JP2000045313A - Ground water permeation method making use of soil cement column strip earth retaining wall - Google Patents
Ground water permeation method making use of soil cement column strip earth retaining wallInfo
- Publication number
- JP2000045313A JP2000045313A JP10226531A JP22653198A JP2000045313A JP 2000045313 A JP2000045313 A JP 2000045313A JP 10226531 A JP10226531 A JP 10226531A JP 22653198 A JP22653198 A JP 22653198A JP 2000045313 A JP2000045313 A JP 2000045313A
- Authority
- JP
- Japan
- Prior art keywords
- retaining wall
- soil cement
- soil
- steel pipe
- permeable layer
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地下構造物の建設にあ
たり、止水壁として利用されるＨ形鋼を用いた土留壁に
おいて、その施工時に土留壁によって遮断された地下水
流を施工完了後通水させるようにした、ソイルセメント
柱列土留壁を用いた地下水通水化工法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth retaining wall using H-shaped steel which is used as a water blocking wall in the construction of an underground structure. The present invention relates to a method of passing groundwater using a soil cement columnar retaining wall that allows water to pass therethrough.
【０００２】[0002]
【従来の技術】地下構造物の建設等においては、その建
設区域を囲んで土留壁を造成し、地下部分の地盤掘削及
び建造物の建設を行うようにしているが、それらの土留
壁は工事終了後は埋め殺しにされる。土留壁は止水性が
重視されることから、ソイルセメント柱列壁、鉄筋コン
クリートによる連続地中壁や鋼管柱列土留壁が用いられ
るが、これらが造成されることによって、地下水脈が遮
断されることになり、地下水位に大きな変動をもたら
し、周辺環境に悪影響を与えることが多くなる。特に近
年は工事が大規模化するにつれ、これが社会的な問題と
なってきている。2. Description of the Related Art In the construction of underground structures, etc., earth retaining walls are formed around the construction area, and ground excavation of underground portions and construction of buildings are performed. It is buried after the end. Since the water retaining property is important for soil retaining walls, soil cement column walls, continuous underground walls made of reinforced concrete and steel pipe column retaining walls are used, but the formation of these will block groundwater veins. , Causing large fluctuations in groundwater levels and adversely affecting the surrounding environment. In particular, in recent years, as construction has become larger, this has become a social problem.
【０００３】この問題を解決するため、Ｈ形鋼を芯材
（耐力材）として用いたソイルセメント柱列土留壁にお
いて、その一部であるＨ形鋼間のソイルセメントのみの
壁を、例えば地上よりオーガスクリューなどにより掘削
してその部分に通水孔を設けるようにした地下水通水化
工法が提案されている。In order to solve this problem, in a soil-cement column retaining wall using H-shaped steel as a core material (bearing material), a wall made of only soil cement between the H-shaped steels, which is a part thereof, is provided, for example, on the ground. There has been proposed a groundwater permeation method in which a hole is provided in a portion excavated with an auger screw or the like.
【０００４】[0004]
【発明が解決しようとする課題】ところが、この方法で
は、地下からのオーガスクリューによるソイルセメント
の掘削、除去が精度よく行えず、所定の通水開口部の形
状が確保できなかったり、オーガスクリューが隣接する
Ｈ形鋼に接触したりして掘削が不可能になる等して、地
下通水化の目的が達成されない場合が生ずるという問題
がある。However, in this method, excavation and removal of soil cement by an auger screw from underground cannot be performed with high accuracy, and a predetermined water passage opening shape cannot be secured, or the auger screw cannot be used. There is a problem that the purpose of underground water passage may not be achieved due to the fact that excavation becomes impossible due to contact with an adjacent H-shaped steel or the like.
