand-driven screw rod transmission connecting rod telescopic positioning part in the inclined large-diameter drill hole, the grouting pipe penetrates through the inflatable expansion hole sealing part, and the blasting valve is positioned between the single-bag and the inflatable expansion hole sealing part;
the telescopic positioning part of the hand-driven lead screw transmission connecting rod comprises a lead screw and a connecting rod assembly, the left end of the lead screw is rotatably connected to the inflatable expansion sealing hole part, a left half section and a right half section of the lead screw are respectively provided with a forward thread and a reverse thread, the middle part of the left side of the connecting rod assembly is in threaded connection with the left half section of the lead screw, the middle part of the right side of the connecting rod assembly is in threaded connection with the right half section of the lead screw, the right end of the lead screw is provided with a handle rod for driving the lead screw to rotate.
The inflation hole sealing part comprises a disc and an outer annular air bag, a threaded hole is formed in the center of the disc, an outer annular groove is formed in the excircle of the disc along the circumferential direction, the outer annular air bag is installed in the outer annular groove, a grouting perforation parallel to the threaded hole is formed in the eccentric position of the disc, a grouting pipe is arranged in the grouting perforation in a penetrating mode, an inner annular groove is formed in the inner circle of the grouting perforation, and an inner annular air bag sleeved on the grouting pipe is arranged in the inner annular groove.
The air inlet of interior annular gasbag is connected through a three-way pipe with outer annular gasbag's air inlet, the third interface connection of three-way pipe the gas injection pipe, be equipped with the outer gas injection valve that closes on outer annular gasbag air inlet on the three-way pipe, be equipped with the interior gas injection valve that closes on inner annular gasbag air inlet on the three-way pipe, be equipped with outer manometer between outer gas injection valve and outer annular gasbag air inlet on the three-way pipe, manometer in being equipped with between interior gas injection valve and inner annular gasbag air inlet on the three-way pipe, exhaust valve in being equipped with on the inner annular gasbag, outer exhaust valve is equipped with on the outer.
A bearing seat is fixedly arranged at the center of the disc, a stud in threaded connection with the threaded hole is arranged at the left end of the bearing seat, the left end of the screw rod is rotatably connected in the bearing seat through a bearing, and the central line of the screw rod is superposed with the central line of the disc;
the connecting rod component comprises a left nut, a right nut and three groups of V-shaped rod pieces, the left nut is in threaded connection with the left half section of the screw rod, the right nut is in threaded connection with the right half section of the screw rod, the three groups of V-shaped rod pieces are uniformly arranged along the circumferential direction of the screw rod, each group of V-shaped rod pieces comprises a left connecting rod, a right connecting rod, an installation block and a positioning needle, the inner end of the left connecting rod is rotatably connected with the left nut, the inner end of the right connecting rod is rotatably connected with the right nut, the screw rod is positioned on the plane where the left connecting rod and the right connecting rod of the same group are positioned, an installation groove is formed in the inner side of the installation block, the outer end of the left connecting rod is fixedly connected with a left gear positioned on the left side in the installation groove, the outer end of the right connecting rod is fixedly connected with a right gear positioned on the right side in the installation, the inner end of the screw rod is fixedly connected to the outer side surface of the mounting block.
The locking device comprises an outer hexagonal sleeve and four arc-shaped locking sheets, wherein four sections of eccentric curved surfaces are uniformly arranged on the inner ring of the outer hexagonal sleeve along the circumferential direction, the distance between an eccentric curve formed by the cross section of each section of eccentric curved surface and the central line of the outer hexagonal sleeve is gradually reduced along the counterclockwise direction, the two sections of eccentric curves are connected end to end and have steps at the connecting part, the four arc-shaped locking sheets are respectively arranged on the inner wall of the outer hexagonal sleeve where the four sections of eccentric curved surfaces are located, and the length of each arc-shaped locking sheet along the circumferential direction is smaller than that of each eccentric curved surface; when one end of the arc-shaped locking piece is contacted with the step, the outer circle of the arc-shaped locking piece is completely attached to the eccentric curved surface, and the inner circle of the arc-shaped locking piece is concentric with the outer hexagonal sleeve;
the inner wall of four arc stay is equipped with can correspond threaded connection's internal thread with lead screw right half section, and the outer wall of every arc stay is equipped with spacing guide slot along the circumferencial direction, and outer hexagonal cover inner wall is equipped with the mounting groove in the position that closes on the step, and the mounting groove internal fixation is equipped with the spring, and the spring outer end is equipped with the reference column, and the reference column stretches into in the spacing guide slot.
