JPS61155589A - Drilling method of rock - Google Patents

Drilling method of rock

Info

Publication number
JPS61155589A
JPS61155589A JP27357584A JP27357584A JPS61155589A JP S61155589 A JPS61155589 A JP S61155589A JP 27357584 A JP27357584 A JP 27357584A JP 27357584 A JP27357584 A JP 27357584A JP S61155589 A JPS61155589 A JP S61155589A
Authority
JP
Japan
Prior art keywords
holes
excavated
rock
crushing
drilling
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
Application number
JP27357584A
Other languages
Japanese (ja)
Other versions
JPH0319356B2 (en
Inventor
四郎 石井
久保田 八郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiheiyo Cement Corp
Original Assignee
Onoda Cement Co Ltd
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 Onoda Cement Co Ltd filed Critical Onoda Cement Co Ltd
Priority to JP27357584A priority Critical patent/JPS61155589A/en
Publication of JPS61155589A publication Critical patent/JPS61155589A/en
Publication of JPH0319356B2 publication Critical patent/JPH0319356B2/ja
Granted legal-status Critical Current

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  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 この発明は、−自由面しかない岩盤やコンクリート等の
掘削対象物体の表面にトンネルやビット等を迅速かつ容
易に形成できる岩盤等の掘削方法に関する。
[Detailed Description of the Invention] <Industrial Application Field> The present invention provides: - a method for excavating rock, etc., which can quickly and easily form a tunnel, bit, etc. on the surface of an object to be excavated, such as rock or concrete, which has only a free surface; Regarding.

〈従来の技術〉 岩盤やコンクリートなど一自由面しかない掘削対象物や
、2自白面あっても硬い岩質、鉄筋コンクリートなどを
掘削するときは、予め穿孔機を用いて掘削対象物体の表
面に孔を穿設して断面欠損部分を大きくして見掛けの強
度を小さくした後、プレーカー等を使用して破砕する工
法が行われていた。
<Conventional technology> When excavating an object that has only one free surface, such as bedrock or concrete, or hard rock or reinforced concrete that has two free surfaces, it is necessary to use a drilling machine to drill holes in the surface of the object in advance. The method used was to drill a hole to increase the cross-sectional defect and reduce the apparent strength, and then crush it using a breaker or the like.

特に1無発破トンネル工法や、道路、鉄道が近い場所で
岩盤掘削する場合は、火薬を使用することが難かしいた
め、上述の工法が採用されていた。
In particular, when using the No-Blast Tunneling Method or when excavating rock in areas close to roads and railways, it is difficult to use explosives, so the above-mentioned method was adopted.

また、無発破工法として、近年、膨脹性破砕剤スラリー
を使用した破砕工法が行われているが、−自由面しかな
い掘削対象物体においては拘束自由度が大きく、破砕が
困難であるため各種スリット成型方法がとられるが(そ
えぐ9工法、■カット工法、親子ビット工法等)、一般
には経済性や工期などの点から採用されていない。
In addition, as a non-blasting method, a crushing method using an expandable crushing agent slurry has been used in recent years. Molding methods are used (Soegu 9 method, Cut method, parent-child bit method, etc.), but these are generally not used due to economic efficiency and construction time.

〈発明が解決しようとする問題点〉 本発明は、従来の一自由表面しかない岩盤等の掘削方法
における上述の問題点を除くためKなされたものであっ
て、硬い岩盤、コンクリート等の破砕における掘削工事
を容易にするため穿孔機による穿孔と穿孔内に注入した
膨脹性破砕剤の膨張による歪応力の利用とブレーカ−等
による打撃力を加えて岩盤、コンクリート等を芯抜きし
、芯抜きされた部分を中心としてさらに掘削対象物体を
所定の形状に迅速かつ容易にトンネルやビット等に掘削
する岩盤等の掘削方法を提供しようとするものである。
<Problems to be Solved by the Invention> The present invention has been made in order to eliminate the above-mentioned problems in the conventional excavation method for rock, etc., which has only one free surface. To facilitate the excavation work, the core of rock, concrete, etc. is cored by using the strain stress caused by the expansion of the expandable crushing agent injected into the hole by drilling with a drilling machine, and by applying the impact force with a breaker, etc. The object of the present invention is to provide a method for excavating rock, etc., for quickly and easily excavating an object to be excavated into a predetermined shape into a tunnel, a bit, etc., centering on the excavated portion.

