JPH0626033A - Building method for continuous wall body - Google Patents
Building method for continuous wall bodyInfo
- Publication number
- JPH0626033A JPH0626033A JP4204422A JP20442292A JPH0626033A JP H0626033 A JPH0626033 A JP H0626033A JP 4204422 A JP4204422 A JP 4204422A JP 20442292 A JP20442292 A JP 20442292A JP H0626033 A JPH0626033 A JP H0626033A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- drilling
- depth
- machine
- drilled
- 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
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、連続壁体の造成工法に
関する。さらに詳しくは、削孔機により削孔される立坑
の内部で削孔土砂と硬化剤とを撹拌混合して壁体を造成
する連続壁体の造成工法の に係る改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a continuous wall body. More specifically, the present invention relates to an improvement related to a method for constructing a continuous wall body in which a wall body is formed by stirring and mixing drilling earth and sand and a hardening agent inside a shaft to be drilled by a drilling machine.
【０００２】[0002]
【従来の技術】従来、連続壁体の造成工法としては、図
３に示すものが本出願人によって先に提案されている
（特願昭 号参照）。即ち、まず、図３
（Ａ）に示すように、オーガ等の複数軸１１，１２，１
３からなる削孔機１により立坑３を削孔しながら削孔機
１から立坑３の内部にモルタル等の硬化剤を注入し、立
坑３の内部で削孔土砂と硬化剤とを撹拌混合して壁体４
を造成し、次に、図３（Ｂ），（Ｃ）に示すように、立
坑３の一部が重複するように削孔機１で立坑３を削孔す
ることにより壁体４を連続させていくものである。2. Description of the Related Art Conventionally, as a method for constructing a continuous wall, the one shown in FIG. 3 has been previously proposed by the present applicant (see Japanese Patent Application No. Sho. That is, first, FIG.
As shown in (A), a plurality of shafts 11, 12, 1 such as an auger
While drilling the shaft 3 by the hole drilling machine 1 composed of 3, a hardening agent such as mortar is injected from the hole drilling machine 1 into the shaft 3 and the drilling earth and sand and the hardening agent are stirred and mixed inside the shaft 3. Wall 4
Next, as shown in FIGS. 3 (B) and 3 (C), the wall body 4 is made continuous by boring the vertical shaft 3 with the hole boring machine 1 so that a part of the vertical shaft 3 overlaps. It is something that goes.
【０００３】このような本出願人の先提案に係る連続壁
体の造成工法では、一般的に、図４に示すように削孔機
１の昇降をガイドするリーダＡとリーダＡを移動させた
りする移動体Ｂとからなる装置が使用されており、リー
ダＡの高さＨが立坑３の削孔深度と同等またはそれ以上
必要になっている。従って、立坑３の削孔深度が深くな
るとリーダＡの高さＨも高くなり、削孔機１，リーダＡ
が転倒する等の危険性が生じたり、周囲に威圧感を与え
る等の環境悪化を生じたりすることがあるため、図５に
示すようないわゆる２段工法が採られるようになってき
ている。In the construction method of the continuous wall body according to the prior proposal of the present applicant, generally, as shown in FIG. 4, the leader A for guiding the up-and-down movement of the boring machine 1 and the leader A are moved. A device composed of a moving body B and a movable body B is used, and the height H of the leader A is required to be equal to or more than the drilling depth of the shaft 3. Therefore, as the hole depth of the vertical shaft 3 becomes deeper, the height H of the leader A also becomes higher.
Since there is a risk of falling, etc., and environmental deterioration such as giving an intimidating feeling to the surroundings, so-called two-step construction method as shown in FIG. 5 has been adopted.
【０００４】図５に示す工法は、削孔深度に対応した長
さの削孔機１の各軸１１，１２，１３を長さ方向へ２分
割可能に形成しておき、まず、図５（Ａ）に示すように
削孔機１の各軸１１，１２，１３を半分長に分割して削
孔深度の半分の深度まで立坑３を削孔し、次に、図５
（Ｂ），（Ｃ）に示すように削孔機１の各軸１１，１
２，１３を全長に接続して図５（Ｄ）に示すように立坑
３を削孔深度の全長の深度まで削孔を延長する。そし
て、図５（Ｅ），（Ｆ），（Ｇ），（Ｈ）に示すように
削孔機１を半分づつ引上げて削孔機１の各軸１１，１
２，１３を半分長に分割し、図５（Ｉ）に示すように立
坑３の一部が重複するように削孔機１を移動させ、図５
（Ｊ）に示すように新たに立坑３を削孔していくもので
ある。即ち、リーダＡの高さＨが立坑３の削孔深度の半
分程度ですむことになるのである。In the construction method shown in FIG. 5, each shaft 11, 12, 13 of the boring machine 1 having a length corresponding to the boring depth is formed so that it can be divided into two in the longitudinal direction. As shown in A), each shaft 11, 12, 13 of the drilling machine 1 is divided into half lengths to drill the shaft 3 to a depth half the drilling depth, and then, as shown in FIG.