【０００５】本発明は、上記の問題を解決するためにな
されたもので、施工性がよく耐力及び遮水性に優れる
等、利点の多いソイルセメント柱列土留壁を利用し、そ
の遮水壁としての利用後、地上よりオーガスクリューな
どにより土留壁を精度よく掘削、除去することにより、
通水孔を確実、容易に形成することのできる、経済性、
施行性の優れた、地下水通水化工法を提供しようとする
ものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and utilizes a soil cement columnar soil retaining wall, which has many advantages such as good workability and excellent strength and water blocking properties, and is used as the water blocking wall. After the use of, by excavating and removing the earth retaining wall accurately from the ground with an auger screw, etc.,
Economicalness that water holes can be reliably and easily formed,
The aim is to provide a groundwater penetration method with excellent enforceability.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
めの本発明の構成について、実施例に対応する図面を参
照して説明すると、請求項１の工法は、Ｈ形鋼３を芯材
としたソイルセメント柱列土留壁Ａを、建設地盤Ｂを挟
み、透水層Ｄを越えて不透水層Ｅまで根入れして造成す
る工法において、該土留壁Ａの一部に、鋼管４を、その
下端が、上記透水層Ｄに達しない深さに建て込み、その
鋼管４を通して、その下部にあるソイルセメント２部分
を掘削し、該土留壁Ａに透水層Ｄと連通する通水孔５を
開設することを特徴とするものである。The construction of the present invention for attaining the above object will be described with reference to the drawings corresponding to the embodiments. In the construction method in which the soil cement columnar soil retaining wall A is sandwiched between the construction ground B and the water impervious layer E over the water permeable layer D, a steel pipe 4 is partially inserted into the soil retaining wall A. The lower end is erected at a depth that does not reach the permeable layer D. The soil cement 2 at the lower portion is excavated through the steel pipe 4 to form a water hole 5 communicating with the permeable layer D in the retaining wall A. It is characterized by being established.
【０００７】また、請求項２の工法は、Ｈ形鋼３を芯材
としたソイルセメント柱列土留壁Ａを、建設地盤Ｂを挟
み、上下複数にわたる透水層Ｄ1 ，Ｄ2 を越えて不透水
層Ｅまで根入れして造成する工法において、該土留壁Ａ
の一部に、鋼管４を、その下端が上段にある透水層Ｄ1
に達しない深さに建て込み、その鋼管４を通して、その
下部にあるソイルセメント２部分を掘削し、該土留壁Ａ
に透水層Ｄ1 ，Ｄ2 と連通する開口部８を開設し、その
開口部８内を各透水層Ｄ1 ，Ｄ2 に各別に連通する通水
孔５ａ，５ｂに区劃形成することを特徴とするものであ
る。[0007] In the construction method of claim 2, the soil cement column-column retaining wall A having the H-section steel 3 as a core material is improper across the permeable layers D 1 , D 2 extending vertically above and below the construction ground B. In the construction method in which the soil is embedded into the permeable layer E, the retaining wall A
Is partially connected to a permeable layer D 1 whose lower end is in the upper stage.
And excavate the soil cement 2 part at the lower part through the steel pipe 4 and the soil retaining wall A
The opening 8 communicating with the water permeable layers D 1 , D 2 is opened at the same time, and the inside of the opening 8 is divided into the water holes 5 a, 5 b communicating with the water permeable layers D 1 , D 2 respectively. It is a feature.
【０００８】また、請求項３の工法は、請求項１または
２の工法において、建設地盤Ｂを挟んで造成されたソイ
ルセメント柱列土留壁Ａの対向する通水孔５，５，５
ａ，５ａ，５ｂ，５ｂを、砕石等を敷き詰めた通水層６
または連通管７で接続することを特徴とするものであ
る。According to a third aspect of the present invention, in the method of the first or second aspect, the opposed water passage holes 5, 5, 5 of the soil cement column row retaining wall A formed with the construction ground B interposed therebetween.
a, 5a, 5b, 5b, a permeable layer 6 with crushed stones, etc.
Alternatively, the connection is made by a communication pipe 7.
【０００９】また、請求項４の工法は、請求項１または
２または３の工法において、ソイルセメント柱列土留壁
Ａの一部に建て込む鋼管４の外周管軸方向にフイン等の
突起条物15を取り付けたことを特徴とするものである。The method according to claim 4 is the method according to claim 1 or 2 or 3, wherein a projecting strip such as a fin is formed in the axial direction of the outer peripheral pipe of the steel pipe 4 to be built into a part of the soil cement columnar retaining wall A. 15 is attached.
