JPS59106693A - Hole enlarging type static crushing method - Google Patents
Hole enlarging type static crushing methodInfo
- Publication number
- JPS59106693A JPS59106693A JP21462882A JP21462882A JPS59106693A JP S59106693 A JPS59106693 A JP S59106693A JP 21462882 A JP21462882 A JP 21462882A JP 21462882 A JP21462882 A JP 21462882A JP S59106693 A JPS59106693 A JP S59106693A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- holes
- diameter
- static crushing
- small
- 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
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (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】 本発明は拡孔式静的破砕工法に関するものである。[Detailed description of the invention] The present invention relates to a hole-expanding static crushing method.
従来岩盤、コンクリート塊等に一定の穿孔をしてこれに
水との反応により体積膨張する物質と水との混合体を圧
入し、前記物質の水和膨張力によって岩盤、コンクリー
ト塊等を破壊する工法はすでに知られている。Conventionally, a certain amount of holes are made in rock, concrete blocks, etc., and a mixture of water and a substance that expands in volume due to reaction with water is injected into the holes, and the rock, concrete blocks, etc. are destroyed by the hydration expansion force of the substance. The construction method is already known.
以上のような工法における破砕剤を充填する孔は全長に
亙り等しい直径のものに限られていた。In the construction method described above, the holes to be filled with the crushing agent are limited to holes having the same diameter over the entire length.
しかし破砕力を増すために大孔径のものを用いるような
場合などでは噴出防止のための密封を施すにしても長さ
を非常に大きくしなければならず技術的にも経済的にも
困難があった。However, in cases where a large hole diameter is used to increase the crushing force, the length must be extremely large even if a seal is applied to prevent blowouts, which is technically and economically difficult. there were.
本発明は従来のかかる欠点に鑑み、先ず自由面カ・ら小
孔径の穿孔を行ない次に破砕剤の充填部のみを拡孔し、
密封は小孔部で行なわせるようにしたものである。In view of these conventional drawbacks, the present invention first drills a small hole in the free surface, then expands only the part filled with the crushing agent,
Sealing is performed at the small hole.
すなわち、本発明は三発明からなるものでその第一の発
明は自由面から先ず小孔径の穿孔を行ない、これに引続
いて破壊せんとする部分を大孔径の拡孔で形成し、この
大孔径の拡孔中に静的破砕剤を予め水と混合させてスラ
リー状として充填するか又は静的破砕剤を宜の手段で密
封することにより破砕剤を小孔径の穿孔から噴出させな
い状態で拡孔中において破壊を起させることを特徴とす
るものであり、第二の発明は自由面から小孔径の多数の
群孔を穿ち、その番孔に大孔径の拡孔を２個所以上設け
、かつ拡孔の前後における小孔径の穿孔部分は密封し、
かつ静的破砕剤を予め水と混合させてスラリー状として
拡孔中に充填するか又は静的破砕剤を水と別個に拡孔中
に充填するかして大孔径の拡孔中で破壊を起させて地中
に２個所以上の空洞を形成することを特徴とするもので
あり、第三の発明は自由面から小孔径の多数の群孔を穿
ち、その番孔に適当な間隔で大孔径の拡孔を形成し、該
拡孔のあるものには静的破砕剤を予め水と混合させてス
ラリー状態として充填するか又は静的破砕剤を水と別個
に充填するかして破砕室を構成し、あるものはそのまま
空孔として残すように構成したことを特徴とするもので
ある。That is, the present invention consists of three inventions, the first of which is to first drill a small hole in the free surface, then to form a large hole in the area to be destroyed, and to During hole expansion, the static crushing agent can be mixed with water and filled in the form of a slurry, or the static crushing agent can be sealed with a suitable means to expand the crushing agent without spewing out from the small hole. The second invention is characterized by causing fracture in the hole, and the second invention is to drill a large number of small-diameter group holes from the free surface, provide two or more large-diameter enlarged holes in the numbered holes, and The small diameter perforation area before and after the hole expansion is sealed.
