JPH02125088A - Groove forming tool for brittle object and crushing method for brittle object - Google Patents
Groove forming tool for brittle object and crushing method for brittle objectInfo
- Publication number
- JPH02125088A JPH02125088A JP11377189A JP11377189A JPH02125088A JP H02125088 A JPH02125088 A JP H02125088A JP 11377189 A JP11377189 A JP 11377189A JP 11377189 A JP11377189 A JP 11377189A JP H02125088 A JPH02125088 A JP H02125088A
- Authority
- JP
- Japan
- Prior art keywords
- crushing
- groove
- brittle object
- hole
- forming tool
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract 4
- 238000005553 drilling Methods 0.000 claims description 37
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000002360 explosive Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- -1 earth Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、破砕に必要な亀裂を、大略希望する方向に
形成することができるようにし、その結果、破砕も希望
する方向へ実現することができるようにし、かつ破砕部
分周辺に二自由面を形成することによって、破砕時の抵
抗力少なくし、もって破砕を促進することができるよう
にした脆性物体の溝形成具及び脆性物体の破砕方法に関
するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention makes it possible to form cracks necessary for crushing roughly in a desired direction, and as a result, crushing can also be realized in a desired direction. A groove forming tool for a brittle object and a method for crushing a brittle object, which can reduce the resistance force during crushing and thereby promote crushing by forming two free surfaces around the crushing part. It is related to.
〈従来の技術及びその問題点〉
従来より岩石、地山、コンクリート等の脆性物体を破壊
する方法の１つとしては、例えば特公昭５９−５３９９
２号公報及び特開昭６２−２２０６５７号公報に示され
ているが、これを第２図。<Prior art and its problems> As one of the conventional methods for destroying brittle objects such as rocks, earth, concrete, etc., for example, Japanese Patent Publication No. 59-5399
2 and JP-A No. 62-220657, this is shown in FIG.
第３図及び第４図の各（Ａ）、（Ｂ）に示すと、脆性物
体ａに予め穿孔し、この孔す中に水と練りまぜた膨張性
物質のスラリーを充填し、水和過程において発生する膨
張圧により脆性物体ａを破壊する方法や、前記孔す中に
ダイナマイト等の火薬類を充填してこれに点火すること
により脆性物体ａを破壊する方法は既に開発されている
。しかしこの方法においては、穿設する孔すを正円状に
穿孔していたために、脆性物体の種類、形状、拘束状況
等により設計通りの方向性を特定した破壊を行なうこと
ができないという問題点があった。特に膨張性物質を使
用する場合には、亀裂を発生させるための孔間隔を小さ
くしないと破砕時間が長くなるという欠点があった。ま
たいずれの場合においても、破砕する際に、破砕剤充填
部から内圧が生じ、外方に脆性物体を強力に押圧するこ
とによって行うものであるが、脆性物体が巨大でかつ広
い面積を有する場合には、それ自体破砕に対する抵抗力
となって破砕の促進が阻害され、かつ破砕自体はなはだ
困難な場合もあった。As shown in FIGS. 3 and 4, (A) and (B), a hole is drilled in advance in a brittle object a, and a slurry of an expandable substance mixed with water is filled into the hole, and the hydration process is performed. A method of destroying the brittle object a by the expansion pressure generated in the hole, and a method of destroying the brittle object a by filling the hole with explosives such as dynamite and igniting it have already been developed. However, this method has the problem that because the holes are drilled in a perfect circle, it is not possible to perform fracture in a specified direction as designed, depending on the type, shape, restraint situation, etc. of the brittle object. was there. Particularly when an expandable material is used, there is a drawback that the crushing time becomes long unless the pore spacing for generating cracks is made small. In either case, when crushing, internal pressure is generated from the crushing agent filled part and forcefully presses the brittle object outward, but if the brittle object is huge and has a wide area. However, this itself acts as a resistance force against crushing, inhibiting the promotion of crushing, and in some cases, crushing itself is extremely difficult.