As shown in (B) and (C), each shaft 11, 1 of the hole drilling machine 1
2 and 13 are connected to the entire length, and as shown in FIG. 5 (D), the shaft 3 is drilled to the depth of the entire drilling depth. Then, as shown in FIGS. 5 (E), (F), (G), and (H), the hole drilling machine 1 is pulled up in half and each shaft 11, 1 of the hole drilling machine 1 is pulled up.
2 and 13 are divided into half lengths, and the boring machine 1 is moved so that a part of the shaft 3 overlaps as shown in FIG.
As shown in (J), the vertical shaft 3 is newly drilled. That is, the height H of the leader A is about half of the depth of drilling of the vertical shaft 3.
【０００５】このような従来の連続壁体の造成工法で
は、施工に要求される地上高さが低くなるものの、削孔
機１の昇降や各軸１１，１２，１３の分割，接続を煩雑
に行わなければならないため、施工期間が長くなるとい
う問題点を有している。In such a conventional construction method for a continuous wall body, although the height above ground required for construction is low, raising and lowering of the boring machine 1 and division and connection of each shaft 11, 12, 13 are complicated. Since this has to be done, there is a problem that the construction period becomes long.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、前述の問題
点を考慮してなされたもので、施工に要求される地上高
さが低く施工期間の短い連続壁体の造成工法を提供する
ことを課題とする。SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and provides a method for constructing a continuous wall body which requires a low height above ground and a short construction period. Is an issue.
【０００７】[0007]
【課題を解決するための手段】前述の課題を解決するた
め、本発明に係る連続壁体の造成工法は、次のような手
段を採用する。In order to solve the above problems, the method for constructing a continuous wall according to the present invention employs the following means.
【０００８】即ち、請求項１では、複数軸からなる削孔
機により立坑を削孔しながら削孔機から立坑の内部に硬
化剤を注入し、立坑の内部で削孔土砂と硬化剤とを撹拌
混合して壁体を造成し、次に立坑の一部が重複するよう
に削孔機で立坑を削孔することにより壁体を連続させて
いく連続壁体の造成工法において、削孔機を複数軸の並
列方向へ２組並設して設け、削孔深度に対応した長さの
削孔機の少なくとも１組の各軸を長さ方向へ２分割可能
に形成しておき、両組の削孔機の各軸を半分長に分割し
て削孔深度の半分の深度まで立坑を削孔した後、造成進
行方向の後側の組の削孔機を立坑の内部に残して同前側
の組の削孔機を引上げ、同後側の組の削孔機の各軸を全
長に接続してから、両組の削孔機を降下させて同前側の
組の削孔機でその直下の先に削孔した立坑を再度削孔し
同後側の組の削孔機でその直下の先に削孔した立坑を削
孔深度の全長の深度まで削孔を延長し、而後両組の削孔
機を引上げ同後側の組の削孔機の下半分を立坑中に埋没
させたまま造成進行方向へ移動させて同後側の組の削孔
機を同前側の組の削孔機の先の位置に符合させ、両組の
削孔機を降下させて同前側の組の削孔機でその直下に新
たに削孔深度の半分の深度まで立坑を削孔し同後側の組
の削孔機でその直下の先に削孔した立坑を削孔深度の全
長の深度まで削孔を延長することにより、壁体を連続さ
せていくことを特徴とする。That is, in claim 1, a hardening agent is injected into the shaft from the drilling machine while drilling the shaft with a drilling machine composed of a plurality of shafts, and the drilling earth and sand and the hardening agent are injected inside the shaft. In a construction method of a continuous wall body in which the wall body is made continuous by agitating and mixing to form a wall body, and then making a hole in the shaft hole by a hole drilling machine so that a part of the shaft overlaps Are provided side by side in parallel in a plurality of axes, and at least one set of each axis of the boring machine having a length corresponding to the boring depth is formed so as to be bisectable in the longitudinal direction, and both sets are formed. After splitting each axis of the drilling machine into half lengths and drilling the shaft to half the depth of the drilling hole, leave the group of drilling machines on the rear side in the construction progressing direction inside the shaft. Pull up the drilling machine of the set, and connect each shaft of the drilling machine of the rear side to the entire length, then lower the drilling machine of both sets and use the drilling machine of the front side The vertical shaft that was drilled at the lower end is re-drilled, and the vertical shaft that was drilled