JPH0296099A - Tunnel timbering arch shape steel frame and manufacture of tunnel timbering arch shape steel frame - Google Patents
Tunnel timbering arch shape steel frame and manufacture of tunnel timbering arch shape steel frameInfo
- Publication number
- JPH0296099A JPH0296099A JP63248531A JP24853188A JPH0296099A JP H0296099 A JPH0296099 A JP H0296099A JP 63248531 A JP63248531 A JP 63248531A JP 24853188 A JP24853188 A JP 24853188A JP H0296099 A JPH0296099 A JP H0296099A
- Authority
- JP
- Japan
- Prior art keywords
- joint
- shaped steel
- ceiling beam
- steel frame
- tunnel
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 244000178870 Lavandula angustifolia Species 0.000 claims 1
- 235000010663 Lavandula angustifolia Nutrition 0.000 claims 1
- 239000001102 lavandula vera Substances 0.000 claims 1
- 235000018219 lavender Nutrition 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【発明の詳細な説明】
■ 発明の目的
(1)産業上の利用分野
この発明は、坑道支保のために使用するアーチ型鋼枠並
びにアーチ型鋼枠の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (1) Field of Industrial Application The present invention relates to an arch-shaped steel frame used for supporting a mine shaft and a method of manufacturing the arch-shaped steel frame.
(2)従来の技術
従来、各種鉱山において、切羽を掘り進む時に坑道内の
空間を確保するために支保部材で支保しているものであ
る。支保部材としては、古くは木柱、木梁が用いられて
いだが、近年においては鉄柱に鉄梁を連設する様に表し
た鉄枠で丸太材である杭木を支架させている。(2) Prior Art Conventionally, in various mines, supporting members are used to secure the space inside the tunnel when excavating the tunnel face. In the old days, wooden pillars and wooden beams were used as supporting members, but in recent years, wooden stakes, which are logs, are supported by iron frames, which resemble iron beams connected to iron pillars.
(3)発明が解決しようとする問題点
しかしながら、鉄柱に鉄梁を継手した場合には、継手部
分に荷重が加わって破損し易いもので、継手部のボルト
孔をアークやガスで開孔した場合には継手部の材質が弱
体化し、まだドリルで開孔する場合には手間を要するも
のであった。まだ、天井梁材、或いは支柱材を熱間曲げ
加工した場合にも鋼材そのものが弱体化し、坑道の崩か
いを発生し易い等の難点があった。(3) Problems to be solved by the invention However, when a steel beam is connected to a steel column, the joint part is easily damaged due to the load applied to it, and the bolt holes in the joint part must be drilled with arc or gas. In some cases, the material of the joint becomes weakened, and it takes time and effort to drill the hole. However, even when ceiling beams or support beams are hot bent, the steel itself becomes weakened, making the tunnel more likely to collapse.
本発明は、上記従来の問題点に鑑みてなされたものであ
り、その目的は、坑道支保のための鋼枠が弾体で天井梁
材と支柱部材との継手部も強度が高く、しかも加工がな
し易い等を特徴とする坑道支保用アーチ型鋼枠、並びに
その製造方法を提供するにある。The present invention has been made in view of the above-mentioned problems of the conventional art.The purpose of the present invention is to make the steel frame for supporting the mine shaft elastic and have high strength at the joints between the ceiling beam and the support column, and also to provide a machined structure. An object of the present invention is to provide an arch-shaped steel frame for supporting a mine shaft, which is characterized by easy construction, and a method for manufacturing the same.
