JP5010998B2 - Processing equipment, processing method of excavated sediment - Google Patents

Processing equipment, processing method of excavated sediment Download PDF

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JP5010998B2
JP5010998B2 JP2007161793A JP2007161793A JP5010998B2 JP 5010998 B2 JP5010998 B2 JP 5010998B2 JP 2007161793 A JP2007161793 A JP 2007161793A JP 2007161793 A JP2007161793 A JP 2007161793A JP 5010998 B2 JP5010998 B2 JP 5010998B2
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adjustment tank
equipment
muddy water
mud
fluidization
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JP2009001989A (en
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慶造 三木
忠彦 辻
一彦 的場
洋志 古賀
勉 屋代
顕則 橋本
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Obayashi Corp
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Description

本発明は、シールド機の掘進により生じる掘削土砂の処理方法に関する。   The present invention relates to a method for treating excavated sediment caused by excavation of a shield machine.

シールド機の掘進により生じる掘削土砂は産業廃棄物として処分しなければならないので処理費用がかかる。そこで、この掘削土砂を裏込材や埋戻材として利用する技術が開発されている。   Since the excavated earth and sand generated by the shield machine must be disposed of as industrial waste, processing costs are incurred. Therefore, a technique for using the excavated earth and sand as a backing material and a backfilling material has been developed.

例えば、特許文献１には、掘削土砂に水、固化材等を添加して裏込材を作製し、この裏込材をセグメントと地山との間のテールボイドに充填する方法が開示されている。この方法では、まず、地上で掘削土砂に水及び固化材を添加して比重、マーシュファンネル粘性、フロー値をそれぞれ１．０５〜１．３、１８〜２６秒、８〜１５秒に調整して長距離の圧送が可能な裏込材を作製し、次に、この裏込材をポンプでトンネル内の注入口に圧送して、注入口で急結材と混合してテールボイドに充填する。   For example, Patent Document 1 discloses a method in which water, a solidifying material, etc. are added to excavated earth and sand to produce a backing material, and this backing material is filled in a tail void between a segment and a natural ground. . In this method, first, water and a solidified material are added to excavated soil on the ground, and the specific gravity, Marsh funnel viscosity, and flow value are adjusted to 1.05 to 1.3, 18 to 26 seconds, and 8 to 15 seconds, respectively. A backing material capable of long-distance pumping is prepared, and then the backing material is pumped to an injection port in the tunnel by a pump, mixed with a quick setting material at the injection port, and filled into a tail void.

また、特許文献２には、掘削土砂に水及び固化材等を混合して埋戻材である流動化処理土を作製し、この流動化処理土をインバート部に打設する方法が開示されている。この方法では、まず、トンネル内に設けられた撹拌装置に搬送された掘削土砂に水及び固化材等を添加して流動化処理土を作製し、次に、この流動化処理土をポンプでインバート部に圧送して、打設する。
特開２００１−４９９９４号公報 特開２００５−１３９８４０号公報 Patent Document 2 discloses a method for producing fluidized treated soil as a backfill material by mixing water and a solidified material with excavated soil and placing the fluidized treated soil in an invert portion. Yes. In this method, first, fluidized soil is prepared by adding water and solidifying material to excavated sediment transported to a stirrer provided in the tunnel, and then this fluidized soil is inverted by a pump. Pumped to the part and placed.
JP 2001-49994 A JP 2005-139840 A

しかしながら、上述した特許文献１に記載の方法では、注入口から離れている地上で裏込材を作製するので、地上から注入口までの長距離を圧送可能となるように裏込材の比重及び粘性が限定されてしまうという問題点があった。
さらに、圧送距離が長いので配管距離が長くなり、配管の設置作業の手間がかかるという問題点があった。 However, in the method described in Patent Document 1 described above, since the backing material is produced on the ground away from the injection port, the specific gravity of the backing material and the back material so that a long distance from the ground to the injection port can be pumped. There was a problem that viscosity was limited.
Furthermore, since the pumping distance is long, the piping distance becomes long, and there is a problem that it takes time and labor for installing the piping.

また、特許文献２に記載の方法では、掘削土砂の性質は地質の変化にともなって変化しているにもかかわらず、掘削土砂の比重調整や粒径調整をおこなわずに水及び固化材等を添加して流動化処理土を作製し、この流動化処理土をインバート部に打設するので、インバート部の品質にばらつきが生じるという問題点があった。   In addition, in the method described in Patent Document 2, water and solidified material or the like are used without adjusting the specific gravity or particle size of the excavated sediment, even though the nature of the excavated sediment has changed with the change in geology. Since the fluidized soil was added to prepare the fluidized soil, and this fluidized soil was placed in the invert part, there was a problem that the quality of the invert part varied.

そこで、本発明は、上記のような従来の問題に鑑みなされたものであって、安定した品質の裏込材や流動化処理土を供給可能で、かつ、それらの圧送距離が短くてすむ掘削土砂の処理設備を提供することを目的とする。   Accordingly, the present invention has been made in view of the above-described conventional problems, and excavation that can supply a stable quality backing material and fluidized soil and that requires a short pumping distance. The purpose is to provide earth and sand treatment facilities.

前記目的を達成するため、本発明の処理設備は、シールド機の掘進により生じる掘削土砂を処理するための処理設備であって、前記掘削土砂を解泥して泥水を作製する解泥設備と、前記泥水のうち所定の粒径以上の未溶解固形分を除去した所定の比重の泥水とセメント等の固化材とを混合して裏込材を作製する裏込設備と、前記除去した未溶解固形分を含む泥水と、前記固化材とを混合して流動化処理土を作製する流動化設備と、を前記シールド機の掘進により構築されるトンネル内に備えることを特徴とする（第１の発明）。
本発明による処理設備によれば、解泥設備を備えているので、所定の比重の泥水を作製することが可能となる。また、裏込設備を備えているので、その泥水と固化材とを混合して裏込材を作製することが可能となる。
そして、解泥設備及び裏込設備は、トンネル内に設けられているので、解泥設備から裏込設備までの泥水の搬送距離、及び裏込設備から裏込材を注入するための注入口までの裏込材の圧送距離が短くてすむ。さらに、裏込材の圧送距離が短くてすむので、圧送距離が長い場合に比べて裏込材の比重及び粘性の範囲を広くすることができる。したがって、これまでよりも多くの量の掘削土砂をリサイクルすることが可能となる。 To achieve the above object, the processing equipment of the present invention is a treatment facility for processing drilling soil caused by excavation of the shield machine, Kaidoro facility of making mud water and Kaidoro the excavating soil and , A back-filling facility for producing a backing material by mixing muddy water having a predetermined specific gravity from which the undissolved solid content of a predetermined particle size or more in the muddy water is removed and a solidifying material such as cement, and the removed undissolved A mud containing solid content and a fluidizing facility for mixing the solidified material to produce a fluidized soil are provided in a tunnel constructed by excavation of the shield machine (first invention).
According to the treatment facility of the present invention, since the mud removal facility is provided, it becomes possible to produce muddy water having a predetermined specific gravity. Moreover, since the backing equipment is provided, it becomes possible to produce the backing material by mixing the muddy water and the solidifying material.
And since the mud removal equipment and the backfilling equipment are provided in the tunnel, the muddy water transport distance from the thawing equipment to the backfilling equipment and from the backfilling equipment to the inlet for injecting the backfilling material The pumping distance of the backing material can be short. Furthermore, since the pumping distance of the backing material can be short, the specific gravity and viscosity range of the backing material can be widened as compared with the case where the pumping distance is long. Therefore, it becomes possible to recycle a larger amount of excavated sediment than before.