immediately before the vertical shaft is drilled to the full depth of the drilling depth by the group of drilling machines on the rear side. The hole drilling machine of the same group is pulled up and the lower half of the hole drilling machine of the rear side set is moved in the direction of construction while being buried in the shaft, and the hole drilling machine of the rear side set is drilled for the front side set. Match the position to the tip of the drill, lower both sets of drilling machines, and drill a new shaft directly underneath the drilling machine of the same group to the depth of half of the drilling depth, The feature is that the shaft body is made continuous by extending the vertical hole directly underneath with a pair of hole drilling machines to the depth of the entire length of the hole drilling depth.
【０００９】また、請求項２では、請求項１の連続壁体
の造成工法において、壁体の造成終了端で同前側の削孔
機の各軸を全長に接続し、同前側の削孔機でその直下の
先に削孔した立坑を削孔深度の全長の深度まで削孔を延
長することにより、壁体の造成深度を均等にすることを
特徴とする。According to a second aspect of the present invention, in the method for forming a continuous wall body according to the first aspect, each shaft of the boring machine on the front side is connected to the entire length at the end of building the wall body, and the boring machine on the front side is connected. The feature is that the depth of the wall is made uniform by extending the vertical hole directly below the vertical shaft to the depth of the full length of the vertical hole.
【００１０】[0010]
【作用】前述の手段によると、請求項１では、施工に要
求される地上高さが低くなるという従来例の基本原理を
利用しているものの、削孔機を２組並設することによ
り、造成進行方向の後側の組の削孔機が次に重複して削
孔しようとする立坑が同前側の削孔機によって既に連通
して削孔されている状態を立坑の削孔と同時に得ること
ができることから、同後側の組の削孔機の一部を立坑の
内部で造成進行方向へ移動させ、削孔機の昇降や各軸の
分割，接続の回数を削減することができるため、施工に
要求される地上高さが低く施工期間の短い連続壁体の造
成工法を提供するという課題が解決される。According to the above-mentioned means, in claim 1, although the basic principle of the conventional example that the ground height required for construction becomes low is used, by arranging two sets of drilling machines in parallel, At the same time as the vertical hole drilling, a state in which the vertical hole drilling machines in the rear side of the construction progressing direction are overlapped and the vertical shaft is already communicating with the vertical hole drilling machine at the same time Therefore, it is possible to reduce the number of times the hole drilling machine is moved up and down, each axis is split, and connected by moving a part of the hole drilling machine on the rear side in the vertical shaft in the construction progress direction. The problem of providing a method for constructing a continuous wall body that requires a low ground clearance and a short construction period is solved.
【００１１】また、請求項２では、請求項１の作用にお
いて、壁体の造成終了端となる造成進行方向の前側の組
の削孔機の各軸を全長に接続することにより、壁体の造
成終了端まで削孔深度の全長の深度まで削孔されること
になり、壁体の造成深度を均等にして壁体の連続性を高
め、前述の課題の解決をより確実にする。According to a second aspect of the present invention, in the operation of the first aspect, the shafts of the boring machine of the front set in the construction advancing direction, which is the end of formation of the wall body, are connected to the entire length of the wall body by connecting the shafts to each other. The hole is drilled to the end of formation up to the full depth of the hole, and the depth of formation of the wall body is made uniform to improve the continuity of the wall body, thereby more reliably solving the above-mentioned problems.
【００１２】[0012]
【実施例】以下、本発明に係る連続壁体の造成工法の実
施例を図１，図２に基いて説明する。EXAMPLE An example of a method for constructing a continuous wall body according to the present invention will be described below with reference to FIGS.