く問題点を解決するための手段〉
そこでこの発明にがかる脆性物体の溝形成具及び脆性物
体の破砕方法は、前記の問題点を解決するために、クロ
ーラ−ドリル、ハンドハンマーコアードリル等の穿孔機
の穿孔軸に着脱自在に形成し、かつ外周面に翼刃を突設
して、脆性物体に前記穿孔機により穿孔し、その後この
孔に、前記穿孔機の穿孔軸に着脱自在に形成し、かつ外
周面に翼刃を突設した溝形成具により破砕方向に溝を形
成し、さらにこの孔中に破砕剤を充填して破砕するよう
にし、もって方向性を与えて破砕することができるよう
にしたものである。また脆性物体中における破砕面積を
小さく区画するために、この脆性物体の破砕部分周辺に
溝状空間部を形成することによって、いわゆる二自由面
を形成し、破砕時の抵抗力を軽減させ、破砕の促進化を
図るようにしたものである。Means for Solving the Problems> Therefore, in order to solve the above-mentioned problems, the groove forming tool for brittle objects and the method for crushing brittle objects according to the present invention have the following features: The hole is formed to be removably attached to the perforation shaft of the perforation machine, and a wing blade is provided protruding from the outer circumferential surface, and the brittle object is perforated by the perforation machine, and then the hole is removably formed on the perforation shaft of the perforation machine. , and a groove is formed in the crushing direction using a groove forming tool with wing blades protruding from the outer circumferential surface, and a crushing agent is further filled into this hole to crush the material, thereby giving directionality to the crushing. This is how it was done. In addition, in order to divide the fracture area in a brittle object into a small one, a groove-like space is formed around the fractured part of the brittle object, thereby forming a so-called two-free surface, which reduces the resistance force during crushing, and The aim is to promote this.
〈実 施 例〉
次にこの発明にがかる脆性物体の溝形成具及び脆性物体
の破砕方法の一実施例を図面にもとすいて述べると、１
は上端から内部にかけて穴２を形成した円柱状の溝形成
具であり、この溝形成具１は、前記穴２を利用して、例
えばクローラ−ドリル、ハンドハンマー コアードリル
等の穿孔機の穿孔軸３に着脱自在に形成しである。また
４は溝形成具１の外周面に突設した翼刃であり、この翼
刃４は断面が略三角形状になるように先端を鋭利に形成
しであるとともに、この翼刃４は円柱状体に対して放射
状に突設されているのである。また前記翼刃４は、１枚
の場合もあるが、第１図（Ａ）に示すように２枚のとき
、また同図（Ｂ）に示すように４枚のときもあり、その
枚数に限定されるものではない。<Example> Next, an example of the groove forming tool for a brittle object and the method for crushing a brittle object according to the present invention will be described with reference to the drawings.
is a cylindrical groove forming tool in which a hole 2 is formed from the upper end to the inside. It is formed so that it can be attached and detached at will. Reference numeral 4 denotes a blade blade protruding from the outer circumferential surface of the groove forming tool 1. The blade blade 4 has a sharp tip so that the cross section is approximately triangular, and the blade blade 4 has a cylindrical shape. They protrude radially from the body. The number of blade blades 4 may be one, two as shown in FIG. 1(A), or four as shown in FIG. 1(B), depending on the number of blades. It is not limited.