一
■ 発明の構成
(1)問題点を解決するための手段
上記目的を達成するために、本発明はポカール鋼で形成
した■型鋼を素材とした天井梁と、左右支柱とをアーチ
型に継手した鋼枠であって、坑道の天井面に略一致する
様にわん曲され、■型鋼の両端部のウェブに継手孔が開
孔された天井梁と、
上端部が1方側へ曲成され、工型鋼の上端部のウェブに
継手孔が開孔された左右支柱と、前記天井梁と左右支柱
との継手孔に連通ずる継手孔が開孔され、天井梁と左右
支柱とのウェブの突合せ部の前後面に当接させて継手す
るための継手板と、
を備え、天井梁の両端に突合せた左右支柱のウェブ相互
の前後面に継手板を当接させてボルトナツトで締結した
坑道支保用アーチ型鋼枠を構成するものである。1. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides an arch-shaped joint between a ceiling beam made of Pokal steel and a left and right column. It is a steel frame that is curved to approximately match the ceiling surface of the tunnel, and has a ceiling beam with joint holes drilled in the webs at both ends of the shaped steel, and a ceiling beam whose upper end is bent to one side. , the left and right columns have joint holes drilled in the upper end webs of the engineering shaped steel, and the joint holes that communicate with the joint holes of the ceiling beam and the left and right columns are drilled, and the webs of the ceiling beam and the left and right columns butt. A joint plate for connecting by abutting on the front and rear surfaces of the ceiling beam, and a joint plate for connecting the webs of the left and right columns that abut against both ends of the ceiling beam, and the joint plates are brought into contact with the front and rear surfaces of each other and are fastened with bolts and nuts. It constitutes an arch-shaped steel frame.
まだ、前記左右支柱の上端の曲率を、天井梁の曲率と同
一となした構成をも含むものである。However, the present invention also includes a configuration in which the curvature of the upper ends of the left and right pillars is the same as the curvature of the ceiling beam.
つぎに、アーチ型鋼枠の製造方法として、坑道の内周長
と略同−長さのI型鋼の中央に対して左右対称な支柱切
断位置を中心として対称々複数の継手孔をポンチ打抜機
でウェブに開孔させ、前記■型鋼を1対の固定ローラと
押圧ローラとを有したローラベンダー内に1端より挿入
しながら2組の継手孔の位置より中央部にかけて坑道の
天井曲面と略一致する様にウェブの方向に加圧して曲成
させ、
前記中央部を曲成させた■型鋼を2組の複数継手孔の中
心位置を各々切断して中央部を天井梁に、左右部を左右
支柱とに3分割させ、
前記左右支柱の上端を1部残して坑道の側壁上端の曲面
に略一致する様にプレス機の固定金型と押圧金型で曲成
させ、
前記天井梁と左右支柱との突合せ部のウェブに描接する
継手板に複数の継手孔を開孔させ、前記天井梁の両端に
左右支柱を突合せ、該突合せだウェブの前後面に継手板
を当接させてボルトナツトで締結させるアーチ型鋼枠の
製造方法を構=6
成するものである。Next, as a manufacturing method for the arch-shaped steel frame, a plurality of joint holes are punched symmetrically with respect to the center of the I-shaped steel, which is approximately the same length as the inner circumference of the tunnel, and centered around the cutting position of the support. A hole is opened in the web, and while inserting the above-mentioned ■-shaped steel from one end into a roller bender having a pair of fixed rollers and a pressing roller, from the position of the two sets of joint holes to the center part, it almost coincides with the curved surface of the ceiling of the tunnel. Pressure is applied in the direction of the web so as to bend the steel, and cut the steel section with the central part bent at the center positions of two sets of multiple joint holes, and use the central part as a ceiling beam and the left and right parts as left and right parts. The upper ends of the left and right supports are bent into three parts using a fixed die and a pressing die of a press machine so as to approximately match the curved surface of the upper end of the side wall of the tunnel, leaving one part of the upper ends of the left and right supports. A plurality of joint holes are drilled in the joint plate that is in contact with the web at the butt part, and the left and right support columns are butted against both ends of the ceiling beam, and the joint plate is brought into contact with the front and rear surfaces of the butted web and fastened with bolts and nuts. This method comprises a method for manufacturing an arch-shaped steel frame.