また、流動化設備を更に備えているので、解泥設備で作製された泥水と固化材とを混合して埋戻材の流動化処理土を作製することが可能となる。
そして、流動化設備は、トンネル内に設けられているので、流動化設備から流動化処理土を打設する位置までの圧送距離が短くてすむ。さらに、流動化処理土の圧送距離が短くてすむので、圧送距離が長い場合よりも流動化処理土の比重及び粘性の範囲を広くすることが可能となる。 Further, the flow since whether further comprising a facility, it is possible to manufacture the fluidizing process soil backfilling material by mixing a and mud made by Kaidoro equipment solidification agent.
Since the fluidization facility is provided in the tunnel, the pumping distance from the fluidization facility to the position where the fluidized soil is to be placed can be shortened. Further, since the pumping distance of the fluidized soil is short, it is possible to widen the specific gravity and viscosity range of the fluidized soil than when the pumping distance is long.

第２の発明は、第１の発明において、前記裏込設備、前記流動化設備は、切羽に向かって左右に振り分けて配置されていることを特徴とする。
本発明による処理設備によれば、例えば、トンネル内の切羽に向かって左側に裏込設備を、右側に流動化設備を配置するので、裏込材や流動化処理土を効率良く作製することが可能となる。無論、トンネル内の切羽に向かって右側に裏込設備を、左側に流動化設備を配置しても同様の効果が得られる。
第３の発明は、第２の発明において、前記未溶解固形分を除去した泥水を貯蔵する裏込用調整槽と、前記除去した未溶解固形分を含む泥水を貯蔵する流動化用調整槽と、前記裏込用調整槽に貯蔵された泥水の比重が第１の所定値より小さい場合に、前記流動化用調整槽に貯蔵された泥水を前記裏込用調整槽に供給し、前記流動化用調整槽に貯蔵された泥水の比重が、前記第１の所定値よりも大きい第２の所定値よりも大きい場合に、前記裏込用調整槽に貯蔵された泥水を前記流動化用調整槽に供給する手段と、を備えることを特徴とする。 The second invention is characterized in that, in the first invention, the back-facing equipment and the fluidization equipment are arranged in a left-right manner toward the face.
According to the treatment equipment according to the present invention, for example, the back-facing equipment is arranged on the left side and the fluidizing equipment is arranged on the right side toward the face in the tunnel, so that it is possible to efficiently produce the backing material and the fluidized soil. It becomes possible. Of course, the same effect can be obtained by placing the backside equipment on the right side and the fluidizing equipment on the left side of the face in the tunnel.
3rd invention is the adjustment tank for backfill which stores the muddy water which removed the said undissolved solid content in the 2nd invention, The adjustment tank for fluidization which stores the muddy water containing the said undissolved solid content removed, When the specific gravity of the muddy water stored in the adjustment tank for backfilling is smaller than a first predetermined value, the muddy water stored in the adjustment tank for fluidization is supplied to the adjustment tank for backfilling, and the fluidization When the specific gravity of the muddy water stored in the adjustment tank is larger than a second predetermined value that is larger than the first predetermined value, the muddy water stored in the adjustment tank for backfilling is converted into the adjustment tank for fluidization. And means for supplying to the apparatus.

第４の発明の掘削土砂の処理方法は、シールド機の掘進により生じる掘削土砂の処理方法において、前記シールド機の掘進により構築されるトンネル内で、前記掘削土砂を解泥し、所定の粒径以上の未溶解固形分を除去して所定の比重の泥水を作製し、前記泥水とセメント等の固化材とを混合して裏込材を作製し、前記トンネル内で、前記除去した未溶解固形分を含む泥水とセメント等の固化材とを混合して流動化処理土を作製することを特徴とする。
本発明による掘削土砂の処理方法によれば、シールド機の掘進により生じる掘削土砂を裏込材として利用するので、地上に排出する掘削土砂を少なくすることができる。 According to a fourth aspect of the present invention, there is provided a processing method for excavated earth and sand generated by excavation of a shield machine, wherein the excavated earth and sand is defrosted in a tunnel constructed by the excavation of the shield machine and a predetermined particle size is obtained. The above undissolved solid content is removed to prepare a muddy water of a predetermined specific gravity, and the muddy water and a solidifying material such as cement are mixed to prepare a backing material , and the removed undissolved solid in the tunnel A fluidized soil is produced by mixing muddy water containing water and a solidifying material such as cement .
According to the excavation earth and sand processing method according to the present invention, the excavation earth and sand generated by the digging of the shield machine is used as the backing material, so that the excavation earth and sand discharged to the ground can be reduced.

また、シールド機の掘進により生じる掘削土砂を流動化処理土として利用するので、地上に排出する掘削土砂を少なくすることができる。 Moreover, since the excavated sediment generated by the excavation of the shield machine is used as the fluidized soil, the excavated sediment discharged to the ground can be reduced.

第５の発明は、第４の発明において、前記裏込材を作製する裏込設備、前記流動化処理土を作製する流動化設備を設け、該裏込設備、該流動化設備を切羽に向かって左右に振り分けて配置することを特徴とする。
本発明による掘削土砂の処理方法によれば、例えば、トンネル内の切羽に向かって左側に裏込設備を、右側に流動化設備を配置するので、裏込材や流動化処理土を効率良く作製することが可能となる。無論、トンネル内の切羽に向かって右側に裏込設備を、左側に流動化設備を配置しても同様の効果が得られる。 According to a fifth invention, in the fourth invention, there is provided a back-facing equipment for producing the back-filling material and a fluidizing equipment for producing the fluidized soil, and the back-facing equipment and the fluidizing equipment are directed toward the face. It is characterized by being arranged to the left and right.
According to the processing method of excavated earth and sand according to the present invention, for example, the backside equipment is arranged on the left side and the fluidizing equipment is arranged on the right side toward the face in the tunnel. It becomes possible to do. Of course, the same effect can be obtained by placing the backside equipment on the right side and the fluidizing equipment on the left side of the face in the tunnel.