【００１３】この実施例では、図５に示した従来例と基
本的には共通の原理（いわゆる２段工法）を採用したも
のを示してある。In this embodiment, the principle basically common to the conventional example shown in FIG. 5 (so-called two-step construction method) is adopted.
【００１４】この実施例に使用される削孔機１，２は、
従来の削孔機１に加えて複数軸の並列方向へもう１組並
設し、２組並設構成としてある。そして、両削孔機１，
２の長さを削孔深度（例えば、３０ｍ）に対応させ、両
削孔機１，２の各軸１１，１２，１３，２１，２２，２
３を長さ方向へ２分割可能に形成してある。なお、リー
ダＡは、前記３０ｍの半分の１５ｍ程度に設定されるこ
とになる。The drilling machines 1 and 2 used in this embodiment are
In addition to the conventional drilling machine 1, another set is arranged in parallel in the parallel direction of a plurality of shafts to form two sets. And both boring machine 1,
The length of 2 corresponds to the drilling depth (for example, 30 m), and the shafts 11, 12, 13, 21, 22, 22 of both drilling machines 1 and 2 are drilled.
3 is formed so that it can be divided into two in the length direction. The reader A is set to about 15 m, which is half of the 30 m.
【００１５】このような削孔機１，２を使用しての実施
では、まず、図１（Ａ）に示すように、両組の削孔機
１，２の各軸１１，１２，１３，２１，２２，２３を半
分長（１５ｍ）に分割して、削孔深度の半分の深度（１
５ｍ）まで立坑３を削孔する。このような削孔に際して
は前述の従来例のように削孔機１，２から硬化剤を注入
して削孔土砂と撹拌混合することになり、以下の削孔に
おいても同様である。In the implementation using such hole punchers 1 and 2, first, as shown in FIG. 1 (A), the shafts 11, 12, 13, 21, 22,23 is divided into half length (15m) and the depth (1
Drill shaft 3 up to 5 m). At the time of such drilling, a hardening agent is injected from the drilling machines 1 and 2 and agitated and mixed with the drilling earth and sand as in the above-mentioned conventional example, and the same applies to the following drilling.
【００１６】次に、図１（Ｂ）に示すように、造成進行
方向（図１の右側）の後側の組の削孔機１を立坑３の内
部に残して、同前側の組の削孔機２をそのまま直上に引
上げる。そして、図１（Ｃ）に示すように、同後側の組
の削孔機１の各軸１１，１２，１３を全長（３０ｍ）に
接続してから、両組の削孔機１，２を造成進行方向へ移
動させることなくそのまま降下させる。Next, as shown in FIG. 1 (B), leaving the rear set of the boring machine 1 in the building advancing direction (on the right side of FIG. 1) inside the vertical shaft 3, the front set of the boring machine is cut. Pull up the punch 2 as it is. Then, as shown in FIG. 1 (C), after connecting the respective shafts 11, 12, 13 of the drilling machine 1 of the rear side set to the entire length (30 m), the drilling machines 1, 2 of both sets are connected. To move down without moving in the direction of creation.
【００１７】図１（Ｄ）に示すように両組の削孔機１，
２が降下すると、同前側の組の削孔機２は、その軸２
１，２２，２３は１５ｍであるため、その直下の先に削
孔した立坑３を再度削孔することになる。また、同後側
の組の削孔機１は、その軸１１，１２，１３が３０ｍで
あるため、その直下の先に削孔した立坑３を削孔深度の
全長（３０ｍ）の深度（３０ｍ）まで削孔を延長するこ
とになる。As shown in FIG. 1 (D), both sets of drilling machines 1,
When 2 descends, the drilling machine 2 on the front side of
Since 1, 22 and 23 are 15 m in length, the vertical shaft 3 drilled immediately below the vertical shaft 3 is drilled again. Further, since the shafts 11, 12, and 13 of the pair of drilling machines 1 on the rear side are 30 m, the vertical shaft 3 drilled immediately below the shaft 11 is drilled at the depth (30 m) of the entire drilling depth (30 m). ) Will be extended.
