JP2015054275A - Waste disposal method in waste disposal site - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refuse disposal method that a non-discharge excavation hole (compaction hole) is formed by compacting excavated refuse to a hole wall and surface refuse and carried refuse are thrown into the compaction hole in a waste disposal site and by which refuse disposal can be performed even in the disposal site in a landfill site and the like where the compaction hole cannot be kept.SOLUTION: An excavation body 1 connected with an excavation part 11 having an opening and closing puncture part 115 at the tip part of a casing 12a is used and a compaction hole A is formed by an excavation device 2 having an excavation mechanism 21 achieving rotational excavation while clutching the casing. Refuse C is thrown from the upper opening of the casing in a state where the excavation body 1 is buried, the excavation body (excavation part and the casing) is sequentially pulled out by opening the opening and closing puncture part 115 and then backfill filling an excavation hole with the refuse is performed.

Description

本発明は、埋め立て地等の軟弱地盤や地下水が生ずる悪条件の廃棄物処分場において廃棄物の減容（廃棄空間の拡大）や埋設廃棄を実現する廃棄物処理工法及び前記廃棄物処理工法に使用する掘削体に関するものである。   The present invention relates to a waste disposal method that realizes volume reduction (expansion of disposal space) and buried disposal in a poorly disposed waste disposal site that generates soft ground such as landfill or groundwater, and the waste disposal method. The present invention relates to an excavation body to be used.

一般廃棄物や産業廃棄物等のうち再利用されない廃棄物は、廃棄物処分場に投棄しているもので、投棄は単に従前の廃棄物の上になされ、廃棄物が順次積層されていくものである。放置しておくと自重による自然の圧縮以外に減容がなされない。このため処分場が満杯になると別の処分場を探さなければならない。   Waste that is not reused, such as general waste and industrial waste, is dumped in the waste disposal site, and dumping is simply performed on the previous waste, and the waste is sequentially stacked. It is. If left unattended, there is no reduction in volume other than natural compression by its own weight. For this reason, when the disposal site is full, another disposal site must be found.

そこで廃棄物処分場において、外周にコテ部を備えた掘削土砂圧密形のオーガ（掘削体）を使用して、無排出で掘削穿孔して圧密孔を形成し、前記圧密孔によって新たに廃棄物廃棄空間を形成し、当該空間に廃棄物を廃棄充填する廃棄物処理工法が知られている。   Therefore, in a waste disposal site, a drilled earth and sand compacted auger (excavated body) with a trowel on the outer periphery is used to form a consolidated hole by excavating and drilling without discharge. 2. Description of the Related Art There is known a waste processing method that forms a waste space and discards and fills the space with waste.

例えば特許文献１（特開平１０−２７２４３２号公報）には、圧密孔を形成した後に掘削体を孔内に差し入れた状態で逆回転をさせて引き抜きながら、孔口から廃棄物を投入し、孔底へと落下させながらコテ部（圧密板）で孔壁に圧密させ、更に残りを孔底に順次堆積させる手段が開示されている。   For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 10-272432), after forming a consolidation hole, waste is thrown in from the hole opening while the excavation body is inserted into the hole and rotated backward and pulled out. A means is disclosed in which a hole portion (consolidation plate) is pressed against a hole wall while dropping to the bottom, and the remainder is sequentially deposited on the hole bottom.

特許文献２（特開２００１−２８６８４３号公報）には、圧密コテ（圧密板）を周面に設けたケーシングと、このケーシング内を通し且つ先端から突出する掘削ヘッドを有する掘削ロッドとからなる掘削体を使用し、ケーシングの圧密コテで無排出掘削を行い、ケーシングを残した状態でケーシング内に表層廃棄物を投入し、後にケーシングを引き抜く廃棄物処理工法が開示されている。   Patent Document 2 (Japanese Patent Laid-Open No. 2001-286843) discloses a excavation comprising a casing provided with a consolidation trowel (consolidation plate) on the peripheral surface and a drill rod having a drill head passing through the casing and protruding from the tip. A waste processing method is disclosed in which a body is used, non-discharge excavation is performed with a compacting trowel of the casing, surface layer waste is put into the casing with the casing remaining, and the casing is later pulled out.

特許文献３（特開２００６−１５２６２号公報）には、無排出圧密孔を形成しオーガを引き抜いた後に、圧密孔に外周面が平滑なケーシングを立て込み、ケーシング内に廃棄物を投入充填しながら若しくは充填後にケーシングの引き抜きを行う処理工法が開示されている。   In Patent Document 3 (Japanese Patent Application Laid-Open No. 2006-15262), after forming an exhaustless compaction hole and pulling out the auger, a casing having a smooth outer peripheral surface is set up in the compaction hole, and waste is charged into the casing. However, a processing method is disclosed in which the casing is pulled out after filling.