By adopting the technical scheme, the specific process for performing closed construction operation on the inclined large-diameter drill hole comprises the following steps:
(1) the single-bag and the grouting pipe are placed into the inclined large-diameter drill hole from the orifice at the right end of the inclined large-diameter drill hole to the left, the outlet end of the grouting pipe is connected with the single-bag, the grouting pipe is provided with an explosion valve, and the inlet end of the grouting pipe is provided with a grouting valve outside the orifice of the inclined large-diameter drill hole;
(2) placing the sealing assembly in the inclined large diameter borehole;
(3) the inflation expansion hole sealing part is connected with an air injection pump through an air injection pipe, and the air injection pump is started to expand the inflation expansion hole sealing part to seal the inclined large-diameter drill hole;
(4) rotating the handle rod, driving the connecting rod assembly to stretch along the radial direction of the lead screw through the lead screw until the outer end of the connecting rod assembly is jacked into the hole wall of the inclined large-diameter drill hole, and then screwing the locking device to lock and position the connecting rod assembly;
(5) the inlet end of the grouting pipe is connected with a grouting pump, and the grouting pump is started to perform grouting in the single-bag and the inclined large-diameter drill hole between the single-bag and the inflatable expansion hole sealing part through the grouting pipe;
(6) after grouting for 24 hours, solidifying the slurry; and (4) removing the hole sealing assembly.
The step (3) is specifically as follows: connecting a third interface of the three-way pipe with an air injection pump through an air injection pipe, opening an outer air injection valve on the three-way pipe, closing the inner air injection valve, and starting the air injection pump to inject air into the outer annular air bag; the excircle of the outer annular air bag expands and is pressed and sealed with the inner wall of the inclined large-diameter drill hole, and when the reading of an outer pressure gauge is 0.3MPa, the air injection pump is closed to stop injecting air; and then closing the outer air injection valve, opening the inner air injection valve, starting the air injection pump, injecting air into the inner annular air bag, pressing and sealing the inner circle of the inner annular air bag and the outer circle of the grouting pipe, closing the air injection pump to stop injecting air when the reading of the inner pressure gauge is 0.2MPa, and then closing the inner air injection valve.
The step (4) is specifically as follows: one hand rotates the handle rod, the other hand holds a right connecting rod to drive the screw rod to rotate, as the left half section and the right half section of the screw rod are respectively provided with a forward thread and a reverse thread, a left nut in threaded connection with the left half section of the screw rod moves rightwards along the screw rod, a right nut in threaded connection with the right half section of the screw rod moves leftwards along the screw rod, an included angle between the left connecting rod and the right connecting rod of the V-shaped rod piece is driven to be reduced, a left gear and a right gear are meshed to enable the left connecting rod and the right connecting rod to rotate synchronously, the mounting block and the positioning needle move towards the hole wall of the inclined large-diameter drill hole until the positioning needle is pricked into the hole wall of the inclined large-diameter drill hole, the handle rod stops rotating after the mounting block is in abutting contact with the hole wall of the inclined large-diameter drill hole, then the outer six-edge sleeve and the four arc-shaped locking sheets move leftwards to be in contact, because the distance between an eccentric curve formed by the cross section of each section of eccentric curved surface and the central line of the outer hexagonal sleeve is gradually reduced along the anticlockwise direction, the eccentric curved surface drives the four arc-shaped locking pieces to simultaneously move towards the center of the screw rod, the inner walls of the arc-shaped locking pieces are in threaded connection with the right half section of the screw rod, the outer hexagonal sleeve is continuously rotated, the outer hexagonal sleeve and the four arc-shaped locking pieces rotate along the screw rod and move leftwards until the left end of the outer hexagonal sleeve presses a right nut and the four arc-shaped locking pieces are also fastened with the screw rod to complete the positioning of the included angle of the V-shaped rod, and the fact that the telescopic positioning part of the hand-driven screw rod transmission connecting rod is firmly positioned and connected.
The concrete grouting process in the step (5) comprises the following steps: the grouting method comprises the steps of firstly connecting a grout outlet of a grouting pump with an inlet end of a grouting pipe through a quick connector, opening a grouting valve, injecting grout into the inner part of a single bag through the grouting pipe by the grouting pump, plugging inclined large-diameter drilled holes by expansion of the single bag, forming a grouting hole sealing section between the single bag and a disc at the moment, opening a blasting valve when grouting pressure is larger than 1.2MPa, grouting grout into the grouting hole sealing section until the grouting hole sealing section is filled with the grout, closing the grouting valve, and separating the quick connector from the inlet end of the grouting pipe.