【００１８】而後、図１（Ｅ）に示すように、両組の削
孔機１，２を引上げる。この引上げによると、同前側の
組の削孔機２の軸２１，２２，２３が全部（１５ｍ）地
上に引上げられ、同後側の組の削孔機１の軸１１，１
２，１３が半分（３０ｍの半分の１５ｍ）だけ地上に引
上げられ他の半分（１５ｍ）が立坑３の内部に残ること
になる。After that, as shown in FIG. 1 (E), both sets of drilling machines 1 and 2 are pulled up. According to this pulling up, the shafts 21, 22, 23 of the drilling machine 2 of the front side group are all lifted (15 m) to the ground, and the shafts 11, 1 of the drilling machine 1 of the rear side group are set up.
Half of 2, 13 (15m, which is half of 30m) is pulled up to the ground, and the other half (15m) remains inside the shaft 3.
【００１９】さらに、この引上げの状態から、同後側の
組の削孔機１の軸１１，１２，１３の下半分を立坑３中
に埋没させたままで、両削孔機１，２を造成進行方向へ
移動させ、同後側の組の削孔機１を同前側の組の削孔機
２の先の位置に符合させる。このとき、同後側の組の削
孔機１の軸１１，１２，１３による削孔土砂，硬化剤の
撹拌を継続しておくと、移動抵抗が低くなる。Further, from this raised state, both boring machines 1 and 2 are constructed with the lower half of the shafts 11, 12, 13 of the boring machine 1 of the rear side set buried in the shaft 3. The drilling machine 1 of the rear set is moved to the forward direction, and the drilling machine 1 of the rear set is aligned with the tip of the drilling machine 2 of the front set. At this time, if the stirring of the drilling earth and sand and the hardening agent by the shafts 11, 12, and 13 of the drilling machine 1 of the rear side is continued, the movement resistance becomes low.
【００２０】そして、このような移動が終了したなら
ば、その位置で両組の削孔機１，２を降下させることに
なる。When such movement is completed, both sets of drilling machines 1 and 2 are lowered at that position.
【００２１】両組の削孔機１，２が降下すると、同前側
の組の削孔機２は、その軸２１，２２，２３は１５ｍで
あるため、その直下に新たに削孔深度（３０ｍ）の半分
の深度（１５ｍ）まで立坑３を削孔することになる。ま
た、同後側の組の削孔機１は、その軸１１，１２，１３
が３０ｍであるため、その直下の先に削孔した立坑３を
削孔深度の全長の深度（３０ｍ）まで削孔を延長するこ
とになる。When both sets of drilling machines 1 and 2 are lowered, the shafts 21, 22, and 23 of the drilling machine 2 of the same set are 15 m, so a new drilling depth (30 m The vertical shaft 3 will be drilled to a depth (15 m) that is half of the above. In addition, the drilling machine 1 of the rear side set has its shafts 11, 12, 13
Since it is 30 m, the vertical shaft 3 drilled immediately below the vertical shaft 3 is extended to the depth (30 m) of the entire drilling depth.
【００２２】以上のような削孔の図１（Ｄ）〜（Ｇ）の
繰返しによって、立坑３の内部に一体的に壁体４が連続
して造成されていくことになる。By repeating the above-described drilling of FIGS. 1D to 1G, the wall body 4 is continuously formed integrally inside the vertical shaft 3.
【００２３】なお、壁体４の造成終了端において壁体４
の造成深度を揃えるには、図１（Ｅ）に対応する図３
（Ａ）の状態から、同前側の組の削孔機２の各軸２１，
２２，２３を全長（３０ｍ）に接続して、図１（Ｆ），
（Ｇ）に対応する図３（Ｂ），（Ｃ）のように移動降下
を行えばよい。なお、図面では、同後側の組の削孔機１
の各軸１１，１２，１３を全長（３０ｍ）の半分長（１
５ｍ）に分割してあるが、必ずしも分割する必要はなく
既に削孔されている立坑３を再度削孔するようにしても
差支えない。At the end of construction of the wall body 4, the wall body 4 is
In order to make the formation depths of the same,
From the state of (A), each shaft 21 of the drilling machine 2 of the pair on the front side,
22 and 23 are connected to the entire length (30 m), and as shown in FIG.
The movement and descent may be performed as shown in FIGS. 3B and 3C corresponding to FIG. It should be noted that in the drawings, the pair of drilling machines 1 on the rear side
Each axis 11, 12, 13 of half of the total length (30 m) (1
Although it is divided into 5 m), it is not always necessary to divide the vertical shaft 3 and the vertical shaft 3 already drilled may be drilled again.
