A sealing device and method for drilling holes in the top plate of an underground space
By using a hole sealing device in the drilling of the top plate of the underground space, the first and second hole sealing pipes are used to inject the sealing material, combined with the elastic plug and exhaust pipe structure, the poor sealing effect caused by excessive grouting pressure is solved. The problem is that more efficient sealing effect and cost reduction are achieved.
Patent Information
- Application Number
- CN202210536715.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-05-17
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2042-05-17
AI Technical Summary
In the existing underground space roof drilling and sealing technology, excessive grouting pressure leads to poor sealing effect, complex process and high cost.
Using a hole sealing device, the hole sealing material is injected into the drilling hole through the first and second hole sealing pipes, forming the first and second hole sealing sections, and using the elastic plug and exhaust pipe structure to prevent the material from going outward due to excessive pressure. Move, enhance the sealing effect and reduce material costs.
It improves the sealing efficiency, enhances the closing effect of drilling, reduces construction costs, and simplifies the process flow.
Smart Images
Figure CN114991699B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of drilling plugging, and in particular to a device and method for plugging a drilling hole in a top plate of an underground space. Background Art
[0002] At present, when sealing the underground space top plate borehole, each mine generally adopts the "two blocking and one injection" sealing method. First, the borehole is sealed with a bag at both ends of the sealing section. The bag is filled with slurry or polyurethane. After the slurry or polyurethane in the bag is foamed, expanded and condensed, the sealing section is grouting. Under the action of grouting pressure, the slurry penetrates into the borehole wall and fills the cracks around the borehole to complete the sealing. In the process of sealing, the inventor found that at least there is a problem in the prior art that when the grouting pressure is too high, the bag near the shallow hole of the borehole will move out of the borehole due to the excessive pressure of the slurry on the bag, resulting in poor sealing effect of the borehole, and the sealing construction process is complicated and the cost is too high. Summary of the invention
[0003] In view of this, an embodiment of the present invention provides a sealing device and method for drilling holes in the top plate of an underground space, which improves the sealing efficiency and reduces the sealing cost based on the sealing effect of drilling holes in the top plate of an underground space.
[0004] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:
[0005] In a first aspect, an embodiment of the present invention provides a sealing device for drilling holes in the top plate of an underground space, comprising: a sealing device body, the sealing device body being a cylindrical structure with openings at both ends, a material passing hole being provided on the cylindrical wall of the sealing device body, at least a first connecting piece and a second connecting piece being provided at the first end of the sealing device body, and at least a third connecting piece and a fourth connecting piece being provided at the second end of the sealing device body; a first elastic plug, the first elastic plug being arranged at the first end of the sealing device body, at least a fifth connecting piece and a sixth connecting piece being provided on the first elastic plug, the fifth connecting piece and the sixth connecting piece being matched and connected with the first connecting piece and the second connecting piece respectively, so as to connect the first elastic plug with the The sealing device body is fixedly connected to block the first opening; a second elastic plug, the second elastic plug is arranged at the second end of the sealing device body, and 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 to fix the second elastic plug to the sealing device body to block the second opening; a first sealing tube, the end of the first sealing tube passes through the first elastic plug and is located inside the sealing device body near the first opening; a second sealing tube, the end of the second sealing tube passes through the second elastic plug and is located outside the sealing device body near the second opening.
[0006] According to a specific implementation method of an embodiment of the present invention, it also includes a first exhaust pipe, the end of which passes through the first elastic plug and is located inside the sealing device body near the second opening; and a second exhaust pipe, the end of which passes through the first elastic plug and the second elastic plug respectively and is located at a preset position outside the sealing device body.
[0007] According to a specific implementation method of an embodiment of the present invention, it also includes a conical head, which is fixedly connected to the end of the second exhaust pipe located in the deep part of the drilled hole; when the end of the second exhaust pipe is connected to the conical head, an exhaust hole is provided on the second exhaust pipe, below the conical head and along the radial direction of the second exhaust pipe.
[0008] According to a specific implementation of an embodiment of the present invention, the first exhaust pipe includes a first exhaust branch pipe and a second exhaust branch pipe, and the first exhaust branch pipe is 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, and the third exhaust branch pipe is located in the fourth exhaust branch pipe.
[0009] According to a specific implementation of the embodiment of the present invention, a first filler is provided in the first exhaust pipe and the second exhaust pipe respectively.
[0010] According to a specific implementation of the embodiment of the present invention, there is a first preset distance between the end of the second exhaust pipe located at the preset position and the sealing object in the hole drilled in the top plate of the underground space.