更に特許文献４（特開２００８−３０２２７３号公報）には、圧密コテ部を周設した筒状本体の先端に、逆円錐台形状の掘削部を設けた掘削ヘッドと、前記掘削ヘッドと連続連結したケーシングとで圧密孔を形成保持し、掘削部材を引き抜いた後に圧密孔に廃棄物を投入する廃棄物処理工法が開示されている。   Further, Patent Document 4 (Japanese Patent Application Laid-Open No. 2008-302273) discloses a drilling head in which an inverted frustoconical drilling part is provided at the tip of a cylindrical body provided with a consolidation iron part, and a continuous connection with the drilling head. A waste treatment method is disclosed in which a compact hole is formed and held with the casing and the excavation member is pulled out, and then waste is put into the compact hole.

特開平１０−２７２４３２号公報。Japanese Patent Laid-Open No. 10-272432. 特開２００１−２８６８４３号公報。JP 2001-286843 A. 特開２００６−１５２６２号公報。JP 2006-15262 A. 特開２００８−３０２２７３号公報。JP 2008-302273 A.

廃棄物処理場の地盤状況にあっては、前記した圧密孔を形成した際に、圧密孔に直ぐに地下水が侵入する場合がある。特に埋立地の廃棄物処理場では、埋め立てに際して浚渫土砂や建築廃材や焼却灰等の廃棄物で行われていたために、地盤自体が緻密ではなく堆積廃棄物が海水面下まで達している場合は、前記の圧密孔を掘削形成しても、直ぐに海水が浸透してきて圧密孔が崩壊してしまう。   In the ground situation of the waste disposal site, when the above-described consolidation hole is formed, there is a case where groundwater enters the consolidation hole immediately. Especially in landfill waste disposal sites, when the landfill was done with waste such as dredged soil, building waste and incineration ash, the ground itself was not dense and the accumulated waste reached below sea level. Even if the above-mentioned consolidation hole is formed by excavation, seawater immediately permeates and the consolidation hole collapses.

前記の状況下で特許文献１記載の工法を採用したとしても、ケーシングで圧密孔の孔壁を保持するものではないので、廃棄物投入作業時に圧密孔の孔壁が崩壊してしまう虞がある。しかも掘削体の先端ビットで態々堆積廃棄物を粉砕して圧密孔を形成する無駄があり、また掘削した圧密孔内に掘削体（オーガ軸）が存在する状態で、掘削孔への廃棄物の投入を行うため、孔底への通過断面が狭く廃棄物投入が効率的に行われない等、その作業効率の点に問題がある。   Even if the construction method described in Patent Document 1 is adopted under the above circumstances, the hole wall of the consolidation hole is not retained by the casing, and therefore there is a possibility that the hole wall of the consolidation hole may collapse during the waste charging operation. . Moreover, there is a waste of pulverizing the accumulated waste with the tip bit of the excavated body to form a consolidated hole, and in the state where the excavated body (auger shaft) exists in the excavated consolidated hole, There is a problem in terms of work efficiency, for example, because the cross-section to the bottom of the hole is narrow and waste input is not efficiently performed.

また地下水問題がある廃棄物処理場では、前記特許文献３記載の工法のように圧密孔形成後にケーシングを圧密孔に投入設置する手段では、ケーシングの設置前に圧密孔が崩壊してしまう虞があり、特許文献４記載の工法のように、掘削体を引き抜いて圧密孔自体の形状保持を前提とする手法では圧密孔の崩壊によって成立しない。   Further, in a waste disposal site where there is a groundwater problem, there is a possibility that the consolidation hole may collapse before the casing is installed by means of introducing the casing into the consolidation hole after forming the consolidation hole as in the construction method described in Patent Document 3. In addition, as in the construction method described in Patent Document 4, the method based on the assumption that the excavated body is pulled out and the shape of the consolidated hole itself is maintained cannot be established due to the collapse of the consolidated hole.

更に特許文献２記載の廃棄物処理工法のように、ケーシングを残したまま廃棄物投入を行う手段は、地下水問題には対応できるが、掘削体をケーシングと、掘削ロッド及び掘削ロッドからなる掘削部の二重構造が必要となり、而も回転駆動装置も掘削圧密時の掘削ロッド駆動機構とケーシング引抜時のケーシング駆動機構が必要となり、装置全体が複雑になってしまう。   Further, as in the waste treatment method described in Patent Document 2, the means for throwing in waste while leaving the casing can cope with the groundwater problem, but the excavating body is a excavation section comprising a casing, a excavation rod and an excavation rod. Therefore, the rotary drive device also requires a drill rod driving mechanism at the time of excavation compaction and a casing drive mechanism at the time of pulling out the casing, which complicates the entire apparatus.