【００２４】以上、図示した実施例の外に、図３に示す
ような壁体４の造成深度の均等化を行わない場合には、
同前側の組の削孔機２を分割可能にしないものとする実
施例も可能である。As described above, in addition to the embodiment shown in the drawings, when the building depth of the wall body 4 as shown in FIG. 3 is not equalized,
An embodiment is also possible in which the drilling machine 2 of the same set is not made divisible.
【００２５】[0025]
【発明の効果】以上のように本発明に係る連続壁体の造
成工法は、請求項１では、施工に要求される地上高さが
低くなるという従来例の基本原理をの長所を利用し、削
孔機を２組並設することにより、次に重複して削孔しよ
うとする立坑が既に連通して削孔されている状態を立坑
の削孔と同時に得ることができることから、削孔機の一
部を立坑の内部で造成進行方向へ移動させ、削孔機の昇
降や各軸の分割，接続の回数を削減することができるた
め、施工に要求される地上高さが低く施工期間が短い効
果がある。また、この効果により、施工コストが軽減さ
れ、装置の転倒等の危険性や周囲への威圧感付与等の環
境悪化が防止される効果が生ずる。As described above, the method for constructing a continuous wall body according to the present invention utilizes the advantage of the basic principle of the conventional example that the height above ground required for construction is low in claim 1. By arranging two sets of drilling machines in parallel, it is possible to obtain a state in which the shafts that are going to be drilled next in duplicate are already communicating and drilled at the same time as the drilling of the shafts. Part of the shaft can be moved in the shaft in the direction of construction, and the number of times the boring machine is moved up and down, each axis is divided, and the number of connections can be reduced. Has a short effect. In addition, due to this effect, the construction cost is reduced, and there is an effect that the danger of the device falling over and the like and the environmental deterioration such as giving a sense of intimidation to the surroundings are prevented.
【００２６】さらに、請求項２では、請求項１の効果に
加えて、造成される壁体の造成深度を均等化することが
できるため、造成される壁体の連続性が良好となり止水
等の機能が向上する効果がある。Further, in addition to the effect of the first aspect, in the second aspect, it is possible to equalize the formation depth of the formed wall body, so that the continuity of the formed wall body becomes good and water stoppage etc. Has the effect of improving the function of.
【図１】本発明に係る連続壁体の造成工法の実施例を示
す施工の側面断面図であり、（Ａ）〜（Ｇ）の順に工程
順を示してある。FIG. 1 is a side sectional view of construction showing an embodiment of a method for constructing a continuous wall body according to the present invention, in which the order of steps is shown in the order of (A) to (G).
【図２】図１の工程に続くの最終段階を示す施工の側面
断面図であり、（Ａ）〜（Ｃ）の順に工程順を示してあ
る。FIG. 2 is a side cross-sectional view of construction showing a final stage subsequent to the step of FIG. 1, showing the order of steps in the order of (A) to (C).
【図３】従来例を示す施工の平面図であり、（Ａ）〜
（Ｃ）の順に工程順を示してある。FIG. 3 is a plan view of a construction showing a conventional example, (A) to
The order of steps is shown in the order of (C).
【図４】図３の施工に使用される装置例を示す側面図で
ある。FIG. 4 is a side view showing an example of a device used for the construction of FIG.
【図５】従来例を示す施工の側面断面図であり、（Ａ）
〜（Ｊ）の順に工程順を示してある。FIG. 5 is a side sectional view of construction showing a conventional example, (A)
The process sequence is shown in the order of (J) to (J).