第６の発明は、第５の発明において、前記未溶解固形分を除去した泥水を貯蔵する裏込用調整槽と、前記除去した未溶解固形分を含む泥水を貯蔵する流動化用調整槽と、を設け、前記裏込用調整槽に貯蔵された泥水の比重が第１の所定値より小さい場合に、前記流動化用調整槽に貯蔵された泥水を前記裏込用調整槽に供給し、前記流動化用調整槽に貯蔵された泥水の比重が、前記第１の所定値よりも大きい第２の所定値よりも大きい場合に、前記裏込用調整槽に貯蔵された泥水を前記流動化用調整槽に供給することを特徴とする。In a fifth aspect of the present invention, in the fifth aspect of the present invention, a back-filling adjustment tank that stores the muddy water from which the undissolved solid content has been removed, and a fluidization adjustment tank that stores the muddy water containing the removed undissolved solid content, When the specific gravity of the muddy water stored in the back adjustment tank is smaller than the first predetermined value, the muddy water stored in the fluidization adjustment tank is supplied to the back adjustment tank. When the specific gravity of the muddy water stored in the adjustment tank for fluidization is greater than a second predetermined value that is greater than the first predetermined value, the fluid stored in the adjustment tank for backfilling is fluidized. It is characterized in that it is supplied to an adjustment tank.

本発明の処理設備を用いることにより、安定した品質の流動化処理土を供給可能で、かつ、その流動化処理土の圧送距離が短くなる。   By using the treatment facility of the present invention, it is possible to supply fluidized soil with stable quality, and the pumping distance of the fluidized soil is shortened.

以下、本発明に係るシールド機の好ましい実施形態について図面を用いて詳細に説明する。
図１は、本発明の実施形態に係る処理設備１の側面図である。図１に示すように、処理設備１は、シールド機６の掘削により生じる掘削土砂を解泥して裏込用泥水及び流動化用泥水を作製する解泥設備２と、裏込用泥水とセメント等の固化材とを混合して裏込材を作製する裏込設備３と、流動化用泥水と固化材とを混合して埋戻しに利用するための流動化処理土を作製する流動化設備４とから構成されている。 Hereinafter, preferred embodiments of a shield machine according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view of a processing facility 1 according to an embodiment of the present invention. As shown in FIG. 1, the treatment facility 1 includes a demolition facility 2 for defloating the excavated sediment generated by excavation of the shield machine 6 to produce a backfill mud and a fluidized mud, a backfill mud and cement. Mixing with a solidifying material such as backlining equipment 3 to make a backing material, and fluidizing equipment to mix fluidized mud and solidification material to produce fluidized soil for backfilling 4.

処理設備１は、シールド機６の後方に配置される第一架台５ａ、第二架台５ｂに積載され、シールド機６の掘削により構築されるトンネル７内に設けられている。具体的には、解泥設備２は第一架台５ａに、裏込設備３及び流動化設備４は第二架台５ｂにそれぞれ積載されている
シールド機６の後端部と第一架台５ａの切羽側端部、及び第一架台５ａの坑口側端部と第二架台５ｂの切羽側端部はそれぞれ連結手段８ａ、８ｂで連結されており、第一架台５ａ及び第二架台５ｂはシールド機６の掘進に追随して移動可能である。
第一架台５ａ、第二架台５ｂは、トンネル内に構築された覆工体１０の内周面を滑って移動するための移動手段９をそれぞれ備えている。 The processing facility 1 is provided in a tunnel 7 loaded on the first frame 5a and the second frame 5b disposed behind the shield machine 6 and constructed by excavation of the shield machine 6. Specifically, the mud removal facility 2 is loaded on the first frame 5a, and the back-facing facility 3 and the fluidization facility 4 are loaded on the second frame 5b, respectively. The rear end of the shield machine 6 and the face of the first frame 5a The side end, the well end side end of the first mount 5a, and the face side end of the second mount 5b are connected by connecting means 8a and 8b, respectively, and the first mount 5a and the second mount 5b are shield machines 6 respectively. It is possible to move following the excavation.
The first mount 5a and the second mount 5b are each provided with moving means 9 for sliding and moving on the inner peripheral surface of the lining body 10 constructed in the tunnel.

移動手段９は、両架台５ａ、５ｂの重量を支持するための支持部９ａと、覆工体１０の内周面に沿って滑動するための滑動部９ｂとから構成される。滑動部９ｂの材質は、本実施形態では、摩擦抵抗が小さく、かつ、摩耗が少ないテフロン（登録商標）を用いた。ただし、テフロンに限定されるものではなく、摩擦抵抗が小さく、かつ、摩耗が少ない材料であれば他の材料を用いてもよい。   The moving means 9 is composed of a support portion 9a for supporting the weights of the two racks 5a and 5b, and a sliding portion 9b for sliding along the inner peripheral surface of the covering body 10. In the present embodiment, the sliding portion 9b is made of Teflon (registered trademark) with low frictional resistance and low wear. However, the material is not limited to Teflon, and other materials may be used as long as the material has low frictional resistance and low wear.

図２は、解泥設備２を拡大して示す側面図であり、図３及び図４は、それぞれ図２のＡ−Ａ矢視図、Ｂ−Ｂ矢視図である。図２〜図４に示すように、解泥設備２は、土塊状の掘削土砂を破砕する解砕機２０と、破砕された掘削土砂に水を加えて一次溶解泥水を作製する一次解泥機２１と、一次溶解泥水内に含まれる未溶解固形分を除去する第一の振動ふるい２３と、第一の振動ふるい２３を通過した一次溶解泥水の比重を調整して裏込用泥水を作製する裏込用調整槽２４と、第一の振動ふるい２３を通過しない未溶解固形分に水を加えて二次溶解泥水を作製する二次解泥機２６と、二次溶解泥水に含まれる未溶解固形分を除去する第二の振動ふるい２８と、第二の振動ふるい２８を通過した二次溶解泥水の比重を調整して流動化用泥水を作製する流動化用調整槽２５と、破砕された掘削土砂、未溶解固形分のそれぞれに加える水を貯留する第一の水タンク２２、第二の水タンク２７とを備えている。   FIG. 2 is an enlarged side view showing the mud removal facility 2, and FIGS. 3 and 4 are views taken along arrows AA and BB in FIG. 2, respectively. As shown in FIGS. 2 to 4, the demolition facility 2 includes a pulverizer 20 that crushes a block of excavated earth and sand, and a primary dehumidifier 21 that produces water by adding water to the crushed excavated earth and sand. And a first vibrating screen 23 that removes undissolved solids contained in the primary dissolved mud, and a back surface for adjusting the specific gravity of the primary dissolved mud that has passed through the first vibrating screen 23 to produce a back mud. The adjustment tank 24 for filling, the secondary dissolution mud 26 which adds water to the undissolved solid content which does not pass the 1st vibration sieve 23, and produces a secondary dissolution mud, The undissolved solid contained in a secondary dissolution mud A second vibrating screen 28 for removing the components, a fluidizing adjustment tank 25 for adjusting the specific gravity of the secondary dissolved mud that has passed through the second vibrating screen 28 to produce fluidized mud, and crushed excavation A first water tank 22 for storing water to be added to the earth and sand and undissolved solids; And a water tank 27.

