CN114991699A - Hole sealing device and method for underground space top plate drilling - Google Patents
Hole sealing device and method for underground space top plate drilling Download PDFInfo
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- CN114991699A CN114991699A CN202210536715.3A CN202210536715A CN114991699A CN 114991699 A CN114991699 A CN 114991699A CN 202210536715 A CN202210536715 A CN 202210536715A CN 114991699 A CN114991699 A CN 114991699A
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- 238000007789 sealing Methods 0.000 title claims abstract description 344
- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000003566 sealing material Substances 0.000 claims description 107
- 239000000945 filler Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 230000002708 enhancing effect Effects 0.000 abstract 1
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- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 5
- 239000002360 explosive Substances 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000005422 blasting Methods 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
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- 229920001971 elastomer Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- -1 Polyethylene Polymers 0.000 description 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 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
- E21B33/12—Packers; Plugs
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The embodiment of the invention discloses a hole sealing device for a top plate drill hole of an underground space, and relates to the technical field of drill hole sealing. The invention aims to solve the problem of poor hole sealing effect of the top plate drill hole of the underground space. The hole sealing device for drilling the top plate of the underground space comprises a hole sealing device main body, wherein the hole sealing device main body is a cylindrical structure with openings at two ends, and material passing holes are formed in the wall of the hole sealing device main body; the first elastic plug is fixedly connected with the hole sealing device main body and used for sealing the first opening; the second elastic plug is fixedly connected with the hole sealing device main body and used for sealing the second opening; the end part of the first hole sealing pipe penetrates through the first elastic plug and is positioned inside the hole sealing device main body and close to the first opening; and the end part of the second hole sealing pipe penetrates through the second elastic plug and is positioned outside the hole sealing device main body and close to the second opening. The method is suitable for application scenes of enhancing the hole sealing effect of the top plate drill hole in the underground space.
Description
Technical Field
The invention relates to the technical field of drilling plugging. In particular to a hole sealing device and a method for drilling a top plate of an underground space.
Background
At present, when hole sealing is carried out on top plate drilling holes in underground spaces, a 'two-plugging one-injecting' hole sealing method is generally adopted for each mine, the drilling holes are firstly sealed by bags at two ends of a hole sealing section, slurry or polyurethane is filled in the bags, after the slurry or the polyurethane in the bags foams, expands and condenses, the hole sealing section is injected with slurry, and under the action of grouting pressure, the slurry permeates into the walls of the drilling holes and fills cracks around the drilling holes to complete hole sealing. In the process of realizing hole sealing, the inventor finds that at least in the prior art, when the grouting pressure is too high, the bag close to the shallow hole opening of the drill hole moves outwards due to the too high pressure of the slurry acting on the bag, so that the hole sealing effect of the drill hole is poor, and the hole sealing construction process is complex and the cost is too high.
Disclosure of Invention
In view of this, embodiments of the present invention provide a hole sealing device and method for a top plate borehole of an underground space, which improve hole sealing efficiency and reduce hole sealing cost based on a hole sealing effect of the top plate borehole of the underground space.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a hole sealing device for a top plate borehole in an underground space, including: the hole sealing device comprises a hole sealing device body, a first connecting piece and a second connecting piece, wherein the hole sealing device body is of a cylindrical structure with openings at two ends, a material passing hole is formed in the cylindrical wall of the hole sealing device body, the first end of the hole sealing device body is at least provided with the first connecting piece and the second connecting piece, and the second end of the hole sealing device body is at least provided with the third connecting piece and the fourth connecting piece; the first elastic plug is arranged at the first end of the hole sealing device main body, at least a fifth connecting piece and a sixth connecting piece are arranged on the first elastic plug, and the fifth connecting piece and the sixth connecting piece are respectively matched and connected with the first connecting piece and the second connecting piece so as to fixedly connect the first elastic plug with the hole sealing device main body and seal the first opening; the second elastic plug is arranged at the second end of the hole sealing device main body, at least a seventh connecting piece and an eighth connecting piece are arranged on the second elastic plug, and the seventh connecting piece and the eighth connecting piece are respectively matched and connected with the third connecting piece and the fourth connecting piece so as to fixedly connect the second elastic plug with the hole sealing device main body and seal the second opening; the end part of the first hole sealing pipe penetrates through the first elastic plug and is positioned in the hole sealing device main body and close to the first opening; and the end part of the second hole sealing pipe penetrates through the second elastic plug and is positioned outside the hole sealing device main body and close to the second opening.
According to a specific implementation manner of the embodiment of the invention, the hole sealing device further comprises a first exhaust pipe, wherein the end part of the first exhaust pipe penetrates through the first elastic plug and is positioned in the hole sealing device main body and close to the second opening; and the end part of the second exhaust pipe penetrates through the first elastic plug and the second elastic plug respectively and is positioned at a preset position outside the hole sealing device main body.
According to a specific implementation manner of the embodiment of the invention, the exhaust pipe drilling device further comprises a conical head, wherein the conical head is fixedly connected with the end part, located at the deep part of the drilling hole, of the second exhaust pipe; when the end part of the second exhaust pipe is connected with the conical head, exhaust holes are formed in the second exhaust pipe and located below the conical head in the radial direction of the second exhaust pipe.