[0011] According to a specific implementation of the embodiment of the present invention, a second filler is provided between the end of the second exhaust pipe located at the preset position and the sealing object in the hole drilled in the top plate of the underground space.
[0012] According to a specific implementation method of an embodiment of the present invention, a first through hole, a second through hole, a third through hole and a fourth through hole are circumferentially provided on the inner edge of the first elastic plug, the fifth connecting member and the sixth connecting member are close to the center side of the first elastic plug; a fifth through hole and a sixth through hole are circumferentially provided on the inner edge of the second elastic plug, the seventh connecting member and the eighth connecting member are close to the center side of the second elastic plug; the fifth through hole and the sixth through hole respectively correspond to two through holes among the first through hole, the second through hole, the third through hole and the fourth through hole.
[0013] In a second aspect, an embodiment of the present invention provides a method for sealing a hole drilled in a top plate of an underground space, the method comprising: cleaning a sealing section in a preset borehole; pushing a sealing object into a first preset position in the borehole or determining a first sealing position; pushing a sealing device for a hole drilled in a top plate of an underground space into a second preset position in the borehole, a second preset distance being provided between the second preset position and the first preset position; injecting a first sealing material into a first sealing space of the borehole between a first elastic plug and a second elastic plug through a first sealing tube, wherein the first sealing material fills the interior of a sealing device body, and fills the space between the sealing device body and the borehole and the borehole pores through a feed hole on the cylinder wall of the sealing device body; after the first sealing material in the first sealing space hardens, injecting a second sealing material into a second sealing space of the borehole between the second elastic plug and the exhaust hole of a second exhaust pipe through a second sealing tube.
[0014] According to a specific implementation method of an embodiment of the present invention, injecting a first sealing material into a first sealing space of the drilled hole between a first elastic plug and a second elastic plug through a first sealing tube specifically includes: injecting a first preset volume of the first sealing material into the first sealing space through the first sealing tube, or injecting the first sealing material into the first sealing space through the first sealing tube until the first sealing material flows into the first exhaust pipe; injecting a second sealing material into a second sealing space of the drilled hole between the second elastic plug and the exhaust hole of the second exhaust pipe through a second sealing tube specifically includes: injecting a second preset volume of the second sealing material into the second sealing space through the second sealing tube, or injecting the second sealing material into the second sealing space through the second sealing tube until the second sealing material flows into the second exhaust pipe.
[0015] The sealing device and method for drilling holes on the top plate of underground space provided by the embodiment of the present invention injects sealing material into the first sealing space in the borehole through a first sealing tube to form a first sealing section, and injects sealing material into the second sealing space in the borehole through a second sealing tube to form a second sealing section. When using the above-mentioned sealing device to seal the borehole on the top plate of underground space, firstly inject the first sealing material into the first sealing space of the borehole to form the first sealing section, so that the main body of the sealing device in the first sealing space is tightly connected to the wall of the borehole, and then inject the second sealing material into the second sealing space of the borehole to form the second sealing section. In this way, the sealing device can be prevented from moving out of the borehole due to excessive pressure of the sealing material in the second sealing space on the sealing device, thereby enhancing the sealing effect of drilling holes on the top plate of underground space. In addition, compared with the use of bag expansion to seal the hole, which has higher requirements for the bag material, the present sealing device can reduce the sealing cost in terms of materials; compared with the use of bag sealing, which requires the use of water injection method to confirm whether the bag is damaged before sealing the hole, the present sealing device can improve the sealing efficiency by direct use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a structural schematic diagram of an embodiment of a sealing device for drilling a hole in the top plate of an underground space according to the present invention;
[0018] Figure 2 It is a structural schematic diagram of an embodiment of a sealing device for drilling a hole in a top plate of an underground space according to the present invention, located in a drilling hole;
[0019] Figure 3 A schematic structural diagram of an embodiment of a sealing device for drilling a hole in a top plate of an underground space with an exhaust pipe according to the present invention;
[0020] Figure 4 This is a schematic diagram of the structure of the sealing device for drilling a hole in the top plate of an underground space according to an embodiment of the present invention, with an exhaust pipe located in the drilling hole;
[0021] Figure 5 It is a structural schematic diagram of the device body of an embodiment of a sealing device for drilling a hole in the top plate of an underground space according to the present invention;