解砕機２０は、土塊状の掘削土砂を所定の外径よりも小さくなるように破砕する。
一次解泥機２１は、第一の水タンク２２から供給される水と解砕機２０で破砕された掘削土砂とを混合し、掘削土砂を溶解して一次溶解泥水を作製する。
第一の振動ふるい２３は、一次溶解泥水のうち、所定の粒径よりも大きい未溶解固形分を除去する。
裏込用調整槽２４は、第一の振動ふるい２３を通過した一次溶解泥水の比重を所定の値になるように調整して裏込用泥水を作製するとともに、この裏込用泥水を貯留する。 The crusher 20 crushes the massive excavated earth and sand so as to be smaller than a predetermined outer diameter.
The primary demolition machine 21 mixes the water supplied from the first water tank 22 and the excavated earth and sand crushed by the crusher 20, and dissolves the excavated earth and sand to produce primary dissolved mud water.
The first vibrating screen 23 removes undissolved solid content larger than a predetermined particle size from the primary dissolved mud.
The adjustment tank 24 for backfilling adjusts the specific gravity of the primary dissolved mud that has passed through the first vibrating screen 23 to a predetermined value to produce the backwater muddy water, and stores this backwater muddy water. .

二次解泥機２６は、第一の振動ふるい２３で除去された未溶解固形分と水とを混合し、未溶解固形分を溶解して二次溶解泥水を作製する。
第二の振動ふるい２８は、二次溶解泥水のうち、所定の粒径よりも大きい未溶解固形分を除去する。
流動化用調整槽２５は、第二の振動ふるい２８を通過した二次溶解泥水の比重を所定の値になるように調整して流動化用泥水を作製するとともに、この流動化用泥水を貯留する。 The secondary sludge machine 26 mixes the undissolved solid content removed by the first vibrating screen 23 and water, dissolves the undissolved solid content, and produces a secondary dissolved mud water.
The second vibrating screen 28 removes undissolved solid content larger than a predetermined particle size from the secondary dissolved mud.
The fluidizing adjustment tank 25 adjusts the specific gravity of the secondary dissolved mud that has passed through the second vibrating screen 28 to a predetermined value to produce the fluidized mud, and stores the fluidized mud. To do.

また、図３及び図４に示すように、第一架台５ａの切羽に向かって左側（以下、単に「左側」あるいは「右側」というときは、切羽に向かって左側あるいは右側であることを意味するものとする。）に、主に裏込用泥水を作製するための装置類、すなわち、解砕機２０、第一の水タンク２２、一次解泥機２１、第一の振動ふるい２３、裏込用調整槽２４を配置した。また、第一架台５ａの右側に、主に流動化用泥水を作製するための装置類、すなわち、第二の水タンク２７、二次解泥機２６、第二の振動ふるい２８、流動化用調整槽２５を配置した。   As shown in FIGS. 3 and 4, the left side (hereinafter simply referred to as “left side” or “right side”) refers to the left side or the right side toward the face of the first mount 5 a. ), Mainly devices for producing the back mud, ie, the crusher 20, the first water tank 22, the primary mud breaker 21, the first vibrating screen 23, and the back The adjustment tank 24 was arranged. In addition, on the right side of the first mount 5a, devices mainly for producing fluidized mud, that is, the second water tank 27, the secondary sludger 26, the second vibrating screen 28, and the fluidizing fluid are used. The adjustment tank 25 was arranged.

主に裏込用泥水を作製するための装置類を左側にまとめて配置し、主に流動化用泥水を作製するための装置類を右側にまとめて配置することにより、掘削土砂や一次溶解泥水や二次溶解泥水を送給するための各配管を短くできるので、解泥設備２をトンネル７内の狭いスペースに構築することが可能となる。   By mainly arranging the equipment for producing the backwater mud on the left side, and mainly arranging the equipment for producing the fluidized mud on the right side, Since each pipe for feeding the secondary dissolved mud water can be shortened, the demolition facility 2 can be constructed in a narrow space in the tunnel 7.

なお、本実施形態においては、第一架台５ａの左側に裏込用泥水を作製するための装置類を、右側に流動化用泥水を作製するための装置類を配置する場合について説明したが、左右を逆にしてもよい。   In addition, in this embodiment, although the apparatus for producing the back mud on the left side of the first mount 5a has been described, the apparatus for producing the fluid mud on the right side has been described. You may reverse right and left.

図５は、本実施形態における解泥設備２を用いた解泥の手順を示す図である。図５に示すように、シールド機６の掘進により生じた様々な大きさの土塊状の掘削土砂はベルトコンベア１１にて後方に運搬されて、所定の量だけ解砕機２０に投入され（図中右上）、残りの掘削土砂はトンネルの外に搬出される。   FIG. 5 is a diagram illustrating a procedure of demolition using the demolition facility 2 in the present embodiment. As shown in FIG. 5, the lump-shaped excavated sand of various sizes generated by the excavation of the shield machine 6 is conveyed rearward by the belt conveyor 11 and is put into the crusher 20 by a predetermined amount (in the figure). Upper right), the remaining excavated sediment is carried out of the tunnel.

解砕機２０に投入された土塊状の掘削土砂は、例えば、外径が５０ｍｍ以下になるように破砕される。破砕された掘削土砂は、解砕機２０の下側に設けられた一次解泥機２１に送給される。   The lump-shaped excavated earth and sand thrown into the crusher 20 is crushed so that the outer diameter becomes 50 mm or less, for example. The crushed excavated earth and sand is fed to the primary demolition machine 21 provided on the lower side of the crusher 20.