【００１０】また、請求項５の工法は、請求項１または
２または３の工法において、ソイルセメント柱列土留壁
Ａの一部に建て込む鋼管４の外周管軸方向に継手部材16
を取り付けるとともに、該土留壁ＡのＨ形鋼３に上記継
手部材16との嵌合部材17を取り付け、鋼管４とＨ形鋼３
とを連結することを特徴とするものである。The method according to claim 5 is the method according to claim 1 or 2 or 3 in which the joint member 16 extends in the axial direction of the outer peripheral pipe of the steel pipe 4 to be built in a part of the soil cement columnar retaining wall A.
At the same time, the fitting member 17 with the joint member 16 is attached to the H-section steel 3 of the retaining wall A, and the steel pipe 4 and the H-section steel 3 are attached.
Are connected.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。図１〜図８は本発明の第１
の工法の実施態様を示し、図９〜図15は同第２の工法の
実施態様を示したものである。Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 show a first embodiment of the present invention.
9 to 15 show an embodiment of the second method.
【００１２】地下構造物等の建設にあたっては、図１〜
図３に示すように、その建設地盤Ｂを挟んだ両側の地盤
にソイルセメント柱列土留壁Ａ（以下土留壁という）を
造成する。この土留壁Ａの造成は、従来公知のように、
単軸或は多軸のオーガスクリューにより形成した柱列状
の掘削孔１にソイルセメント２を充填し、その中に芯材
（耐力材）であるＨ形鋼３を所要の間隔をおいて建て込
んで行われる。When constructing underground structures, etc.
As shown in FIG. 3, soil cement columnar retaining walls A (hereinafter referred to as retaining walls) are formed on the ground on both sides of the construction ground B. The construction of the retaining wall A is, as conventionally known,
A column-shaped excavation hole 1 formed by a single-axis or multi-axis auger screw is filled with soil cement 2, and an H-section steel 3 as a core material (bearing material) is built therein at a required interval. It is carried out inclusively.
【００１３】この方法は、通称ＳＭＷ工法として知られ
ており、土留壁Ａは通常、透水層Ｄを越えて不透水層Ｅ
まで根入れされる。本発明は、このような土留壁Ａの造
成において実施される。This method is commonly known as the SMW construction method, and the retaining wall A usually extends beyond the permeable layer D to the impermeable layer E.
It is rooted until. The present invention is implemented in the construction of such a retaining wall A.
【００１４】まず、本発明の第１の工法の実施態様につ
いて説明する。この工法では、上記土留壁Ａの造成にあ
たって、図１〜図３に示すように、Ｈ形鋼３を芯材とし
た土留壁Ａの一部すなわち、Ｈ形鋼３，３の間にあるソ
イルセメント２の部分に鋼管４を建て込む。この鋼管４
はＨ形鋼３より短尺のものを使用し、その下端位置が保
全対象となる透水層Ｄの上端以浅、できるだけ透水層Ｅ
の上端近くとなるようにする。この鋼管４の建て込み
は、土留壁Ａ適宜な個所において建て込むが、Ｈ形鋼
３，３の各間毎に建て込むようにもできる。First, an embodiment of the first method of the present invention will be described. In this construction method, when the retaining wall A is formed, as shown in FIGS. 1 to 3, a part of the retaining wall A having the H-shaped steel 3 as a core material, that is, a soil existing between the H-shaped steels 3 and 3. The steel pipe 4 is erected in the portion of the cement 2. This steel pipe 4
Is shorter than the H-section steel 3, and its lower end is shallower than the upper end of the permeable layer D to be preserved,
So that it is near the top of The steel pipe 4 is erected at an appropriate location on the retaining wall A, but may be erected between the H-section steels 3.
