CN213748127U - A enhancement mode hole sealing structure that is used for static gas explosion broken rock along layer hole - Google Patents
A enhancement mode hole sealing structure that is used for static gas explosion broken rock along layer hole Download PDFInfo
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- CN213748127U CN213748127U CN202022557292.2U CN202022557292U CN213748127U CN 213748127 U CN213748127 U CN 213748127U CN 202022557292 U CN202022557292 U CN 202022557292U CN 213748127 U CN213748127 U CN 213748127U
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Abstract
The utility model discloses an enhanced hole sealing structure for static gas explosion rock-breaking bedding hole, which comprises a rock-breaking drill hole (1) for bedding hole drilling, and a grouting inclined hole (2) obliquely runs through the middle part of the rock-breaking drill hole (1) and then enters the rock again; the rock breaking drill hole (1) is internally provided with a front sealing plug (3) and a rear sealing plug (4), a sealing material (5) is filled between the front sealing plug (3) and the rear sealing plug (4), and after the sealing material (5) is filled, a ribbed steel bar (6) penetrates into the grouting inclined hole (2). The utility model discloses can fine solution in the same direction as the shutoff problem of layer drilling, shutoff intensity is higher moreover, can be adapted to the higher rock mass of intensity.
Description
Technical Field
The utility model belongs to the technical field of static gas blasting rock, concretely relates to an enhancement mode hole sealing structure that is used for static gas blasting rock in same direction as layer hole.
Background
In mine engineering, tunnel engineering, road engineering and municipal engineering, more rock mass breaking works exist, and due to the reasons of small volume, strict explosive management and control, sensitive surrounding environment and the like, many projects cannot adopt an explosive blasting method to break rock masses. The mechanical rock breaking commonly adopted at present, such as rock drills, pick heads and the like, has strong environmental applicability and flexibility, but the efficiency of the mechanical rock breaking is greatly influenced by the strength and the integrity of rock masses. When the rock mass is high in strength and good in integrity, the mechanical rock breaking mode is low in efficiency, noise pollution is serious, and serious interference is generated to the life of surrounding residents.
More and more engineering projects in recent yearsBy using CO2The static blasting technology is used for rock mass breaking operation, but some operations illegally use forbidden products (containing explosive components) and personnel operation is not standard, so that certain risks are brought to safety, such as punching flying pipes, high-pressure gas filling, use of forbidden products and the like. In parts of China, the plaintext prohibits the use of liquid CO2Blasting technology. In order to overcome the original liquid CO2The defects of the blasting technology are that an intrinsic safety type carbon dioxide energy gathering agent and a fracturing device are developed. Mixing liquid CO2Solid dry ice powder is replaced, so that physical explosive risks in the filling, storing and transporting processes of high-pressure gas are avoided. Mixing liquid CO2The heating agent used in the blasting technology is replaced by an intrinsic safety type carbon dioxide energy-gathering agent (SMA-55), and the energy-gathering agent is identified by an authority and is a non-limiting transportation product without explosiveness and flammability danger. The dry ice energy-gathering agent static rock breaking technology needs to plug a drilled hole, and the requirement on hole sealing quality is high. The improper hole sealing easily causes the hole punching, and the danger is very big. At present, hole sealing is difficult, and especially bedding drilling is difficult, so that a hole sealing method which is convenient to operate and high in reliability is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the hole sealing difficult problem of following layer drilling in the broken rock of static gas explosion, provide an enhancement mode hole sealing structure that is used for the broken rock of static gas explosion in the same direction as layer hole, can fine solution the shutoff problem of following layer drilling, the shutoff intensity is higher moreover, can be adapted to the higher rock mass of intensity.
In order to solve the technical problem, the utility model discloses a technical scheme does:
an enhanced hole sealing structure for static gas explosion rock breaking bedding holes comprises a rock breaking drill hole for bedding hole drilling, wherein a grouting inclined hole obliquely penetrates through the middle of the rock breaking drill hole and then enters the rock again, namely the hole top of the grouting inclined hole enters the rock and extends to a position right above an orifice of the rock breaking drill hole, and the hole bottom of the grouting inclined hole enters the rock; the rock breaking drill hole is internally provided with a front plugging plug and a rear plugging plug, plugging materials are filled between the front plugging plug and the rear plugging plug, and after the plugging materials are filled, ribbed steel bars penetrate into the grouting inclined holes.