く問題点を解決するための手段〉 上記目的を達成するため、本発明は掘削対象物体の表面
に穿孔機で所定の間隔で複数個の孔を穿設し、穿設した
複数個の孔のうちの一部の孔に膨脹性破砕剤スラリーを
注入充填した後、当該注入充填膨脹性破砕剤スラリーの
膨張正により掘削対象物体に歪応力を与えると共に、掘
削対象物体に打撃力を加えて掘削対象物体の一部を溝状
又は柱状に芯抜きし、芯抜き部分を中心としてさらに掘
削対象物体を所定の形状に掘削することを特徴とするも
のである。
Means for Solving the Problems> In order to achieve the above object, the present invention uses a drilling machine to drill a plurality of holes at predetermined intervals on the surface of an object to be excavated, and After injecting and filling the expandable crushing agent slurry into some of the holes, strain stress is applied to the object to be excavated due to the positive expansion of the injected and filled expandable crushing agent slurry, and a striking force is applied to the object to be excavated. This method is characterized in that a part of the target object is cored in the shape of a groove or a column, and the target object is further excavated into a predetermined shape around the cored part.

上記岩盤等の掘削方法においては、掘削対象物体の表面
に穿孔機で穿設する孔は例えば、塔間装置いて、一定♂
込孔複数個を周期的なパターンを有するように穿設され
る。
In the above-mentioned method for excavating rock, etc., the hole drilled on the surface of the object to be excavated with a drilling machine is, for example, a machine between towers, and a constant ♂
A plurality of holes are drilled in a periodic pattern.

マ九、このよ5JCして穿設され九複数個の孔のうち、
膨脹性破砕剤を注入すべき孔は、芯抜きの形状に応じて
たとえば、第1図(A) 、 (B)。
Of the nine holes that were recently drilled in 5JC,
The holes into which the expandable crushing agent is to be injected are shown in FIGS. 1A and 1B, for example, depending on the shape of the core.

・・・、(E)K示すように、芯抜き部の外延部Klj
i接する2列以上の各列の孔又は各列の一定の数の孔毎
に周期的に膨脹性破砕剤が注入される(・印は膨脹性破
砕剤注入充填孔、0印は空孔を表わす。)。
..., as shown in (E)K, the outer extension part Klj of the cored part
Expandable crushing agent is injected periodically into each of two or more adjacent rows of holes or a fixed number of holes in each row. ).

く作用〉 以上のように、岩盤等の掘削対象物体の表面に1穿孔機
による空孔(膨脹性破砕剤スラI7−充填孔以外の孔)
と注入膨脹性破砕剤の膨脹圧による歪応力と油圧プレー
カーなどによる打撃力により、掘削対象物体に容易に芯
抜きすることができる。
As described above, holes (holes other than the expandable crushing agent slurry I7-filling holes) are formed by the drilling machine on the surface of the object to be excavated, such as rock.
The object to be excavated can be easily cored by the strain stress caused by the expansion pressure of the injected expandable crushing agent and the impact force by a hydraulic breaker.

この結果、芯抜き以後の拡幅および掘進作業は、ブレー
カー又は膨脹性破砕剤あるいは空孔の利用によるブレー
カ−効率の向上によシ掘削が容易になる。
As a result, the widening and excavation work after coring is facilitated by improving the breaker efficiency through the use of breakers, expandable crushing agents, or holes.

〈実施例〉 つぎに、本発明の代表的な実施例について述べる。<Example> Next, typical embodiments of the present invention will be described.

実施例1 一軸圧縮強度1800 ’/cn!の花崗岩地帯にケー
ブル埋設用の、幅1.5ms深さ1.4mの溝を掘削す
る工事について説明する。
Example 1 Unconfined compressive strength 1800'/cn! This article explains the construction work to excavate a trench 1.5 ms wide and 1.4 m deep for burying cables in a granite area.