なお、本実施形態においては、解砕機２０で破砕する土塊状の掘削土砂の外径を５０ｍｍ以下としたが、これに限定されるものではなく、設計等により決定された値を適用する。   In addition, in this embodiment, although the outer diameter of the block-shaped excavation earth and sand crushed with the crusher 20 was 50 mm or less, it is not limited to this, The value determined by design etc. is applied.

一次解泥機２１に送給された掘削土砂は、第一の水タンク２２から供給された水と混合され、溶解して一次溶解泥水となる。一次溶解泥水は、ポンプＰ１で第一の振動ふるい２３に送給される。   The excavated earth and sand fed to the primary demolition machine 21 is mixed with the water supplied from the first water tank 22 and melted to become primary dissolved mud water. The primary dissolved mud is fed to the first vibrating screen 23 by the pump P1.

第一の振動ふるい２３に送給された一次溶解泥水のうち、粒径が０．８５ｍｍ以下の泥水はふるいを通過し、第一の振動ふるい２３の下側に設けられた裏込用調整槽２４に送給される。一方、粒径が０．８５ｍｍよりも大きい未溶解固形分は、ふるいを通過できずに除去される。この除去された未溶解固形分は二次解泥機２６に送給され、水と混合される
なお、本実施形態においては、第一の振動ふるい２３を通過する一次溶解泥水の粒径を０．８５ｍｍとしたが、これに限定されるものではなく、設計等により決定された値を適用する。 Out of the primary dissolved mud fed to the first vibrating screen 23, the mud having a particle size of 0.85 mm or less passes through the screen, and the back-up adjustment tank provided on the lower side of the first vibrating screen 23. 24. On the other hand, the undissolved solid content having a particle size larger than 0.85 mm cannot be passed through the sieve and is removed. The removed undissolved solid content is fed to the secondary sludge machine 26 and mixed with water. In the present embodiment, the particle size of the primary dissolved mud water passing through the first vibrating screen 23 is set to 0. However, the present invention is not limited to this, and a value determined by design or the like is applied.

裏込用調整槽２４に送給された一次溶解泥水は、比重が、例えば、１．３５となるように第一の水タンク２２から供給された水と混合して調整されて、裏込用泥水となる。裏込用泥水は、裏込用調整槽２４に貯蔵され、裏込材を注入する際（後述する）に裏込設備３に送給される。   The primary dissolved mud supplied to the adjustment tank 24 for backfilling is adjusted by mixing with water supplied from the first water tank 22 so that the specific gravity is, for example, 1.35. It becomes muddy water. The back mud is stored in the back adjustment tank 24 and is fed to the back equipment 3 when the back material is injected (described later).

二次解泥機２６に送給された未溶解固形分は、第二の水タンク２７から供給された水と混合され、溶解して二次溶解泥水となる。二次溶解泥水は、ポンプＰ２で第二の振動ふるい２８に送給される。   Undissolved solids fed to the secondary sludge machine 26 are mixed with the water supplied from the second water tank 27 and dissolved to form secondary dissolved mud water. The secondary dissolved mud is fed to the second vibrating screen 28 by the pump P2.

第二の振動ふるい２８に送給された二次溶解泥水のうち、粒径が２．００ｍｍ以下の泥水はふるいを通過し、第二の振動ふるい２８の下側に設けられた流動化用調整槽２５に送給される。一方、粒径が２．００ｍｍよりも大きい未溶解固形分は、ふるいを通過できずに除去される。この除去された未溶解固形分は、再び二次解泥機２６に送給される。   Of the secondary dissolved mud fed to the second vibrating screen 28, mud having a particle size of 2.00 mm or less passes through the screen and is adjusted for fluidization provided below the second vibrating screen 28. It is fed to the tank 25. On the other hand, the undissolved solid content having a particle size larger than 2.00 mm is removed without passing through the sieve. The removed undissolved solid content is again fed to the secondary sludge machine 26.

なお、本実施形態においては、第二の振動ふるい２８を通過する二次溶解泥水の粒径を２．００ｍｍとしたが、これに限定されるものではなく、設計等により決定された値を適用する。   In the present embodiment, the particle size of the secondary dissolved mud passing through the second vibrating screen 28 is set to 2.00 mm, but is not limited to this, and a value determined by design or the like is applied. To do.

流動化用調整槽２５に送給された二次溶解泥水は、比重が、例えば、１．５０になるように第二の水タンク２７から供給された水と混合して調整されて、流動化用泥水となる。流動化用泥水は、流動化用調整槽２５に貯蔵され、インバート等を打設する際（後述する）に流動化設備４に送給される。   The secondary dissolved muddy water fed to the fluidizing adjustment tank 25 is mixed and adjusted with the water supplied from the second water tank 27 so that the specific gravity becomes, for example, 1.50, and fluidized. It becomes muddy water. The fluidizing muddy water is stored in the fluidizing adjustment tank 25 and supplied to the fluidizing equipment 4 when invert or the like is placed (described later).

裏込用調整槽２４と流動化用調整槽２５とは泥水を送給可能な連結管２９ａ、２９ｂで連結されている。具体的には、裏込用調整槽２４から流動化用調整槽２５に裏込用泥水を送給するための連結管２９ａと、流動化用調整槽２５から裏込用調整槽２４に流動化用泥水を送給するための連結管２９ｂとが設けられている。裏込用泥水の比重が１．３５よりも小さい場合には、比重が１．５０の流動化用泥水をポンプＰ３で裏込用調整槽２４に適量供給することにより裏込用泥水の比重を容易に１．３５にすることができる。また、流動化用泥水の比重が１．５０よりも大きい場合には、比重が１．３５の裏込用泥水をポンプＰ４で流動化用調整槽２５に適量供給することにより流動化用泥水の比重を容易に１．５０にすることができる。   The adjustment tank 24 for backfilling and the adjustment tank 25 for fluidization are connected by connecting pipes 29a and 29b capable of feeding muddy water. Specifically, the connecting pipe 29a for feeding the back mud from the back adjustment tank 24 to the fluidization adjustment tank 25, and the fluidization from the fluidization adjustment tank 25 to the back adjustment tank 24. A connecting pipe 29b for supplying the muddy water is provided. If the specific gravity of the back mud is smaller than 1.35, the specific gravity of the back mud is adjusted by supplying an appropriate amount of fluidized mud with a specific gravity of 1.50 to the back adjustment tank 24 with the pump P3. It can be easily 1.35. Further, when the specific gravity of the fluidizing mud is larger than 1.50, the fluidizing mud is supplied by supplying an appropriate amount of the backing mud having a specific gravity of 1.35 to the fluidizing adjustment tank 25 by the pump P4. The specific gravity can be easily set to 1.50.