【００１５】上記のような土留壁Ａの造成後は、図４に
示すように、建設地盤Ｂを所要の深さ位置ａまで掘削、
排土した後、或はそこに地下構造物Ｃを構築した後、沈
設した鋼管４の下方のソイルセメント２の部分に、地上
よりの作業により透水層Ｄに連通する通水孔５（図４、
図５参照）を開設する。After the construction of the retaining wall A as described above, as shown in FIG. 4, the construction ground B is excavated to a required depth position a.
After discharging the earth or constructing an underground structure C there, a water hole 5 (FIG. 4) communicating with the permeable layer D by work from the ground is formed in the portion of the soil cement 2 below the laid steel pipe 4. ,
(See FIG. 5).
【００１６】通水孔５を開設する方法としては各種の方
法が考えられる。通水孔５の開設は地上よりの作業によ
って行うことが大切である。図８は通水孔５の開設の一
例を示したもので、各鋼管３内に従来公知の中掘り用の
オーガスクリュー10を挿入して、鋼管４内にあるソイル
セメント２を掘削、除去するとともに、鋼管４の下端よ
り下方にあるソイルセメント２の部分を、先端の掘削刃
11を拡開して透水層Ｄのほぼ下端まで掘削、除去し、土
留壁Ａのソイルセメント２部分に通水孔５を開設するの
である。それにより、図４、図５に示すように、土留壁
Ａにより遮断されていた透水層Ｄは両土留壁Ａ，Ａの通
水孔５，５を介して連通し、水流が復元されることにな
る。通水孔５を開設した鋼管４内には、その後必要に応
じてグラベル等で埋め戻すことがある。Various methods are conceivable as a method for opening the water passage hole 5. It is important to open the water hole 5 by work from the ground. FIG. 8 shows an example of the opening of the water hole 5, wherein a conventionally known auger screw 10 for digging is inserted into each steel pipe 3 to excavate and remove the soil cement 2 in the steel pipe 4. At the same time, the portion of the soil cement 2 below the lower end of the steel pipe 4 is
11 is expanded and excavated to almost the lower end of the permeable layer D and removed, and a water hole 5 is opened in the soil cement 2 portion of the retaining wall A. Thereby, as shown in FIG. 4 and FIG. 5, the permeable layer D blocked by the retaining wall A communicates through the water holes 5, 5 of the retaining walls A, A, and the water flow is restored. become. After that, the steel pipe 4 having the water passage hole 5 may be backfilled with a gravel or the like as necessary.
【００１７】図６、図７は、両土留壁Ａ，Ａ間にわたる
水を流通させる手段の他の実施例を示したものである。
図６の実施例では、地下構造物Ｃの建設に先立って、土
留壁Ａ，Ａの対向する通水孔５，５間に砕石などを所要
の厚さに敷き詰めた通水層６を形成する。また、図７の
実施例では、同じく対向する通水孔７，７を連通管７に
より接続するのである。これらのようにすれば、両土留
壁Ａ，Ａ間の水の流通は、通水層６または連通管７を通
して行われるため、通水がより円滑に行われるととも
に、建設地盤Ｂへの水の流通による悪い影響の生ずるの
を防ぐこともできる。FIGS. 6 and 7 show another embodiment of the means for circulating water between the retaining walls A. FIG.
In the embodiment of FIG. 6, prior to the construction of the underground structure C, a water-permeable layer 6 in which crushed stone or the like is spread to a required thickness is formed between the opposed water-permeable holes 5 and 5 of the retaining walls A and A. . Further, in the embodiment shown in FIG. 7, the water passage holes 7, 7 facing each other are connected by the communication pipe 7. With such a configuration, the water flows between the soil retaining walls A, A through the water-permeable layer 6 or the communication pipe 7, so that the water can flow more smoothly and the water can flow into the construction ground B. It can also prevent the adverse effects of distribution.