そこで、地下水問題に対応できる新規な掘削体及び前記掘削体を使用する廃棄物処理工法を、特願２０１３−８２９５２号として提案したもので、本発明は、前記の基本的工法に加え、確実な実施を目指した工法を提案したものである。   Therefore, a novel excavation body capable of coping with the groundwater problem and a waste treatment method using the excavation body were proposed as Japanese Patent Application No. 2013-82952, and the present invention is reliable in addition to the basic construction method described above. This is a method proposed for implementation.

本発明方法に使用する装置は、所定の掘削体を備えた掘削装置と、スクリュー羽根を備えた回転充填体（掘削ヘッドを備えていないオーガ形状の部材）及び前記回転充填体の回転駆動装置と、前記両者の吊下げ装置（クレーン）で、特に掘削体は、所定のケーシングの先部に、回転方向に対応して外周方向に張り出し、回転方向終端側が掘削孔と対応する径とした圧密板を複数備え、下方開口部に、閉口時に逆円錐形状となり、且つ上方部分をヒンジ連結して嘴状に開閉可能とした開閉刺突部を設けた掘削部を連結したもので、掘削装置は、前記掘削体のケーシングを抱持して回転し、掘削体の掘進或いは引抜を行うものである。   The apparatus used in the method of the present invention includes an excavator provided with a predetermined excavator, a rotary filler provided with screw blades (an auger-shaped member not provided with an excavator head), and a rotary drive device for the rotary filler. In the above-described suspension device (crane), in particular, the excavated body protrudes from the end of a predetermined casing in the outer peripheral direction corresponding to the rotational direction, and the diameter of the end in the rotational direction corresponds to the excavation hole. And a drilling part provided with an opening and closing piercing part that is formed in an inverted conical shape when closed and that can be opened and closed like a hook by opening the upper part to the lower opening. The excavator body is held and rotated, and the excavator body is advanced or pulled out.

本発明（請求項１）に係る廃棄物処分場における廃棄物処理工法は、廃棄物処分場において、ケーシングを抱持して掘削装置を動作させて、所望の深さの掘削孔を形成する掘削工と、前記掘削工の後に、ケーシング上部開口箇所から廃棄物を投入すると共に、適宜スクリュー羽根を備えた回転充填体を掘削体内に垂下配置して、投入廃棄物に対して下方への充填圧を加え、ケーシングを順時上方に引き抜いて開口した開閉刺突部からケーシング内廃棄物を掘削孔内に残存させて、掘削孔に廃棄物を満たす埋戻し工とを、掘削位置を変更して順次繰り返してなることを特徴とするものである。   The waste disposal method in the waste disposal site according to the present invention (Claim 1) is an excavation in which a drilling hole having a desired depth is formed by holding a casing and operating a drilling device in the waste disposal site. After the excavator and the excavator, the waste is introduced from the opening at the upper part of the casing, and a rotary filler equipped with screw blades is appropriately placed in the excavated body so as to lower the filling pressure downward with respect to the input waste. The waste in the casing is left in the excavation hole from the opening and closing piercing part that is opened by sequentially pulling the casing upward and the excavation position is changed. It is characterized by being sequentially repeated.

而して廃棄物処分場で掘削体を使用して圧密孔を形成し、掘削体をそのままにして廃棄物投入を行うものであるから、地下水（海水も含む）を含む層に達する深さまで圧密孔を形成しても、圧密孔の孔壁崩壊の虞が無い状態で廃棄物の投入が可能となり、また必要時に回転充填体を掘削体内に垂下配置し、回転充填体を回転作動させることで、投入廃棄物を掘削体内の下方に圧送し、投入廃棄物を填圧してその密度を高め、ケーシングを順時上方に引き抜いて開口した開閉刺突部からケーシング内の投入廃棄物を掘削孔内に残存させることで、廃棄処分場の減容を実現するものである。   Thus, the excavated body is used to form a consolidation hole at the waste disposal site, and waste is input while leaving the excavated body as it is, so the consolidation is performed to a depth that reaches the layer containing groundwater (including seawater). Even if a hole is formed, waste can be thrown in without the possibility of collapse of the hole wall of the consolidation hole, and when necessary, the rotary filler is suspended in the excavated body and the rotary filler is rotated. The input waste is pumped downward in the excavation body, the input waste is filled to increase its density, and the input waste in the casing is pushed into the excavation hole through the opening and closing piercing part that is pulled out upward. The volume of the waste disposal site can be reduced.