According to a specific implementation of the embodiment of the invention, the first exhaust pipe comprises a first exhaust branch pipe and a second exhaust branch pipe, and the first exhaust branch pipe is positioned in the second exhaust branch pipe; and/or the second exhaust pipe includes a third exhaust branch pipe and a fourth exhaust branch pipe, the third exhaust branch pipe being located within the fourth exhaust branch pipe.
According to a specific implementation manner of the embodiment of the invention, first fillers are respectively arranged in the first exhaust pipe and the second exhaust pipe.
According to a specific implementation manner of the embodiment of the invention, a first preset distance is reserved between the end part of the second exhaust pipe located at the preset position and a hole sealing object in the underground space roof drill hole.
According to a specific implementation manner of the embodiment of the invention, a second filler is arranged between the end part of the second exhaust pipe at the preset position and a hole sealing object in the underground space roof drilling hole.
According to a specific implementation manner of the embodiment of the invention, a first through hole, a second through hole, a third through hole and a fourth through hole are circumferentially arranged on the inner edge of the first elastic plug and on one sides of the fifth connecting piece and the sixth connecting piece, which are close to the center of the first elastic plug; a fifth through hole and a sixth through hole are formed in the inner edge of the second elastic plug and on one sides, close to the center of the second elastic plug, of the seventh connecting piece and the eighth connecting piece along the circumferential direction; the fifth through hole and the sixth through hole correspond to two of the first through hole, the second through hole, the third through hole and the fourth through hole, respectively.
In a second aspect, an embodiment of the present invention provides a method for sealing a top plate borehole in an underground space, where the method includes: cleaning the hole sealing section in the preset drill hole; pushing the hole sealing object into a first preset position in the drill hole or determining a first hole sealing position; pushing a hole sealing device for drilling a top plate of an underground space into a second preset position in the drill hole, wherein a second preset distance is arranged between the second preset position and the first preset position; injecting a first hole sealing material into a first hole sealing space of the drill hole between the first elastic plug and the second elastic plug through a first hole sealing pipe, wherein the first hole sealing material fills the inside of the hole sealing device main body, and fills the space between the hole sealing device main body and the drill hole through a material passing hole in the cylinder wall of the hole sealing device main body; and after the first hole sealing material in the first hole sealing space is hardened, injecting a second hole sealing material into a second hole sealing space of the drill hole between the second elastic plug and the exhaust hole of the second exhaust pipe through a second hole sealing pipe.
According to a specific implementation manner of the embodiment of the present invention, injecting a first hole sealing material into a first hole sealing space of the borehole between a first elastic plug and a second elastic plug through a first hole sealing pipe specifically includes: injecting a first preset volume of the first hole sealing material into the first hole sealing space through the first hole sealing pipe, or injecting the first hole sealing material into the first hole sealing space through the first hole sealing pipe until the first hole sealing material flows down in the first exhaust pipe; through second hole sealing pipe to between the exhaust hole of second elasticity stopper and second blast pipe the second hole sealing material is injected into in the second hole sealing space of drilling, specifically include: and injecting a second preset volume of the second hole sealing material into the second hole sealing space through the second hole sealing pipe, or injecting the second hole sealing material into the second hole sealing space through the second hole sealing pipe until the second hole sealing material flows down in the second exhaust pipe.
According to the hole sealing device and method for the underground space roof drill hole, provided by the embodiment of the invention, a hole sealing material is injected into a first hole sealing space in the drill hole through a first hole sealing pipe to form a first hole sealing section, and a hole sealing material is injected into a second hole sealing space in the drill hole through a second hole sealing pipe to form a second hole sealing section. When utilizing above-mentioned hole sealing device to carry out the hole sealing to underground space roof drilling, pour into first hole sealing material into earlier in the first hole sealing space of drilling and form first hole sealing section, make hole sealing device main part and drilling wall fastening connection in the first hole sealing space, pour into second hole sealing material into again in the second hole sealing space of drilling and form second hole sealing section, like this, can prevent that hole sealing device from moving outside the drilling because the hole sealing material in the second hole sealing space acts on hole sealing device's pressure too big to can strengthen the hole sealing effect of underground space roof drilling. In addition, compared with the method that the bag is adopted for sealing holes in an expansion mode, the bag material has higher requirements, and the hole sealing device can reduce the hole sealing cost in the aspect of material utilization; compared with the method that before the bag is used for sealing holes, a water injection method is needed to confirm whether the bag is damaged, and the hole sealing device can be directly used to improve the hole sealing efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the hole sealing device for a top plate borehole of an underground space according to the invention;
FIG. 2 is a schematic structural diagram of a borehole of an embodiment of the hole sealing device for a roof borehole of an underground space according to the present invention;
FIG. 3 is a schematic structural diagram of a hole sealing device for a top plate borehole of an underground space according to an embodiment of the present invention, wherein the hole sealing device is provided with an exhaust pipe;
FIG. 4 is a schematic structural diagram of a hole sealing device for a top plate drill hole of an underground space, which is provided with an exhaust pipe and is located in the drill hole, of the embodiment of the hole sealing device for the top plate drill hole of the underground space;
FIG. 5 is a schematic structural diagram of a device body of an embodiment of the hole sealing device for drilling a top plate of an underground space;
FIG. 6 is a schematic structural diagram of a second hole sealing pipe provided with a conical head and used for the hole sealing device for drilling the top plate of the underground space;
FIG. 7 is a schematic structural view of a first exhaust pipe with an exhaust pipe according to an embodiment of the hole sealing device for a roof hole of an underground space of the present invention;
FIG. 8 is a schematic structural view of a second exhaust pipe with an exhaust pipe according to an embodiment of the hole sealing device for drilling a top plate of an underground space;
FIG. 9 is a schematic structural view of a first elastic plug with an exhaust pipe of an embodiment of the hole sealing device for drilling a top plate of an underground space according to the present invention;
FIG. 10 is a schematic structural view of a second elastic plug with an exhaust pipe of an embodiment of the sealing device for a roof hole of an underground space according to the present invention;
FIG. 11 is a schematic structural diagram of a first elastic plug of an embodiment of the sealing device for a top plate borehole of an underground space according to the present invention;
FIG. 12 is a schematic structural view of a second elastic plug of an embodiment of the sealing device for a roof hole of an underground space according to the present invention;
fig. 13 is a schematic flow chart of an embodiment of the method for sealing a hole in a roof of an underground space according to the present invention.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all 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.