〈作 用 ■ 〉
次にこの発明の作用について述べるが、前記穿孔機を用
いて脆性物体５に所望の深さの孔６を穿設する。その後
、前記と同じ穿孔機の穿孔軸３に溝形成具ｌを装着して
前記の孔６に打撃的に挿入する。一般に前記のクローラ
−ドリル、ハンドハンマー コアードリル等の穿孔軸３
は、回転作用と打撃作用をなすように構成され、しかも
回転作用と打撃作用を同時に行なったり又は切り換えに
よって一方の作用のみを行なうことができるように構成
されているのである。そこで、脆性物体５に孔６を穿設
する場合には、穿孔軸３に穿孔ビットを装着して、この
穿孔軸３（穿孔ビット）を回転せしめながら打撃作用も
行ない、穿孔するのであるが、これが済んだ後には、穿
孔ビットに代えて溝形成具１を装着して、穿設された孔
６に挿入するのである。この場合、回転作用は止め、打
撃作用のみを行なうように切り換えて挿入すると、溝形
成具１の翼刃４が、孔６の内壁面を削るが如く挿入して
いき、もって孔内壁面に溝（スリット）７を形成するこ
とになるのである。この場合、孔６に挿入する翼刃４の
方向は、前記孔６を中心に、脆性物体５に形成せんとす
る亀裂８の方向に合わせて挿入するのである。このよう
に満７の形成が終了した後に、前記孔６内に膨張性物質
又は火薬類を充填すると、前記溝７方向に向けて脆性物
体５に亀裂８が生じ、破壊することになるのである。す
なわち、膨張性物質を用いた場合には、それ自体が経時
的に膨張して前記孔６内に膨張圧が生じ、これによって
溝７の部分に応力が集中して脆性物体５を破壊させるの
である。また火薬類を用いた場合には、これに点火する
と、同様に溝７の部分から脆性物体５を破壊させるので
ある。ここに用いる膨張性物質は、従来から公知の膨張
性破壊剤であり、例えば、石灰系、カルシウムサルフォ
アルミネート系、仮焼ドロマイト系、マグネシア系、普
通ポルトランドセメント−高炉スラグ−ボーキサイト−
石こう系、アルミナセメント−石灰−石こう系、カルシ
ウムアルミネート−石灰−石こう系等のセメント膨張剤
であり、この中にはｒプライスター１ （小野田セメン
ト株式会社製の商品名）も含まれる。また火薬類につい
ても従来から公知のダイナマイト、黒色火薬、コンクリ
ート破砕器等である。<Function (2)> Next, the function of the present invention will be described. A hole 6 of a desired depth is bored in the brittle object 5 using the above-mentioned drilling machine. Thereafter, the groove forming tool 1 is attached to the drilling shaft 3 of the same drilling machine as described above, and is inserted into the hole 6 by impact. Generally, the drilling shaft 3 of the above-mentioned crawler drill, hand hammer core drill, etc.
is constructed to perform a rotational action and a percussion action, and is constructed so that the rotational action and percussion action can be performed simultaneously, or only one action can be performed by switching. Therefore, when drilling a hole 6 in the brittle object 5, a drilling bit is attached to the drilling shaft 3, and the drilling shaft 3 (drilling bit) is rotated while performing a striking action to perform the drilling. After this is completed, the groove forming tool 1 is attached in place of the drilling bit and inserted into the drilled hole 6. In this case, when the rotating action is stopped and only the striking action is performed, the wing blade 4 of the groove forming tool 1 is inserted as if scraping the inner wall surface of the hole 6, thereby creating a groove in the inner wall surface of the hole. (slit) 7 is formed. In this case, the direction of the blade blade 4 to be inserted into the hole 6 is aligned with the direction of the crack 8 to be formed in the brittle object 5 with the hole 6 as the center. If the hole 6 is filled with an expandable substance or explosives after the formation of the groove 7 is completed in this way, a crack 8 will occur in the brittle object 5 in the direction of the groove 7, resulting in destruction. . That is, when an expandable substance is used, it expands over time and expansion pressure is generated in the hole 6, which causes stress to concentrate in the groove 7 and destroy the brittle object 5. be. In addition, when explosives are used, when they are ignited, the brittle object 5 is similarly destroyed from the grooves 7. The expandable substance used here is a conventionally known expandable destructive agent, such as lime-based, calcium sulfoaluminate-based, calcined dolomite-based, magnesia-based, ordinary Portland cement - blast furnace slag - bauxite.
These are cement expanding agents such as gypsum, alumina cement-lime-gypsum, and calcium aluminate-lime-gypsum, including R-Plystar 1 (trade name, manufactured by Onoda Cement Co., Ltd.). Explosives include conventionally known dynamite, black powder, concrete crusher, and the like.
く作 用 ■〉
ここに示す作用は、主として特許請求の範囲第５項に示
す発明に関するものであり、第５図（Ａ）、（Ｂ）に示
すように、脆性物体５における破砕すべき範囲を画する
位置に溝状空間部９を形成するのである。ここに形成す
る溝状空間部９の形状は特に限定されるものではない。Effect ■> The effect shown here mainly relates to the invention set forth in claim 5, and as shown in FIGS. 5(A) and (B), the area to be crushed in the brittle object 5 is A groove-like space 9 is formed at a position that demarcates the area. The shape of the groove-like space 9 formed here is not particularly limited.