本発明（請求項２）に係る廃棄物処分場における廃棄物処理工法は、特に前記工法において、埋戻し工の当初に、回転充填体を掘削体の底方に垂下配置し、投入廃棄物に対して下方への充填圧を加えると共に、適宜掘削体を僅かに上方に引き抜いて開閉刺突部を完全に開口させる開口埋戻し工を行ってなるものである。   The waste disposal method in the waste disposal site according to the present invention (Claim 2) is the waste disposal method in particular, in the construction method described above, at the beginning of the backfilling work, the rotary packing body is suspended from the bottom of the excavation body, On the other hand, a filling pressure is applied downward, and an opening backfilling is performed in which the excavated body is pulled out slightly upward and the opening and closing piercing portion is completely opened.

掘削部の開閉刺突部は、掘削中は掘削対向圧力を受けて開口する虞は無いが、仮に僅かでも開口すると、圧密掘削対象の廃棄物がケーシング内に侵入し、更には開口して圧密孔を形成できない場合も想定される。そこで開口刺突部の閉口状態を維持する適宜な留め具を設けて（例えば開閉刺突部の外側を細い番線で連繋しておく）、前記留め具で開口刺突部の開口を阻止して掘削する場合がある。また掘削工終了時に、掘削部先端部分に対して強い土圧（開閉刺突部の開口抵抗力）が加わっている場合もある。前記状態で投入廃棄物の自重と掘削体の上方移動で開閉刺突部が開口しない虞もあるが、廃棄物の投入と共に回転充填体を掘削孔底方に配置して、投入廃棄物を下方に圧送して、投入廃棄物で開閉刺突部側に押し付けて、掘削体を僅かに上方に引き抜くと、投入廃棄物が回転充填体で上方移動が阻止されると共に強く下圧されているので、開閉刺突部には強い開口圧力が加わり、細い番線の留め具は切断され、開閉刺突部は確実に開放状態となる。   The open / close pier of the excavation part is not likely to open due to the counter pressure during excavation, but if even a slight opening occurs, the waste to be compacted will enter the casing and further open to consolidate. A case where holes cannot be formed is also assumed. Therefore, an appropriate fastener for maintaining the closed state of the opening piercing portion is provided (for example, the outside of the opening and closing piercing portion is connected by a thin wire), and the opening of the opening piercing portion is blocked by the fastener. May excavate. Further, at the end of the excavation work, there may be a case where a strong earth pressure (opening resistance force of the opening / closing piercing portion) is applied to the tip portion of the excavation part. In the above state, there is a possibility that the opening / closing piercing portion will not open due to the weight of the input waste and the upward movement of the excavation body, but when the waste is input, the rotating filler is placed at the bottom of the excavation hole and the input waste is moved downward. If the excavated body is pulled out slightly upward by pushing it against the open / close pier with the input waste, the input waste is prevented from moving upward by the rotating filler and is strongly under pressure. A strong opening pressure is applied to the opening / closing piercing portion, the thin wire-line fastener is cut, and the opening / closing piercing portion is reliably opened.

また本発明（請求項３）は、特に前記掘削部の外周面における各圧密板の形成位置より下方に、螺旋間欠状に配置した攪拌羽根を設けた掘削体を使用し、掘削時に孔壁面構成物を攪拌圧密して無排出掘削孔を形成してなるもので、無排出圧密孔の構築を速やかに行うことができたものである。   In addition, the present invention (Claim 3) uses a drilling body provided with stirring blades arranged in a spiral intermittent manner below the formation position of each compaction plate on the outer peripheral surface of the excavation part. The object is formed by stirring and compacting to form a discharge-free excavation hole, and the discharge-free consolidation hole can be quickly constructed.

本発明は上記のとおりで、圧密孔を掘削して圧密孔に廃棄物投入を行うに際して、埋め立て地等の地下水層や海面下に達する悪条件の廃棄処分場でも、圧密孔を維持した状態での廃棄物投入が可能となったもので、廃棄物減容処理は勿論のこと、埋め立て地等への直接の廃棄物埋設処理をも実現したものである。   The present invention is as described above, and when the consolidation hole is excavated and waste is put into the consolidation hole, the consolidation hole is maintained even in a groundwater layer such as a landfill or a waste disposal site that reaches under the sea level. In addition to waste volume reduction processing, direct waste burying processing in landfills and the like has also been realized.

本発明工法に使用する掘削体の実施形態の正面図。The front view of embodiment of the excavation body used for this invention construction method. 本発明工法に使用する回転充填体及び回転駆動装置の実施形態の説明図。Explanatory drawing of embodiment of the rotation filling body and rotation drive device which are used for this invention construction method. 本発明工法の実施状況の説明図（掘削工）。Explanatory drawing (excavator) of the implementation condition of this invention construction method. 同図（開口埋戻し工）。The figure (opening backfilling). 同図（埋戻し工）。The figure (backfilling). 同図（終了時）。The figure (at the end). 同図（連続施工）。The figure (continuous construction).