また、前記ポンチ打抜機で継手孔を開孔する工程を、上
下作動するポンチの下方に側方へ向けて工型鋼を押送す
るための架台を設置し、前記架台の上面において、山型
板にストッパーを嵌着させる複数の溝を設けだ開孔位置
決め手段をポンチより規定長さをおいて設置させ、前記
位置決め手段の山型板の溝にストッパーを嵌着して■型
鋼の1端をストッパー板に当着させて位置決めしながら
ポンチ打抜機で複数の継手孔を開孔する構成となしても
よい。In addition, in the process of drilling a joint hole with the punch punch machine, a pedestal is installed to push the molded steel laterally below the punch that operates up and down, and the top surface of the pedestal is placed on the chevron-shaped plate. A hole positioning means is provided with a plurality of grooves into which the stopper is fitted.The hole positioning means is installed at a specified length from the punch, and the stopper is fitted into the groove of the chevron plate of the positioning means, and one end of the shaped steel is inserted into the stopper. A configuration may be adopted in which a plurality of joint holes are punched using a punch-cutting machine while positioning the joint hole in contact with a plate.
(2)作用
本発明においては、■型鋼でもって天井梁と左右支柱と
を形成し、前記天井梁並びに左右支柱の相対向する端部
のウェブに継手孔を開孔しおき、前記継手孔を開孔した
ウェブに継手板を当接させてボルトナツトで締結して坑
道支保のだめのアーチ型鋼枠となすものである。(2) Function In the present invention, the ceiling beam and the left and right support columns are formed of type steel, and joint holes are drilled in the webs at opposite ends of the ceiling beam and the left and right support columns, and the joint holes are formed. A joint plate is brought into contact with the perforated web and fastened with bolts and nuts to form an arch-shaped steel frame for supporting a mine shaft.
そして、前記アーチ型鋼枠の製造方法として、■型鋼の
中央に対して対称な支柱切断位置に継手のだめの孔をポ
ンチ打抜機でウェブに開孔させ、その後中央部を天井曲
面と略一致する様に加圧して曲成させ、切断位置を切断
して中央部を天井梁に、左右部を左右支柱に3分割する
、更に、左右支柱の上端を曲成させて製品となすもので
ある。The method for manufacturing the arch-shaped steel frame is as follows: (1) A hole for the joint is made in the web using a punching machine at a position where the pillars are cut symmetrically with respect to the center of the steel frame, and then the center portion is made to approximately match the curved surface of the ceiling. The product is made by pressurizing and bending the material, cutting at the cut point to divide the center into a ceiling beam, and the left and right into left and right pillars, and then bending the upper ends of the left and right pillars.
従って、継手孔の開孔も容易で、材質が劣化することも
ない。Therefore, the joint hole can be easily opened and the material does not deteriorate.
(3)実施例
以下、添付図面により本発明の好適な実施例を説明する
。(3) Embodiments Hereinafter, preferred embodiments of the present invention will be explained with reference to the accompanying drawings.
第1図に示す様に、坑道補強用アーチ型鋼枠10は、天
井梁12の両端に左支柱14aと右支柱14bとを突合
せて継手板16で継手している。As shown in FIG. 1, the arch-shaped steel frame 10 for reinforcing a tunnel has a left support 14a and a right support 14b abutted against each other at both ends of a ceiling beam 12 and connected by a joint plate 16.
そして、前記天井梁12、左右支柱14a、14bは、
ポカール鋼を素材としだ■型鋼で形成するものである。The ceiling beam 12, left and right columns 14a, 14b are
It is made of Pokal steel and is made of type steel.
第4図に示す様に、天井梁12はウェブ18を上下方向
として坑道20の天井面に合う曲率で曲成され、ウェブ
18の両端には2個の継手孔22aが開孔されている。As shown in FIG. 4, the ceiling beam 12 is curved with a curvature that matches the ceiling surface of the tunnel 20 with the web 18 in the vertical direction, and two joint holes 22a are opened at both ends of the web 18.