Example one
Referring to fig. 1 to 12, an embodiment of the present invention provides a hole sealing device for a roof hole of an underground space, including: the hole sealing device comprises a hole sealing device body 10, wherein the hole sealing device body 10 is of a cylindrical structure with openings at two ends, a material passing hole (not shown in the figure) is formed in the cylindrical wall of the hole sealing device body, at least a first connecting piece 11 and a second connecting piece 12 are arranged at a first end of the hole sealing device body 10, and at least a third connecting piece 13 and a fourth connecting piece 14 are arranged at a second end of the hole sealing device body 10; the first elastic plug 20 is arranged at a first end of the hole sealing device main body 10, at least a fifth connecting piece 21 and a sixth connecting piece 22 are arranged on the first elastic plug 20, and the fifth connecting piece 21 and the sixth connecting piece 22 are respectively matched and connected with the first connecting piece 11 and the second connecting piece 12 so as to fixedly connect the first elastic plug 20 with the hole sealing device main body 10 and seal the first opening 15; the second elastic plug 30, the second elastic plug 30 is arranged at the second end of the sealing device main body 10, at least a seventh connecting piece 31 and an eighth connecting piece 32 are arranged on the second elastic plug 30, and the seventh connecting piece 31 and the eighth connecting piece 32 are respectively matched and connected with the third connecting piece 13 and the fourth connecting piece 14 so as to fixedly connect the second elastic plug 30 with the sealing device main body 10 and seal the second opening 16; a first hole sealing pipe 40, wherein the end of the first hole sealing pipe 40 passes through the first elastic plug 20 and is positioned inside the hole sealing device body 10 near the first opening 15; a second hole sealing pipe 50, wherein the end of the second hole sealing pipe 50 passes through the second elastic plug 30 and is located outside the hole sealing device body 10 near the second opening 16.
The top plate drilling of the underground space can be the drilling of top plate blastholes of underground roadway cave, tunnel and the like. The openings at the two ends of the sealing device main body 10 may be circular, rectangular or prismatic, and the material passing hole may be circular, rectangular or a crack penetrating through the two ends, where the shapes of the openings and the material passing hole of the sealing device main body 10 are not specifically limited. The first and second hole sealing pipes 40 and 50 may each comprise a circular pipe, a rectangular pipe, or a pipe having another cross-sectional shape. The first hole sealing pipe 40 and the second hole sealing pipe 50 may be made of a material, such as Polyvinyl chloride (PVC), Polyethylene (PE), steel, or a composite material, and the composite material may be an aluminum plastic pipe, a steel braided pipe, or the like. In one example, the first hole sealing pipe 40 is a common transparent pipe with an inner diameter of 4-30mm because the first hole sealing pipe 40 is closer to the orifice of the drilled hole, is not easy to be damaged in the process of inserting into the drilled hole and has lower requirements on mechanical properties; because the second hole sealing pipe 50 is located in the deep part of the drilled hole and is easy to be damaged in the process of inserting into the drilled hole, and the requirement on mechanical property is high, a high-pressure rubber pipe or a steel pipe with the inner diameter of 5-30mm is adopted.
In one example, the second hole sealing pipe 50 includes at least a shallow hole sealing pipe and a deep hole sealing pipe, and the at least two hole sealing pipes are connected by a quick-coupling so as to improve the efficiency of the connection between the shallow hole sealing pipe and the deep hole sealing pipe while facilitating pushing the second hole sealing pipe 50 into a preset position (e.g., the bottom of a drill hole) of the drill hole, thereby improving the efficiency of sealing the drill hole. The deep hole sealing pipe and the quick connector are made of PVC or steel, and the shallow hole sealing pipe and the deep hole sealing pipe jointly form a channel of a second hole sealing material injected into the second hole sealing space of the drill hole.