次に本発明工法の実施の形態について説明する。本発明の実施装置は、掘削体１と、掘削装置２と、バックホー３と、クレーン装置４と、回転充填体５と回転充填体５の回転駆動装置６で構成される。   Next, an embodiment of the method of the present invention will be described. The implementation apparatus of the present invention includes an excavation body 1, an excavation apparatus 2, a backhoe 3, a crane apparatus 4, a rotary filler 5, and a rotary drive device 6 for the rotary filler 5.

実施形態として示した掘削体１は、掘削部１１と、２個のケーシング１２ａ，１２ｂで構成している。   The excavation body 1 shown as an embodiment is constituted by an excavation part 11 and two casings 12a and 12b.

掘削部１１は、筒状本体１１１の上端縁にケーシング接続部１１２を設け、外周面に攪拌羽根１１３と圧密板１１４を設け、下端部分に開閉刺突部１１５を設けたものである。   The excavation part 11 is provided with a casing connection part 112 at the upper end edge of the cylindrical main body 111, an agitation blade 113 and a compaction plate 114 on the outer peripheral surface, and an opening / closing piercing part 115 at the lower end part.

攪拌羽根１１３は、掘削孔（圧密孔）Ａと対応する外径で、螺旋状で且つ間欠的に設けたものである。圧密板１１４は、攪拌羽根１１３の上方に回転方向終端側が掘削孔Ａと対応する径で、且つ回転方向に対応して順次上方に設け、上下位置でその一部が重なるように複数周設したものであり、開閉刺突部１１５は、筒状本体１１１の下方開口部に設けたもので、各々上方部分をヒンジ連結して嘴状に開閉可能とした複数枚で構成され、閉口時に逆円錐形状となるものである。尚図示していないが、開閉刺突部１１５の内面には、開閉刺突部１１５の開口を阻止する留め具、例えば細い番線で開閉刺突部１１５の外側を連繋しておくものである。   The stirring blade 113 has an outer diameter corresponding to the excavation hole (consolidation hole) A and is provided spirally and intermittently. The compaction plate 114 is provided above the agitating blade 113 in a plurality of circumferences so that the end of the rotation direction has a diameter corresponding to the excavation hole A and sequentially above the rotation direction, and a part thereof overlaps at the vertical position. The opening / closing piercing portion 115 is provided in the lower opening of the cylindrical main body 111, and is composed of a plurality of pieces that can be opened and closed in a hook shape by connecting the upper portions to each other. It becomes a shape. Although not shown, the outside of the opening / closing piercing portion 115 is connected to the inner surface of the opening / closing piercing portion 115 by a fastener that prevents the opening of the opening / closing piercing portion 115, for example, a thin wire.

ケーシング１２ａ，１２ｂは、筒状本体１１１と同一径で、上下端縁に前記掘削部１１及び他のケーシング１２ａ，１２ｂと互いに連続して接続する連結部１２１を設けてなるものである。   The casings 12a and 12b have the same diameter as the cylindrical main body 111, and are provided with connecting parts 121 connected to the excavation part 11 and the other casings 12a and 12b continuously at the upper and lower ends.

掘削装置２は、全回転型オールケーシング掘削機と称される既存の装置で、前記ケーシング１２ａ，１２ｂを抱持して回転掘削する掘進機構２１を備えたものである。またバックホー３と、クレーン装置４は、周知の既存機器を使用する。   The excavator 2 is an existing device called a full-rotation type all-casing excavator, and includes an excavating mechanism 21 that holds the casings 12a and 12b and performs rotary excavation. The backhoe 3 and the crane apparatus 4 use well-known existing equipment.

回転充填体５及び回転充填体５の回転駆動装置６は、連結シャフト５１で連結されてクレーン装置４に吊下げて使用されるもので、回転駆動装置６は回転駆動部を内装し、吊下げ掛け止部６１を設けると共に、捻じれ防止用腕部６２を横方へ突設してなり、連結シャフト５１を下方に接続してなるものである。   The rotary filler 5 and the rotary drive device 6 of the rotary filler 5 are connected by a connecting shaft 51 and suspended from the crane device 4. The rotary drive device 6 includes a rotary drive unit and is suspended. The latching portion 61 is provided, and the twist preventing arm portion 62 is protruded laterally, and the connecting shaft 51 is connected downward.

回転充填体５は、一般の掘削オーガにおいて掘削ヘッドを取り除いた形状のもので、シャフト部５２にスクュー羽根５３を備えたものである。   The rotary filler 5 has a shape obtained by removing the excavation head from a general excavation auger, and includes a shaft blade 52 and a squeeze blade 53.