第5図に示す様に左支柱14aは、天井梁12と継手し
た時、継手板16がウェブ18に当接する様に上端一部
を天井梁12と同一曲率に第1曲成24され、前記第1
曲成24の下部位置を坑道20の側壁上端面に合う曲率
で第2曲成26されている。As shown in FIG. 5, a portion of the upper end of the left support 14a is first curved 24 to have the same curvature as the ceiling beam 12 so that the joint plate 16 comes into contact with the web 18 when the left support 14a is connected to the ceiling beam 12. 1st
A second curve 26 is formed at the lower part of the curve 24 with a curvature that matches the upper end surface of the side wall of the tunnel 20.
そして、ウェブ18の上端に2個の継手孔22bを開孔
している。Two joint holes 22b are formed at the upper end of the web 18.
第6図に示す様に右支柱14bは、左支柱14aと対称
であり、上端部に第1曲成24、第2曲成26、継手孔
22bを設けている。As shown in FIG. 6, the right column 14b is symmetrical to the left column 14a, and has a first curve 24, a second curve 26, and a joint hole 22b at its upper end.
第7図に示す継手板16は、天井梁12と左右支柱14
a、14bとを継手するだめにウェブ18内に嵌合する
口型板に4個の継手孔22Cを開孔させている。The joint plate 16 shown in FIG.
In order to connect the webs 14a and 14b, four joint holes 22C are formed in the mouth plate that fits into the web 18.
第2図、第3図に示す様に、天井梁12の左側端に左支
柱14aの端面を突合せ、ウェブ18の前面と後面とに
継手板16.16を当着させ、相互に連通した天井梁1
2の継手孔22a1左支柱14aの継手孔22bと継手
板16.16の継手孔22cに4個のボルトナツト28
を嵌挿して締着するものである。右支柱14bも同様に
天井梁12の右側端に継手する。左右支柱14a、14
bの上端の第1曲成24は、天井梁12の曲率と同一で
あるため継手板16を突合せ部のウェブ18に当接させ
得るものである。As shown in FIGS. 2 and 3, the end surface of the left column 14a is butted against the left end of the ceiling beam 12, and the joint plates 16 and 16 are brought into contact with the front and rear surfaces of the web 18, thereby creating a ceiling that communicates with the ceiling beam 12. Beam 1
2 joint holes 22a1, 4 bolt nuts 28 in the joint hole 22b of the left support 14a, and the joint hole 22c of the joint plate 16.16.
It is inserted and tightened. The right support 14b is similarly connected to the right end of the ceiling beam 12. Left and right struts 14a, 14
The first curvature 24 at the upper end of b is the same as the curvature of the ceiling beam 12, so that the joint plate 16 can be brought into contact with the web 18 of the butt portion.
アーチ型鋼枠10の構成片である天井梁12、左右支柱
14a、14bは、1本の■型鋼より製造するものであ
る。The ceiling beam 12 and the left and right support columns 14a and 14b, which are the constituent pieces of the arch-shaped steel frame 10, are manufactured from one piece of square steel.
前記製造方法においては、所定の坑道20の内周長に略
等しい■型鋼34を裁断する。そして、第8図乃至第9
図に示す様に、ポンチ開孔機30のポンチ32でまず天
井梁12の両端の継手孔22aと左右支柱14a、14
bの継手孔22bとを■型鋼34を切断する以前に開孔
する。そのために、ポンチ32の下方位置に■型鋼34
を側方ヘスライドさせるだめの架台36を設けている。In the manufacturing method described above, a square shaped steel 34 having a length substantially equal to the inner circumferential length of a predetermined tunnel 20 is cut. And, Figures 8 to 9
As shown in the figure, first, with the punch 32 of the punch hole punching machine 30, the joint holes 22a at both ends of the ceiling beam 12 are
A joint hole 22b and a joint hole 22b are opened before cutting the type steel 34. For this purpose, the shape steel 34 is placed at the lower position of the punch 32.