例えば同図（Ａ）に示すように直線状であってもよく、
また同図（Ｂ）に示すように曲線状であってもよい。こ
の曲線状に溝状空間部９を形成することは、トンネル掘
さく工事において特に有効である。またこの溝状空間部
９は自由面を形成する作用もある。すなわち、脆性物体
５が巨大で広い面積を有する場合、これを破砕しようと
すると、それ自体破砕に対する抵抗力となって破砕の促
進が阻害され、破砕がはなはだ困難となる。したがって
この溝状空間部９により自由面を形成することによって
、破砕面積を小さい単位に区画し、この区画内を破砕す
ると、破砕するために穿設した孔６から前記溝状空間部
９までの距離、すなわち孔６と自由面との距離が短距離
となるため、この孔６中に充填する破砕剤である膨張性
物質又は火薬類の破砕力はさして大でなくとも十分な破
砕実効を得ることができる。この溝状空間部９の形成手
段はいかなるものでもよいが、例えば孔６及びこれに対
する溝７の形成手段と同じであってもよい。すなわちク
ローラ−ドリル等の穿孔機を用いて脆性物体５に所望の
深さの孔６゛を穿設する。For example, as shown in the same figure (A), it may be linear,
Alternatively, it may have a curved shape as shown in FIG. Forming the groove-shaped space 9 in this curved shape is particularly effective in tunnel excavation work. This groove-like space 9 also has the function of forming a free surface. That is, when the brittle object 5 is huge and has a large area, if an attempt is made to crush it, the brittle object itself becomes a resistance force against crushing, inhibiting the acceleration of crushing, and making crushing extremely difficult. Therefore, by forming a free surface with this groove-shaped space 9, the crushing area is divided into small units, and when the inside of this division is crushed, from the hole 6 drilled for crushing to the groove-shaped space 9. Since the distance, that is, the distance between the hole 6 and the free surface is short, a sufficient crushing effect can be obtained even if the crushing force of the expanding substance or explosives that is the crushing agent filled in the hole 6 is not very large. be able to. Any means may be used to form the groove-like space 9, and for example, it may be the same as the means for forming the hole 6 and the groove 7 therefor. That is, a hole 6' of a desired depth is drilled in the brittle object 5 using a drilling machine such as a crawler drill.
その後、前記と同じ穿孔機の穿孔軸３に溝形成具１を装
着して前記の孔６°に打撃的に挿入する。Thereafter, the groove forming tool 1 is attached to the drilling shaft 3 of the same drilling machine as described above, and is inserted into the hole 6° by impact.
より詳しくは、前記穿孔機の穿孔軸３に穿孔ビットを装
着して、この穿孔軸３を回転せしめながら打撃作用を行
って穿孔し、これが済んだ後には、穿孔ビットに代えて
溝形成具１を装着して、穿設された孔６°に挿入するの
である。この場合、回転作用は止め、打撃作用のみを行
なうように切り換えて挿入すると、溝形成具１の翼刃４
が、孔６°の内壁面を削るが如く挿入していき、もって
孔６°内壁面に溝７°を形成することになるのである。More specifically, a drilling bit is attached to the drilling shaft 3 of the drilling machine, and while the drilling shaft 3 is rotated, a striking action is performed to perform the drilling, and after this is completed, the groove forming tool 1 is used instead of the drilling bit. and insert it into the drilled hole at 6°. In this case, if the rotational action is stopped and the blade blade of the groove forming tool 1 is inserted by switching to only a striking action,
However, the inner wall surface of the hole 6° is inserted as if being scraped, thereby forming a groove 7° on the inner wall surface of the hole 6°.
この場合、互いに隣り合う溝７°が、この溝７°の形成
時に連通ずるように行うのであり、そのためには翼刃４
の突出長を考慮して、番孔６°の間隔を短いものとする
。このようにして溝状空間部９を形成した後に、この溝
状空間部９によって仕切られた脆性物体５の破砕は、作
用Ｉにおいて述べたところと変わるところがない。In this case, the grooves 7° that are adjacent to each other are formed so that they communicate with each other when forming the grooves 7°.