【００１８】次に、本発明の第２の工法の実施態様につ
いて説明する。この工法は、土留壁Ａが上下に複数段あ
る透水層Ｄ1 ，Ｄ2 を遮断する場合に適用される。こう
した場合には、複数の透水層Ｄ1 ，Ｄ2 は水質が異なっ
たり水頭差のあることが多いことから、それが混合する
と逆流や目詰まりなど好ましくない状態が生じることの
ないように、各透水層Ｄ1 ，Ｄ2 ごとに通水させる必要
がある。ここでは、図９〜図15に示すように、透水層が
上下２段Ｄ1 ，Ｄ2 となっている場合を例としている。
この場合は、図示のように、鋼管Ｅの下端を上段の透水
層Ｄ1 の上端近くに留めおくようにする。Next, an embodiment of the second method of the present invention will be described. This construction method is applied when the retaining wall A blocks the permeable layers D 1 and D 2 having a plurality of upper and lower steps. In such a case, since the plurality of permeable layers D 1 and D 2 often have different water qualities or have different heads, if they are mixed, each of the permeable layers D 1 and D 2 should be prevented so that an undesirable state such as backflow or clogging does not occur. Water must be passed through each of the permeable layers D 1 and D 2 . Here, as shown in FIGS. 9 to 15, an example is shown in which the permeable layer has two upper and lower stages D 1 and D 2 .
In this case, as shown, so as keep fasten the lower end of the steel pipe E near the top of the upper permeable layer D 1.
【００１９】通水孔の開設は上記第１の工法におけると
同様であるが、鋼管４の下方のソイルセメント２の掘削
は、図13に示すように、下段の透水層Ｄ2 の下端を越え
る程度の深さまで行い、上下段の透水層Ｄ1 ，Ｄ2 と連
通する開口部８を形成する。その後は、掘削刃11をたた
んでオーガスクリューを引き上げた後、開口部８を仕切
壁９によって上下に区劃、分断し、透水層Ｄ1 ，Ｄ2 に
各別に連通する通水孔５ａ，５ｂを形成する。それによ
って、複数の透水層Ｄ1 ，Ｄ2 を混合させることなく、
各別な流通復元が図れることになる。The opening of the water hole is the same as in the first method, but the excavation of the soil cement 2 below the steel pipe 4 exceeds the lower end of the lower permeable layer D 2 as shown in FIG. The opening 8 communicating with the upper and lower water permeable layers D 1 and D 2 is formed to about the depth. Then, after pulling up the auger screw Fold the digging edge 11, Kukaku vertically opening 8 by the partition walls 9, divided, water-permeable layer D 1, water passing holes 5a communicating with each other in D 2, 5b is formed. Thereby, without mixing a plurality of permeable layers D 1 and D 2 ,
Each distribution can be restored.
【００２０】仕切壁９を設けるには、図14に示すよう
に、ソイルセメント３の除去された鋼管４の上から受皿
12をワイヤ等で所要位置まで吊り降し、その受皿12上に
モルタル類等13を投入して仕切壁９とする。或は、図15
に示すように、同鋼管４の上からパッカー14を吊り降し
て膨らませ仕切壁９とするのである。なお、仕切壁９を
設けた後は、その鋼管４内を必要に応じてグラベル等で
埋め戻すことができる。In order to provide the partition wall 9, as shown in FIG. 14, a receiving pan is placed on the steel pipe 4 from which the soil cement 3 has been removed.
12 is suspended by a wire or the like to a required position, and mortars 13 and the like 13 are put on the tray 12 to form a partition wall 9. Or Figure 15
As shown in (1), the packer 14 is suspended from above the steel pipe 4 and expanded to form the partition wall 9. After the partition wall 9 is provided, the inside of the steel pipe 4 can be backfilled with gravel or the like as necessary.
【００２１】この第２の工法の場合も、第１の工法にお
けると同様、図11に示すように、土留壁Ａ，Ａの対向す
る通水孔５ａ，５ｂ，５ｂ，５ｂ間に砕石などを敷いた
通水層６を形成し、或は対向する通水孔７ａ，７ａ，７
ｂ，７ｂを連通管７により接続することができる。In the case of the second construction method, as in the first construction method, as shown in FIG. 11, crushed stones and the like are placed between the opposed water holes 5a, 5b, 5b, 5b of the retaining walls A, A. Forming a laid water passage layer 6 or facing water passage holes 7a, 7a, 7
b and 7b can be connected by the communication pipe 7.