上記花崗岩地帯の溝掘削部分に、第2図の各行、A1〜
A6にそれぞれ穴al bl CI ”’ 1eを径6
5mm、孔長1.5m、孔間隔30cmで穿設した後、
これら33個の孔のうち、A3および應4列の穴に、静
的破砕剤(商品名=「プライスター」;小野田セメント
(株)社製)を水比30チで練り混ぜて得られたスラリ
ーを注入充填すると、15時間後に1充填孔を中心とし
て周辺に0.5〜1.0 cmの亀裂が発生した。直ち
に大型油圧ブレーカーで、41〜A2又は轟5〜扁6の
列の穿設孔を中心に、順次打撃を加えたところ、破砕効
率は12d/時であ夕、1日28扉の掘進を行うことが
できた。
In the trench excavation part of the granite area mentioned above, each row of Fig. 2, A1 ~
Hole al bl CI "' 1e in each A6 diameter 6
After drilling 5 mm, hole length 1.5 m, and hole spacing 30 cm,
Among these 33 holes, a static crushing agent (trade name = "Plystar"; manufactured by Onoda Cement Co., Ltd.) was mixed in the A3 and 4 rows of holes at a water ratio of 30%. When the slurry was injected and filled, a crack of 0.5 to 1.0 cm was generated around one filling hole after 15 hours. Immediately, using a large hydraulic breaker, blows were applied sequentially to the drilled holes in rows 41-A2 or Todoroki 5-6, resulting in a crushing efficiency of 12 d/hour. I was able to do that.

実施例2 実施例1の工事を行ったと同じ工事現場において、第2
図に示した/I63、/I64列の間の相対する孔a 
t a : b p b : c p c : d r
 d計8孔にそれぞれ、プライスタースラリーを実施例
1と同様の方法で注入充填し、20時間後に大型油圧ブ
レーカ−で破砕したところ、充填孔周辺に60a++〜
100cmの範囲は10〜12醪/時の破砕効率で破砕
が可能となった。この破砕によって、2自由面ができた
ため、その後の溝の延長破砕工事において、大聖油圧ブ
レーカ−によって、4〜(、m”7時と破砕効率が向上
した。
Example 2 At the same construction site where the construction in Example 1 was carried out, a second
Opposing holes a between the /I63 and /I64 rows shown in the figure
t a : b p b : c p c : dr
Plystar slurry was injected and filled into a total of 8 holes in the same manner as in Example 1, and crushed with a large hydraulic breaker after 20 hours.
A range of 100 cm could be crushed with a crushing efficiency of 10 to 12 moromi/hour. This crushing created two free surfaces, so in the subsequent trench extension crushing work, the crushing efficiency was improved to 4~(,m''7) using the Daisei Hydraulic Breaker.

実施例3 −軸圧縮強度1200〜1600ゆ/ctAの安山岩地
帯におけるトンネル掘削工事において、トンネル切羽断
面中央部分に、大型油圧クローラ−ドリル(東京流機製
、CD−3型)を用いて、孔径65m+、孔長2.5m
の孔を第3図に示すように、1.5mX0.75mの面
積内に、下向き10度の角度で傾いた孔を孔間隔25c
mで28個穿孔した後、ただちに、A1、A2列の孔に
1靜的破砕剤(商品名「プライスター」、小野田セメン
ト(株)社製)を水比25チで練シ混せた破砕剤スラリ
ーを、ポンプを用いて流入充填し、10時間後に大型油
圧ブレーカーで打撃破砕したところ、30分で破砕し、
芯抜が可能となった、 芯抜きされた後の拡幅破砕工事においては、2自由面が
設定されるため、穿孔間隔を40〜80cmに拡大した
孔を穿孔して大型油圧ブレーカ−で打撃して行くか、油
圧割岩機、静的破砕剤を用いて拡幅破砕を実施する在来
工法で破砕工事を進める。
Example 3 - In tunnel excavation work in an andesite zone with an axial compressive strength of 1200 to 1600 Yu/ctA, a large hydraulic crawler drill (manufactured by Tokyo Ryuuki, CD-3 type) was used to drill a hole with a diameter of 65 m+ at the center of the cross section of the tunnel face. , hole length 2.5m
As shown in Figure 3, holes tilted downward at a 10 degree angle are placed within an area of 1.5m x 0.75m with a hole spacing of 25c.
Immediately after drilling 28 holes with a water ratio of 25 mm, a silent crushing agent (trade name ``Plystar'', manufactured by Onoda Cement Co., Ltd.) was mixed into the holes in the A1 and A2 rows at a water ratio of 25 mm. When the agent slurry was inflow-filled using a pump and crushed by impact using a large hydraulic breaker 10 hours later, it was crushed in 30 minutes.
In the widening and crushing work after the core has been cored, two free surfaces are set, so holes with a gap of 40 to 80 cm are drilled and struck with a large hydraulic breaker. Alternatively, the crushing work will be carried out using the conventional method of widening and crushing using a hydraulic rock splitter and static crushing agent.