The diameter of the rock breaking drill hole is 108-115 mm; the inclination angle of the rock breaking drill hole is 0-5 degrees, the orifice of the rock breaking drill hole is higher than the bottom of the hole or the rock breaking drill hole is arranged in parallel to the horizontal plane; the hole depth of the rock breaking drill hole is 1-3 m.
The diameter of the grouting inclined hole is 26-43 mm; the inclined angle of the grouting inclined hole is 30-75 degrees, and the orifice of the grouting inclined hole is higher than the bottom of the hole.
The bottom of the grouting inclined hole is at least 100mm into rock; the horizontal distance between the grouting inclined hole penetrating position of the rock breaking drill hole and the orifice of the rock breaking drill hole is at least 300 mm.
The front plugging plug and the rear plugging plug are both made of soft materials dipped with polyurethane materials, and are respectively plugged into the middle part and the hole of the rock breaking drill hole after being kneaded.
The soft material comprises a woven bag, cloth or cotton; the polyurethane material is a double-component polyurethane sealant.
The plugging material comprises a mixed grouting material of water glass grout B and cement grout A, quick-setting cement or a quick-setting grouting material.
The ribbed bar comprises a rebar or an anchor.
An enhanced hole sealing method for static gas blasting rock bedding hole comprises the following steps:
s1, rock breaking and drilling construction: adopting a down-the-hole drill to drill a broken rock drill hole, wherein the diameter of the broken rock drill hole is larger than that of the fracturing cylinder, and water cannot exist in the broken rock drill hole;
s2, grouting inclined holes: drilling a hole right above the rock breaking drill hole by using a handheld anchor rod drilling machine, and drilling a distance after a drill bit of the handheld anchor rod drilling machine penetrates through the rock breaking drill hole;
s3, lowering a fracturing device C: placing the prepared fracturing device C at the bottom of the rock breaking drill hole, and enabling a pipeline of the fracturing device C to leak out of an orifice of the rock breaking drill hole;
s4, plugging the rock breaking drill hole by adopting a front plugging plug and a rear plugging plug: before plugging, a soft material is firstly immersed into a liquid polyurethane material, then the soft material is quickly kneaded into a cluster and then is plugged into a rock breaking drill hole, the front plugging plug tightly abuts against a cracking device C, the rear plugging plug is close to an orifice of the rock breaking drill hole, and finally a ribbed steel bar is inserted into a grouting inclined hole;
s5, injecting a plugging material for plugging: preparing a plugging material into slurry with fluidity, pulling out the ribbed steel bar, and injecting the plugging material into the grouting inclined hole by using grouting equipment, wherein the plugging material needs to be filled into the grouting inclined hole without pressure;
s6, inserting ribbed steel bars: and after grouting plugging, immediately inserting the ribbed steel bars into the grouting inclined holes, and inserting the ribbed steel bars into the hole bottoms of the grouting inclined holes.
The plugging material is a mixed grouting material of water glass slurry and cement slurry, and the water glass slurry B and the cement slurry A are mixed according to the weight ratio of (0.25-0.5): 1, and mixing and injecting.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the drill hole has high plugging strength and is suitable for high-strength rock masses: the hole is sealed by the combination of the high-strength hole sealing material and the large-diameter steel bar, so that the strength and the shock resistance of a hole sealing section can be obviously improved, and the occurrence of punching can be effectively avoided.
2. Being suitable for plugging bedding holes: the bedding hole can not be directly plugged by using grout, the method can well plug the bedding hole by means of the high position of the grouting inclined hole and soft materials, and the used materials are good in economy and easy to obtain.
3. The operation is simple, the requirement on construction equipment is low: the structure is simple, the short small-diameter inclined hole is added, the requirement on construction equipment is low, and the operation is simple; the hole sealing section can directly adopt a grouting method, the operation is simple, and the hole sealing quality is ensured.
4. Good economical efficiency: the conventional hole sealing material is adopted, the price is low, customization is not needed, the hole sealing cost is greatly reduced, and the adopted ribbed steel bar is low in price and easy to obtain materials.
Drawings
Fig. 1 is a schematic structural view of the present invention;
figure 2 is the utility model discloses a slip casting shutoff sketch map.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, an enhanced hole sealing structure for static gas blasting rock bedding hole comprises a rock breaking drill hole 1, a grouting inclined hole 2, a front sealing plug 3, a rear sealing plug 4, a sealing material 5 and a ribbed steel bar 6.