【００２２】図16〜図18は、それぞれ、土留壁Ａに建て
込む鋼管４または鋼管４及びＨ形鋼３の他の実施例を示
したものである。図16の実施例のものは、鋼管４の外周
の管軸方向に沿ってフインのような突起条物15を突設し
ている。この突起条物15は、従来鋼管相互の連結に使用
されているような断面Ｏ型やＣ型等の継手部材であって
もよい。このようにすれば、鋼管４の建て込み精度の向
上が図れるとともに、鋼管４とソイルセメント２との機
械的結合が強固になり、その鋼管４も土留壁Ａの耐力材
としても役立つことにもなる。なお、突起条物15は、図
示のように２条に限ることなく、１条或は２条以上適宜
な数設けることができる。FIGS. 16 to 18 show other embodiments of the steel pipe 4 or the steel pipe 4 and the H-section steel 3 to be built into the retaining wall A, respectively. In the embodiment shown in FIG. 16, a projecting strip 15 such as a fin is projected along the pipe axis direction on the outer periphery of the steel pipe 4. The projecting strip 15 may be a joint member having an O-shaped cross section or a C-shaped cross section as conventionally used for connecting steel pipes to each other. In this way, the steel pipe 4 can be installed with improved accuracy, and the mechanical connection between the steel pipe 4 and the soil cement 2 is strengthened, so that the steel pipe 4 also serves as a strength member for the retaining wall A. Become. The number of the protrusions 15 is not limited to two as shown in the figure, but may be one or two or more.
【００２３】また、図17は、鋼管４の外周の管軸方向に
沿って継手部材16を突設するとともに、Ｈ形鋼５の方に
は、この継手部材16に嵌合する部材17を突出して設けて
おき、継手材16と嵌合部材17とを嵌め合せて鋼管４とＨ
形鋼３とを連結して建て込むものである。図示のもの
は、継手部材16としてＯ形の雄部材を用い、嵌合部材17
の方にはこれに外嵌する雌部材を用いているが、これと
は反対に継手部材16の方を雌部材とし、嵌合部材17の方
を雄部材としてもよく、また、両者16，17ともその形
状、構造を限定するものではない。かくすれば、鋼管４
の建て込み精度及び土留壁Ａの強化が一層向上できる。FIG. 17 shows a joint member 16 protruding along the pipe axis direction on the outer periphery of the steel pipe 4 and a member 17 fitted to the joint member 16 protruding toward the H-section steel 5. The joint member 16 and the fitting member 17 are fitted together, and the steel pipe 4 and H
It is built by connecting the shape steel 3. In the illustration, an O-shaped male member is used as the joint member 16 and the fitting member 17 is used.
Although a female member which is fitted to the outside is used for the member, the joint member 16 may be a female member and the fitting member 17 may be a male member. 17 does not limit its shape and structure. Thus, steel pipe 4
And the reinforcement of the retaining wall A can be further improved.
【００２４】[0024]
【発明の効果】以上説明したように、本発明によれば、
地下構造物等の建設において、遮水壁として造成される
ソイルセメント土留壁を利用し、建設終了後は、地下水
を通水させる通水壁としての機能を発揮させることがで
き、それによって、地下水流の復元、維持が何等の動力
を要さずに円滑かつ恒久的にでき、周辺の環境を良好に
保つことができる。As described above, according to the present invention,
In the construction of underground structures, etc., a soil cement retaining wall created as a water impervious wall can be used, and after the construction is completed, it can function as a water permeation wall for permeating ground water. The flow can be restored and maintained smoothly and permanently without any power, and the surrounding environment can be maintained well.
【００２５】そして、その通水化の施工は、土留壁の一
部に鋼管を建て込み、地上よりの作業でしかも従来使用
されている施工機械を用いて、鋼管を通して透水層と連
通する通水孔を精度よく容易に開設でき、地下水通水化
の構造物が経済的に造成できる。[0025] Then, in the construction of the water passage, a steel pipe is erected on a part of the retaining wall, the work is carried out from the ground, and the water is connected to the permeable layer through the steel pipe by using a conventionally used construction machine. Holes can be easily and accurately opened, and a structure for passing groundwater can be economically constructed.