In addition, the static crushing agent can be mixed with water in advance and filled in the form of a slurry while the hole is being expanded, or the static crushing agent and water can be filled separately into the hole to prevent fracture during the hole expansion of a large hole. The invention is characterized by forming two or more cavities in the ground by raising the holes, and the third invention is to drill a large number of small-diameter group holes from the free surface, and to fill the holes with large holes at appropriate intervals. A crushing chamber is formed by forming a hole with a large diameter, and filling the hole with a static crushing agent in a slurry state by mixing it with water in advance, or filling the static crushing agent separately with water. It is characterized in that it is configured such that some of the holes are left as they are.
第二、三の発明は充填部のみを拡孔とし、密封は小孔部
で行なうという第一の発明の思想を発展させたものであ
って、何れも大孔径の拡孔を利用することにより格段の
破砕力を期待することができ、しかも小孔部で密封を行
なうことにより技術的に容易に行なうことができる。The second and third inventions are developments of the idea of the first invention, in which only the filling part is expanded and the sealing is performed in the small hole. A remarkable crushing force can be expected, and it is technically easy to carry out by sealing the small holes.
そして第二発明にあってはトンネルの掘削Ｇこ役立ち、
第三発明にあっては掘削面積の大きいものに応用して大
いに役立つものである。And in the second invention, it is useful for tunnel excavation,
The third invention is very useful when applied to large excavation areas.
以下図面に示す実施例について説明する。The embodiments shown in the drawings will be described below.
第１図は本発明の基本的原理を示すもので地表（３）か
ら破壊せんとするゾーンに向けて先ず小孔径の孔′（１
）を穿ち、次に大孔径の孔（２）を穿つ、大孔径の孔（
２）には破砕剤と水とを混合したスラリー（５）を充填
し、小孔径の孔（１）には、例えば急結性セメント、す
なわち珪酸ソーダにセメントを混合したものを充填して
密封（４）する。Figure 1 shows the basic principle of the present invention. First, a small hole '(1) is inserted from the ground surface (3) toward the zone to be destroyed.
), then drill a large hole (2), then drill a large hole (2).
2) is filled with a slurry (5) that is a mixture of a crushing agent and water, and the small pores (1) are filled with, for example, quick-setting cement, that is, a mixture of sodium silicate and cement, and sealed. (4) Do it.
かくして反応時間がくればスラリーは膨張して破砕を生
ずる。 その際急結性セメントで密封しであるからスラ
リーは噴出することはなく、破壊効果を十分に奏する。Thus, once the reaction time has elapsed, the slurry expands and fractures. At that time, since the slurry is sealed with quick-setting cement, the slurry does not spout out, and the destruction effect is sufficiently exerted.
しかして小孔径の孔を密封するだけで足りるので技術的
にも経済的にも容易に密封することができ、しかも大孔
径の孔に破砕剤を充填するので格段の破砕力を期待でき
る。Since it is sufficient to seal only the small-diameter pores, the sealing can be easily achieved both technically and economically, and since the large-diameter pores are filled with a crushing agent, a remarkable crushing force can be expected.
すなわち、大孔径の場合周凹の岩盤に熱が逃げる度合が
少なく、熱がこもるので膨張圧力が大きくなると共に反
応時間が早くなり、しかも孔中に発生する蒸気圧が大き
くなるからである。That is, in the case of large pores, the degree of heat escaping to the circumferentially concave rock mass is small, and the heat is trapped, increasing the expansion pressure and speeding up the reaction time, as well as increasing the vapor pressure generated in the pores.
以上のような原理を用いて他山（力の中に仕上げ、ＩＩ
（８）で囲まれた空洞（９）を掘削する場合、地表ＱＯ
）から空洞（９）を形成せんとするゾーンに向けて先ず
小孔径の孔Ｉを適当数穿つ、そして該空洞部にかかる部
分を大孔径の孔ａ２に拡孔し、ここに静的破砕剤と水と
のスヲ、リー（１３）を充填した後小孔径の部分で部分
的に密封αａを施す。Using the principles mentioned above, we can create other mountains (finishing in force, II).
