KR101633505B1 - The support material - Google Patents

The support material Download PDF

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Publication number
KR101633505B1
KR101633505B1 KR1020150057330A KR20150057330A KR101633505B1 KR 101633505 B1 KR101633505 B1 KR 101633505B1 KR 1020150057330 A KR1020150057330 A KR 1020150057330A KR 20150057330 A KR20150057330 A KR 20150057330A KR 101633505 B1 KR101633505 B1 KR 101633505B1
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KR
South Korea
Prior art keywords
main body
perforation
grout
hole
injected
Prior art date
Application number
KR1020150057330A
Other languages
Korean (ko)
Inventor
김동만
이옥재
Original Assignee
(주)서동
서동산업(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)서동, 서동산업(주) filed Critical (주)서동
Priority to KR1020150057330A priority Critical patent/KR101633505B1/en
Application granted granted Critical
Publication of KR101633505B1 publication Critical patent/KR101633505B1/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • E02D17/207Securing of slopes or inclines with means incorporating sheet piles or piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/80Ground anchors
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/02Setting anchoring-bolts with provisions for grouting

Abstract

According to one embodiment of the present invention, since the body portion is formed as a hollow structure, the weight is reduced, and manufacturing and production costs can be reduced. In addition, in the interior of the perforation formed on a rock or a slope, It is possible to prevent detachment.

Description

The support material

The present invention relates to a support material.

In general, civil engineering works to create roads or tunnels involve shaving or excavating mountains or ground.

Among them, the tunnel construction forms a foundation hole at a position where a tunnel is to be formed, and an underlying tunnel is formed by gradually expanding the foundation hole using an explosive such as dynamite.

When the foundation tunnel is formed as described above, the reinforcing film construction for pouring concrete on the inner wall of the foundation tunnel is carried out by using the shotcrete pouring device.

Thereafter, in order to prevent the tunnel from collapsing, a perforation is formed in the reinforcing membrane, a rock bolt is inserted in the perforation, and mortar is injected and fixed together with the rock.

An example of the prior art for such a lock bolt is disclosed in Korean Registered Utility Model No. 20-0372672 'Spacer lock bolt'.

The above-mentioned spacer lock bolt includes a lock bolt body in which a plurality of latching hatches are welded at equal intervals in three longitudinal rows or more along the outer circumferential surface to be inserted into the rock hole, a mortar to be charged between the lock bolt body and the rock bolt hole A mortar finishing cap formed at one end of the mortar injection pipe to prevent the injected mortar from flowing down, and a lock bolt main body fixed to the ground near the entrance of the rock hole at the end of the lock bolt body. And the like, and the like.

On the other hand, in the construction such as ground reinforcement, retaining wall maintenance, and installation necessary for constructing structures such as natural slopes adjacent to terraces, railways and roads, and reinforcement of artificial slopes, a ground reinforcement method Are applied, earth retaining works, earth anchoring and soilless nailing methods are mainly used.

Among them, the soilless nailing method is a method of reinforcing sloped ground or excavated surface with deformed reinforcing bars (nails). Generally, a surface protection surface is formed by shotcrete on the slope surface or terraced excavation surface, the ground is pierced and the nail is inserted And then grouting the soil nail anchor body.

Such a soilless nailing method is disclosed in Korean Patent Laid-Open No. 10-2015-0000992 'Removable nail assembly structure and nail recovery method using the same.

However, in the rock bolt installation and the soilless nailing method, the mortar injection pipe is inserted into the perforation hole to inject the mortar, which lowers the workability and lowers the working efficiency.

In addition, it is required to develop a device that can be used universally for construction of rock bolts, soil nailing, and the like to reinforce rocks, grounds, and slopes.

Accordingly, the present invention has been made in view of the above-mentioned background, and it is an object of the present invention to provide a hollow body having a hollow structure, thereby reducing weight and reducing manufacturing and production costs, The purpose is to provide support materials that can be used.

Further, it is an object of the present invention to provide a backing material capable of improving the workability because the grout is injected into the perforation through the main body portion.

It is also an object of the present invention to provide a support material which is securely fixed in the perforation due to a discharge hole formed in the main body, a coupling member coupled to the outer peripheral surface of the main body, and a fixed cap coupled to the upper portion of the main body.

The objects of the present invention are not limited thereto, and other objects not mentioned may be clearly understood by those skilled in the art from the following description.