Referring to fig. 5, fig. 9 to 12, in one example, the first connecting member 11, the second connecting member 12, the third connecting member 13 and the fourth connecting member 14 at both ends of the sealing device body 10 are arc-shaped connecting protrusions, respectively; the fifth connecting piece 21 and the sixth connecting piece 22 of the first elastic plug 20 are arc-shaped connecting holes corresponding to the arc-shaped connecting protrusions respectively; the seventh connecting piece 31 and the eighth connecting piece 32 of the second elastic plug 30 are arc-shaped connecting holes corresponding to the arc-shaped connecting protrusions, respectively; after the circular arc-shaped connecting protrusions at the two ends of the hole sealing device main body 10 are respectively inserted into the corresponding circular arc-shaped connecting holes, the circular arc-shaped connecting protrusions are respectively fixedly connected with the corresponding circular arc-shaped connecting holes through glue or adhesive tape with strong adhesion, so that the first elastic plug 20 and the second elastic plug 30 are respectively fixedly connected with the hole sealing device main body 10.
According to the hole sealing device for the top plate drill hole of the underground space, provided by the embodiment of the invention, a first hole sealing material is injected into a first hole sealing space of the drill hole through a first hole sealing pipe 40 to form a first hole sealing section, and a second hole sealing material is injected into a second hole sealing space of the drill hole through a second hole sealing pipe 50 to form a second hole sealing section. When utilizing above-mentioned hole sealing device to carry out the hole sealing to underground space roof drilling, pour into first hole sealing material into earlier in the first hole sealing space of drilling and form first hole sealing section, make hole sealing device main part 10 and drilling wall fastening connection in the first hole sealing space, pour into second hole sealing material into again in the second hole sealing space of drilling and form second hole sealing section, like this, can prevent hole sealing device because the pressure that the second hole sealing material in the second hole sealing space acted on hole sealing device is too big and outwards remove to the drilling, and fill the crack in first hole sealing space, effectively seal drilling second hole sealing space, thereby can strengthen the hole sealing effect of underground space roof drilling. The first hole sealing material and the second hole sealing material may be slurry having fluidity, and further, the first hole sealing material and the second hole sealing material may be the same hole sealing material or different hole sealing materials. In one example, the first hole sealing material is Marilyn, and the second hole sealing material is a cement hole sealing material.
The volume of the corresponding hole sealing material injected into the drill hole through the first hole sealing pipe 40 and the second hole sealing pipe 50 can be determined through calculation, and when the injection of the corresponding hole sealing material into the drill hole through the first hole sealing pipe 40 and the second hole sealing pipe 50 is stopped can also be determined through an exhaust pipe. Referring to fig. 3 and 4, in an embodiment, a first exhaust pipe 60 is further included, and an end of the first exhaust pipe 60 passes through the first elastic plug 20 and is located inside the sealing device body 10 near the second opening 16; and a second exhaust pipe 70, wherein the ends of the second exhaust pipe 70 are respectively positioned at a preset position outside the hole sealing device main body 10 through the first elastic plug 20 and the second elastic plug 30.
In one example, the second exhaust pipe 70 includes at least two exhaust pipes connected by a quick coupling 71 to improve the efficiency of the connection between the at least two exhaust pipes while facilitating the second exhaust pipe 70 to be pushed into a predetermined position of the borehole (e.g., the bottom of the borehole), thereby improving the efficiency of sealing the borehole. The at least two exhaust pipes and the quick connector are made of PVC or steel, and the at least two exhaust pipes jointly form a channel for injecting a second hole sealing material into the second hole sealing space of the drilled hole.
Referring to fig. 4, the second exhaust pipe 70 is preset at a position outside the hole sealing device body 10, and is determined by the length of a sealing section formed by the sealing material injected into the borehole through the second sealing pipe 50, which is designed in a practical application scenario.
In one example, the top of the first exhaust pipe 60 is provided with an inclined opening, and the tip of the top of the first exhaust pipe 60 abuts against the second elastic plug 30. In this way, when the first hole sealing material injected into the borehole through the first hole sealing pipe 40 reaches the second elastic plug 30, the first hole sealing material can flow into the first exhaust pipe 60 through the inclined opening of the first exhaust pipe 60, and flow out of the borehole through the bottom of the first exhaust pipe 60, so as to indicate that it is necessary to stop injecting the first hole sealing material into the borehole through the first hole sealing pipe 40. In another example, the top of the first exhaust pipe 60 is provided with a flush opening, and the top of the first exhaust pipe 60 is provided with a gap with the second elastic plug 30, so that when the first sealing material injected into the borehole through the first sealing pipe 40 reaches the second elastic plug 30, the first sealing material can flow into the first exhaust pipe 60 through the flush opening of the first exhaust pipe 60 and flow out of the borehole through the bottom of the first exhaust pipe 60, so as to indicate that the injection of the first sealing material into the borehole through the first sealing pipe 40 needs to be stopped.
In order to improve the efficiency of pushing the second exhaust pipe 70 into the bore, referring to fig. 6, in an embodiment, the second exhaust pipe further comprises a conical head 80, and the conical head 80 is fixedly connected with the end of the second exhaust pipe 70 located at the deep part of the bore; when the end of the second exhaust pipe 70 is connected to the conical head 80, an exhaust hole 90 is formed in the second exhaust pipe 70 below the conical head 80 in the radial direction of the second exhaust pipe 70.