[0022] Figure 6 A schematic structural diagram of a second sealing tube equipped with a conical head in an embodiment of a sealing device for drilling a hole in a top plate of an underground space according to the present invention;
[0023] Figure 7 A schematic structural diagram of a first exhaust pipe with an exhaust pipe in an embodiment of a sealing device for drilling a hole in a top plate of an underground space according to the present invention;
[0024] Figure 8 A schematic structural diagram of a second exhaust pipe with an exhaust pipe according to an embodiment of a sealing device for drilling a hole in a top plate of an underground space according to the present invention;
[0025] Fig. 9 A schematic structural diagram of a first elastic plug with an exhaust pipe in an embodiment of a sealing device for drilling a hole in a top plate of an underground space according to the present invention;
[0026] Fig.10 A schematic structural diagram of a second elastic plug with an exhaust pipe in an embodiment of a sealing device for drilling a hole in a top plate of an underground space according to the present invention;
[0027] Fig.11 A schematic diagram of the structure of a first elastic plug of an embodiment of a sealing device for drilling a hole in a top plate of an underground space according to the present invention;
[0028] Fig.12 A schematic structural diagram of a second elastic plug in an embodiment of a sealing device for drilling a hole in a top plate of an underground space according to the present invention;
[0029] Fig.13 The present invention is a schematic flow chart of an embodiment of a method for sealing a hole drilled in an underground space top plate according to the present invention. DETAILED DESCRIPTION
[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0031] It should be clear that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] Embodiment 1
[0033] See also Figures 1 to 12 As shown, the sealing device for drilling holes in the top plate of an underground space provided by the embodiment of the present invention comprises: a sealing device body 10, the sealing device body 10 is a cylindrical structure with openings at both ends, a material passing hole (not shown in the figure) is provided on the cylindrical wall of the sealing device body, at least a first connecting member 11 and a second connecting member 12 are provided at the first end of the sealing device body 10, and at least a third connecting member 13 and a fourth connecting member 14 are provided at the second end of the sealing device body 10; a first elastic plug 20, the first elastic plug 20 is arranged at the first end of the sealing device body 10, at least a fifth connecting member 21 and a sixth connecting member 22 are provided on the first elastic plug 20, the fifth connecting member 21 and the sixth connecting member 22 are respectively matched and connected with the first connecting member 11 and the second connecting member 12, so as to connect the first elastic plug 20 with the sealing device The sealing device body 10 is fixedly connected to the sealing device body 10 to block the first opening 15; the second elastic plug 30, the second elastic plug 30 is arranged at the second end of the sealing device body 10, and at least a seventh connecting member 31 and an eighth connecting member 32 are provided on the second elastic plug 30, and the seventh connecting member 31 and the eighth connecting member 32 are respectively matched and connected with the third connecting member 13 and the fourth connecting member 14 to fix the second elastic plug 30 to the sealing device body 10 to block the second opening 16; the first sealing tube 40, the end of the first sealing tube 40 passes through the first elastic plug 20 and is located inside the sealing device body 10 near the first opening 15; the second sealing tube 50, the end of the second sealing tube 50 passes through the second elastic plug 30 and is located outside the sealing device body 10 near the second opening 16.
[0034] The drilling holes in the roof of underground space may refer to the drilling holes in the roof blastholes of underground tunnels, tunnels, etc. The openings at both ends of the sealing device body 10 may be circular, rectangular or prismatic, and the feeding holes may be circular, rectangular or cracks running through both ends. The shapes of the openings and feeding holes of the sealing device body 10 are not specifically limited here. The first sealing tube 40 and the second sealing tube 50 may respectively include a circular tube, a rectangular tube or a tube with a cross-section of other shapes. The material of the first sealing tube 40 and the second sealing tube 50 may be a material of the same material, such as polyvinyl chloride (PVC), polyethylene (PE), steel or a composite material, and the composite material may be an aluminum-plastic tube, a steel braided tube, etc. In one example, because the first sealing tube 40 is close to the hole mouth of the drill hole and is not easily damaged during the insertion process of the drill hole, and the mechanical property requirements are relatively low, the first sealing tube 40 adopts an ordinary transparent tube with an inner diameter of 4-30mm; because the second sealing tube 50 is located deep in the drill hole and is easily damaged during the insertion process of the drill hole, and the mechanical property requirements are relatively high, a high-pressure rubber hose or steel tube with an inner diameter of 5-30mm is used.
[0035] In one example, the second sealing tube 50 includes at least a shallow sealing tube and a deep sealing tube, and the at least two sealing tubes are connected by a quick connector, so as to facilitate pushing the second sealing tube 50 into a preset position of the borehole (e.g., the bottom of the borehole) and improve the efficiency of the connection between the shallow sealing tube and the deep sealing tube, thereby improving the efficiency of sealing the borehole. The deep sealing tube and the quick connector are made of PVC or steel, and the shallow sealing tube and the deep sealing tube together form a channel for injecting the second sealing material into the second sealing space of the borehole.