A pedestal 36 is provided to allow the slider to slide sideways.
前記架台36の上面には左支柱14aの継手孔22bと
天井梁12の左側端の継手孔22aの4個を開孔するた
めの第1開孔位置決め手段38aと、天井梁12の右側
端の継手孔22aと右支柱14bの継手孔22bの4個
を開孔するための第2開孔位置決め手段38bとがポン
チ32よシ規定長さの位置に設置されている。On the upper surface of the pedestal 36 are first hole positioning means 38a for opening four joint holes 22b of the left support 14a and the joint hole 22a of the left end of the ceiling beam 12, and a first hole positioning means 38a for opening four joint holes 22b of the left support 14a and the joint hole 22a of the left end of the ceiling beam 12. A second opening positioning means 38b for opening the four joint holes 22a and the joint hole 22b of the right column 14b is installed at a predetermined length from the punch 32.
前記第1、第2開孔位置決め手段38a、38bは第9
図、第10図に示す様に山型板40に4組のストッパー
挿入のだめの溝42が開孔されている。The first and second hole positioning means 38a, 38b are
As shown in FIG. 10, grooves 42 for inserting four sets of stoppers are formed in the chevron-shaped plate 40.
そして、ポンチ開孔機30のポンチ32の下方でlff
1鋼34を横倒しに載せ、第1開孔位置決め手段38a
の山型板40のポンチ32に近い方の溝42にストッパ
ー44を嵌合させおき、該ストッパー44に■型鋼34
の1端を当接させてポンチ開孔機30により継手孔を開
孔させ、ストッパー44を他の溝42に移し替えながら
左支柱用継手孔22a次に天井梁用継手孔22aの4個
を開孔する。同様にして、第2開孔位置決め手段38b
の位置でT型鋼34の1端をストッパー44で規制しな
がら天井梁用継手孔22a1右支柱用継手孔22bの4
個を開孔する。Then, below the punch 32 of the punch hole-opening machine 30, lff
1 steel 34 is placed sideways, and the first hole positioning means 38a
A stopper 44 is fitted into the groove 42 of the chevron plate 40 near the punch 32, and the stopper 44 is fitted with the
Abut one end of the joint hole 22a for the left column, then punch the joint hole with the hole puncher 30, and while moving the stopper 44 to the other groove 42, open the four joint holes 22a for the left support column and then the four joint holes 22a for the ceiling beam. Open a hole. Similarly, the second hole positioning means 38b
While regulating one end of the T-shaped steel 34 with the stopper 44 at the position of
Drill a hole.
次に継手孔22aと継手孔22bとの4個を連続して2
個所に開孔したlff1鋼34は、第12図に示す様に
ロールベンダー46の1対の固定ローラ4.8a、48
aと押圧ローラ48b内に1端より挿入し、左側の4個
の継手孔22b、22aの左側位置を曲げ始点49aと
し、右側の4個の継手孔22a、22bの右側位置が曲
げ終点49.bとなる様に坑道の天井面に略一致する曲
率に曲成させる。Next, connect the four joint holes 22a and 22b in succession.
As shown in FIG.
a into the pressing roller 48b from one end, the left position of the four joint holes 22b, 22a on the left side is the bending start point 49a, and the right position of the four joint holes 22a, 22b on the right side is the bending end point 49. It is curved to a curvature that approximately matches the ceiling surface of the tunnel so that it becomes b.