The concrete process of removing the hole sealing assembly in the step (6) is as follows: firstly, clamping the outer hexagonal sleeve by using a wrench, reversely rotating the outer hexagonal sleeve, loosening the four arc-shaped locking sheets, then reversely rotating the handle rod, driving the left nut to move leftwards along the screw rod after the screw rod rotates, driving the right nut to move rightwards along the screw rod, increasing the included angle between the left connecting rod and the right connecting rod of the V-shaped rod piece, moving the mounting block and the positioning pin to the center of the inclined large-diameter drill hole, and stopping rotating the handle rod until the positioning pin is separated from the hole wall of the inclined large-diameter drill hole; then an inner exhaust valve on the inner annular air bag is opened to deflate the inner annular air bag; then the outer air bag is deflated through an outer air exhaust valve on the outer air bag, and the excircle of the outer air bag is separated from the contact with the hole wall of the drill hole; finally, the whole hole sealing assembly is drawn out to the outside of the inclined large-diameter drill hole along the grouting pipe, and the grouting pipe is left in the inclined large-diameter drill hole; in order to conveniently store the telescopic positioning part of the transmission connecting rod of the hand-driven screw rod, the handle rod is further rotated, the left nut continues to move leftwards along the screw rod, the right nut moves rightwards along the screw rod, and the included angle between the left connecting rod and the right connecting rod of the V-shaped rod piece is close to 180 degrees and is parallel to the screw rod.
In the invention, the disk of the inflatable expansion hole sealing part is made of toughened glass, and the grouting condition in the drilled hole can be observed through the disk; the outer circle of the disc is provided with an outer annular groove, so that an outer annular air bag for fixedly installing the outer annular air bag is easier to fix; be equipped with the slip casting perforation on the disc, the fenestrate inner wall of slip casting sets up the inner ring groove that is used for annular gasbag in the fixed mounting, and outer annular gasbag is fixed at the disc periphery, and the main function is the space between sealed disc and the slope major diameter drilling inner wall, and the annular gasbag main function in the interior is the space between sealed slip casting pipe and the slip casting perforation. Through the setting of interior annular gasbag and outer annular gasbag for the hole sealing sub-assembly will incline major diameter drilling shutoff tight, the thick liquid can not reveal to the drill way during the assurance slip casting. Because the inner wall of the inclined large-diameter drill hole is not smooth, the air pressure of the outer annular air bag is higher than that of the inner annular air bag.
According to the invention, the telescopic positioning part of the transmission connecting rod of the manual-driving screw rod adopts the left nut and the right nut which are in threaded connection on the positive and negative sections of threads of the manual-rotating screw rod, three groups of V-shaped rods are arranged between the left nut and the right nut and can be extended or shortened along the radial direction, and the pricker on the mounting block is pricked into the hole wall of the inclined large-diameter drill hole during extension, so that a solid support is provided for the inflatable hole sealing part during grouting. When the drill is disassembled, the screw rod is rotated reversely, the three groups of V-shaped rod pieces can be shortened along the radial direction, and the puncture needle is separated from the hole wall of the inclined large-diameter drill hole.
When the screw rod rotates, the locking device is not in threaded connection with the screw rod, after the screw rod rotates to a position, in order to limit the screw rod not to rotate, the locking device with a unique structure is adopted, and the locking device adopts a mode of rotating the outer hexagonal sleeve to drive the four arc-shaped locking sheets to be in threaded connection with the screw rod and tightly press the right nut. Four sections of eccentric curved surfaces are arranged on the inner wall of the outer hexagonal sleeve, the four arc-shaped locking sheets are in threaded fastening connection with the screw rod through the rotation of the outer hexagonal sleeve, and meanwhile, the outer hexagonal sleeve is in compression joint with the right nut, so that the included angle of the V-shaped rod piece is stable. The spring and the positioning column are arranged, so that the four arc-shaped locking sheets cannot axially move in the outer hexagonal sleeve, and the four arc-shaped locking sheets are prevented from falling off in the outer hexagonal sleeve.
In conclusion, the hole sealing assembly is scientific in principle, simple in structure, convenient to operate and high in automation degree, the hole sealing assembly is firmly fixed in the inclined large-diameter drill hole and can be used for quickly sealing the drill hole for grouting operation, the positioning effect is good, the stability of the bag during grouting is ensured, the problem that grouting materials, gangue and accumulated water easily enter a roadway can be solved after grouting is completed, the practicability is high, and the hole sealing assembly has important popularization value.