Specifically, the rock breaking drill hole 1 is a bedding drill hole, the grouting inclined hole 2 obliquely penetrates through the middle part of the rock breaking drill hole 1, and the grouting inclined hole 2 penetrates through the rock breaking drill hole 1 and then enters the rock again for 200 mm; the rock breaking drill hole 1 is internally provided with a front plugging plug 3 and a rear plugging plug 4, plugging materials 5 are filled between the front plugging plug 3 and the rear plugging plug 4, and after the plugging materials 5 are filled, ribbed steel bars 6 penetrate into the grouting inclined holes 2.
The rock breaking drill hole 1 is a large-diameter drill hole, and the diameter of the drill hole is 115 mm; drilling holes along the layer, wherein the inclination angle of the drilled holes is generally 5 degrees, and the bottom of each hole is slightly lower than the corresponding hole opening; the hole depth was 1.8 m.
The grouting inclined hole 2 is a small-diameter drill hole, and the diameter of the drill hole is generally 43 mm; the inclination angle of the drill hole is generally 60 degrees, and the horizontal distance between the penetration position of the grouting inclined hole 2 of the rock breaking drill hole 1 and the hole opening of the rock breaking drill hole 1 is 300 mm; and (3) obliquely penetrating the rock breaking drill hole 1 by the grouting drill hole 2, and enabling the bottom of the hole to enter the rock again by 200 mm.
The front plugging plug 3 and the rear plugging plug 4 are woven bags dipped with polyurethane original liquid materials, the woven bags are directly plugged into the drilled hole and the hole after being kneaded, and the polyurethane two liquids are mixed and then cured for plugging. When the polyurethane is solidified, a plunger body is formed. The two-component polyurethane sealant comprises two liquids of polyurethane, and the liquid polyurethane is easy to carry.
The plugging material 5 is a plugging material which can be rapidly solidified and has higher strength after solidification, and has better fluidity during grouting. The cement is adopted as the grout A and the water glass is adopted as the grout B. Mixing water glass slurry and cement slurry according to the weight ratio of 0.25: 1, and stopping injecting when the grouting inclined hole 2 emits grouting.
The ribbed steel bars 6 are 38mm deformed steel bars commonly used in buildings, the ribbed steel bars 6 are inserted into the grouting inclined holes 2 after grouting, and the impact resistance of the rock breaking drill holes 1 is enhanced by means of the shearing resistance of the ribbed steel bars 6.
As shown in fig. 2, an enhanced sealing method for static gas blasting rock bedding hole includes the following steps:
s1, rock breaking and drilling 1 construction:
drilling with a down-the-hole drill to obtain a hole with the diameter of 115mm and the depth of 1.8m, wherein the drill hole can not contain water;
s2, grouting the inclined hole 2:
drilling a hole at a position which is not less than 30cm above the rock breaking drill hole 1 by using a handheld anchor rod drilling machine, wherein the inclination angle of the drill hole is 60 degrees, and drilling the rock breaking drill hole 1 by 20 cm;
s3, lowering a fracturing device C:
placing the prepared fracturing device C at the bottom of the 1 hole of the rock breaking drill hole, and enabling a pipeline to leak out of the hole opening;
s4, plugging the broken rock drill hole 1 by adopting a front plug 3 and a rear plug 4:
before plugging, firstly, a woven bag is immersed into a liquid polyurethane material, then the woven bag is quickly kneaded into a cluster and then is plugged into a hole, a front plugging plug 3 tightly props against a fracturing device C, a rear plugging plug 4 is close to the hole opening of a rock breaking drill hole 1 but cannot plug a grouting inclined hole 2, and finally, a ribbed steel bar 6 is inserted into the grouting inclined hole 2;
s5, grouting and plugging:
preparing cement grout (grout A) and water glass (grout B), pulling out the ribbed steel bars 6, and directly injecting the grouting inclined holes 2 by using grouting equipment, wherein the grouting inclined holes 2 need to be filled;
s6, inserting the ribbed steel bar 6:
after grouting plugging, the ribbed steel bars 6 are inserted into the grouting inclined holes 2 immediately, and the ribbed steel bars 6 are required to be inserted into the bottoms of the grouting inclined holes 2, so that certain impact resistance can be provided for the rock breaking drill holes 1.
Example 2:
this example differs from example 1 only in that:
the diameter of the rock breaking drill hole 1 is 108mm, the inclination angle of the rock breaking drill hole 1 is 0 degree, and the hole depth of the rock breaking drill hole 1 is 1 m.