Considering the protrusion length of the hole, the interval of 6° of the hole is made short. After the groove-like space 9 is formed in this way, the crushing of the brittle object 5 partitioned by the groove-like space 9 is the same as described in Operation I.
く比較例 工〉
ここに示す比較例は、前述の従来例とこの発明との比較
に関するものであり、第２図に示すように−辺が４０ｃ
ｍのコンクリート立方体ａ、５を２個用意し、同図（Ａ
）に示すように一方のコンクリート立方体ａの中央には
、直径４２ ｍｍ、深さ３０ｃｍの円筒状の孔すを穿設
し、同図（Ｃ）に示すように、他方のコンクリート立方
体には、前記と同一の孔６を穿設するとともに、この発
明にかかる溝形成具１（但し、翼刃４が１８０°間隔で
２枚のもの）によって破砕方向に溝７を形成した。そし
てこれらにともに水比３０％で練りまぜた同一かつ同量
の石灰系膨張性破砕剤（ｆプライスターＪ （前掲）使
用）のスラリーを充填したところ、従来例を示す同図（
Ｂ）においては、充填後１２時間を経過して大略１２０
°の角度を有する３本の亀裂Ｃが生じたが、本発明を示
す同図（Ｄ）においては、充填後８時間を経過して溝方
向に略直線状の亀裂８が生じ、かつ２分割された。Comparative Example The comparative example shown here relates to a comparison between the above-mentioned conventional example and the present invention, and as shown in FIG.
Prepare two concrete cubes a and 5 of m, and make the same figure (A
), a cylindrical hole with a diameter of 42 mm and a depth of 30 cm was drilled in the center of one concrete cube a, and as shown in the same figure (C), a cylindrical hole was drilled in the center of one concrete cube a. The same hole 6 as above was drilled, and a groove 7 was formed in the crushing direction using the groove forming tool 1 according to the present invention (provided that the blade blades 4 were two pieces at an interval of 180°). When both of these were filled with slurry of the same and the same amount of lime-based expansive crushing agent (using f-plaister J (listed above)) mixed at a water ratio of 30%, the same figure showing the conventional example (
In B), approximately 120 hours have passed after filling.
Three cracks C having an angle of 1° were generated, but in the same figure (D) showing the present invention, approximately linear cracks 8 were formed in the direction of the groove 8 hours after filling, and the cracks were divided into two. It was done.
く比較例 ■〉
ここに示す比較例も前述した従来例とこの発明との比較
に関するものであるが、第３図に示すように、−辺が６
０ｃｍのコンクリート立方体ａ。Comparative Example ■〉 The comparative example shown here also relates to a comparison between the conventional example described above and the present invention, but as shown in FIG.
0cm concrete cube a.
５を２個用意し、同図（Ａ）に示すように一方のコンク
リート立方体ａの中央に、直径４２ ｍｍ。5 with a diameter of 42 mm in the center of one concrete cube a as shown in the same figure (A).
深さ５０ｃｍの円筒状の孔すを穿設し、同図（Ｃ）に示
すように、他方のコンクリート立方体５には、前記と同
一の孔６を穿設するとともに、この発明にかかる溝形成
具１（但し、翼刃４が９０°間隔で４枚のもの）によっ
て破砕方向に溝７を形成した。そしてこれらにともに、
水比３０％で練りまぜた同一かつ同量のｒプライスター
ｊ（前掲）のスラリーを充填したところ、従来例を示す
同（Ｂ）においては充填後１４時間を経過して、やはり
１２０°の角度を有する３本の亀裂Ｃが生じたが、本発
明を示す同図（Ｄ）においては、充填後１０時間を経過
して溝７方向に亀裂８が発生し始め、その後１時間後に
は４分割された。A cylindrical hole with a depth of 50 cm is drilled, and as shown in FIG. Grooves 7 were formed in the crushing direction using tool 1 (with four blades 4 spaced apart at 90 degrees). And together with these,
When filled with the same and the same amount of slurry of R-Pristar J (listed above) mixed with a water ratio of 30%, in the conventional example (B), the angle of 120° was still 14 hours after filling. Three angular cracks C were generated, but in the same figure (D) showing the present invention, cracks 8 started to occur in the direction of the groove 7 after 10 hours had passed after filling, and 4 cracks C had appeared after 1 hour. Divided.