Drawings
FIG. 1 is a plan view of an inclined large diameter borehole;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural view of the present invention in an operating state;
FIG. 4 is a schematic perspective view of the V-shaped rod of the sealing assembly of the present invention after being unfolded;
FIG. 5 is a schematic perspective view of the V-shaped rod of the sealing assembly of the present invention after contraction;
FIG. 6 is a cross-sectional view of the disc, inner annular bladder and outer annular bladder;
FIG. 7 is an enlarged view at B in FIG. 4;
FIG. 8 is a cross-sectional view of the locking device of FIG. 4;
FIG. 9 is a top view of the locking device;
fig. 10 is a schematic horizontal cross-section of an outer hexagonal sleeve in a locking device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3-8, the air bag positioning and sealing device for sealing the inclined large-diameter drill hole of the coal mine is obliquely arranged from left to right and comprises a sealing assembly, a single-bag 32 and a grouting pipe 3 which are all arranged in the inclined large-diameter drill hole 2, wherein the outlet end of the grouting pipe 3 is connected with the single-bag 32, the grouting pipe 3 is provided with a burst valve 33, and the inlet end of the grouting pipe 3 is provided with a grouting valve 31 positioned outside the orifice of the inclined large-diameter drill hole 2.
The hole sealing assembly comprises an inflatable expansion hole sealing part 1 and a hand-driven screw rod transmission connecting rod telescopic positioning part 30 which are connected with each other, the inflatable expansion hole sealing part 1 is positioned on the left side of the hand-driven screw rod transmission connecting rod telescopic positioning part 30 in the inclined large-diameter drill hole 2, a grouting pipe 3 penetrates through the inflatable expansion hole sealing part 1, and a blasting valve 33 is positioned between a single bag 32 and the inflatable expansion hole sealing part 1.
The hand-driven lead screw transmission connecting rod telescopic positioning part 30 comprises a lead screw 6 and a connecting rod assembly, the left end of the lead screw 6 is rotatably connected to the inflatable hole sealing part 1, a left half section and a right half section of the lead screw 6 are respectively provided with a forward thread and a reverse thread, the left middle part of the connecting rod assembly is in threaded connection with the left half section of the lead screw 6, the right middle part of the connecting rod assembly is in threaded connection with the right half section of the lead screw 6, the right end of the lead screw 6 is provided with a handle rod 7 for driving the lead screw 6 to rotate, and the right half section of the lead screw 6.
Inflation hole sealing part 1 includes disc 5 and outer annular gasbag 8, disc 5 center set up threaded hole 9, outer annular groove has been seted up along the circumferencial direction in the excircle of disc 5, outer annular gasbag 8 is installed in outer annular groove, the slip casting perforation 10 parallel with threaded hole 9 is seted up to the eccentric department of disc 5, slip casting pipe 3 wears to establish in slip casting perforation 10, inner annular groove has been seted up to the circle in slip casting perforation 10, the inner ring inslot is equipped with interior annular gasbag 11 of cover on slip casting pipe 3.
The air inlet of interior annular gasbag 11 is connected through a three-way pipe 12 with outer annular gasbag 8's air inlet, the third interface connection of three-way pipe 12 the gas injection pipe, be equipped with the outer gas injection valve 13 that closes on outer annular gasbag 8 air inlet on the three-way pipe 12, be equipped with the interior gas injection valve 14 that closes on inner annular gasbag 11 air inlet on the three-way pipe 12, be equipped with outer manometer 15 between outer gas injection valve 13 and outer annular gasbag 8 air inlet on the three-way pipe 12, be equipped with interior manometer 16 between interior gas injection valve 14 and inner annular gasbag 11 air inlet on the three-way pipe 12, be equipped with interior exhaust valve 17 on the inner annular gasbag 11, be equipped with outer exhaust valve 18 on the outer annular.