第13図に示す様に、中央部を曲げ加工した■型鋼34
は、左右継手孔の内で4個の中心位置を左切断線50a
、右切断線50bとしてガス切断する。切断した中央部
材34aは天井梁12となり、左右部材34b、34c
は上端部が天井梁12と同一曲率に第1曲成24されて
いるが、その下方を第2曲成26させるために、第14
図に示す様にプレス機52の固定金型54aと押圧金型
54bとの間で左右部材34b、34cをそれぞれプレ
スして第2曲成26を設け、左右支柱14a、、14b
となすものである。As shown in Figure 13, ■-shaped steel 34 with the central part bent
The four center positions of the left and right joint holes are located at the left cutting line 50a.
, gas cutting is performed using the right cutting line 50b. The cut central member 34a becomes the ceiling beam 12, and the left and right members 34b, 34c
has a first curve 24 whose upper end has the same curvature as the ceiling beam 12, but in order to create a second curve 26 below it, a 14th
As shown in the figure, the left and right members 34b and 34c are pressed between the fixed mold 54a and the pressing mold 54b of the press machine 52, respectively, to form a second curved structure 26, and the left and right columns 14a, 14b are pressed.
This is what is done.
そして、天井梁12、左右支柱14a、14b。Then, the ceiling beam 12 and the left and right columns 14a and 14b.
継手板16等を大量生産して現場の坑道20内に順次搬
入し、アーチ型鋼枠10として数mをおいて組立設置し
、坑道20の天井面と天井梁12との間隙に複数の杭木
56を挿入して坑道20内を支保するものである。Joint plates 16 and the like are mass-produced and transported one by one into the tunnel 20 at the site, assembled and installed as an arch-shaped steel frame 10 at intervals of several meters, and a plurality of stakes are installed in the gap between the ceiling surface of the tunnel 20 and the ceiling beam 12. 56 is inserted to support the inside of the tunnel 20.
■ 発明の詳細
な説明した様に、本発明になるアーチ型鋼枠、並びにア
ーチ型鋼枠の製造方法においては、ポカール鋼のIW鋼
を素材として各天井梁、左右支柱を形成するため支持耐
力が大きく、また天井梁と左右支柱とは冷間曲げ加工で
あると共に、継手孔もポンチ孔で打抜き加工するため材
質が劣化することなく、継手孔の開孔、曲げ加工等も能
率的になし得る等の効果を奏するものである。■ As explained in detail about the invention, in the arch-shaped steel frame and the manufacturing method of the arch-shaped steel frame according to the present invention, each ceiling beam and left and right columns are formed using Pokal steel IW steel, so the supporting strength is large. In addition, the ceiling beams and left and right columns are cold bent, and the joint holes are also punched out, so the material does not deteriorate and the drilling and bending of the joint holes can be done efficiently. It has the following effects.
第1図は本発明の実施例に係るアーチ型鋼枠を示した正
面図、第2図はその左支柱と天井梁との継手部の拡大正
面図、第3図はそのA−A線断面図、第4図は天井梁の
一部拡大正面図、第5図は左支柱の一部拡大正面図、第
6図は右支柱の一部拡大正面図、第7図は継手板の拡大
正面図、第8図はポンチ開孔機と架台を示した一部拡大
正面図、第9図は位置決め手段を示しだ架台の一部拡大
正面図、第10図はその拡大平面図、第11図は第10
図B−B線矢視図、第12図は■型鋼をロールベンダー
で曲成する一部拡大平面図、第13図はロールベンダー
で曲成したI型鋼の一部拡大正面図、第14図は分断、
L6支柱の上端をプレス機でプレス曲成する一部拡大平
面図である。
107−チ型鋼枠、12天井梁、14a、14b左右支
柱、16継手板、22継手孔、30ポンチ開孔機、34
ポカールエ型鋼、36架台、38a。
38b開孔位置決め手段、460−ルベンダ−52プレ
ス機Fig. 1 is a front view showing an arched steel frame according to an embodiment of the present invention, Fig. 2 is an enlarged front view of the joint between the left column and the ceiling beam, and Fig. 3 is a sectional view taken along the line A-A. , Fig. 4 is a partially enlarged front view of the ceiling beam, Fig. 5 is a partially enlarged front view of the left support, Fig. 6 is a partially enlarged front view of the right support, and Fig. 7 is an enlarged front view of the joint plate. , FIG. 8 is a partially enlarged front view showing the punching machine and the mount, FIG. 9 is a partially enlarged front view of the mount showing the positioning means, FIG. 10 is an enlarged plan view thereof, and FIG. 11 is a partially enlarged front view of the mount. 10th