く比較例 ■〉
ここに示す比較例は、前述の従来例とこの発明との比較
に関するものであり、第４図に示すように一辺が４０ｃ
ｍのコンクリート立方体ａ、５を２個用意し、同図（Ａ
）に示すように一方のコンクリート立方体ａの中央には
、直径４２ｍｍ、深さ３０ｃｍの円筒状の孔すを穿設し
、同図（Ｃ）に示すように他方のコンクリート立方体５
には、前記と同一の孔６を穿設するとともに、この発明
にかかる溝形成具１（但し、翼刃４が１８０°間隔で２
枚のもの）によって破砕方向に溝７を形成した。そして
これらにともにコンクリート破砕器を１本詰め込んだ後
、砂でタンピングして点火したところ、従来例を示す同
図（Ｂ）においては５個に分割されたが、本発明を示す
同図（Ｄ）においては溝７方向を境に２個に分割された
。Comparative Example ■〉 The comparative example shown here is a comparison between the above-mentioned conventional example and this invention, and as shown in Fig. 4, one side is 40 cm.
Prepare two concrete cubes a and 5 of m, and make the same figure (A
), a cylindrical hole with a diameter of 42 mm and a depth of 30 cm is drilled in the center of one concrete cube a, and as shown in the same figure (C), a cylindrical hole is bored in the center of one concrete cube a.
The same holes 6 as described above are bored in the groove forming tool 1 according to the present invention (however, the blade blades 4 are formed twice at 180° intervals).
Grooves 7 were formed in the crushing direction using the same material. After packing one concrete crusher into each of these, tamping it with sand and igniting it, it was divided into five pieces in the same figure (B) showing the conventional example, but in the same figure (D) showing the present invention. ), it was divided into two parts with the direction of groove 7 as the boundary.
〈発明の効果〉
前記のようにこの発明にがかる脆性物体の溝形成具及び
脆性物体の破砕方法によれば、クローラ−ドリル、ハン
ドハンマー コアードリル等の穿孔機の穿孔軸に着脱自
在に形成し、かつ外周面に翼刃を突設して、脆性物体に
前記穿孔機により穿孔し、その後この孔に前記穿孔機の
穿孔軸に着脱自在に形成し、かつ外周面に翼刃を突設し
た溝形成具により破砕方向に溝を形成し、さらにこの孔
中に破砕剤を充填して破砕するようにするので、亀裂及
び破砕の方向を希望する方向に予め特定することができ
、したがって設計通りの破砕を行なうことができ、しか
も溝の形成によってこの溝に応力が集中するため、破砕
時間の短縮化を促進することができる等、種々の効果を
有するのである。<Effects of the Invention> As described above, according to the groove forming tool for a brittle object and the method for crushing a brittle object according to the present invention, the groove forming tool for a brittle object and the method for crushing a brittle object according to the present invention are removably formed on the drilling shaft of a drilling machine such as a crawler drill, a hand hammer, and a core drill. and a groove in which a wing blade is protruded from the outer circumferential surface, a hole is drilled in the brittle object by the drilling machine, the hole is then formed in the hole so that it can be attached to and detached from the drilling shaft of the drilling machine, and the blade blade is protruded from the outer circumferential surface. Since a groove is formed in the crushing direction using a forming tool, and a crushing agent is filled into this hole to cause crushing, the direction of cracks and fractures can be specified in advance in the desired direction, and therefore, the direction of cracking and fracture can be specified in advance. It is possible to perform crushing, and since the stress is concentrated in the grooves due to the formation of the grooves, it has various effects such as being able to promote shortening of the crushing time.
またこの脆性物体の破砕部分周辺に溝状空間部を形成す
ることによって、いわゆる二自由面を形成し、破砕時の
抵抗力を軽減させ、破砕の促進化を図ることができると
いう効果も有するのである。In addition, by forming a groove-like space around the fractured part of this brittle object, so-called two free surfaces are formed, which reduces the resistance force during crushing and accelerates the crushing. be.