A bearing seat 20 is fixedly arranged in the center of the disc 5, a stud in threaded connection with the threaded hole 9 is arranged at the left end of the bearing seat 20, the left end of the screw rod 6 is rotatably connected into the bearing seat 20 through a bearing, and the center line of the screw rod 6 is superposed with the center line of the disc 5;
the connecting rod component comprises a left nut 21, a right nut 22 and three groups of V-shaped rod pieces, the left nut 21 is in threaded connection with the left half section of the screw rod 6, the right nut 22 is in threaded connection with the right half section of the screw rod 6, the three groups of V-shaped rod pieces are uniformly arranged along the circumferential direction of the screw rod 6, each group of V-shaped rod pieces comprises a left connecting rod 23, a right connecting rod 24, an installation block 25 and a positioning needle 26, the inner end of the left connecting rod 23 is rotatably connected with the left nut 21, the inner end of the right connecting rod 24 is rotatably connected with the right nut 22, the screw rod 6 is positioned on the plane where the left connecting rod 23 and the right connecting rod 24 of the same group are positioned, the inner side of the installation block 25 is provided with an installation groove 29, the outer end of the left connecting rod 23 is fixedly connected with a left gear 27 positioned on the left side in the installation groove 29, the outer end of the right connecting rod 24 is fixedly connected, the left gear 27 is meshed with the right gear 28, the positioning needle 26 is arranged along the radial direction of the screw rod 6, and the inner end of the screw rod 6 is fixedly connected to the outer side surface of the mounting block 25.
The locking device 19 comprises an outer hexagonal sleeve 34 and four arc-shaped locking sheets 35, four sections of eccentric curved surfaces 36 are uniformly arranged on the inner ring of the outer hexagonal sleeve 34 along the circumferential direction, the distance between an eccentric curve formed by the cross section of each section of eccentric curved surface 36 and the central line of the outer hexagonal sleeve 34 is gradually reduced along the counterclockwise direction, the two sections of eccentric curves are connected end to end and have a step 40 at the joint, the four arc-shaped locking sheets 35 are respectively arranged on the inner wall of the outer hexagonal sleeve 34 where the four sections of eccentric curved surfaces 36 are located, and the length of the arc-shaped locking sheets 35 along the circumferential direction is smaller than that of the eccentric curved surfaces 36; when one end of the arc-shaped locking piece 35 is contacted with the step 40, the outer circle of the arc-shaped locking piece 35 is completely attached to the eccentric curved surface 36, and the inner circle of the arc-shaped locking piece 35 is concentric with the outer hexagonal sleeve 34;
the inner wall of four arc-shaped locking pieces 35 is provided with an inner thread which can be in threaded connection with the right half section of the screw rod 6 correspondingly, the outer wall of each arc-shaped locking piece 35 is provided with a limiting guide groove 37 along the circumferential direction, the inner wall of the outer hexagonal sleeve 34 is provided with a mounting groove 29 at a position close to the step 40, a spring 38 is fixedly arranged in the mounting groove 29, the outer end of the spring 38 is provided with a positioning column 39, and the positioning column 39 extends into the limiting guide groove 37.
The specific process of the invention for carrying out closed construction operation on the inclined large-diameter drill hole comprises the following steps:
(1) the single-bag 32 and the grouting pipe 3 are placed into the inclined large-diameter drill hole 2 from the orifice at the right end of the inclined large-diameter drill hole 2 to the left, the outlet end of the grouting pipe 3 is connected with the single-bag 32, the grouting pipe 3 is provided with a blasting valve 33, and the inlet end of the grouting pipe 3 is provided with a grouting valve 31 positioned outside the orifice of the inclined large-diameter drill hole 2;
(2) placing the sealing assembly in the inclined large diameter borehole 2;
(3) the inflation expansion hole sealing part 1 is connected with an air injection pump through an air injection pipe, and the air injection pump is started to expand the inflation expansion hole sealing part 1 to seal the inclined large-diameter drill hole 2;
(4) rotating the handle rod 7, driving the connecting rod assembly to extend in the radial direction of the screw rod 6 through the screw rod 6 until the outer end of the connecting rod assembly is pushed into the hole wall of the inclined large-diameter drill hole 2, and then screwing the locking device 19 to lock and position the connecting rod assembly;
(5) the inlet end of the grouting pipe 3 is connected with a grouting pump 4, and the grouting pump 4 is started to perform grouting in the single-bag 32 and the inclined large-diameter drill hole 2 between the single-bag 32 and the inflatable expansion hole sealing part 1 through the grouting pipe 3;
(6) after grouting for 24 hours, solidifying the slurry; and (4) removing the hole sealing assembly.