次に前記実施装置を使用して本発明工法（施工作業）の実施について説明する。実施形態は、集積廃棄物Ｂが存在する処分場を例にしたが、埋め立て地のように直接廃棄物を埋設する場合にも本発明工法は適用されるもので、その場合、掘削対象は軟弱地盤となる。   Next, implementation of the present invention construction method (construction work) will be described using the above-described implementation apparatus. In the embodiment, the disposal site where the accumulated waste B exists is taken as an example. However, the present construction method is also applied to the case where the waste is buried directly like a landfill, in which case the excavation target is soft. It becomes the ground.

本発明工法の施工は、掘削工と、開口埋戻し工を含む埋戻し工を実施するもので、掘削工は、図３に示すように掘削部１１とケーシング１２ａを連結した掘削体１を掘削装置２の掘進機構２１に装着し、掘削孔の掘穿予定位置において掘削を開始する。   The construction method of the present invention involves excavation and backfilling including opening backfilling. The excavator excavates the excavated body 1 in which the excavation part 11 and the casing 12a are connected as shown in FIG. The excavation mechanism 21 of the apparatus 2 is attached to the excavation mechanism 21 and excavation is started at a planned excavation position of the excavation hole.

掘削は掘進機構２１で、掘削体１を回転させながら押し込むもので、掘削部１１の開閉刺突部１１５が閉口の逆円錐形の状態で集積廃棄物（又は軟弱地盤）Ｂに喰い込み、更に攪拌羽根１１３の作用で集積廃棄物Ｂ内に捻り込みながら集積廃棄物Ｂを攪拌して押し上げて掘進する。この掘進によって圧密板１１４で連続的に孔壁が押圧されて圧密状態となる。   The excavation is carried out by the excavation mechanism 21 while the excavation body 1 is rotated, and the open / close piercing portion 115 of the excavation part 11 bites into the accumulated waste (or soft ground) B in the closed conical state, and further The accumulated waste B is agitated and pushed up while being twisted into the accumulated waste B by the action of the stirring blade 113 to dig. By this excavation, the hole wall is continuously pressed by the compaction plate 114 to be in a compacted state.

特にケーシング１２ａ，１２ｂは筒状本体１１１と同径であるので、圧密孔Ａの孔壁との間に空隙が生し、掘削体１の掘進がスムーズに行われると共に、ケーシング１２ａによって圧密孔Ａの孔壁が多少崩壊しても掘削孔が維持されることになる。   In particular, since the casings 12a and 12b have the same diameter as the cylindrical main body 111, a gap is formed between the hole wall of the consolidation hole A, the excavation body 1 is smoothly advanced, and the consolidation hole A is formed by the casing 12a. Even if the hole wall of the hole collapses somewhat, the drilling hole is maintained.

掘削がある程度進行すると、ケーシング１２ａに次段のケーシング１２ｂをクレーン装置４で吊り上げて連結し、更に所定の深さまで掘削を行ない、掘削工を終了する（図３）。   When excavation progresses to some extent, the casing 12b of the next stage is lifted and connected to the casing 12a by the crane device 4, and further excavation is performed to a predetermined depth, and the excavation work is completed (FIG. 3).

前記掘削工が終了すると、埋戻し工を実施するものであるが、埋戻し工の最初には、開口埋戻し工を実施する。開口埋戻し工は、図４に示すように、回転充填体５を連結シャフト５１で連結した回転駆動装置６を、クレーン装置４に吊下げる。特に回転駆動装置６はその自転を阻止するように、クレーン装置４からのワイヤー６３を捻じれ防止用腕部６２に結んで、更に前記ワイヤー６３を緊張して地表又は地表近くの機材をアンカーとして固定する。   When the excavation is completed, a backfilling operation is performed. At the beginning of the backfilling operation, an opening backfilling operation is performed. As shown in FIG. 4, the opening backfilling hangs the rotary drive device 6 in which the rotary filler 5 is connected by the connecting shaft 51 to the crane device 4. In particular, the rotation drive device 6 connects the wire 63 from the crane device 4 to the torsion preventing arm 62 so as to prevent its rotation, and further tensions the wire 63 to use the equipment near or on the ground surface as an anchor. Fix it.

そして回転充填体５を懸垂状態でケーシング１２ａ，１２ｂを通過させて先端を掘削部１１の底面まで到達させる。同時に廃棄物Ｃを掘削体１内に投入する。勿論掘削進行のために掘削体１の自重を増加させる目的で予め廃棄物Ｃを掘削体１内に投入しておいても良い。   Then, the rotary packing 5 is passed through the casings 12 a and 12 b in a suspended state so that the tip reaches the bottom surface of the excavation part 11. At the same time, the waste C is put into the excavated body 1. Of course, the waste C may be put into the excavation body 1 in advance for the purpose of increasing the weight of the excavation body 1 for the progress of excavation.