When excavating a cavity (9) surrounded by (8), the ground surface QO
) to the zone where the cavity (9) is to be formed, first drill an appropriate number of small-diameter holes I, then enlarge the part that spans the cavity to a large-diameter hole A2, and apply a static crushing agent here. After filling with water and water (13), sealing αa is applied partially to the small hole diameter portion.
かくして反応時間がくればスラリーは膨張を起して破砕
が生ずる。Thus, once the reaction time has elapsed, the slurry expands and fractures occur.
この作業は第３図に示すように自由面（２１）に近い面
からａ、ｂ、ｃｌｏｌ、の順序で行なえば自由面を持つ
ため効果的な破砕を行なうことができる。 当然ながら
ズリの排出は坑口より行なう。As shown in FIG. 3, if this operation is performed in the order of a, b, and clol starting from the surface closest to the free surface (21), effective crushing can be achieved because the free surface is present. Naturally, the waste will be discharged from the wellhead.
この工法では仕上げ線（８）の内側に破砕ゾーンをとめ
ておき破砕ゾーン境界線０９と仕上げ線（８）との間０
６）は機械仕上げ等を行六つだ方が均一な仕上がりを要
求される場合はより好ましい。In this method, the crushing zone is kept inside the finishing line (8), and the distance between the crushing zone boundary line 09 and the finishing line (8) is 0.
For 6), it is more preferable to perform mechanical finishing etc. six times if a uniform finish is required.
全く同様に一本の小孔径の孔の２個所を拡孔し、２つの
空洞を形成することができる。In exactly the same way, two cavities can be formed by enlarging one small-diameter hole at two locations.
これを第４図に示す。This is shown in FIG.
すなわち、１本の小孔径の孔０８）の２個所を拡孔（１
９） （＋９）したものを上下数段に形成し、前記と同
様に拡孔（１９１にスラリーを充填し、その出入口を密
封したものであって２つの空洞（２０＋（２０１（６）
０１１０．急結性セメント
が形成される。 具体的な工法は第２図と同様である。In other words, two holes of one small diameter hole 08) are enlarged (1
9) (+9) were formed in several stages above and below, and the holes expanded (191) were filled with slurry as described above, and the entrances and exits were sealed, and two cavities (20 + (201 (6)
0110. Rapid-setting cement is formed. The specific construction method is the same as shown in Figure 2.
第５図は幾つかの拡孔部を持つ群孔を地盤（２４Ｊに穿
ったものである。Figure 5 shows a group of holes with several enlarged holes drilled into the ground (24J).
そしてこの拡孔部（２２１のあるものにはスラリー充填
を行ない、又あるものは空孔のまま残して同−剤量に対
しての破砕量を増やそうとするもので立体的にみて千鳥
配置や同一面に充填した拡孔と空孔を並べる方法などが
一般的に有効である。 （２５）はそのスラリーを示し
、（２６）はその密封部を示す。Some of these enlarged holes (221) are filled with slurry, while others are left empty to increase the amount of crushing for the same amount of agent, and from a three-dimensional perspective, they are arranged in a staggered manner. Generally, it is effective to arrange expanded holes and holes filled in the same plane. (25) shows the slurry, and (26) shows the sealed part.
第１図は本発明原理図
第２．３図は異なった方向ふらみたトンネル掘削を示す
説明図
第４図は２個のトンネル掘削を示す説明図第５図は特殊
な工法を示す説明図である。゛（１） 、 、 、 、
、小孔径の孔（２）・・・・、大孔径の孔
（５）、、、、、破砕剤と水とのスラリー特許出願人
株式会社 青水建設
５
第 ４１・η
第２ ｉ、！１
第３図Figure 1 is a diagram showing the principle of the present invention. Figure 2.3 is an explanatory diagram showing tunnel excavation in different directions. Figure 4 is an explanatory diagram showing two tunnel excavations. Figure 5 is an explanatory diagram showing a special construction method. be.゛(1) , , , ,
, Small pore size (2)..., Large pore size (5), Slurry of crushing agent and water Patent applicant
Seisui Construction Co., Ltd. 5 41st・η 2nd i,! 1 Figure 3
Claims (4)
いて破壊せんとする部分を大孔径の拡孔で形成し、この
大孔径の拡孔中に静的破砕剤を予め水と混合させてスラ
リー状として充填するか又は静的破砕剤を水と別個に充
填すると共に小孔径の穿孔を適宜の手段で密封すること
により破砕剤を小孔径の穿孔から噴出させない状態で拡
孔中において破壊を起させることを特徴とする拡孔式静
的破砕工法。(1) First, a hole with a small diameter is drilled from the free direction, and then the part to be destroyed is formed by expanding a hole with a large diameter, and during the expansion of this large hole, a static crushing agent is mixed with water in advance. Either by filling the static crushing agent in the form of a slurry, or by filling the static crushing agent separately with water and sealing the small hole by an appropriate means, the crushing agent can be prevented from spouting out from the small hole during hole expansion. A hole-expanding static crushing method characterized by causing destruction.