The radial dimension of the bottom of the cone 80 is smaller than the bore diameter of the bore. The exhaust holes 90 are through holes, and a plurality of the exhaust holes may be formed in the second exhaust pipe 70 under the conical head 80 in the radial direction of the second exhaust pipe 70 while ensuring the mechanical properties of the top of the second exhaust pipe 70.
The conical head 80 serves to increase the efficiency of pushing the secondary exhaust pipe 70 into the bore. The exhaust hole 90 is used for allowing the second hole sealing material to flow into the second exhaust pipe 70 through the exhaust hole 90 of the second exhaust pipe 70 when the second hole sealing material injected into the borehole through the second hole sealing pipe 50 reaches the preset position, and allowing the second hole sealing material to flow out of the borehole through the bottom of the second exhaust pipe 70, so that the second hole sealing material injection into the borehole through the second hole sealing pipe 50 needs to be stopped.
In one example, a backstop structure 110 is provided on the secondary exhaust pipe 70 connected to the conical head 80. The retreat-preventing structure 110 serves to prevent the second exhaust pipe 70 connected to the conical head 80 from sliding downward in the process of pushing it to a predetermined position in the drill hole, thereby improving the efficiency of pushing the second exhaust pipe 70 connected to the conical head 80 to the predetermined position in the drill hole.
Referring to fig. 6, in one embodiment, a first filler 100 is disposed in each of the first exhaust pipe 60 and the second exhaust pipe 70.
The first filler 100 has adsorption holes capable of adsorbing the plugging material, but the plugging material, after filling the adsorption holes, is capable of flowing down the first filler 100 until flowing out from the bottom of the first exhaust pipe 60 or the second exhaust pipe 70. In one example, the first filler 100 is sponge, cotton thread, or rag.
And when the hole sealing material flows out of the bottom of the exhaust pipe, stopping injecting the hole sealing material into the drill hole through the hole sealing pipe, and completing hole sealing of the drill hole. At this moment, the exhaust pipe is located in the drilling hole, and the exhaust pipe is a hollow pipe, belongs to the hole sealing defect. Taking the drilling in the blasting operation as an example, if the exhaust pipe is a hollow pipe, part of energy generated by blasting overflows from the exhaust pipe, which affects the blasting effect and may cause production safety accidents. Through putting in first exhaust pipe 60 and second exhaust pipe 70 and establishing first filler 100, can make first exhaust pipe 60 and second exhaust pipe 70 judge whether to continue to pour into the hole sealing material into through first exhaust pipe 60 and second exhaust pipe 70 in the drilling in the performance, can make and have the hole sealing material in first exhaust pipe 60 and the second exhaust pipe 70 to it is closely knit to make the slip casting in the drilling, can strengthen the hole sealing effect of underground space roof drilling.
Referring to fig. 7 and 8, in an embodiment, the first exhaust pipe 60 includes a first exhaust branch pipe 61 and a second exhaust branch pipe 62, and the first exhaust branch pipe 61 is located in the second exhaust branch pipe 62; and/or the second exhaust pipe 70 comprises a third exhaust branch pipe 72 and a fourth exhaust branch pipe 73, the third exhaust branch pipe 72 being located inside the fourth exhaust branch pipe 73.
Wherein the first exhaust branch pipe 61 may include a plurality of pipes, each of which is located in the second exhaust branch pipe 62; the third exhaust branch pipe 72 may include a plurality of pipes, each of which is located in the fourth exhaust branch pipe 73.
The first exhaust pipe 60 and the second exhaust pipe 70 are both located in the drill hole and are hollow pipes, so that the volumes of the first exhaust pipe 60 and the second exhaust pipe 70 located in the drill hole belong to the sealing defect, and the pipe diameters of the first exhaust pipe 60 and the second exhaust pipe 70 are made to be as small as possible on the premise that sealing materials can flow in the first exhaust pipe 60 and the second exhaust pipe 70, wherein the pipe diameters of the first exhaust pipe 60 and the second exhaust pipe 70 can be determined according to engineering practice. It is understood that there are cracks, protrusions, etc. in the borehole, which are unfavorable for the first exhaust pipe 60 and the second exhaust pipe 70 to advance deep into the borehole, so the first exhaust pipe 60 and the second exhaust pipe 70 having smaller pipe diameters may be damaged during the advance deep into the borehole. In the present embodiment, by providing the first exhaust branch pipe 61 for satisfying the plugging material flow requirement and the second exhaust branch pipe 62 for satisfying the requirement for advancing deep into the borehole, it can be ensured that the first exhaust pipe 60 and the second exhaust pipe 70 can advance to the design position, and the function of the first exhaust pipe 60 and the second exhaust pipe 70 is normally exerted. The third exhaust branch pipe 72 and the fourth exhaust branch pipe 73 are provided to function as above. A baffle plate can be arranged at a preset position of the second exhaust branch pipe 62, and the baffle plate is fixedly connected with the inner wall of the second exhaust branch pipe 62 to prevent the hole sealing material from flowing out; a baffle plate may be provided at a predetermined position of the fourth exhaust branch pipe 73, and the baffle plate is fixedly connected to an inner wall of the fourth exhaust branch pipe 73 to prevent the plugging material from flowing out.