【図１】本発明第一の工法の一実施態様において、土留
壁を造成した状態を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a state in which an earth retaining wall is formed in an embodiment of the first construction method of the present invention.
【図２】同平断面図である。FIG. 2 is a plan sectional view of the same.
【図３】同正断面図である。FIG. 3 is a front sectional view of the same.
【図４】同通水孔を開設した状態を示す側断面図であ
る。FIG. 4 is a side sectional view showing a state in which the water hole is opened.
【図５】同正断面図である。FIG. 5 is a front sectional view of the same.
【図６】土留壁間の水の流通手段の他の実施例を示す側
断面図である。FIG. 6 is a side sectional view showing another embodiment of the water distribution means between the retaining walls.
【図７】同さらに他の実施例を示す側断面図である。FIG. 7 is a side sectional view showing still another embodiment.
【図８】通水孔開設のための掘削の一例を示す正断面図
である。FIG. 8 is a front sectional view showing an example of excavation for opening a water hole.
【図９】本発明第２の工法の一実施態様において、複数
段の通水孔を開設した状態を示す側断面図である。FIG. 9 is a side sectional view showing a state in which a plurality of water holes are opened in one embodiment of the second method of the present invention.
【図10】同正断面図である。FIG. 10 is a front sectional view of the same.
【図11】同土留壁間の水の流通手段の他の実施例を示す
側断面図である。FIG. 11 is a side sectional view showing another embodiment of the water distribution means between the retaining walls.
【図12】同さらに他の実施例を示す側断面図である。FIG. 12 is a side sectional view showing still another embodiment.
【図13】通水孔開設のための掘削の一例を示す正断面図
である。FIG. 13 is a front sectional view showing an example of excavation for opening a water hole.
【図14】仕切壁設置の一実施例を示す正断面図である。FIG. 14 is a front cross-sectional view showing one embodiment of partition wall installation.
【図15】同他の実施例を示す正断面図である。FIG. 15 is a front sectional view showing the other embodiment.
【図16】鋼管建て込みの他の実施例を示す平断面図であ
る。FIG. 16 is a plan sectional view showing another embodiment of the steel pipe installation.
【図17】同さらに他の実施例を示す平断面図である。FIG. 17 is a plan sectional view showing still another embodiment.
Ａ ソイルセメント柱列土留壁 Ｂ 建設地盤 Ｃ 地下構造物 Ｄ，Ｄ1 ，Ｄ2 透水層 Ｅ 不透水層 １ 掘削孔 ２ ソイルセメント ３ Ｈ形鋼 ４ 鋼管 ５，５ａ，５ｂ 通水孔 ６ 通水層 ７ 連通管 ８ 開口部 ９ 仕切壁 10 オーガスクリュー 11 掘削刃 12 受皿 13 モルタル類 14 パッカー 15 突条物 16 継手材 17 嵌合部材A soil cement pillar column soil retaining wall B construction ground C underground structure D, D 1 , D 2 permeable layer E impervious layer 1 drill hole 2 soil cement 3 H section steel 4 steel pipe 5,5a, 5b water hole 6 water flow Layer 7 Communication pipe 8 Opening 9 Partition wall 10 Auger screw 11 Drilling blade 12 Receiving tray 13 Mortars 14 Packer 15 Ridge 16 Joint material 17 Fitting member
Claims (5)
土留壁を、建設地盤を挟み、透水層を越えて不透水層ま
で根入れして造成する工法において、該土留壁の一部
に、鋼管を、その下端が上記透水層に達しない深さに建
て込み、その鋼管を通して、その下部にあるソイルセメ
ント部分を掘削し、該土留壁に透水層と連通する通水孔
を開設することを特徴とする、ソイルセメント柱列土留
壁を用いた地下水通水化工法。1. A method of constructing a soil cement column retaining soil wall made of H-shaped steel as a core material by sandwiching the construction ground and penetrating a permeable layer beyond a permeable layer to a part of the retaining wall. The steel pipe is erected at a depth such that its lower end does not reach the above-mentioned permeable layer, the soil cement portion at the lower part thereof is excavated through the steel pipe, and a water hole communicating with the permeable layer is formed in the retaining wall. Groundwater flow method using soil cement column soil retaining wall.