In order to accomplish the above object, an embodiment of the present invention provides a discharge hole in which grout is discharged to a main body portion inserted into a perforation so that a grout is injected into a perforation formed on a rock or a slope, Is caulked between the end portion of the main body portion and the inlet of the perforation after the completion of the grout injection into the perforation so that the grout injected into the inside does not flow out. Lt; / RTI >

And a binding member provided on an outer circumferential surface of the main body to support the main body in the perforation, the binding member having a number of cut-out grooves.

And a fixing cap having a lower end fitted into the upper part of the body part and having a fixing step formed on an outer circumferential surface thereof so as to prevent the body part from being detached from the inside of the perforation.

And a nodule is formed on an outer circumferential surface of the main body to increase the attachment surface of the grout to the grout discharged into the perforation.

According to one embodiment of the present invention, since the body portion is formed as a hollow structure, the weight can be reduced to reduce manufacturing and production costs, and it is possible to prevent the body portion from being detached from the inside of the hole formed in the rock, .

Further, since the grout is injected into the perforation through the main body, the workability can be improved.

Further, there is an effect that the support material is firmly fixed in the perforation due to the discharge hole formed in the main body, the coupling member coupled to the outer peripheral surface of the main body, and the fixed cap coupled to the upper portion of the main body.

1 is a view illustrating a support according to an embodiment of the present invention.
2 is a perspective view of a cross-section of a support according to an embodiment of the present invention.
3 is a view illustrating a support according to another embodiment of the present invention.
4 is a view showing an example of use of the backing material of Fig.
Fig. 5 is a view showing an example of use of the backing material of Fig. 3. Fig.
6 is a view showing examples of the fixed cap in the support according to the embodiments of the present invention.
7 is a view showing examples of the nodule in the support according to the embodiments of the present invention.
FIG. 8 is a view showing an example in which the support material of FIG. 1 is used in tunnel construction. FIG.
9 is a view showing an example in which the support material of FIG. 1 is used at the time of slope construction.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 is a view illustrating a support according to an embodiment of the present invention. 2 is a perspective view of a cross-section of a support according to an embodiment of the present invention. 3 is a view illustrating a support according to another embodiment of the present invention. 4 is a view showing an example of use of the backing material of Fig. Fig. 5 is a view showing an example of use of the backing material of Fig. 3. Fig. 6 is a view showing examples of the fixed cap in the support according to the embodiments of the present invention. 7 is a view showing examples of the nodule in the support according to the embodiments of the present invention. FIG. 8 is a view showing an example in which the support material of FIG. 1 is used in tunnel construction. FIG. 9 is a view showing an example in which the support material of FIG. 1 is used at the time of slope construction.

As shown in these drawings, the support 100 according to an embodiment of the present invention includes a perforation 403 such that a grout is injected into a perforation 403 formed in a rock 401 or a slope 901, A hole 403 is formed so as to prevent a grout injected into the hole 403 from flowing out to the outside, and a discharge hole 103 for discharging grout is formed in the main body 101 inserted into the hole 403. [ After the completion of the grout injection, caulking is performed between the end of the main body 101 or between the main body 101 and the entrance of the perforation 403.

The body 101 is inserted into the perforations 403 formed in the rock 401 or the slope 901 so that the grout injected from the outside is injected into the perforations 403.

For example, the body 101 has a cylindrical or polygonal cross-section, and has a hollow shape so that the grout can be moved therein.

The main body 101 is provided with a plurality of grooves for preventing the grout injected into the perforations 403 from flowing out to the outside after the grout is completely injected into the perforations 403 through the main body 101. [ Caulking may be performed between the end of the body 101 or the entrance of the bore 403 and the caulking may be a filling operation or a caulking material.

A cap member 105 may be provided between the body 101 and the entrance of the hole 403 for the caulking process. The cap member 105 may be made of an elastic material such as rubber And the cap member 105 may be formed in such a shape that the diameter gradually decreases toward the opposite direction from the inlet side of the perforation 403. [

The cap member 105 is formed with a through hole 203 through which the main body 101 is inserted so that the main body 101 can be inserted into the perforation 403.

The cap member 105 functions to prevent the grout injected into the perforations 403 from leaking to the outside.

In order to support the main body portion 101 inserted in the perforation 403, the fixing member 107 may be fitted into the cap member 105 inside the cap member 105. The fixing member 107 may have a part of the wall thereof, The protruding outer wing portion 109 and the inner wing portion 111 having a part of the wall portion cut out and bending inward in the inner direction may be formed.