掘削体１の底方に投入廃棄物Ｄが存在する状態で、回転充填体５を充填回転（掘削逆回転）させると、投入された廃棄物Ｄは、掘削体１の内底方へ押し込められる。そして同時に掘削体１を僅かに上方に引き抜くと、投入廃棄物Ｄが回転充填体５で上方移動が阻止されると共に強く下圧されているので、開閉刺突部１１５には強い開口圧力が加わる。この結果、細い番線の留め具は切断され、開閉刺突部１１５は確実に開放状態となる。   When the rotary packing 5 is filled and rotated (excavation reverse rotation) in the state where the input waste D exists at the bottom of the excavated body 1, the input waste D is pushed toward the inner bottom of the excavated body 1. . At the same time, when the excavated body 1 is slightly pulled upward, the input waste D is prevented from moving upward by the rotary filler 5 and is strongly pressed down, so that a strong opening pressure is applied to the opening / closing piercing portion 115. . As a result, the thin wire-line fastener is cut, and the open / close piercing portion 115 is reliably opened.

前記の開口埋戻し工を終了すると、回転充填体５及び回転駆動装置６を掘削体１内から引き抜いて、或いはそのままで、ケーシング１２ｂの上部開口箇所から、処分場への搬入廃棄物や処分場の表層廃棄物をかき集めた廃棄物Ｃを、バックホー３等を使用して投入する。その際に掘削体１内に残した回転充填体５を作動させたり、クレーン装置４で吊下げたウエイトで投入廃棄物Ｄを填圧すると、より大量の廃棄物Ｃの投入が可能となる。   When the opening backfilling process is completed, the rotary filling body 5 and the rotation driving device 6 are pulled out from the excavation body 1 or are left as they are, and the waste brought into the disposal site or the disposal site from the upper opening portion of the casing 12b. The waste C obtained by collecting the surface layer waste is introduced using the backhoe 3 or the like. At that time, if the rotary filling body 5 left in the excavation body 1 is operated or the input waste D is filled with the weight suspended by the crane device 4, a larger amount of the waste C can be input.

ある程度の廃棄物Ｃを投入すると、掘削体１の開閉刺突部１１５を開口状態のまま、掘進機構２１を逆転させて掘削体１を上方に移動させると、投入廃棄物Ｄは、そのまま圧密孔Ａに残存することになる。   When a certain amount of waste C is thrown in, when the excavating body 21 is moved upward by reversing the excavating mechanism 21 while the open / close piercing portion 115 of the excavating body 1 is in an open state, the thrown waste D remains in the consolidation hole. A will remain.

掘削体１の上昇でケーシング１２ｂが露出すると、ケーシング１２ｂの連結を解除してクレーン装置４で吊り下げて取外し、再度ケーシング１２ａの上方開口部から廃棄物Ｃを投入する（図５）。圧密孔Ａを投入廃棄物Ｄで満たすと、掘削体１を全て引抜き、埋戻し工を終了する（図６）。   When the casing 12b is exposed as the excavated body 1 is raised, the connection of the casing 12b is released, the casing 12b is suspended and removed by the crane device 4, and the waste C is thrown again from the upper opening of the casing 12a (FIG. 5). When the consolidation hole A is filled with the input waste D, the entire excavated body 1 is pulled out and the backfilling operation is completed (FIG. 6).

前記の掘削工及び埋戻し工を終了すると、次の掘削予定位置に移動して、次の掘削工、埋戻し工を順時実施し、これを繰り返すことで一杯となっている廃棄物処分場で更に大量の廃棄物を廃棄することができるものである（図７）。   After completing the excavation and backfilling, move to the next planned excavation position, carry out the next excavation and backfilling in order, and repeat this to complete the waste disposal site In this way, a larger amount of waste can be discarded (FIG. 7).

特に本発明は、形成した圧密孔Ａを掘削体１で保護した状態のまま圧密孔Ａ内への廃棄物投入を行うものであるから、圧密孔が崩壊しやすい埋め立て地等に設けた廃棄物処分場でも、何ら支障なく廃棄物減容処理が可能となったものであり、また近接地に連続して圧密孔Ａへの廃棄物投入減容処理が可能で作業効率も高められたものである。   In particular, according to the present invention, waste is provided in the consolidation hole A while the formed consolidation hole A is protected by the excavating body 1, so that the waste provided in a landfill or the like where the consolidation hole is likely to collapse. Even at the disposal site, it is possible to reduce the volume of waste without any problem, and it is possible to reduce the volume of waste into the compaction hole A continuously in the vicinity, improving work efficiency. is there.