[0036] See also Figure 5 , Figures 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 located at both ends of the sealing device body 10 are arc-shaped connecting protrusions respectively; the fifth connecting member 21 and the sixth connecting member 22 of the first elastic plug 20 are arc-shaped connecting holes corresponding to the arc-shaped connecting protrusions respectively; the seventh connecting member 31 and the eighth connecting member 32 of the second elastic plug 30 are arc-shaped connecting holes corresponding to the arc-shaped connecting protrusions respectively; after the arc-shaped connecting protrusions at both ends of the sealing device body 10 are respectively inserted into the corresponding arc-shaped connecting holes, the above-mentioned arc-shaped connecting protrusions are fixedly connected to the corresponding arc-shaped connecting holes respectively by glue or tape with strong adhesion, so that the first elastic plug 20 and the second elastic plug 30 are respectively fixedly connected to the sealing device body 10.
[0037] The sealing device for drilling holes in the top plate of underground space provided by the embodiment of the present invention injects a first sealing material into the first sealing space of the borehole through a first sealing pipe 40 to form a first sealing section, and injects a second sealing material into the second sealing space of the borehole through a second sealing pipe 50 to form a second sealing section. When the above-mentioned sealing device is used to seal the borehole in the top plate of underground space, the first sealing material is firstly injected into the first sealing space of the borehole to form the first sealing section, so that the sealing device body 10 in the first sealing space is tightly connected to the borehole wall, and then the second sealing material is injected into the second sealing space of the borehole to form the second sealing section. In this way, the sealing device can be prevented from moving out of the borehole due to excessive pressure of the second sealing material in the second sealing space on the sealing device, and the cracks in the first sealing space are filled, and the second sealing space of the borehole is effectively sealed, so as to enhance the sealing effect of the borehole in the top plate of underground space. The first sealing material and the second sealing material can be slurries with fluidity, and further, the first sealing material and the second sealing material can be the same sealing material or different sealing materials. In one example, the first sealing material is Marisan, and the second sealing material is cement sealing material.
[0038] The volume of the corresponding sealing material injected into the borehole through the first sealing tube 40 and the second sealing tube 50 can be determined by calculation, and the exhaust pipe can also be used to determine when to stop injecting the corresponding sealing material into the borehole through the first sealing tube 40 and the second sealing tube 50. Figure 3 and Figure 4 In one embodiment, it also includes a first exhaust pipe 60, the end of which passes through the first elastic plug 20 and is located inside the sealing device body 10 near the second opening 16; a second exhaust pipe 70, the end of which passes through the first elastic plug 20 and the second elastic plug 30 respectively and is located at a preset position outside the sealing device body 10.
[0039] In one example, the second exhaust pipe 70 includes at least two exhaust pipes, which are connected by a quick connector 71, so as to facilitate pushing the second exhaust pipe 70 into a preset position of the borehole (e.g., the bottom of the borehole) and improve the efficiency of connecting the at least two exhaust pipes, 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 together form a channel for injecting the second sealing material into the second sealing space of the borehole.
[0040] See also Figure 4 The second exhaust pipe 70 is at a preset position outside the sealing device body 10, and is determined by the length of the sealing section formed by the sealing material injected into the drilled hole through the second sealing pipe 50 designed in the actual application scenario.
[0041] 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 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 inclined opening of the first exhaust pipe 60, and flow out of the borehole through the bottom of the first exhaust pipe 60, indicating that it is necessary to stop injecting the first sealing material into the borehole through the first sealing pipe 40. In another example, the top of the first exhaust pipe 60 is provided with a flush opening, and a gap is provided between the top of the first exhaust pipe 60 and the second elastic plug 30. In this way, 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, indicating that it is necessary to stop injecting the first sealing material into the borehole through the first sealing pipe 40.
[0042] In order to improve the efficiency of pushing the second exhaust pipe 70 into the drilled hole, see Figure 6 In one embodiment, it also includes a conical head 80, which is fixedly connected to the end of the second exhaust pipe 70 located in the deep part of the drilled hole; when the end of the second exhaust pipe 70 is connected to the conical head 80, an exhaust hole 90 is provided on the second exhaust pipe 70 and below the conical head 80 along the radial direction of the second exhaust pipe 70.
[0043] The radial dimension of the bottom of the conical head 80 is smaller than the diameter of the drilled hole. The exhaust hole 90 is a through hole, and a plurality of exhaust holes 90 can be provided on the second exhaust pipe 70 and below the conical head 80 along the radial direction of the second exhaust pipe 70 while ensuring the mechanical properties of the top of the second exhaust pipe 70.