The fastener 107 allows the body 101 to be positioned and supported within the perforation 403 such that the outer wing 109 supports the wall of the bore 403 and the inner wing 111 ) Supports the outer circumferential surface of the main body 101.

The fixture 107 can be supported by the pressure plate 113. The fixture 107 installed on the inlet side of the perforation 403 is not released to the outside by installing the pressure plate 113 as described above.

The main body 101 is formed with a discharge hole 103 through which a grout is discharged. The discharge hole 103 may be spaced apart from the main body 101 by a predetermined distance.

Here, the discharge holes 103 are formed to have different diameters, so that a grout injected from the outside through the main body 101 can be sequentially discharged into the perforations 403.

The discharge hole 103 may be formed in various shapes such as a circular shape, an elliptical shape, a long hole shape and the like. The discharge hole 103 may be formed in the main body 101 Can be prevented from being detached from the inside of the perforation 403.

The thread 201 is formed on the outer circumferential surface of the end portion of the main body 101 so that the thread 201 is formed on the outer circumferential surface of the end portion of the main body 101, So that the pressure plate 113 can be pressed.

The discharge tube 117 may be installed inside the perforation 403 through the pressure plate 113. The discharge tube 117 may be disposed inside the perforation 403 when grout is injected into the perforation 403. [ So that the residual air is discharged to the outside or the grout is discharged to the outside when the grout is excessively injected.

Here, the discharge tube 117 may be formed of a metal material or a rubber material, and may be made of a material resistant to corrosion.

A nod 119 is formed on the outer circumferential surface of the main body 101. The nod 119 is formed on the outer circumferential surface of the main body 101 so that the grout discharged into the perforation 403 The attachment surface between the body portions 101 increases.

A plurality of the nod 119 may be formed on the outer circumferential surface of the main body 101 at predetermined intervals in the longitudinal direction with a predetermined length. As shown in FIG.

Of course, as shown in FIG. 7, the nod 119 may be formed of one or a plurality of sets in which the reduced diameter sections are formed.

The binding member 303 may be provided on the outer circumferential surface of the main body 101 so as to prevent the main body 101 from being shaken within the perforation 403. The binding member 303 may be provided with a plurality of cut- And also to support the main body 101 in the perforation 403 so as not to be detached.

Such a binding member 303 is arranged to extend from the central axis of the main body 101 toward the entrance of the perforation 403 in a downward direction (i.e., a direction toward the entrance of the perforation 403 when the main body 101 is inserted into the perforation 403) A truncated conical or polygonal prism shape, and a plurality of incision grooves 301 formed in the circumferential direction.

A fixing cap 121 may be fitted to an upper portion of the main body 101. A grout supplied through the main body 101 is inserted into the perforation 403 And the lower end of the fixed cap 121 is fitted into the upper portion of the body portion 101 and is inserted into the body portion 101 in the perforation 403. The through hole 205 is formed in the body portion 101, So as to prevent it from being released to the outside.

An example of the fixed cap 121 will be described in more detail. The fixed cap 121 includes an insertion portion 207 fitted to the upper portion of the body portion 101; A latching part 209 which protrudes from the upper side of the insertion part 207 and restricts the insertion depth of the insertion part 207; And a fixing jaw 211 spaced apart from the outer circumferential surface of the engaging portion 209 and preventing the body portion 101 from being detached from the inside of the perforation 403. [

Here, the fixed cap 121 may be formed of a metal material or a rubber material, and may be formed of a material resistant to corrosion.

The fixed cap 121 may have various shapes such as a wedge shape and a cone shape as shown in FIG.

The fixed cap 121 may be provided with a discharge hole 123 between the outer circumferential surface of the stopper portion 209 or between the adjacent fixing protrusions 211. The discharge hole 123 is formed through the main body portion 101, And a function to prevent the main body 101 from being detached from the inside of the perforation 403 through an increase in the adhesion resistance due to the enlargement of the contact area with the grout, .

Here, the discharge holes 123 may have the same diameter or different diameters, and may be formed in various shapes such as circular, elliptical, and long.

The wedge groove 125 may be formed in the discharge hole 123 so as to assist the function of the fixed cap 121 by increasing the adhesion due to expansion of the contact area with the injected grout .

Of course, the fixing jaws 211 described above may be formed of one or more than two.

On the other hand, a backflow prevention cap 305 for preventing backflow of grout may be fitted to the lower portion of the main body 101.