In order to avoid the sealing material injected into the second sealing space of the borehole through the second sealing pipe 50 from adversely affecting the sealing object 120, referring to fig. 2 and 4, in an embodiment, an end of the second exhaust pipe 70 located at the predetermined position has a first predetermined distance from the sealing object 120 in the roof borehole of the underground space.
The hole sealing material injected into the borehole through the second hole sealing pipe 50 is a wet hole sealing material. The plugging object 120 may be an explosive or a pipeline. When the hole sealing object 120 is an explosive, if the hole sealing material contacts with the explosive, part of the explosive cannot explode, and the explosion effect is affected. When the hole sealing object 120 is a pipeline, if the hole sealing material contacts the pipeline, the pipeline may malfunction, which affects the normal operation of the pipeline. By setting the first preset distance between the second exhaust pipe 70 and the hole sealing object 120, it is possible to prevent the hole sealing material injected into the borehole through the second hole sealing pipe 50 from contacting the hole sealing object 120, thereby avoiding the hole sealing material injected into the borehole through the second hole sealing pipe 50 from causing a negative influence on the hole sealing object 120.
In an embodiment, a second filler (not shown) is provided between the end of the second exhaust pipe 70 located at the predetermined position and the hole sealing object 120 in the roof hole of the underground space.
The secondary filler may be a rubber plug, a plastic plug, or a steel sheet. The second filler is used for generating pressure to the hole sealing material injected into the borehole through the second hole sealing pipe 50, and further prevents the hole sealing material injected into the borehole through the second hole sealing pipe 50 from contacting the hole sealing object 120, so that negative influences on the hole sealing object 120 caused by the hole sealing material injected into the borehole through the second hole sealing pipe 50 are avoided.
Referring to fig. 9 to 12, in order to make the first hole sealing pipe 40, the second hole sealing pipe 50, the first exhaust pipe 60 and the second exhaust pipe 70 respectively tightly fit the hole wall of the drilled hole, in an embodiment, a first through hole 23, a second through hole 24, a third through hole 25 and a fourth through hole 26 are circumferentially provided on the inner edge of the first elastic plug 20 and on one side of the fifth connecting piece 21 and the sixth connecting piece 22 close to the center of the first elastic plug 20; a fifth through hole 33 and a sixth through hole 34 are circumferentially arranged on the inner edge of the second elastic plug 30 and on one side of the seventh connecting piece 31 and the eighth connecting piece 32 close to the center of the second elastic plug 30; the fifth through hole 33 and the sixth through hole 34 correspond to two of the first through hole 23, the second through hole 24, the third through hole 25, and the fourth through hole 26, respectively.
In one example, the fifth through hole 33 corresponds to the third through hole 25, and the sixth through hole 34 corresponds to the fourth through hole 26. Specifically, the first hole sealing pipe 40 passes through the first through hole 23 and is positioned inside the hole sealing device main body 10 and close to the first opening 15, the first hole sealing pipe 40 is fixedly connected with the first elastic plug 20 through the glue or the adhesive tape with strong adhesiveness, the first exhaust pipe 60 passes through the second through hole 24 and is positioned inside the hole sealing device main body 10 and close to the second opening 16, and the first exhaust pipe 60 is fixedly connected with the first elastic plug 20 through the glue or the adhesive tape with strong adhesiveness; the second hole sealing pipe 50 penetrates through the third through hole 25 and the fifth through hole 33 and is located outside the hole sealing device main body 10 and close to the second opening 16, the second hole sealing pipe 50 is fixedly connected with the first elastic plug 20 and the second elastic plug 30 through glue or adhesive tape with strong adhesion, the second exhaust pipe 70 penetrates through the fourth through hole 26 and the sixth through hole 34 and is located in a preset position in a drill hole outside the hole sealing device main body 10, and the second exhaust pipe 70 is fixedly connected with the first elastic plug 20 and the second elastic plug 30 through the glue or adhesive tape with strong adhesion. Through set up first through-hole 23, second through-hole 24, third through-hole 25 and fourth through-hole 26 on the inward flange of first elasticity stopper 20, can make first hole sealing pipe 40, first blast pipe 60, second hole sealing pipe 50 and second blast pipe 70 be located respectively on the inward flange of first elasticity stopper 20 to make first hole sealing pipe 40, second hole sealing pipe 50, first blast pipe 60 and second blast pipe 70 hug closely the drilling pore wall respectively, in order to reduce the first hole sealing pipe 40, second hole sealing pipe 50, first blast pipe 60 and the second blast pipe 70 of remaining in the drilling to the influence of follow-up engineering.
Example two
Referring to fig. 13, an embodiment of the present invention provides a method for sealing a roof borehole in an underground space, the method including:
s100, cleaning the hole in the hole sealing section in the preset drill hole. For example, the hole sealing section in the drill hole is cleaned by an air pump or a water pump.
S102, pushing the hole sealing object into a first preset position in the drill hole, or determining the first hole sealing position, namely the method can be used for sealing the drill hole provided with the hole sealing object (such as explosive) and can also be used for sealing only the drill hole. And the first preset position or the first hole sealing position is determined according to the actual engineering.