[0044] The conical head 80 is used to improve the efficiency of pushing the second exhaust pipe 70 into the drilled hole. The exhaust hole 90 is used for when the second sealing material injected into the drilled hole through the second sealing pipe 50 reaches a preset position, the second sealing material can flow into the second exhaust pipe 70 through the exhaust hole 90 of the second exhaust pipe 70, and flow out of the drilled hole through the bottom of the second exhaust pipe 70, indicating that it is necessary to stop injecting the second sealing material into the drilled hole through the second sealing pipe 50.
[0045] In one example, an anti-retraction structure 110 is provided on the second exhaust pipe 70 connected to the conical head 80. The anti-retraction structure 110 is used to prevent the second exhaust pipe 70 connected to the conical head 80 from sliding downward during the process of pushing the second exhaust pipe 70 connected to the conical head 80 to the preset position in the drilled hole, thereby improving the efficiency of pushing the second exhaust pipe 70 connected to the conical head 80 to the preset position in the drilled hole.
[0046] See also Figure 6 In one embodiment, a first filler 100 is disposed in the first exhaust pipe 60 and the second exhaust pipe 70 , respectively.
[0047] The first filler 100 has adsorption holes, which can adsorb the sealing material. However, after the sealing material fills the adsorption holes, it can flow downward along the first filler 100 until it flows out from the bottom of the first exhaust pipe 60 or the second exhaust pipe 70. In one example, the first filler 100 is a sponge, cotton thread or rags.
[0048] When sealing material flows out from the bottom of the exhaust pipe, stop injecting sealing material into the borehole through the sealing pipe to complete the sealing of the borehole. At this time, the exhaust pipe is located in the borehole, and the exhaust pipe is a hollow pipe, which is a sealing defect. Taking the borehole in the blasting operation as an example, if the exhaust pipe is a hollow pipe, part of the energy generated by the blasting will overflow from the exhaust pipe, affecting the blasting effect and possibly causing a production safety accident. By placing the first filler 100 in the first exhaust pipe 60 and the second exhaust pipe 70, the first exhaust pipe 60 and the second exhaust pipe 70 can have sealing material in the first exhaust pipe 60 and the second exhaust pipe 70 while judging whether to continue to inject sealing material into the borehole through the first exhaust pipe 60 and the second exhaust pipe 70, so that the grouting in the borehole is dense, which can enhance the sealing effect of the underground space top plate drilling.
[0049] See also Figure 7 and Figure 8 In one 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 includes a third exhaust branch pipe 72 and a fourth exhaust branch pipe 73, and the third exhaust branch pipe 72 is located in the fourth exhaust branch pipe 73.
[0050] Therein, the first exhaust branch pipe 61 may include a plurality of them, all of which are located in the second exhaust branch pipe 62 ; the third exhaust branch pipe 72 may include a plurality of them, all of which are located in the fourth exhaust branch pipe 73 .
[0051] The first exhaust pipe 60 and the second exhaust pipe 70 are both located in the borehole and are hollow pipes. Therefore, the volume of the first exhaust pipe 60 and the second exhaust pipe 70 located in the borehole is a sealing defect. The diameter of the first exhaust pipe 60 and the second exhaust pipe 70 should be as small as possible under the premise that the sealing material can flow in the first exhaust pipe 60 and the second exhaust pipe 70. Here, the diameter of the first exhaust pipe 60 and the second exhaust pipe 70 can be determined according to the actual project. It can be understood that there are cracks, bulges and other factors in the borehole that are not conducive to 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 with a smaller diameter may be damaged in the process of advancing deep into the borehole. In this embodiment, by setting the first exhaust branch pipe 61 to meet the flow requirements of the sealing material, and the second exhaust branch pipe 62 to meet the requirements of advancing deep into the borehole, it can be ensured that the first exhaust pipe 60 and the second exhaust pipe 70 can be advanced to the designed position and the first exhaust pipe 60 and the second exhaust pipe 70 can play their roles normally. The third exhaust branch pipe 72 and the fourth exhaust branch pipe 73 have the same functions as above. A baffle may be provided at a preset position of the second exhaust branch pipe 62, and the baffle is fixedly connected to the inner wall of the second exhaust branch pipe 62 to prevent the sealing material from flowing out; a baffle may be provided at a preset position of the fourth exhaust branch pipe 73, and the baffle is fixedly connected to the inner wall of the fourth exhaust branch pipe 73 to prevent the sealing material from flowing out.