More specifically, the backflow prevention cap 305 includes a body portion 307 inserted into a lower portion of the body portion 101; And an opening and closing part 311 provided on the upper side of the body part 307 for preventing the backflow of the injected grout by opening and closing the through hole 309 through which a grout injector (not shown) .

The support member 100 described above may be used to prevent the rock mass from being collapsed during tunnel construction as shown in FIG. 9, or may be used to prevent the slope from collapsing as shown in FIG. 10, And can be used in various construction sites.

As described above, according to the embodiment of the present invention, since the body portion is formed in a hollow structure, the weight can be reduced to reduce manufacturing and production costs, and the body portion can be detached from the inside of the perforation formed on the rock, There is an effect that can be prevented.

Further, since the grout is injected into the perforation through the main body, the workability of the support material can be improved.

Further, the support member is firmly fixed in the perforation due to the discharge hole formed in the main body, the coupling member coupled to the outer peripheral surface of the main body, and the fixed cap coupled to the upper portion of the main body.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Support material 101:
103: discharge hole 105: cap member
107: fixture 109: outer wing
111: inner wing 113: pressure plate
115: fastening nut 117: discharge tube
119: nod 121: fixed cap
123: Discharge hole 125: Wedge groove
201: thread 203: through hole
205: through hole 207:
209: fastening portion 211: fastening jaw
301: incision groove 303: binding member
305: backflow prevention cap 307:
309: Through hole 311:
401: Rock 403: Perforation
901: Slope

Claims (4)

A discharge hole through which the grout is discharged is formed in a main body portion inserted into the perforation so that a grout is injected into the perforation formed on the rock or slope,
After completion of the injection of the grout into the perforation so as to prevent the grout injected into the perforation from being leaked out, a caulking is performed between the end of the main body or the inlet of the perforation, ),
A body portion inserted into a lower portion of the body portion and having a through hole through which the grout injector is inserted; And an opening / closing part installed on an upper surface of the body part to prevent backflow of the grout injected by opening / closing the through hole. And
An insertion portion to be fitted into an upper portion of the main body portion so as to prevent the main body portion from being detached from the inside of the perforation, a latching portion extending from the upper side of the insertion portion to limit the insertion depth of the insertion portion, And a fixing cap which is formed to be spaced apart from the main body to prevent the main body from being detached from the inside of the perforation,
Wherein the fixed cap has a discharge hole formed between an outer circumferential surface of the holding part and the adjacent fixing part, and the discharge hole is formed with a wedge groove so as to increase the adhesive force due to expansion of the contact area with the grout,
Characterized in that the main body portion includes a groove portion formed on the outer circumferential surface with a predetermined interval in the longitudinal direction and formed with one or more sections having a reduced diameter so as to increase the attachment surface of the groove to the grout discharged to the inside of the hole. .
The method according to claim 1,
And a binding member provided on an outer circumferential surface of the main body so as to support the main body within the perforation, the main body including a plurality of cut-away grooves.
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KR1020150057330A 2015-04-23 2015-04-23 The support material KR101633505B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101899301B1 (en) * 2018-03-20 2018-09-17 더베스트테크 주식회사 Combination Structure of Soil Nail and Spacer for Grouting
KR102253066B1 (en) * 2021-01-26 2021-05-14 신현택 fixing method of hollow rockrock for tunnel construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030004187A (en) * 2002-11-19 2003-01-14 곽윤형 anchor-nail and anchor-nailing method for slope-reinforcement-construction
KR100596932B1 (en) * 2004-05-06 2006-07-04 로크산업 주식회사 a fixed device for rock bolt
KR100896963B1 (en) * 2008-11-04 2009-05-12 김찬수 Rock bolt
KR20140132996A (en) * 2013-05-09 2014-11-19 김한겸 Injection and grouting grouting solution construction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030004187A (en) * 2002-11-19 2003-01-14 곽윤형 anchor-nail and anchor-nailing method for slope-reinforcement-construction
KR100596932B1 (en) * 2004-05-06 2006-07-04 로크산업 주식회사 a fixed device for rock bolt
KR100896963B1 (en) * 2008-11-04 2009-05-12 김찬수 Rock bolt
KR20140132996A (en) * 2013-05-09 2014-11-19 김한겸 Injection and grouting grouting solution construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101899301B1 (en) * 2018-03-20 2018-09-17 더베스트테크 주식회사 Combination Structure of Soil Nail and Spacer for Grouting
KR102253066B1 (en) * 2021-01-26 2021-05-14 신현택 fixing method of hollow rockrock for tunnel construction

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