図６は、本実施形態に係る裏込設備３及び流動化設備４を拡大して示す側面図であり、図７及び図８は、それぞれ図６のＣ−Ｃ矢視図、Ｄ−Ｄ矢視図である。図６〜図８に示すように、裏込設備３は、固化材を貯蔵するための裏込用固化材サイロ３０と、安定材を貯留するための裏込用安定材タンク３１と、水を貯留するための第三の水タンク３２と、固化材と安定材と水と裏込用泥水とを混練するための裏込用ミキサー３３と、混練して作製された裏込材を注入口に供給するための裏込用注入ポンプ３４と、急結材を貯留するための急結材タンク３５と、急結材を注入口に供給するための急結材注入ポンプ３６とを備えている。   FIG. 6 is an enlarged side view showing the back-facing equipment 3 and the fluidization equipment 4 according to the present embodiment, and FIGS. 7 and 8 are respectively a CC arrow view and a DD arrow of FIG. FIG. As shown in FIG. 6 to FIG. 8, the back-facing equipment 3 has a back-solidifying material silo 30 for storing the solidifying material, a back-stabilizing stabilizer tank 31 for storing the stabilizing material, and water. A third water tank 32 for storing, a back mixer 33 for kneading the solidifying material, stabilizing material, water and back mud, and a back material made by kneading are used as the inlet. A backfilling injection pump 34 for supplying, a quick setting material tank 35 for storing the quick setting material, and a quick setting material injection pump 36 for supplying the quick setting material to the injection port are provided.

裏込材を注入する際は、解泥設備２で作製された裏込用泥水がポンプＰ５（図５参照）で裏込用ミキサー３３に送給される。そして、この裏込用ミキサー３３にて裏込用泥水と固化材と安定材と水とが混練されて裏込材が作製され、裏込用注入ポンプ３４で注入口（図示しない）に送給される。注入口に送給された裏込材は、注入口付近で急結材と混合され、テールボイド（図示しない）に注入される。   When injecting the backing material, the backing mud produced in the mud removal equipment 2 is fed to the backing mixer 33 by the pump P5 (see FIG. 5). Then, the backing mud, the solidifying material, the stabilizing material and the water are kneaded by the backing mixer 33 to produce the backing material, and the back filling pump 34 feeds it to the inlet (not shown). Is done. The backing material fed to the inlet is mixed with the quick setting material in the vicinity of the injection port and injected into a tail void (not shown).

流動化設備４は、セメント等の固化材を貯蔵するための流動化用固化材サイロ４０と、安定材を貯留するための流動化用安定材タンク４１と、第三の水タンク３２と、固化材と安定材と水と流動化用泥水とを混練するための流動化用ミキサー４３と、混練して作製された流動化処理土を打設口に供給するための流動化用注入ポンプ４４と、急結材タンク３５と、急結材注入ポンプ３６とを備えている。ここで、第三の水タンク３２、急結材タンク３５、急結材注入ポンプ３６は、裏込設備３と共有して使用される。   The fluidization equipment 4 includes a fluidization solidifying material silo 40 for storing a solidifying material such as cement, a fluidization stabilizing material tank 41 for storing a stabilizing material, a third water tank 32, and a solidification. A fluidizing mixer 43 for kneading the material, stabilizer, water and fluidized mud, and a fluidizing injection pump 44 for supplying fluidized soil prepared by kneading to the placement port; The quick setting material tank 35 and the quick setting material injection pump 36 are provided. Here, the third water tank 32, the quick setting material tank 35, and the quick setting material injection pump 36 are used in common with the back-up facility 3.

流動化処理土をインバート部に打設する際は、解泥設備２で作製された流動化用泥水がポンプＰ６（図５参照）で流動化用ミキサー４３に送給される。そして、この流動化用ミキサー４３にて流動化用泥水と固化材と安定材と水とが混練されて流動化処理土が作製され、流動化用注入ポンプ４４で打設口（図示しない）に送給される。打設口に送給された流動化処理土は、打設口付近で急結材と混合され、インバート部に打設される。   When the fluidized soil is placed in the invert portion, the fluidized mud produced in the demolition facility 2 is fed to the fluidized mixer 43 by the pump P6 (see FIG. 5). Then, the fluidizing mud, the solidifying material, the stabilizing material, and the water are kneaded in the fluidizing mixer 43 to prepare a fluidized soil, and the fluidizing injection pump 44 provides a casting port (not shown). Be sent. The fluidized soil that has been fed to the placement port is mixed with the quick-setting material in the vicinity of the placement port, and is placed in the invert part.

本実施形態においては、流動化設備４の第三の水タンク３２、急結材タンク３５及び急結材注入ポンプ３６を裏込設備３と共用する場合について説明したが、これに限定されるものではなく、裏込設備３と流動化設備４とがこれらの装置をそれぞれ備えてもよい。   In the present embodiment, the case where the third water tank 32, the quick setting material tank 35, and the quick setting material injection pump 36 of the fluidization equipment 4 are shared with the back equipment 3 has been described. However, the present invention is limited to this. Instead, the back-facing equipment 3 and the fluidization equipment 4 may each include these devices.

また、解泥設備２の場合と同様に、図７及び図８に示すように、第二架台５ｂの左側に、裏込設備３を構成する装置類、すなわち、裏込用固化材サイロ３０、裏込用安定材タンク３１、裏込用ミキサー３３、裏込用注入ポンプ３４、急結材タンク３５、急結材注入ポンプ３６を配置した。また、第二架台５ｂの右側には、流動化設備４を構成する装置類、すなわち、流動化用固化材サイロ４０、流動化用安定材タンク４１、第三の水タンク３２、流動化用ミキサー４３、流動化用注入ポンプ４４を配置した。   Further, as in the case of the demolition equipment 2, as shown in FIGS. 7 and 8, on the left side of the second mount 5b, devices constituting the back equipment 3, that is, the back-solidifying material silo 30, A stabilizer tank 31 for backing, a mixer 33 for backing, an injection pump 34 for backing, a quick-setting material tank 35, and a quick-setting material injection pump 36 are arranged. Further, on the right side of the second gantry 5b, devices constituting the fluidization equipment 4, that is, a fluidizing solidified silo 40, a fluidizing stabilizer tank 41, a third water tank 32, a fluidizing mixer. 43, an infusion pump 44 for fluidization was arranged.