[0052] In order to prevent the sealing material injected into the second sealing space of the drilled hole through the second sealing tube 50 from causing negative impact on the sealing object 120, see Figure 2 and Figure 4 In one embodiment, there is a first preset distance between the end of the second exhaust pipe 70 located at the preset position and the sealing object 120 in the borehole on the top plate of the underground space.
[0053] The sealing material injected into the borehole through the second sealing tube 50 is a wet sealing material. The sealing object 120 can be an explosive or a pipeline. When the sealing object 120 is an explosive, if the sealing material contacts the explosive, part of the explosive will not explode, affecting the blasting effect. When the sealing object 120 is a pipeline, if the sealing material contacts the pipeline, the pipeline will fail and affect the normal operation of the pipeline. By setting a first preset distance between the second exhaust pipe 70 and the sealing object 120, the sealing material injected into the borehole through the second sealing tube 50 can be prevented from contacting the sealing object 120, thereby avoiding the sealing material injected into the borehole through the second sealing tube 50 from having a negative impact on the sealing object 120.
[0054] In one embodiment, a second filler (not shown in the figure) is provided between the end of the second exhaust pipe 70 located at the preset position and the sealing object 120 in the hole drilled in the ceiling of the underground space.
[0055] The second filler may be a rubber plug, a plastic plug or a steel sheet. The second filler is used to generate pressure on the sealing material injected into the borehole through the second sealing tube 50, further preventing the sealing material injected into the borehole through the second sealing tube 50 from contacting the sealing object 120, thereby avoiding the sealing material injected into the borehole through the second sealing tube 50 from causing negative impact on the sealing object 120.
[0056] See also Figures 9 to 12 In order to make the first sealing tube 40, the second sealing tube 50, the first exhaust pipe 60 and the second exhaust pipe 70 close to the borehole wall respectively, in one embodiment, on the inner edge of the first elastic plug 20, the fifth connecting member 21 and the sixth connecting member 22 are circumferentially provided with a first through hole 23, a second through hole 24, a third through hole 25 and a fourth through hole 26 close to the center of the first elastic plug 20; on the inner edge of the second elastic plug 30, the seventh connecting member 31 and the eighth connecting member 32 are circumferentially provided with a fifth through hole 33 and a sixth through hole 34 close to the center of the second elastic plug 30; the fifth through hole 33 and the sixth through hole 34 correspond to two through holes among the first through hole 23, the second through hole 24, the third through hole 25 and the fourth through hole 26 respectively.
[0057] 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 sealing tube 40 passes through the first through hole 23 and is located inside the sealing device body 10 near the first opening 15, and is fixedly connected to the first elastic plug 20 by glue or tape with strong adhesion. The first exhaust pipe 60 passes through the second through hole 24 and is located inside the sealing device body 10 near the second opening 16, and is fixedly connected to the first elastic plug 20 by glue or tape with strong adhesion. The second sealing tube 50 passes through the third through hole 25 and the fifth through hole 33 and is located outside the sealing device body 10 near the second opening 16, and is fixedly connected to the first elastic plug 20 and the second elastic plug 30 respectively by glue or tape with strong adhesion. The second exhaust pipe 70 passes through the fourth through hole 26 and the sixth through hole 34 and is located at a preset position in the drilled hole outside the sealing device body 10, and is fixedly connected to the first elastic plug 20 and the second elastic plug 30 respectively by glue or tape with strong adhesion. By arranging the first through hole 23, the second through hole 24, the third through hole 25 and the fourth through hole 26 on the inner edge of the first elastic plug 20, the first sealing tube 40, the first exhaust pipe 60, the second sealing tube 50 and the second exhaust pipe 70 can be respectively located on the inner edge of the first elastic plug 20, so that the first sealing tube 40, the second sealing tube 50, the first exhaust pipe 60 and the second exhaust pipe 70 are respectively close to the borehole wall, so as to reduce the influence of the first sealing tube 40, the second sealing tube 50, the first exhaust pipe 60 and the second exhaust pipe 70 remaining in the borehole on subsequent projects.
[0058] Embodiment 2
[0059] See also Fig.13 The embodiment of the present invention provides a method for sealing a hole drilled in an underground space top plate, the method comprising:
[0060] S100, performing hole cleaning on the sealed hole section in the preset borehole. For example, the hole cleaning is performed on the sealed hole section in the borehole by using an air pump or a water pump.
[0061] S102, pushing the sealing object into the first preset position in the borehole, or determining the first sealing position, that is, the method can be used to seal a borehole with a sealing object (such as explosives), or can be used to seal only the borehole. The first preset position or the first sealing position is determined according to the actual project.