The step (3) is specifically as follows: connecting a third interface of the three-way pipe 12 with an air injection pump through an air injection pipe, opening an outer air injection valve 13 on the three-way pipe 12, closing an inner air injection valve 14, and starting the air injection pump to inject air into the outer annular air bag 8; the excircle of the outer annular air bag 8 expands and is pressed and sealed with the inner wall of the inclined large-diameter drill hole 2, and when the reading of an outer pressure gauge 15 is 0.3MPa, the air injection pump is closed to stop injecting air; and then closing the outer air injection valve 13, opening the inner air injection valve 14, starting the air injection pump, injecting air into the inner annular air bag 11, pressing and sealing the inner circle of the inner annular air bag 11 and the outer circle of the grouting pipe 3, closing the air injection pump to stop injecting air when the reading of the inner pressure gauge 16 is 0.2MPa, and then closing the inner air injection valve 14.
The step (4) is specifically as follows: one hand rotates the handle rod 7, the other hand holds a right connecting rod 24 to drive the screw rod 6 to rotate, as the left half section and the right half section of the screw rod 6 are respectively provided with a forward thread and a reverse thread, the left nut 21 in threaded connection with the left half section of the screw rod 6 moves rightwards along the screw rod 6, the right nut 22 in threaded connection with the right half section of the screw rod 6 moves leftwards along the screw rod 6, the included angle between the left connecting rod 23 and the right connecting rod 24 of the V-shaped rod piece is driven to be reduced, the left gear 27 and the right gear 28 are meshed to enable the left connecting rod 23 and the right connecting rod 24 to synchronously rotate, the mounting block 25 and the positioning needle 26 move towards the hole wall of the inclined large-diameter drill hole 2 until the positioning needle 26 is pricked into the hole wall of the inclined large-diameter drill hole 2, the handle rod 7 stops rotating after the mounting block 25 is in abutting contact with the hole wall of the inclined large-diameter drill hole 2, and then the outer six prismatic sleeves 34, then a spanner is used for clamping the outer hexagonal sleeve 34 to drive the outer hexagonal sleeve 34 to rotate, because the distance between an eccentric curve formed by the cross section of each section of the eccentric curved surface 36 and the central line of the outer hexagonal sleeve 34 is gradually reduced along the anticlockwise direction, the eccentric curved surface 36 drives the four arc-shaped locking sheets 35 to simultaneously move towards the center of the screw rod 6, the inner walls of the arc-shaped locking sheets 35 are in threaded connection with the right half section of the screw rod 6, the outer hexagonal sleeve 34 is continuously rotated, the outer hexagonal sleeve 34 and the four arc-shaped locking sheets 35 rotate along the screw rod 6 and move leftwards until the right nut 22 is pressed by the left end of the outer hexagonal sleeve 34 and the four arc-shaped locking sheets 35 are fastened with the screw rod 6, the positioning of the included angle of the V-shaped rod is completed, and the transmission connecting rod telescopic positioning part 30 of the hand-driven screw rod 6 is.
The concrete grouting process in the step (5) comprises the following steps: the grouting valve 31 is opened, the grouting pump 4 injects grout into the single-bag 32 through the grouting pipe 3, the single-bag 32 expands to plug the inclined large-diameter drill hole 2, a grouting hole sealing section is formed between the single-bag 32 and the disc 5 at the moment, when the grouting pressure is greater than 1.2MPa, the explosion valve 33 is opened, the grout is injected into the grouting hole sealing section, the grouting valve 31 is closed until the grouting hole sealing section is full of grout, and the quick connector 41 is separated from the inlet end of the grouting pipe 3.