Figure B-B line arrow view, Figure 12 is a partially enlarged plan view of ■-shaped steel bent with a roll bender, Figure 13 is a partially enlarged front view of I-shaped steel bent with a roll bender, and Figure 14. is divided,
FIG. 3 is a partially enlarged plan view showing the upper end of the L6 support column being press-curved using a press machine. 107-chi type steel frame, 12 ceiling beam, 14a, 14b left and right support, 16 joint plate, 22 joint hole, 30 punch hole drill, 34
Pokarue type steel, 36 frame, 38a. 38b hole positioning means, 460-Rubender-52 press machine
Claims (1)
に継手板で継手した鋼枠であって、 坑道の天井面に略一致する様にわん曲され、I型鋼の両
端部のウェブに継手孔が開孔された天井梁と、 上端部が1方側へ曲成され、I型鋼の上端部のウェブに
継手孔が開孔された左右支柱と、前記天井梁と左右支柱
との継手孔に連通する継手孔が開孔され、天井梁と左右
支柱とのウェブの突合せ部の前後面に当接させて継手す
るための継手板と を備え、天井梁の両端に突合せた左右支柱のウェブ相互
の前後面に継手板を当接させボルトナットで締結したこ
とを特徴とする、坑道支保用アーチ型鋼枠。 2 前記左右支柱の上端の曲率を、天井梁の曲率と同一
となしたことを特徴とする、特許請求の範囲第1項記載
の坑道支保用アーチ型鋼枠。 3 坑道の内周長と略同一長さのI型鋼の中央に対して
左右対称な支柱切断位置を中心として対称な複数の継手
孔をポンチ打抜機でウェブに開孔させ、前記I型鋼をロ
ーラベンダー内に1端より挿入しながら2組の継手孔の
位置より中央部にかけて坑道の天井曲面と略一致する様
にウェブの方向に加圧して曲成させ、 前記中央部を曲成させたI型鋼を2組の複数継手孔の中
心位置で各々切断して中央部を天井梁に、左右部を左右
支柱とに3分割させ、 前記左右支柱の上端を一部残して坑道の側壁上端の曲面
に略一致する様にプレス機で曲成させ、前記天井梁と左
右支柱との突合せ部のウェブに当接する継手板に複数の
継手孔を開孔させ、前記天井梁の両端に左右支柱を突合
せてウェブの前後面に継手板を当接させると共にボルト
ナットで締結させたことを特徴とする、坑道支保用アー
チ型鋼枠の製造方法。4 前記ポンチ打抜機でウェブに
継手孔を開孔する工程が、上下作動するポンチの下方よ
り側方へ向けてI型鋼を押送するための架台を設置し、
前記架台の上面において、山型板にストッパーを嵌着さ
せる複数の溝を設けた開孔位置決め手段をポンチより規
定長さをおいて設置させ、前記位置決め手段の山型板の
溝にストッパーを嵌着してI型鋼の1端をストッパーに
当着させて位置決めしながらポンチ開孔機で複数の継手
孔を開孔する工程を有したことを特徴とする、特許請求
の範囲第3項記載の坑道支保用アーチ型鋼枠の製造方法
。[Claims] 1. A steel frame in which a ceiling beam made of I-type steel and left and right columns are connected in an arch shape with a joint plate, which is curved so as to substantially match the ceiling surface of a tunnel, and made of I-type steel. a ceiling beam with joint holes drilled in the webs at both ends; left and right columns whose upper ends are bent to one side and joint holes drilled in the upper end webs of the I-shaped steel; A joint hole is drilled that communicates with the joint hole of the left and right columns, and a joint plate is provided for connecting the ceiling beam and the left and right columns by abutting on the front and rear surfaces of the butt part of the web. An arch-shaped steel frame for supporting a mine shaft, characterized in that joint plates are brought into contact with the front and rear surfaces of the webs of the left and right columns that butt against each other, and are fastened with bolts and nuts. 2. The arch-shaped steel frame for supporting a mine shaft according to claim 1, wherein the curvature of the upper ends of the left and right supports is the same as the curvature of the ceiling beam. 3 A punch punch machine is used to drill a plurality of joint holes in the web that are symmetrical about the cutting position of the pillar, which is symmetrical with respect to the center of the I-shaped steel, which has approximately the same length as the inner circumference of the tunnel, and then the I-shaped steel is rolled. While inserting into the lavender from one end, pressure was applied in the direction of the web from the position of the two sets of joint holes to the