主に裏込設備３を構成する装置類を左側にまとめて配置し、主に流動化設備４を構成する装置類を右側にまとめて配置することにより、解泥設備２の場合と同様に、裏込用泥水や流動化用泥水や固化材等を送給するための各配管を短くできるので、裏込設備３及び流動化設備４をトンネル７内の狭いスペースに構築することが可能となる。   As in the case of the demolition equipment 2, the equipment mainly constituting the back-up equipment 3 is arranged on the left side, and the equipment mainly constituting the fluidization equipment 4 is arranged on the right side. Since each pipe for feeding back mud, fluid mud, solidifying material, etc. can be shortened, it becomes possible to construct the back equipment 3 and fluidization equipment 4 in a narrow space in the tunnel 7. .

なお、本実施形態においては、第二架台５ｂの左側に裏込設備３を構成する装置類を、右側に流動化設備４を構成する装置類を配置する場合について説明したが、左右を逆にしてもよい。   In addition, in this embodiment, although the case where the apparatus which comprises the backing equipment 3 was arrange | positioned on the left side of the 2nd mount frame 5b and the apparatus which comprises the fluidization equipment 4 was arrange | positioned on the right side, left and right were reversed. May be.

以上説明した処理設備１によれば、解泥設備２を備えているので、比重の異なる裏込用泥水、流動化用泥水を作製することが可能となる。   According to the processing equipment 1 described above, since the mud removal equipment 2 is provided, it becomes possible to produce back-up mud water and fluidized mud water having different specific gravities.

また、処理設備１は、裏込設備３を備えているので、裏込用泥水と固化材とを混合して裏込材を作製することが可能となる。
さらに、処理設備１は、流動化設備４を備えているので、流動化用泥水と固化材とを混合して流動化処理土を作製することが可能となる。 Moreover, since the processing equipment 1 is provided with the backing equipment 3, it becomes possible to mix the backing mud and the solidifying material to produce the backing material.
Furthermore, since the treatment facility 1 includes the fluidization facility 4, it is possible to mix the fluidized mud and the solidifying material to produce fluidized treated soil.

そして、解泥設備２、裏込設備３及び流動化設備４は、トンネル７内に設けられており、解泥設備２から裏込設備３までの泥水の圧送距離、裏込設備３から裏込材を注入するための注入口までの裏込材の圧送距離、及び流動化設備４から流動化処理土を打設する位置までの圧送距離が短いので、裏込材及び流動化処理土の比重及び粘性の範囲を広くすることができる。したがって、これまでよりも多くの量の掘削土砂をリサイクルすることが可能となる。   The mud removal facility 2, the backfill facility 3, and the fluidization facility 4 are provided in the tunnel 7, and the muddy water pumping distance from the demolition facility 2 to the backfill facility 3 Since the pumping distance of the backing material to the inlet for injecting the material and the pumping distance from the fluidization equipment 4 to the position where the fluidized soil is placed are short, the specific gravity of the backing material and the fluidized soil is And the viscosity range can be widened. Therefore, it becomes possible to recycle a larger amount of excavated sediment than before.

また、処理設備１は、シールド機６の掘進にともなって移動するので、シールド機６本体との取り合い位置関係が変化しない。したがって、切羽から解泥設備２までの距離、解泥設備２から裏込設備３までの距離、解泥設備２から流動化設備４までの距離、裏込設備３から注入口までの距離、流動化設備４から流動化処理土の打設位置までの距離は、常に一定なので、シールド機６の移動にともなう泥水、裏込材、流動化処理土の配管の段取換作業等の手間を省くことが可能となる。   Moreover, since the processing facility 1 moves as the shield machine 6 moves, the positional relationship with the shield machine 6 main body does not change. Therefore, the distance from the working face to the demolition equipment 2, the distance from the demolition equipment 2 to the backfilling equipment 3, the distance from the thawing equipment 2 to the fluidization equipment 4, the distance from the backfilling equipment 3 to the inlet, the flow Since the distance from the liquefaction facility 4 to the placement position of the fluidized soil is always constant, it is possible to save time and labor for changing the muddy water, backing material and fluidized soil piping along with the movement of the shield machine 6. It becomes possible.

そして、処理設備１は、トンネル７内に設置された覆工体１０の内周面を滑って移動するので、従来、実施していたレールの敷設作業を省くことができるとともに、レールからの脱線が無くなり、安全に移動することが可能となる。   And since the processing equipment 1 slides and moves on the inner peripheral surface of the lining body 10 installed in the tunnel 7, it is possible to omit the rail laying work that has been performed conventionally and to derail from the rail. It becomes possible to move safely.

また、処理設備１をトンネル７内に設けることにより、シールド機６の掘進により生じる掘削土砂を裏込材や流動化処理土として利用するので、地上に排出する掘削土砂を少なくすることができる。   In addition, by providing the processing equipment 1 in the tunnel 7, the excavated earth and sand generated by the excavation of the shield machine 6 is used as a backing material and fluidized treated earth, so that the excavated earth and sand discharged to the ground can be reduced.

本発明の実施形態に係る処理設備の側面図である。It is a side view of processing equipment concerning an embodiment of the present invention. 解泥設備を拡大して示す側面図である。It is a side view which expands and shows a demolition equipment. 図２のＡ−Ａ矢視図である。It is an AA arrow line view of FIG. 図２のＢ−Ｂ矢視図である。It is a BB arrow line view of FIG. 本実施形態における解泥設備を用いた解泥の手順を示す図である。It is a figure which shows the procedure of the demolition using the demolition equipment in this embodiment. 本実施形態に係る裏込設備及び流動化設備を拡大して示す側面図である。It is a side view which expands and shows the backing equipment and fluidization equipment which concern on this embodiment. 図６のＣ−Ｃ矢視図である。It is CC arrow line view of FIG. 図６のＤ−Ｄ矢視図である。It is the DD arrow line view of FIG.