なお、同一現場において、同様な穿孔パターンで穿設し
た孔を静的破砕剤を用いないで、穿孔したままの状態で
、打撃破砕を実施したところ、2時間30分を要した。
It should be noted that, at the same site, when a hole drilled with a similar drilling pattern was subjected to impact crushing without using a static crushing agent, it took 2 hours and 30 minutes.

比較例 また、−軸圧縮強度1800 kg/ctiの花崗岩地
帯において、実施例1同様、幅1.5m%深さ1,4m
の溝を掘削する際、岩石破砕部分をクローラドリルを用
いて、孔径65cm、孔長1.5mの孔を30CII+
間隔で穿孔し、穿設した孔を利用して大型油圧ブレーカ
−にて打撃したところ2mIZ時、1日12it、か掘
削進行できなかった。
Comparative Example Also, in a granite area with an axial compressive strength of 1800 kg/cti, as in Example 1, the width was 1.5 m% and the depth was 1.4 m.
When excavating a trench, a hole with a hole diameter of 65 cm and a hole length of 1.5 m was drilled at 30 CII+ using a crawler drill in the rock fractured part.
When holes were drilled at intervals and a large hydraulic breaker was used to strike the drilled holes, at 2 m IZ, the excavation could not proceed at 12 it per day.

〈発明の効果〉 以上の説明から明らかなように1岩盤やコンクリート等
のように硬い掘削対象物体の表面に、穿孔機で所定の間
隔で複数個の孔を穿設し、これら複数個の孔のうちの一
部の孔にのみ膨脹性破砕剤を注入充填した後、この破砕
剤の膨脹圧による応力を加えると共に、掘削対象物体に
打零力を与えるものであるから、破砕剤を使用しない掘
削方法に比べて破砕効率および掘削工事が極めて高くす
ることができる。
<Effects of the Invention> As is clear from the above explanation, a plurality of holes are bored at predetermined intervals on the surface of a hard object to be excavated, such as rock or concrete, using a drilling machine, and these holes are After injecting and filling only some of the holes with an expanding crushing agent, the expansion pressure of this crushing agent applies stress and a zero force is applied to the object to be excavated, so no crushing agent is used. Compared to drilling methods, the crushing efficiency and excavation work can be extremely high.

【図面の簡単な説明】[Brief explanation of drawings]

第1図(A)〜(E)は本発明の岩盤等の掘削方法の要
領を示す穿孔パターンおよび膨脹性破砕剤スラリー注入
要領を示す説明図、第2図は一実施例の掘削対象物体へ
の穿孔穿設要領説明図、第3図は掘削対象物体への穿孔
穿設要領を示す他の実施例図である。 特 許 出 願 人  小野田セメント株式会社代理人
 弁理士 光石士部(他1名) 第1 (A) ・  ・  ・  ・  ・  ・  ・O○  oo
oo。 O000000 (C) ooooo   ○ Oo  0 0  o  0 (E) O・  0  ・  0  ・ ・  ○  ・  0  ・  0 0  ・  0  ・  ○  ・ ・  ○  ・  0  ・  0 (B) ・   ・   ・   ・   ・ ・    ・    ・    ・ Q   OQ   ○ (D) ・  ・ o o ・  ・ 00 o o ・  ・  00 ・  ・ ・  ・ o O・  ・ OQ o 0 ・  ・ OO・  ・ 第2N ヒ Q    b    C 、o6   Φ  6 と く ト・・−Q、3−4 第3図 ・ ・ 5cm 一25cm’l −〇 6   0− NO,/ )   ○   Q  −−−−NO,3A   O−
NO,4 )   O0−−NO,5 Q    Q    −−−NO,6 ・   ・ −NO,/ ・   ・ −−−−NO,2 00−−−一〜03 0  0− No、4
Figures 1 (A) to (E) are explanatory diagrams showing the drilling pattern and the procedure for injecting the expandable crushing agent slurry into an object to be excavated according to an embodiment of the present invention. Fig. 3 is another embodiment diagram showing the procedure for drilling a hole in an object to be excavated. Patent applicant Onoda Cement Co., Ltd. agent Patent attorney Mitsuishi Shibu (and 1 other person) 1st (A) ・ ・ ・ ・ ・ ・ ・O○ oo
oo. O000000 (C) oooooo ○ Oo 0 0 o 0 (E) O・ 0 ・ 0 ・ ・ ○ ・ 0 ・ 0 0 ・ 0 ・ ○ ・ ・ ○ ・ 0 ・ 0 (B) ・ ・ ・ ・ ・ ・ ・ ・ ・Q OQ ○ (D) ・ ・ o o ・ ・ 00 o o ・ ・ 00 ・ ・ ・ ・ o O , 3-4 Figure 3... 5cm -25cm'l -〇6 0- NO,/ ) ○ Q -----NO,3A O-
NO, 4 ) O0--NO, 5 Q Q ---NO, 6 ・ ・ -NO, / ・ ・ ----NO, 2 00---1~03 0 0- No, 4