central part so as to approximately match the curved surface of the ceiling of the tunnel, and the central part was curved. Cut the shaped steel at the center positions of two sets of multiple joint holes, divide the center into a ceiling beam, and the left and right sections into left and right columns, leaving a portion of the upper ends of the left and right columns to form the curved surface of the upper end of the side wall of the tunnel. A plurality of joint holes are formed in the joint plate that abuts the webs at the abutting portions of the ceiling beam and the left and right columns, and the left and right columns are butted against both ends of the ceiling beam. A method for manufacturing an arch-shaped steel frame for supporting a mine shaft, characterized in that joint plates are brought into contact with the front and rear surfaces of the web and fastened with bolts and nuts. 4. The step of drilling a joint hole in the web with the punch cutting machine includes installing a frame for pushing the I-shaped steel from below the vertically operating punch to the side;
On the top surface of the mount, a hole positioning means provided with a plurality of grooves in which a stopper is fitted in the chevron-shaped plate is installed at a prescribed length using a punch, and the stopper is fitted into the groove of the chevron-shaped plate of the positioning means. claim 3, further comprising the step of punching a plurality of joint holes with a hole puncher while positioning the I-shaped steel by abutting one end of the I-shaped steel against a stopper. A method of manufacturing an arch-shaped steel frame for shaft support.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63248531A JPH0296099A (en) | 1988-10-01 | 1988-10-01 | Tunnel timbering arch shape steel frame and manufacture of tunnel timbering arch shape steel frame |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63248531A JPH0296099A (en) | 1988-10-01 | 1988-10-01 | Tunnel timbering arch shape steel frame and manufacture of tunnel timbering arch shape steel frame |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0296099A true JPH0296099A (en) | 1990-04-06 |
Family
ID=17179572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63248531A Pending JPH0296099A (en) | 1988-10-01 | 1988-10-01 | Tunnel timbering arch shape steel frame and manufacture of tunnel timbering arch shape steel frame |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0296099A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106522267A (en) * | 2016-12-13 | 2017-03-22 | 南京联众建设工程技术有限公司 | Steel feeding bin structure of underground comprehensive pipe gallery |
CN108457686A (en) * | 2018-04-18 | 2018-08-28 | 贵州大学 | A kind of balanced type Telescopic movable supporting arch up and down |
-
1988
- 1988-10-01 JP JP63248531A patent/JPH0296099A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106522267A (en) * | 2016-12-13 | 2017-03-22 | 南京联众建设工程技术有限公司 | Steel feeding bin structure of underground comprehensive pipe gallery |
CN106522267B (en) * | 2016-12-13 | 2019-02-22 | 南京联众建设工程技术有限公司 | The steel of underground pipe gallery feeds intake chamber structure |
CN108457686A (en) * | 2018-04-18 | 2018-08-28 | 贵州大学 | A kind of balanced type Telescopic movable supporting arch up and down |
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