[0062] S104, push the sealing device of the underground space top plate drilled hole into the second preset position in the drilled hole, and a second preset distance is set 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 project. For example, the first sealing space and the second sealing space are determined according to the total length of the sealing hole and the pressure generated when the sealing material reaches the preset position, thereby determining the second preset distance; the second preset distance is determined according to the grouting pressure and the sealing object.
[0063] S106. Inject a first sealing material into a first sealing space of the drilled hole between the first elastic plug and the second elastic plug through a first sealing tube, wherein the sealing material fills the interior of the sealing device body and fills the space between the sealing device body and the drilled hole and the drilled hole pores through the feed holes on the cylinder wall of the sealing device body, thereby ensuring the density of the first sealing space and improving the sealing effect.
[0064] S108, after the first sealing material in the first sealing space is hardened, the second sealing material is injected into the second sealing space of the drilled hole between the second elastic plug and the exhaust hole of the second exhaust pipe through the second sealing tube. The first sealing material in the first sealing space can be left to stand for a preset time to ensure hardening, and the preset time can be determined according to actual engineering practice.
[0065] The first sealing material injected into the first sealing space through the first sealing tube and the second sealing material injected into the second sealing space through the second sealing tube may be the same sealing material or different sealing materials.
[0066] The sealing method for a hole drilled in the top plate of an underground space provided in an embodiment of the present invention injects a first sealing material into the first sealing space of the hole drilled through a first sealing tube. After standing for a preset time, a first sealing section can be formed. At this time, during the process of injecting a second sealing material into the second sealing space of the hole drilled through a second sealing tube, the first sealing section can generate an upward pressure on the injected second sealing material to offset the pressure of the second sealing material on the sealing device. In this way, the sealing device can be prevented from moving out of the hole drilled due to excessive pressure of the sealing material on the sealing device. At the same time, all cracks in the first sealing space are filled and the second sealing space is sealed, thereby enhancing the sealing effect of the hole drilled in the top plate of the underground space.
[0067] In order to prevent excessive sealing material from being injected into the drilled hole, in one embodiment, the first sealing material is injected into the first sealing space of the drilled hole between the first elastic plug and the second elastic plug through the first sealing tube, specifically including: injecting a preset volume of the first sealing material into the first sealing space through the first sealing tube, or injecting the first sealing material into the first sealing space through the first sealing tube until the first sealing material flows into the first exhaust pipe; the second sealing material is injected into the second sealing space of the drilled hole between the second elastic plug and the exhaust hole of the second exhaust pipe through the second sealing tube, specifically including: injecting a second preset volume of the second sealing material into the second sealing space through the second sealing tube, or injecting the second sealing material into the second sealing space through the second sealing tube until the second sealing material flows into the second exhaust pipe.
[0068] The first preset volume of the first sealing material injected into the first sealing space of the borehole through the first sealing tube and the second preset volume of the second sealing material injected into the second sealing space of the borehole through the second sealing tube can be determined by the borehole diameter and the sealing length determined according to actual engineering.
[0069] When a preset volume of sealing material is injected into the borehole, there is no need to determine whether to continue injecting the sealing material into the borehole; when the above-mentioned sealing device includes an exhaust pipe, whether to continue injecting the sealing material into the borehole is determined by whether sealing material flows out of the first exhaust pipe and the second exhaust pipe; in this way, it is possible to conveniently and quickly determine whether to continue injecting the sealing material into the borehole, and under the premise of ensuring dense grouting, it is possible to effectively prevent excessive sealing material from being injected into the borehole.