S104, pushing the hole sealing device for drilling the top plate of the underground space into a second preset position in the drill hole, wherein a second preset distance is arranged between the second preset position and the first preset position. The second preset position and the second preset distance are also determined according to the actual engineering. For example, the first hole sealing space and the second hole sealing space are determined according to the total hole sealing length and the pressure generated when the hole sealing material reaches a preset position, so that a second preset distance is determined; and determining a second preset distance according to the grouting pressure and the hole sealing object.
S106, injecting a first hole sealing material into a first hole sealing space of the drill hole between the first elastic plug and the second elastic plug through the first hole sealing pipe, wherein the hole sealing material fills the inside of the hole sealing device main body, and fills the space between the hole sealing device main body and the drill hole and the hole of the drill hole through the material passing holes in the cylinder wall of the hole sealing device main body, so that the compactness of the first hole sealing space can be ensured, and the hole sealing effect is improved.
And S108, after the first hole sealing material in the first hole sealing space is hardened, injecting a second hole sealing material into a second hole sealing space of the drill hole between the second elastic plug and the exhaust hole of the second exhaust pipe through a second hole sealing pipe. The first hole sealing material in the first hole sealing space can be ensured to be hardened by standing for a preset time, and the preset time can be determined according to engineering practice.
The first hole sealing material injected into the first hole sealing space through the first hole sealing pipe and the second hole sealing material injected into the second hole sealing space through the second hole sealing pipe may be the same hole sealing material or different hole sealing materials.
According to the hole sealing method for the top plate drill hole in the underground space, provided by the embodiment of the invention, the first hole sealing material is injected into the first hole sealing space of the drill hole through the first hole sealing pipe, and after the first hole sealing material is kept standing for the preset time, the first hole sealing section can be formed, and in the process of injecting the second hole sealing material into the second hole sealing space of the drill hole through the second hole sealing pipe, the first hole sealing section can generate upward pressure on the injected second hole sealing material to offset the pressure of the second hole sealing material on the hole sealing device, so that the hole sealing device can be prevented from moving outwards of the drill hole due to the fact that the pressure of the hole sealing material on the hole sealing device is too large, all cracks of the first hole sealing space are filled at the same time, and the second hole sealing space is sealed, and therefore the hole sealing effect of the top plate drill hole in the underground space can be enhanced.
In order to prevent the injection of too much sealing material into the borehole, in an embodiment, the injection of the first sealing material into the first sealing space of the borehole between the first elastic plug and the second elastic plug through the first sealing pipe specifically includes: injecting a first hole sealing material with a preset volume into the first hole sealing space through the first hole sealing pipe, or injecting the first hole sealing material into the first hole sealing space through the first hole sealing pipe until the first hole sealing material falls off in the first exhaust pipe; the step of injecting a second hole sealing material into a second hole sealing space of the drill hole between the second elastic plug and the exhaust hole of the second exhaust pipe through the second hole sealing pipe specifically comprises the following steps: and injecting a second hole sealing material with a second preset volume into the second hole sealing space through the second hole sealing pipe, or injecting the second hole sealing material into the second hole sealing space through the second hole sealing pipe until the second hole sealing material flows down in the second exhaust pipe.
A first preset volume of a first hole sealing material injected into a first hole sealing space of the drilled hole through a first hole sealing pipe and a second preset volume of a second hole sealing material injected into a second hole sealing space of the drilled hole through a second hole sealing pipe can be determined according to the hole diameter of the drilled hole and the hole sealing length actually determined by engineering.
When hole sealing materials with preset volumes are injected into the drill hole, whether the hole sealing materials are continuously injected into the drill hole or not does not need to be judged; when the hole sealing device comprises the exhaust pipe, whether hole sealing materials are continuously injected into the drill hole is judged according to whether the hole sealing materials flow out of the first exhaust pipe and the second exhaust pipe; like this, can convenient and fast judge whether continue to pour into hole sealing material into in the drilling, under the closely knit prerequisite of guaranteeing the slip casting, can effectually prevent to pour into too much hole sealing material into in the drilling.
It should be noted that, in this document, the emphasis points of the solutions described in the embodiments are different, but there is a certain correlation between the embodiments, and in understanding the solution of the present invention, the embodiments may be referred to each other; moreover, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A hole sealing device for drilling a top plate of an underground space is characterized by comprising:
the hole sealing device comprises a hole sealing device body, a first connecting piece and a second connecting piece, wherein the hole sealing device body is of a cylindrical structure with openings at two ends, a material passing hole is formed in the wall of the hole sealing device body, the first end of the hole sealing device body is at least provided with the first connecting piece and the second connecting piece, and the second end of the hole sealing device body is at least provided with the third connecting piece and the fourth connecting piece;
the first elastic plug is arranged at the first end of the hole sealing device main body, at least a fifth connecting piece and a sixth connecting piece are arranged on the first elastic plug, and the fifth connecting piece and the sixth connecting piece are respectively matched and connected with the first connecting piece and the second connecting piece so as to fixedly connect the first elastic plug with the hole sealing device main body and seal the first opening;
the second elastic plug is arranged at the second end of the hole sealing device main body, at least a seventh connecting piece and an eighth connecting piece are arranged on the second elastic plug, and the seventh connecting piece and the eighth connecting piece are respectively matched and connected with the third connecting piece and the fourth connecting piece so as to fixedly connect the second elastic plug with the hole sealing device main body and seal the second opening;
the end part of the first hole sealing pipe penetrates through the first elastic plug and is positioned inside the hole sealing device main body and close to the first opening;
and the end part of the second hole sealing pipe penetrates through the second elastic plug and is positioned outside the hole sealing device main body and close to the second opening.