数設けて地中に空洞を形成することを特徴とする特許請
求の範囲第１項記載の拡孔式静的破砕工法っ(2) The hole-expanding static crushing method according to claim 1, characterized in that a cavity is formed in the ground by providing a plurality of holes consisting of small-diameter holes and large-diameter expansion holes.
に大孔径の拡孔を２個所以上設け、かつ拡孔の前後にお
ける小孔径の穿孔部分は密封し、かつ静的破砕剤を予め
水と混合させてスラリー状として拡孔中に充填するか又
は静的破砕剤を水と別個に拡孔中に充填するかして、大
孔径の拡孔中で破壊を起させて地中に２個以上の空洞を
形成することを特徴とする拡孔式静的破砕工法。(3) Drill a large number of small-diameter group holes from the free surface, provide two or more large-diameter expansion holes in each hole, and seal the small-diameter holes before and after the hole expansion, and static crushing. Either the agent is premixed with water and filled in the form of a slurry into the hole, or the static crushing agent is filled into the hole separately from water to cause fracture during the hole expansion of a large hole. A hole expansion static crushing method characterized by forming two or more cavities underground.
に適当な間隔で大孔径の拡孔を形成し、該拡孔のあるも
のには静的破砕剤を予め水と混合させてスラリー状とし
て充填するか又は静的破砕剤を水と別個に充填するかし
て破砕室を構成し、あるものはそのまま空孔として残す
ように構成したことを特徴とする拡孔式％式％(4) Drill a large number of small-diameter group holes from the free surface, and form large-diameter enlarged holes in each hole at appropriate intervals, and mix static crushing agent with water in advance in those with enlarged holes. The crushing chamber is constructed by filling the static crushing agent in the form of a slurry, or by filling the static crushing agent separately with water, with some holes left as they are. formula%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21462882A JPS59106693A (en) | 1982-12-09 | 1982-12-09 | Hole enlarging type static crushing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21462882A JPS59106693A (en) | 1982-12-09 | 1982-12-09 | Hole enlarging type static crushing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59106693A true JPS59106693A (en) | 1984-06-20 |
| JPH0320559B2 JPH0320559B2 (en) | 1991-03-19 |
Family
ID=16658881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21462882A Granted JPS59106693A (en) | 1982-12-09 | 1982-12-09 | Hole enlarging type static crushing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59106693A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156101A (en) * | 1976-06-23 | 1977-12-26 | Komatsu Mfg Co Ltd | Method of crushing bedrock |
| JPS57134994U (en) * | 1981-02-18 | 1982-08-23 | ||
| JPS58204294A (en) * | 1982-05-21 | 1983-11-28 | 日本国有鉄道 | Crushing of sea bottom rock foundation |
-
1982
- 1982-12-09 JP JP21462882A patent/JPS59106693A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156101A (en) * | 1976-06-23 | 1977-12-26 | Komatsu Mfg Co Ltd | Method of crushing bedrock |
| JPS57134994U (en) * | 1981-02-18 | 1982-08-23 | ||
| JPS58204294A (en) * | 1982-05-21 | 1983-11-28 | 日本国有鉄道 | Crushing of sea bottom rock foundation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0320559B2 (en) | 1991-03-19 |
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