The concrete process of removing the hole sealing assembly in the step (6) is as follows: firstly, a wrench is used for clamping the outer hexagonal sleeve 34, the outer hexagonal sleeve 34 is rotated reversely, the four arc-shaped locking pieces 35 are loosened, then the handle rod 7 is rotated reversely, the screw rod 6 rotates to drive the left nut 21 to move leftwards along the screw rod 6, the right nut 22 moves rightwards along the screw rod 6, the included angle between the left connecting rod 23 and the right connecting rod 24 of the V-shaped rod piece is increased, the mounting block 25 and the positioning needle 26 move towards the center of the inclined large-diameter drill hole 2, and the handle rod 7 stops rotating until the positioning needle 26 is separated from the hole wall of the inclined large-diameter drill hole 2; then an inner exhaust valve 17 on the inner annular air bag 11 is opened to deflate the inner annular air bag 11; then the outer air outlet valve 18 on the outer annular air bag 8 is used for discharging air from the outer annular air bag 8, and the excircle of the outer annular air bag 8 is separated from the hole wall of the drilled hole; finally, the whole hole sealing assembly is drawn out to the outside of the inclined large-diameter drill hole 2 along the grouting pipe 3, and the grouting pipe 3 is left in the inclined large-diameter drill hole 2; in order to conveniently drive the screw rod 6 to drive the storage of the telescopic positioning part 30 of the connecting rod, the handle rod 7 is further rotated, the left nut 21 continues to move leftwards along the screw rod 6, the right nut 22 moves rightwards along the screw rod 6, and the included angle between the left connecting rod 23 and the right connecting rod 24 of the V-shaped rod is close to 180 degrees and is parallel to the screw rod 6.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (5)
1. A slope major diameter drilling slope low slope setting in the left and right sides, its characterized in that for colliery slope major diameter drilling confined gasbag location hole sealing device: the hole sealing assembly is arranged in the inclined large-diameter drill hole, the single bag is arranged in the inclined large-diameter drill hole, the outlet end of the grouting pipe is connected with the single bag, the grouting pipe is provided with an explosion valve, and the inlet end of the grouting pipe is provided with a grouting valve outside the orifice of the inclined large-diameter drill hole;
the hole sealing assembly comprises an inflatable expansion hole sealing part and a hand-driven screw rod transmission connecting rod telescopic positioning part which are connected with each other, the inflatable expansion hole sealing part is positioned on the left side of the hand-driven screw rod transmission connecting rod telescopic positioning part in the inclined large-diameter drill hole, the grouting pipe penetrates through the inflatable expansion hole sealing part, and the blasting valve is positioned between the single-bag and the inflatable expansion hole sealing part;
the telescopic positioning part of the hand-driven lead screw transmission connecting rod comprises a lead screw and a connecting rod assembly, the left end of the lead screw is rotatably connected to the inflatable expansion sealing hole part, a left half section and a right half section of the lead screw are respectively provided with a forward thread and a reverse thread, the middle part of the left side of the connecting rod assembly is in threaded connection with the left half section of the lead screw, the middle part of the right side of the connecting rod assembly is in threaded connection with the right half section of the lead screw, the right end of the lead screw is provided with a handle rod for driving the lead screw to rotate.
2. The air bag positioning and sealing device for sealing the inclined large-diameter drill hole of the coal mine according to claim 1, wherein: the inflation hole sealing part comprises a disc and an outer annular air bag, a threaded hole is formed in the center of the disc, an outer annular groove is formed in the excircle of the disc along the circumferential direction, the outer annular air bag is installed in the outer annular groove, a grouting perforation parallel to the threaded hole is formed in the eccentric position of the disc, a grouting pipe is arranged in the grouting perforation in a penetrating mode, an inner annular groove is formed in the inner circle of the grouting perforation, and an inner annular air bag sleeved on the grouting pipe is arranged in the inner annular groove.
3. The air bag positioning and sealing device for sealing the inclined large-diameter drill hole of the coal mine according to claim 2, wherein: the air inlet of interior annular gasbag is connected through a three-way pipe with outer annular gasbag's air inlet, the third interface connection of three-way pipe the gas injection pipe, be equipped with the outer gas injection valve that closes on outer annular gasbag air inlet on the three-way pipe, be equipped with the interior gas injection valve that closes on inner annular gasbag air inlet on the three-way pipe, be equipped with outer manometer between outer gas injection valve and outer annular gasbag air inlet on the three-way pipe, manometer in being equipped with between interior gas injection valve and inner annular gasbag air inlet on the three-way pipe, exhaust valve in being equipped with on the inner annular gasbag, outer exhaust valve is equipped with on the outer.
4. The air bag positioning and sealing device for sealing the inclined large-diameter drill hole of the coal mine according to claim 2, wherein: a bearing seat is fixedly arranged at the center of the disc, a stud in threaded connection with the threaded hole is arranged at the left end of the bearing seat, the left end of the screw rod is rotatably connected in the bearing seat through a bearing, and the central line of the screw rod is superposed with the central line of the disc;
the connecting rod component comprises a left nut, a right nut and three groups of V-shaped rod pieces, the left nut is in threaded connection with the left half section of the screw rod, the right nut is in threaded connection with the right half section of the screw rod, the three groups of V-shaped rod pieces are uniformly arranged along the circumferential direction of the screw rod, each group of V-shaped rod pieces comprises a left connecting rod, a right connecting rod, an installation block and a positioning needle, the inner end of the left connecting rod is rotatably connected with the left nut, the inner end of the right connecting rod is rotatably connected with the right nut, the screw rod is positioned on the plane where the left connecting rod and the right connecting rod of the same group are positioned, an installation groove is formed in the inner side of the installation block, the outer end of the left connecting rod is fixedly connected with a left gear positioned on the left side in the installation groove, the outer end of the right connecting rod is fixedly connected with a right gear positioned on the right side in the installation, the inner end of the screw rod is fixedly connected to the outer side surface of the mounting block.