１，２ 削孔機 １１，１２，１
３，２１，２２，２３軸 ３ 立坑 ４ 壁体1, 2 drilling machine 11, 12, 1
3,21,22,23 Axis 3 Vertical shaft 4 Wall body
Claims (2)
しながら削孔機から立坑の内部に硬化剤を注入し、立坑
の内部で削孔土砂と硬化剤とを撹拌混合して壁体を造成
し、次に立坑の一部が重複するように削孔機で立坑を削
孔することにより壁体を連続させていく連続壁体の造成
工法において、削孔機を複数軸の並列方向へ２組並設し
て設け、削孔深度に対応した長さの削孔機の少なくとも
１組の各軸を長さ方向へ２分割可能に形成しておき、両
組の削孔機の各軸を半分長に分割して削孔深度の半分の
深度まで立坑を削孔した後、造成進行方向の後側の組の
削孔機を立坑の内部に残して同前側の組の削孔機を引上
げ、同後側の組の削孔機の各軸を全長に接続してから、
両組の削孔機を降下させて同前側の組の削孔機でその直
下の先に削孔した立坑を再度削孔し同後側の組の削孔機
でその直下の先に削孔した立坑を削孔深度の全長の深度
まで削孔を延長し、而後両組の削孔機を引上げ同後側の
組の削孔機の下半分を立坑中に埋没させたまま造成進行
方向へ移動させて同後側の組の削孔機を同前側の組の削
孔機の先の位置に符合させ、両組の削孔機を降下させて
同前側の組の削孔機でその直下に新たに削孔深度の半分
の深度まで立坑を削孔し同後側の組の削孔機でその直下
の先に削孔した立坑を削孔深度の全長の深度まで削孔を
延長することにより、壁体を連続させていくことを特徴
とする連続壁体の造成工法。1. A hardener is injected from the drilling machine into the shaft while the shaft is drilled by a drilling machine composed of a plurality of shafts, and the drilling earth and sand and the hardening agent are stirred and mixed inside the shaft to form a wall. In the construction method of a continuous wall body in which a body is created and then the wall body is made continuous by drilling the shaft with a hole drilling machine so that part of the shaft overlaps, Direction, two sets are installed side by side, and at least one set of each shaft of the drilling machine having a length corresponding to the drilling depth is formed so as to be divided into two in the length direction, and After splitting each axis into half lengths and drilling the shaft to a depth half the drilling depth, leaving the drilling machine for the rear set in the construction progressing direction inside the shaft, drilling the front set. After pulling up the machine and connecting each shaft of the drilling machine of the rear side to the full length,
Both sets of drilling machines are lowered, the vertical shaft drilled directly below the vertical shaft by the drilling machine of the same group is drilled again, and the vertical shaft is drilled immediately below by the drilling machine of the same group. The vertical shaft is drilled to the full depth of the vertical hole, and then both groups of drilling machines are pulled up, and the lower half of the drilling machine of the same group is buried in the vertical shaft in the direction of construction. Move it so that the drilling machine on the rear side matches the position ahead of the drilling machine on the front side, lower both drilling machines, and directly under the drilling machine on the front side. In addition, the vertical shaft is newly drilled to a depth half the depth of the vertical hole, and the vertical shaft drilled immediately below the vertical shaft is drilled by the group of drilling machines on the rear side to the full depth of the vertical hole. A continuous wall body construction method characterized in that the wall body is made continuous by
て、壁体の造成終了端で同前側の削孔機の各軸を全長に
接続し、同前側の削孔機でその直下の先に削孔した立坑
を削孔深度の全長の深度まで削孔を延長することによ
り、壁体の造成深度を均等にすることを特徴とする連続
壁体の造成方法。2. The method for constructing a continuous wall body according to claim 1, wherein each shaft of the boring machine on the front side is connected to the entire length at a finishing end of the wall body, and a tip immediately below the boring machine on the front side is connected. A method for constructing a continuous wall body, characterized in that the depth of construction of the wall body is made uniform by extending the depth of the vertical shaft that has been drilled to the depth of the entire length of the drilling depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4204422A JP2553991B2 (en) | 1992-07-08 | 1992-07-08 | Construction method of continuous wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4204422A JP2553991B2 (en) | 1992-07-08 | 1992-07-08 | Construction method of continuous wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0626033A true JPH0626033A (en) | 1994-02-01 |
| JP2553991B2 JP2553991B2 (en) | 1996-11-13 |
Family
ID=16490281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4204422A Expired - Fee Related JP2553991B2 (en) | 1992-07-08 | 1992-07-08 | Construction method of continuous wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2553991B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101429A (en) * | 2006-10-20 | 2008-05-01 | Land Creative:Kk | Diaphragm wall construction method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751330A (en) * | 1980-09-10 | 1982-03-26 | Taisei Corp | Construction of pillar-aligned wall |
-
1992
- 1992-07-08 JP JP4204422A patent/JP2553991B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751330A (en) * | 1980-09-10 | 1982-03-26 | Taisei Corp | Construction of pillar-aligned wall |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101429A (en) * | 2006-10-20 | 2008-05-01 | Land Creative:Kk | Diaphragm wall construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2553991B2 (en) | 1996-11-13 |
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