１ 掘削体
１１ 掘削部
１１１ 筒状本体
１１２ ケーシング接続部
１１３ 攪拌羽根
１１４ 圧密板
１１５ 開閉刺突部
１２ａ，１２ｂ ケーシング
１２１ 連結部
２ 掘削装置
２１ 掘進機構
３ バックホー
４ クレーン装置
５ 回転充填体
５１ 連結シャフト
５２ シャフト部
５３ スクリュー羽根
６ 回転駆動装置
６１ 吊下げ掛け止部
６２ 捻じれ防止用腕部
６３ ワイヤー DESCRIPTION OF SYMBOLS 1 Excavation body 11 Excavation part 111 Cylindrical main body 112 Casing connection part 113 Stirring blade 114 Compaction board 115 Opening-and-closing piercing part 12a, 12b Casing 121 Connection part 2 Excavator 21 Excavation mechanism 3 Backhoe 4 Crane apparatus 5 Rotating packing body 51 Connection shaft 52 Shaft portion 53 Screw blade 6 Rotation drive device 61 Suspended hanging stop portion 62 Twist prevention arm portion 63 Wire

Claims (4)

廃棄物処分場において、必要に応じて継ぎ足し連結される所定のケーシングの先端に、回転方向に対応して外周方向に張り出し、回転方向終端側が掘削孔と対応する径とした圧密板を複数備え、下方開口部に、閉口時に逆円錐形状となり、且つ上方部分をヒンジ連結して嘴状に開閉可能とした開閉刺突部を設けた掘削部を連結した掘削体を用いて、ケーシングを抱持して回転掘削する掘進機構を備えた掘削装置で、所望の深さの掘削孔を形成する掘削工と、前記掘削工の後に、ケーシング上部開口箇所から廃棄物を投入すると共に、適宜スクリュー羽根を備えた回転充填体を掘削体内に垂下配置して、投入廃棄物に対して下方への充填圧を加え、ケーシングを順時上方に引き抜いて開口した開閉刺突部からケーシング内廃棄物を掘削孔内に残存させて、掘削孔に廃棄物を満たす埋戻し工とを、掘削位置を変更して順次繰り返してなることを特徴とする廃棄物処分場における廃棄物処理工法。   In the waste disposal site, it is provided with a plurality of compaction plates projecting in the outer peripheral direction corresponding to the rotational direction, with the diameter corresponding to the excavation hole at the front end of a predetermined casing that is added and connected as necessary. Hold the casing with the excavator that has an excavation part that is connected to the lower opening and has an inverted conical shape when closed, and an opening and closing piercing part that can be opened and closed like a hook by connecting the upper part with a hinge. Excavator with an excavation mechanism for rotating excavation, and excavator for forming an excavation hole of a desired depth, and after the excavation, waste is introduced from the upper opening portion of the casing, and screw blades are provided as appropriate. The rotating filling body is suspended in the excavation body, the filling pressure is applied downward to the input waste, and the casing is withdrawn upward in order to remove the waste in the casing into the excavation hole. Remaining in Is allowed, the waste treatment method in the waste disposal site, wherein the backfill Engineering meet waste borehole to become sequentially repeated by changing the drilling position. 埋戻し工の当初に、回転充填体を掘削体の底方に垂下配置し、投入廃棄物に対して下方への充填圧を加えると共に、適宜掘削体を僅かに上方に引き抜いて開閉刺突部を完全に開口させる開口埋戻し工を行ってなる請求項１記載の廃棄物処分場における廃棄物処理工法。   At the beginning of the backfilling operation, the rotary filling body is suspended from the bottom of the excavation body, and a downward filling pressure is applied to the input waste. The waste disposal method in the waste disposal site according to claim 1, wherein an opening backfilling process is performed to completely open the container. 掘削部の外周面における各圧密板の形成位置より下方に、螺旋間欠状に配置した攪拌羽根を設け、掘削時に孔壁面構成物を攪拌圧密して無排出掘削孔を形成してなる請求項１又は２記載の廃棄物処分場における廃棄物処理工法。   A stirring blade arranged in a spiral intermittent manner is provided below the formation position of each compaction plate on the outer peripheral surface of the excavation part, and the no-hole excavation hole is formed by stirring and compacting the hole wall surface structure during excavation. Or the waste disposal method in the waste disposal site described in 2. 埋戻し工において、廃棄物処分場の表層廃棄物をバックホーによって掻き寄せてケーシング内に投入すると共に、クレーン装置で吊下げたウエイトで投入廃棄物を填圧する請求項１乃至３記載の何れかの廃棄物処分場における廃棄物処理工法。   4. The backfilling method, wherein the waste at the waste disposal site is scraped by a backhoe and put into the casing, and the input waste is filled with a weight suspended by a crane device. Waste treatment method at waste disposal site.

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