5. The air bag positioning and sealing device for sealing the inclined large-diameter drill hole of the coal mine according to claim 1, wherein: the locking device comprises an outer hexagonal sleeve and four arc-shaped locking sheets, wherein four sections of eccentric curved surfaces are uniformly arranged on the inner ring of the outer hexagonal sleeve along the circumferential direction, the distance between an eccentric curve formed by the cross section of each section of eccentric curved surface and the central line of the outer hexagonal sleeve is gradually reduced along the counterclockwise direction, the two sections of eccentric curves are connected end to end and have steps at the connecting part, the four arc-shaped locking sheets are respectively arranged on the inner wall of the outer hexagonal sleeve where the four sections of eccentric curved surfaces are located, and the length of each arc-shaped locking sheet along the circumferential direction is smaller than that of each eccentric curved surface; when one end of the arc-shaped locking piece is contacted with the step, the outer circle of the arc-shaped locking piece is completely attached to the eccentric curved surface, and the inner circle of the arc-shaped locking piece is concentric with the outer hexagonal sleeve;
the inner wall of four arc stay is equipped with can correspond threaded connection's internal thread with lead screw right half section, and the outer wall of every arc stay is equipped with spacing guide slot along the circumferencial direction, and outer hexagonal cover inner wall is equipped with the mounting groove in the position that closes on the step, and the mounting groove internal fixation is equipped with the spring, and the spring outer end is equipped with the reference column, and the reference column stretches into in the spacing guide slot.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598511.XA CN112761572A (en) | 2020-12-30 | 2020-12-30 | Air bag positioning and hole sealing device for sealing inclined large-diameter drill hole of coal mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598511.XA CN112761572A (en) | 2020-12-30 | 2020-12-30 | Air bag positioning and hole sealing device for sealing inclined large-diameter drill hole of coal mine |
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| CN112761572A true CN112761572A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011598511.XA Pending CN112761572A (en) | 2020-12-30 | 2020-12-30 | Air bag positioning and hole sealing device for sealing inclined large-diameter drill hole of coal mine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107420A (en) * | 2021-05-11 | 2021-07-13 | 山东尔辰智控科技有限公司 | Accurate positioning and rapid hole sealing method for mining inclined large-diameter deep hole |
| CN113914815A (en) * | 2021-09-30 | 2022-01-11 | 吕梁学院 | Long-distance multi-section grouting and hole sealing device for coal mine gas extraction drill hole |
| CN114320413A (en) * | 2021-11-26 | 2022-04-12 | 淮北矿业股份有限公司 | A high pressure resistant accurate location hole sealing device for slip casting stock |
| CN114673482A (en) * | 2022-03-29 | 2022-06-28 | 无锡工艺职业技术学院 | Portable system of patrolling and examining in 5G wisdom colliery |
| CN115182352A (en) * | 2022-08-09 | 2022-10-14 | 中铁建工集团有限公司 | Grouting pipe pile construction device and construction method |
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2020
- 2020-12-30 CN CN202011598511.XA patent/CN112761572A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107420A (en) * | 2021-05-11 | 2021-07-13 | 山东尔辰智控科技有限公司 | Accurate positioning and rapid hole sealing method for mining inclined large-diameter deep hole |
| CN113914815A (en) * | 2021-09-30 | 2022-01-11 | 吕梁学院 | Long-distance multi-section grouting and hole sealing device for coal mine gas extraction drill hole |
| CN114320413A (en) * | 2021-11-26 | 2022-04-12 | 淮北矿业股份有限公司 | A high pressure resistant accurate location hole sealing device for slip casting stock |
| CN114673482A (en) * | 2022-03-29 | 2022-06-28 | 无锡工艺职业技术学院 | Portable system of patrolling and examining in 5G wisdom colliery |
| CN114673482B (en) * | 2022-03-29 | 2022-10-11 | 无锡工艺职业技术学院 | Portable system of patrolling and examining in 5G wisdom colliery |
| CN115182352A (en) * | 2022-08-09 | 2022-10-14 | 中铁建工集团有限公司 | Grouting pipe pile construction device and construction method |
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