Claims (1)

【特許請求の範囲】[Claims] 掘削対象物体の表面に穿孔機で所定の間隔で複数個の孔
を穿設し、穿設した複数個の孔のうち一部の孔に膨脹性
破砕剤を注入充填した後、当該注入充填膨脹性破砕剤の
膨脹圧により掘削対象物体に歪応力を与えると共に、掘
削対象物体に打撃力を加えて掘削対象物体の一部を溝状
又は柱状に芯抜きし、芯抜き部分を中心としてさらに掘
削対象物体を所定の形状に掘削することを特徴とする岩
盤等の掘削方法。
After drilling a plurality of holes at predetermined intervals on the surface of the object to be excavated using a drilling machine and injecting and filling some of the holes among the plurality of drilled holes, the injection filling and expansion process is performed. The expansion pressure of the crushing agent applies strain stress to the object to be excavated, and a striking force is applied to the object to be excavated to core a part of the object to be excavated into a groove or column shape, and further excavate around the cored part. A method for excavating rock, etc., characterized by excavating a target object into a predetermined shape.
JP27357584A 1984-12-27 1984-12-27 Drilling method of rock Granted JPS61155589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27357584A JPS61155589A (en) 1984-12-27 1984-12-27 Drilling method of rock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27357584A JPS61155589A (en) 1984-12-27 1984-12-27 Drilling method of rock

Publications (2)

Publication Number Publication Date
JPS61155589A true JPS61155589A (en) 1986-07-15
JPH0319356B2 JPH0319356B2 (en) 1991-03-14

Family

ID=17529710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27357584A Granted JPS61155589A (en) 1984-12-27 1984-12-27 Drilling method of rock

Country Status (1)

Country Link
JP (1) JPS61155589A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018040167A (en) * 2016-09-07 2018-03-15 大成建設株式会社 Static crushing method
JP2019027223A (en) * 2017-08-02 2019-02-21 株式会社ガイアート Asphalt pavement removing method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7336673B1 (en) * 2023-04-24 2023-09-01 株式会社神島組 Crushing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5894598A (en) * 1981-11-28 1983-06-04 有限会社山開ロツク工業 Level drilling method and drill guide used therein
JPS58176396A (en) * 1982-04-09 1983-10-15 日本ロツクエンジニアリング株式会社 Drilling construction of tunnel
JPS59141694A (en) * 1983-02-01 1984-08-14 太平洋セメント株式会社 Detonation free tunnel drilling method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5894598A (en) * 1981-11-28 1983-06-04 有限会社山開ロツク工業 Level drilling method and drill guide used therein
JPS58176396A (en) * 1982-04-09 1983-10-15 日本ロツクエンジニアリング株式会社 Drilling construction of tunnel
JPS59141694A (en) * 1983-02-01 1984-08-14 太平洋セメント株式会社 Detonation free tunnel drilling method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018040167A (en) * 2016-09-07 2018-03-15 大成建設株式会社 Static crushing method
JP2019027223A (en) * 2017-08-02 2019-02-21 株式会社ガイアート Asphalt pavement removing method

Also Published As

Publication number Publication date
JPH0319356B2 (en) 1991-03-14

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