図面はこの発明にがかる脆性物体の溝形成具及び脆性物
体の破砕方法の実施例を示すもので、第１図（Ａ）は溝
形成具の斜視図、同図（Ｂ）は溝形成具の他側を示す斜
視図、第２図、第３図及び第４図はこの発明を従来例と
の比較例を示す斜視図で、これらのうちいずれも（Ａ）
は従来例の穿孔状態、（Ｂ）は従来例の亀裂が生じた状
態、（Ｃ）はこの発明の穿孔状態、（Ｄ）はこの発明の
亀裂が生じた状態、第５図（Ａ）、（Ｂ）はそれぞれ自
由面となる溝を形成した状態の正面図である。
１・・・溝形成具
２・・・穴
３・・・穿孔軸
４・・・翼刃
５・・・脆性物体（コンクリート立方体）６・・・孔
７・・・溝（スリット）
８・・・亀裂
９・・・溝状空間部
ばか１名
第
図
（Ａ）
（Ｂ）
第
図The drawings show an embodiment of a groove forming tool for a brittle object and a method for crushing a brittle object according to the present invention. FIG. 1 (A) is a perspective view of the groove forming tool, and FIG. 1 (B) is a perspective view of the groove forming tool. A perspective view showing the other side, and FIGS. 2, 3, and 4 are perspective views showing comparative examples of the present invention with the conventional example.
5(A) is the perforation state of the conventional example, (B) is the state of the conventional example with cracks, (C) is the perforation state of the present invention, and (D) is the state of the present invention with cracks. (B) is a front view of a state in which grooves serving as free surfaces are formed. 1...Groove forming tool 2...Hole 3...Drilling shaft 4...Blade blade 5...Brittle object (concrete cube) 6...Hole 7...Groove (slit) 8...・Crack 9...Groove-shaped space 1 idiot Figure (A) (B) Figure
Claims (1)
等の穿孔機の穿孔軸に着脱自在に形成し、かつ外周面に
翼刃を突設したことを特徴とする脆性物体の溝形成具。 ２、翼刃の断面を略三角形状に形成した特許請求の範囲
第１項記載の脆性物体の溝形成具。 ３、脆性物体に、クローラードリル、ハンドハンマー、
コアードリル等の穿孔機により穿孔し、その後この孔に
、前記穿孔機の穿孔軸に着脱自在に形成し、かつ外周面
に翼刃を突設した溝形成具により破砕方向に溝を形成し
、さらにこの孔中に破砕剤を充填して破砕するようにし
たことを特徴とする脆性物体の破砕方法。 ４、脆性物体内に形成した連続する溝状空間部によって
画された脆性物体に、クローラードリル、ハンドハンマ
ー、コアードリル等の穿孔機により穿孔し、その後この
孔に、前記穿孔機の穿孔軸に着脱自在に形成し、かつ外
周面に翼刃を突設した溝形成具により破砕方向に溝を形
成し、さらにこの孔中に破砕剤を充填して破砕するよう
にしたことを特徴とする脆性物体の破砕方法。 ５、破砕剤を膨張性物質とした特許請求の範囲第３項又
は第４項記載の脆性物体の破砕方法。 ６、破砕剤をダイナマイト等の火薬類とした特許請求の
範囲第３項又は第４項記載の脆性物体の破砕方法。 ７、連続する溝状空間部を、クローラードリル、ハンド
ハンマー、コアードリル等の穿孔機によって小間隔に穿
孔し、その後この孔に、前記穿孔機の穿孔軸に着脱自在
に形成し、かつ外周面に翼刃を突設した溝形成具により
溝を形成するとともに、これら相隣り合う溝が貫通する
ことによって形成されるようにした特許請求の範囲第４
項、第５項又は第６項記載の脆性物体の破砕方法。[Claims] 1. A groove forming tool for a brittle object, which is formed to be detachably attached to the drilling shaft of a drilling machine such as a crawler drill, hand hammer, core drill, etc., and has blade blades protruding from the outer peripheral surface. . 2. A groove forming tool for a brittle object according to claim 1, wherein the wing blade has a substantially triangular cross section. 3. For brittle objects, use a crawler drill, hand hammer,
A hole is drilled using a drilling machine such as a core drill, and then a groove is formed in the hole in the crushing direction using a groove forming tool that is removably formed on the drilling shaft of the drilling machine and has blade blades protruding from the outer circumferential surface. A method for crushing a brittle object, characterized in that the hole is filled with a crushing agent to crush the object. 4. Drill a hole in the brittle object defined by a continuous groove-like space formed in the brittle object using a drilling machine such as a crawler drill, hand hammer, or core drill, and then attach and detach the drilling shaft of the drilling machine to this hole. A brittle object characterized in that a groove is formed in the crushing direction using a groove forming tool that can be freely formed and has wing blades protruding from the outer peripheral surface, and the hole is further filled with a crushing agent to crush it. crushing method. 5. A method for crushing a brittle object according to claim 3 or 4, wherein the crushing agent is an expandable substance. 6. A method for crushing a brittle object according to claim 3 or 4, wherein the crushing agent is explosives such as dynamite. 7. Drill continuous groove-like spaces at small intervals using a drilling machine such as a crawler drill, hand hammer, or core drill, and then form holes in the holes so that they can be attached to and detached from the drilling shaft of the drilling machine, and on the outer peripheral surface. Claim 4: The groove is formed by a groove forming tool having a protruding wing blade, and the grooves are formed by penetrating these adjacent grooves.