符号の説明Explanation of symbols

１ 処理設備
２ 解泥設備
３ 裏込設備
４ 流動化設備
５ａ 第一架台
５ｂ 第二架台
６ シールド機
７ トンネル
８ａ、８ｂ 連結手段
９ 移動手段
９ａ 支持部
９ｂ 滑動部
１０ 覆工体
１１ ベルトコンベア
２０ 解砕機
２１ 一次解泥機
２２ 第一の水タンク
２３ 第一の振動ふるい
２４ 裏込用調整槽
２５ 流動化用調整槽
２６ 二次解泥機
２７ 第二の水タンク
２８ 第二の振動ふるい
２９ａ、２９ｂ 連結管
３０ 裏込用固化材サイロ
３１ 裏込用安定材タンク
３２ 第三の水タンク
３３ 裏込用ミキサー
３４ 裏込用注入ポンプ
３５ 急結材タンク
３６ 急結材注入ポンプ
４０ 流動化用固化材サイロ
４１ 流動化用安定材タンク
４３ 流動化用ミキサー
４４ 流動化用注入ポンプ DESCRIPTION OF SYMBOLS 1 Processing equipment 2 Demolition equipment 3 Backing equipment 4 Fluidization equipment 5a 1st mount 5b 2nd mount 6 Shielding machine 7 Tunnel 8a, 8b Connection means 9 Moving means 9a Supporting part 9b Sliding part 10 Covering body 11 Belt conveyor 20 Pulverizer 21 Primary dehumidifier 22 First water tank 23 First vibrating sieve 24 Backing adjustment tank 25 Fluidization adjusting tank 26 Secondary dehumidifier 27 Second water tank 28 Second vibrating sieve 29a 29b Connecting pipe 30 Backing solidifying material silo 31 Backing stabilizing material tank 32 Third water tank 33 Backing mixer 34 Backing injection pump 35 Quick setting material tank 36 Quick setting material injection pump 40 For fluidization Solidifying material silo 41 Fluidizing stabilizer tank 43 Fluidizing mixer 44 Fluidizing injection pump

Claims (6)

シールド機の掘進により生じる掘削土砂を処理するための処理設備であって、
前記掘削土砂を解泥して泥水を作製する解泥設備と、
前記泥水のうち所定の粒径以上の未溶解固形分を除去した所定の比重の泥水とセメント等の固化材とを混合して裏込材を作製する裏込設備と、
前記除去した未溶解固形分を含む泥水と、前記固化材とを混合して流動化処理土を作製する流動化設備と、
を前記シールド機の掘進により構築されるトンネル内に備えることを特徴とする処理設備。 A processing facility for processing excavated earth and sand generated by a shield machine,
And Kaidoro facilities for making mud water and Kaidoro the excavating soil,
Backing equipment for producing a backing material by mixing muddy water with a specific gravity from which undissolved solid content of a predetermined particle size or more is removed from the muddy water and a solidifying material such as cement ,
Fluidization equipment for producing fluidized soil by mixing the muddy water containing the removed undissolved solids and the solidified material,
In a tunnel constructed by excavation of the shield machine. 前記裏込設備及び前記流動化設備は、切羽に向かって左右に振り分けて配置されていることを特徴とする請求項１に記載の処理設備。 The processing equipment according to claim 1 , wherein the back-facing equipment and the fluidization equipment are arranged in a left-right direction toward the face. 前記未溶解固形分を除去した泥水を貯蔵する裏込用調整槽と、
前記除去した未溶解固形分を含む泥水を貯蔵する流動化用調整槽と、
前記裏込用調整槽に貯蔵された泥水の比重が第１の所定値より小さい場合に、前記流動化用調整槽に貯蔵された泥水を前記裏込用調整槽に供給し、前記流動化用調整槽に貯蔵された泥水の比重が、前記第１の所定値よりも大きい第２の所定値よりも大きい場合に、前記裏込用調整槽に貯蔵された泥水を前記流動化用調整槽に供給する手段と、
を備えることを特徴とする請求項２に記載の処理設備。 A back-up adjustment tank for storing the muddy water from which the undissolved solids have been removed;
A fluidized adjustment tank for storing mud containing the removed undissolved solids;
When the specific gravity of the muddy water stored in the adjustment tank for backfilling is smaller than a first predetermined value, the muddy water stored in the adjustment tank for fluidization is supplied to the adjustment tank for backfilling, and When the specific gravity of the muddy water stored in the adjustment tank is larger than a second predetermined value that is larger than the first predetermined value, the muddy water stored in the adjustment tank for backfilling is supplied to the fluidization adjustment tank. Means for supplying;
The processing equipment according to claim 2, further comprising: シールド機の掘進により生じる掘削土砂の処理方法において、
前記シールド機の掘進により構築されるトンネル内で、前記掘削土砂を解泥し、所定の粒径以上の未溶解固形分を除去して所定の比重の泥水を作製し、前記泥水とセメント等の固化材とを混合して裏込材を作製し、
前記トンネル内で、前記除去した未溶解固形分を含む泥水とセメント等の固化材とを混合して流動化処理土を作製することを特徴とする掘削土砂の処理方法。 In the processing method of excavated soil generated by the excavation of the shield machine,
In the tunnel constructed by the excavation of the shield machine, the excavated earth and sand are mud , undissolved solids having a predetermined particle size or more are removed to prepare mud water of a predetermined specific gravity, the mud water and cement, etc. Mix the solidified material to make the backing material ,
A method for treating excavated soil, wherein fluidized soil is prepared by mixing mud containing the removed undissolved solids and a solidifying material such as cement in the tunnel . 前記裏込材を作製する裏込設備及び前記流動化処理土を作製する流動化設備を設け、該裏込設備及び該流動化設備を切羽に向かって左右に振り分けて配置することを特徴とする請求項４に記載の掘削土砂の処理方法。 Fluidization equipment for making Urakomi equipment and the fluidizing treated soil to produce the Urakomi material provided, characterized in that the backing write equipment and the fluidized amenities distributively arranged on the right and left toward the working face The processing method of excavation earth and sand according to claim 4 . 前記未溶解固形分を除去した泥水を貯蔵する裏込用調整槽と、前記除去した未溶解固形分を含む泥水を貯蔵する流動化用調整槽と、を設け、
前記裏込用調整槽に貯蔵された泥水の比重が第１の所定値より小さい場合に、前記流動化用調整槽に貯蔵された泥水を前記裏込用調整槽に供給し、前記流動化用調整槽に貯蔵された泥水の比重が、前記第１の所定値よりも大きい第２の所定値よりも大きい場合に、前記裏込用調整槽に貯蔵された泥水を前記流動化用調整槽に供給することを特徴とする請求項５に記載の掘削土砂の処理方法。 A back-up adjustment tank for storing the muddy water from which the undissolved solid content has been removed, and a fluidization adjustment tank for storing the muddy water containing the removed undissolved solid content, and
When the specific gravity of the muddy water stored in the adjustment tank for backfilling is smaller than a first predetermined value, the muddy water stored in the adjustment tank for fluidization is supplied to the adjustment tank for backfilling, and When the specific gravity of the muddy water stored in the adjustment tank is larger than a second predetermined value that is larger than the first predetermined value, the muddy water stored in the adjustment tank for backfilling is supplied to the fluidization adjustment tank. The method for treating excavated sediment according to claim 5, wherein the excavated sediment is supplied .
JP2007161793A 2007-06-19 2007-06-19 Processing equipment, processing method of excavated sediment Expired - Fee Related JP5010998B2 (en)

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