The diameter of the grouting inclined hole 2 is 26mm, the inclination angle of the grouting inclined hole 2 is 30 degrees, the hole bottom of the grouting inclined hole 2 is 100mm into the rock, and the horizontal distance between the penetration position of the grouting inclined hole 2 of the rock breaking drill hole 1 and the hole opening of the rock breaking drill hole 1 is 350 mm.
The soft material is cloth.
The plugging material 5 is quick-drying cement.
Example 3
This example differs from example 1 only in that:
the diameter of the rock breaking drill hole 1 is 110mm, the inclination angle of the rock breaking drill hole 1 is 2 degrees, and the hole depth of the rock breaking drill hole 1 is 3 m.
The diameter of the grouting inclined hole 2 is 35mm, the inclination angle of the grouting inclined hole 2 is 75 degrees, the hole bottom of the grouting inclined hole 2 is 300mm into rock, and the horizontal distance between the penetration position of the grouting inclined hole 2 of the rock breaking drill hole 1 and the hole opening of the rock breaking drill hole 1 is 400 mm.
The soft material is cotton.
The plugging material 5 is an existing quick-setting grouting material.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as described herein. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The disclosure of the present invention is intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (7)
1. The utility model provides an enhancement mode hole sealing structure that is used for static gas explosion broken rock along with layer hole which characterized in that: the method comprises a rock breaking drill hole (1) for bedding drilling, wherein a grouting inclined hole (2) penetrates through the middle part of the rock breaking drill hole (1) in an inclined mode and then enters the rock again; the rock breaking drill hole (1) is internally provided with a front sealing plug (3) and a rear sealing plug (4), a sealing material (5) is filled between the front sealing plug (3) and the rear sealing plug (4), and after the sealing material (5) is filled, a ribbed steel bar (6) penetrates into the grouting inclined hole (2).
2. The enhanced hole sealing structure for static gas blasting rock bedding hole according to claim 1, characterized in that: the diameter of the rock breaking drill hole (1) is 108-115 mm; the inclination angle of the rock breaking drill hole (1) is 0-5 degrees, the orifice of the rock breaking drill hole (1) is higher than the hole bottom, or the rock breaking drill hole (1) is arranged in parallel to the horizontal plane; the depth of the rock breaking drill hole (1) is 1-3 m.
3. The enhanced hole sealing structure for static gas blasting rock bedding hole according to claim 1, characterized in that: the diameter of the grouting inclined hole (2) is 26-43 mm; the inclined angle of the grouting inclined hole (2) is 30-75 degrees, and the hole opening of the grouting inclined hole (2) is higher than the hole bottom.
4. The enhanced hole sealing structure for static gas blasting rock bedding hole according to claim 1, characterized in that: the bottom of the grouting inclined hole (2) is at least 100mm into rock; the horizontal distance between the penetration position of the grouting inclined hole (2) of the rock breaking drill hole (1) and the orifice of the rock breaking drill hole (1) is at least 300 mm.
5. The enhanced hole sealing structure for static gas blasting rock bedding hole according to claim 1, characterized in that: preceding shutoff stopper (3) and back shutoff stopper (4) are the software material that has dipped in the polyurethane material, fill in respectively behind preceding shutoff stopper (3) and the back shutoff stopper (4) kneading the middle part and the orifice department of broken rock drilling (1).
6. The enhanced hole sealing structure for static gas blasting rock bedding hole according to claim 5, characterized in that: the soft material comprises a woven bag, cloth or cotton; the polyurethane material is a double-component polyurethane sealant.
7. The enhanced hole sealing structure for static gas blasting rock bedding hole according to claim 1, characterized in that: the ribbed steel bar (6) comprises a threaded steel bar or an anchor rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022557292.2U CN213748127U (en) | 2020-11-06 | 2020-11-06 | A enhancement mode hole sealing structure that is used for static gas explosion broken rock along layer hole |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022557292.2U CN213748127U (en) | 2020-11-06 | 2020-11-06 | A enhancement mode hole sealing structure that is used for static gas explosion broken rock along layer hole |
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| CN213748127U true CN213748127U (en) | 2021-07-20 |
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| CN202022557292.2U Active CN213748127U (en) | 2020-11-06 | 2020-11-06 | A enhancement mode hole sealing structure that is used for static gas explosion broken rock along layer hole |
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