2. The device for sealing the roof hole of the underground space according to claim 1, further comprising a first exhaust pipe, wherein the end of the first exhaust pipe passes through the first elastic plug and is positioned inside the device body near the second opening;
and the end part of the second exhaust pipe penetrates through the first elastic plug and the second elastic plug respectively and is positioned at a preset position outside the hole sealing device main body.
3. The device for sealing the top plate hole of the underground space according to claim 2, further comprising a conical head, wherein the conical head is fixedly connected with the end part of the second exhaust pipe, which is positioned at the deep part of the hole;
when the end part of the second exhaust pipe is connected with the conical head, exhaust holes are formed in the second exhaust pipe and located below the conical head in the radial direction of the second exhaust pipe.
4. The apparatus for sealing a roof hole of an underground space according to claim 2, wherein the first exhaust pipe includes a first exhaust branch pipe and a second exhaust branch pipe, the first exhaust branch pipe being located in the second exhaust branch pipe; and/or
The second exhaust pipe includes a third exhaust branch pipe and a fourth exhaust branch pipe, the third exhaust branch pipe being located in the fourth exhaust branch pipe.
5. The apparatus for sealing a roof hole of an underground space according to claim 2 or 4, wherein a first filler is provided in each of the first exhaust pipe and the second exhaust pipe.
6. The apparatus for sealing a roof hole of an underground space according to claim 2, wherein an end of the second exhaust pipe located at the predetermined position has a first predetermined distance from an object of sealing in the roof hole of the underground space.
7. The apparatus of claim 2, wherein a second filler is provided between an end of the second exhaust pipe at the predetermined position and a sealing object in the roof hole of the underground space.
8. The hole sealing device for the roof hole of the underground space according to claim 2, wherein a first through hole, a second through hole, a third through hole and a fourth through hole are formed in the inner edge of the first elastic plug along the circumferential direction on the side of the fifth connecting member and the sixth connecting member near the center of the first elastic plug;
a fifth through hole and a sixth through hole are formed in the inner edge of the second elastic plug and on one sides, close to the center of the second elastic plug, of the seventh connecting piece and the eighth connecting piece along the circumferential direction;
the fifth through hole and the sixth through hole correspond to two of the first through hole, the second through hole, the third through hole and the fourth through hole, respectively.
9. A method for sealing a top plate borehole of an underground space, which is characterized by comprising the following steps:
cleaning the hole sealing section in the preset drill hole;
pushing the hole sealing object into a first preset position in the drill hole, or determining a first hole sealing position;
pushing a hole sealing device of a top plate drill hole of an underground space into a second preset position in the drill hole, wherein a second preset distance is arranged between the second preset position and the first preset position;
injecting a first hole sealing material into a first hole sealing space of the drill hole between the first elastic plug and the second elastic plug through a first hole sealing pipe, wherein the first hole sealing material fills the inside of the hole sealing device main body, and fills the space between the hole sealing device main body and the drill hole through a material passing hole in the cylinder wall of the hole sealing device main body;
and after the first hole sealing material in the first hole sealing space is hardened, injecting a second hole sealing material into a second hole sealing space of the drill hole between the second elastic plug and the exhaust hole of the second exhaust pipe through a second hole sealing pipe.
10. The method for sealing the roof hole of the underground space according to claim 9, wherein the step of injecting a first sealing material into the first sealing space of the borehole between the first elastic plug and the second elastic plug through the first sealing pipe comprises:
injecting a first predetermined volume of the first hole sealing material into the first hole sealing space through the first hole sealing pipe, or
Injecting the first hole sealing material into the first hole sealing space through the first hole sealing pipe until the first hole sealing material falls off in the first exhaust pipe;
through second hole sealing pipe to between the exhaust hole of second elasticity stopper and second blast pipe the second hole sealing material is injected into in the second hole sealing space of drilling, specifically include:
injecting a second predetermined volume of the second hole sealing material into the second hole sealing space through the second hole sealing pipe, or
And injecting the second hole sealing material into the second hole sealing space through the second hole sealing pipe until the second hole sealing material in the second exhaust pipe flows down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536715.3A CN114991699A (en) | 2022-05-17 | 2022-05-17 | Hole sealing device and method for underground space top plate drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536715.3A CN114991699A (en) | 2022-05-17 | 2022-05-17 | Hole sealing device and method for underground space top plate drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114991699A true CN114991699A (en) | 2022-09-02 |
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ID=83027624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210536715.3A Pending CN114991699A (en) | 2022-05-17 | 2022-05-17 | Hole sealing device and method for underground space top plate drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114991699A (en) |
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2022
- 2022-05-17 CN CN202210536715.3A patent/CN114991699A/en active Pending
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