[0070] It should be noted that, in this article, the emphasis of the scheme described in each embodiment is different, but each embodiment has a certain interrelated relationship. When understanding the scheme of the present invention, each embodiment can refer to each other; in addition, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0071] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims
1. A sealing device for drilling holes in the top plate of an underground space, It is characterized in that include: The sealing device body is a cylindrical structure with openings at both ends, the openings include a first opening arranged at one end and a second opening arranged at the other end, a material passing hole is arranged on the cylinder wall of the sealing device body, at least a first connecting piece and a second connecting piece are arranged at the first end of the sealing device body, and at least a third connecting piece and a fourth connecting piece are arranged at the second end of the sealing device body; a first elastic plug, the first elastic plug being arranged at the first end of the sealing device body, the first elastic plug being provided with at least a fifth connecting member and a sixth connecting member, the fifth connecting member and the sixth connecting member being matched and connected with the first connecting member and the second connecting member respectively, so as to fix the first elastic plug with the sealing device body and seal the first opening; a second elastic plug, the second elastic plug being arranged at the second end of the sealing device body, the second elastic plug being provided with at least a seventh connecting member and an eighth connecting member, the seventh connecting member and the eighth connecting member being matched and connected with the third connecting member and the fourth connecting member respectively, so as to fix the second elastic plug with the sealing device body and block the second opening; A first sealing tube, the end of which passes through the first elastic plug and is located inside the sealing device body near the first opening; A second sealing tube, the end of which passes through the second elastic plug and is located outside the sealing device body near the second opening; It also includes a first exhaust pipe, the end of which passes through the first elastic plug and is located inside the sealing device body near the second opening; a second exhaust pipe, the ends of which pass through the first elastic plug and the second elastic plug respectively and are located at a preset position outside the main body of the sealing device; It also includes a conical head, which is fixedly connected to the end of the second exhaust pipe located at the deep part of the top plate drilling hole; When the end of the second exhaust pipe is connected to the conical head, an exhaust hole is provided on the second exhaust pipe below the conical head along the radial direction of the second exhaust pipe.
2. The sealing device for drilling holes in the top plate of an underground space according to claim 1, It is characterized in that The first exhaust pipe comprises a first exhaust branch pipe and a second exhaust branch pipe, the first exhaust branch pipe is located inside the second exhaust branch pipe; and / or The second exhaust pipe includes a third exhaust branch pipe and a fourth exhaust branch pipe, and the third exhaust branch pipe is located inside the fourth exhaust branch pipe.
3. The sealing device for drilling holes in the top plate of an underground space according to claim 1 or 2, It is characterized in that A first filler is disposed in the first exhaust pipe and the second exhaust pipe, respectively.
4. The sealing device for drilling holes in the top plate of an underground space according to claim 1, It is characterized in that There is a first preset distance between the end of the second exhaust pipe located at the preset position and the sealing object in the hole drilled in the top plate of the underground space.
5. The sealing device for drilling holes in the top plate of an underground space according to claim 1, It is characterized in that A second filler is provided between the end of the second exhaust pipe located at the preset position and the sealing object in the hole drilled in the ceiling of the underground space.
6. The sealing device for drilling holes in the top plate of an underground space according to claim 1, It is characterized in that A first through hole, a second through hole, a third through hole and a fourth through hole are circumferentially provided on the inner edge of the first elastic plug and on one side of the fifth connecting member and the sixth connecting member close to the center of the first elastic plug; A fifth through hole and a sixth through hole are circumferentially provided on the inner edge of the second elastic plug and on one side of the seventh connecting member and the eighth connecting member close to the center of the second elastic plug; The fifth through hole and the sixth through hole correspond to two through holes among the first through hole, the second through hole, the third through hole and the fourth through hole, respectively.
7. A method for sealing a hole drilled in the top plate of an underground space, It is characterized in that Based on the sealing device for drilling holes in the top plate of an underground space according to any one of claims 1 to 6, the method comprises: Carry out hole cleaning treatment on the sealing section in the preset top plate drilling hole; Pushing the sealing object into the first preset position in the top plate drilled hole, or determining a first sealing position; Pushing a sealing device for a hole drilled in a top plate of an underground space into a second preset position in the hole drilled in the top plate, wherein a second preset distance is set between the second preset position and the first preset position; A first sealing material is injected into the first sealing space of the top plate drilling hole between the first elastic plug and the second elastic plug through the first sealing tube, wherein the first sealing material fills the inside of the sealing device body and fills the space between the sealing device body and the top plate drilling hole and the top plate drilling hole through the material passing hole on the cylinder wall of the sealing device body; After the first sealing material in the first sealing space is hardened, a second sealing material is injected into the second sealing space drilled in the top plate between the second elastic plug and the exhaust hole of the second exhaust pipe through a second sealing tube.
8. The sealing method for drilling holes in the top plate of an underground space according to claim 7, It is characterized in that Injecting a first sealing material into a first sealing space of the top plate drilled hole between the first elastic plug and the second elastic plug through a first sealing tube specifically includes: injecting a first preset volume of the first sealing material into the first sealing space through the first sealing tube, or injecting the first sealing material into the first sealing space through the first sealing pipe until the first sealing material flows into the first exhaust pipe; The step of injecting the second sealing material into the second sealing space drilled in the top plate between the second elastic plug and the exhaust hole of the second exhaust pipe through the second sealing tube specifically includes: injecting a second preset volume of the second sealing material into the second sealing space through the second sealing tube, or The second sealing material is injected into the second sealing space through the second sealing pipe until the second sealing material flows into the second exhaust pipe.