The method for crushing a brittle object according to item 1, 5 or 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17489788 | 1988-07-15 | ||
| JP63-174897 | 1988-07-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02125088A true JPH02125088A (en) | 1990-05-14 |
| JP2973121B2 JP2973121B2 (en) | 1999-11-08 |
Family
ID=15986601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1113771A Expired - Fee Related JP2973121B2 (en) | 1988-07-15 | 1989-05-08 | Crushing method for brittle objects |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0350676A1 (en) |
| JP (1) | JP2973121B2 (en) |
| AU (1) | AU3703189A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5145503B1 (en) * | 2012-02-28 | 2013-02-20 | 株式会社神島組 | Crushing method |
| CN103817805A (en) * | 2014-03-18 | 2014-05-28 | 李衍远 | Method for cutting flat stone through long crack propagation |
| JP6098027B1 (en) * | 2016-08-09 | 2017-03-22 | 株式会社神島組 | Crushing method and crushing tool used in the crushing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4329582C1 (en) * | 1993-09-02 | 1994-12-01 | Herbert Rittinger | Device for making longitudinal notches in the wall of a borehole |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5930879A (en) * | 1982-08-11 | 1984-02-18 | Nissan Chem Ind Ltd | Frothing molded product |
| JPS6136620U (en) * | 1984-08-06 | 1986-03-06 | フランスベッド株式会社 | Wake-up bed device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR12434E (en) * | ||||
| FR405498A (en) * | 1909-07-19 | 1909-12-31 | Adolphe Rossi | Process and tools for slicing the stone in the mass or in blocks already extracted |
| FR1375448A (en) * | 1963-11-22 | 1964-10-16 | Method and plant for cutting rocks or blocks from hard material | |
| JPS601904B2 (en) * | 1979-03-20 | 1985-01-18 | 太平洋セメント株式会社 | Destruction agent for brittle objects |
-
1989
- 1989-05-08 JP JP1113771A patent/JP2973121B2/en not_active Expired - Fee Related
- 1989-06-21 EP EP89111317A patent/EP0350676A1/en not_active Withdrawn
- 1989-06-26 AU AU37031/89A patent/AU3703189A/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5930879A (en) * | 1982-08-11 | 1984-02-18 | Nissan Chem Ind Ltd | Frothing molded product |
| JPS6136620U (en) * | 1984-08-06 | 1986-03-06 | フランスベッド株式会社 | Wake-up bed device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5145503B1 (en) * | 2012-02-28 | 2013-02-20 | 株式会社神島組 | Crushing method |
| CN103817805A (en) * | 2014-03-18 | 2014-05-28 | 李衍远 | Method for cutting flat stone through long crack propagation |
| JP6098027B1 (en) * | 2016-08-09 | 2017-03-22 | 株式会社神島組 | Crushing method and crushing tool used in the crushing method |
| JP2018025006A (en) * | 2016-08-09 | 2018-02-15 | 株式会社神島組 | Crushing method, and crushing tool to be used in the crushing method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0350676A1 (en) | 1990-01-17 |
| JP2973121B2 (en) | 1999-11-08 |
| AU3703189A (en) | 1990-01-18 |
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