土留壁を、建設地盤を挟み、上下複数にわたる透水層を
越えて不透水層まで根入れして造成する工法において、
該土留壁の一部に、鋼管を、その下端が上段にある透水
層に達しない深さに建て込み、その鋼管を通して、その
下部にあるソイルセメント部分を掘削し、該土留壁に透
水層と連通する開口部を開設し、その開口部内を、各透
水層に各別に連通する通水孔に区劃形成することを特徴
とする、ソイルセメント柱列土留壁を用いた地下水通水
化工法。2. A method of constructing a soil cement column retaining wall having H-shaped steel as a core material by sandwiching the construction ground, piercing a plurality of upper and lower permeable layers to an impermeable layer, and forming the soil cement column.
In a part of the retaining wall, a steel pipe is erected at a depth such that the lower end does not reach the upper permeable layer, and a soil cement portion at the lower part is excavated through the steel pipe, and a permeable layer is formed on the retaining wall. A groundwater permeation method using a soil cement columnar soil retaining wall, characterized in that an opening for communication is opened, and the inside of the opening is partitioned into water holes that individually communicate with each permeable layer.
ト柱列土留壁の対向する通水孔を、砕石等を敷き詰めた
通水層または連通管で接続することを特徴とする、請求
項１または２記載のソイルセメント柱列土留壁を用いた
地下水通水化工法。3. A water-permeable layer or a communication pipe lined with crushed stones or the like, which connects opposed water-permeable holes of a soil cement column retaining wall formed across the construction ground. Or a method of passing groundwater using the soil cement column soil retaining wall described in 2 or 2.
む鋼管の外周管軸方向にフイン等の突起条物を取り付け
たことを特徴とする、請求項１または２または３記載の
ソイルセメント柱列土留壁を用いた地下水通水化工法。4. The soil cement according to claim 1, wherein a projecting strip such as a fin is attached in the axial direction of the outer peripheral pipe of the steel pipe to be built in a part of the soil cement columnar retaining wall. Groundwater permeation method using columnar soil retaining wall.
む鋼管の外周管軸方向に継手部材を取り付けるととも
に、該土留壁のＨ形鋼に上記継手部材との嵌合部材を取
り付け、鋼管とＨ形鋼とを連結することを特徴とする、
請求項１または２または３記載のソイルセメント柱列土
留壁を用いた地下水通水化工法。5. A steel pipe, wherein a joint member is attached in the axial direction of an outer peripheral pipe of a steel pipe to be erected on a part of a soil cement pillar row retaining wall, and a fitting member to the joint member is attached to an H-shaped steel of the retaining wall. And an H-section steel,
A method for permeating groundwater using the soil cement columnar soil retaining wall according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10226531A JP2000045313A (en) | 1998-07-27 | 1998-07-27 | Ground water permeation method making use of soil cement column strip earth retaining wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10226531A JP2000045313A (en) | 1998-07-27 | 1998-07-27 | Ground water permeation method making use of soil cement column strip earth retaining wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000045313A true JP2000045313A (en) | 2000-02-15 |
Family
ID=16846606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10226531A Pending JP2000045313A (en) | 1998-07-27 | 1998-07-27 | Ground water permeation method making use of soil cement column strip earth retaining wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000045313A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006299730A (en) * | 2005-04-25 | 2006-11-02 | Chem Grouting Co Ltd | Soil improving method |
| JP2010095941A (en) * | 2008-10-17 | 2010-04-30 | Ohbayashi Corp | Installation method for precast pile |
-
1998
- 1998-07-27 JP JP10226531A patent/JP2000045313A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006299730A (en) * | 2005-04-25 | 2006-11-02 | Chem Grouting Co Ltd | Soil improving method |
| JP2010095941A (en) * | 2008-10-17 | 2010-04-30 | Ohbayashi Corp | Installation method for precast pile |
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