JP4492373B2 - Disposal tunnel facility at waste geological disposal site - Google Patents

Disposal tunnel facility at waste geological disposal site Download PDF

Info

Publication number
JP4492373B2
JP4492373B2 JP2005025939A JP2005025939A JP4492373B2 JP 4492373 B2 JP4492373 B2 JP 4492373B2 JP 2005025939 A JP2005025939 A JP 2005025939A JP 2005025939 A JP2005025939 A JP 2005025939A JP 4492373 B2 JP4492373 B2 JP 4492373B2
Authority
JP
Japan
Prior art keywords
disposal
waste
horizontal
tunnel
shaft
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.)
Active
Application number
JP2005025939A
Other languages
Japanese (ja)
Other versions
JP2006214788A (en
Inventor
泰宏 須山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kajima Corp
Original Assignee
Kajima Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kajima Corp filed Critical Kajima Corp
Priority to JP2005025939A priority Critical patent/JP4492373B2/en
Publication of JP2006214788A publication Critical patent/JP2006214788A/en
Application granted granted Critical
Publication of JP4492373B2 publication Critical patent/JP4492373B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

本発明は、原子力発電から生じる放射性廃棄物等の地層処分場の地下に建設される処分坑道施設の坑道形状に関するものである。   The present invention relates to a tunnel shape of a disposal tunnel facility constructed underground of a geological disposal site for radioactive waste or the like generated from nuclear power generation.

原子力発電から生じる放射性廃棄物のうち高レベル放射性廃棄物は、使用済核燃料の再処理工程で分離された液体廃棄物であり、放射能レベルが高いばかりでなく、長期間にわたって放射能を持ち続ける長寿命の放射性核種が数多く含まれている。そのため、このような高レベル放射性廃棄物は、ガラス原料と共にステンレス鋼製のキャニスターに溶かし込みガラス固化体として安定化処理し、冷却のため数10年間貯蔵した後、ガラス固化体が収納されたキャニスターをオーバーパックと称される厚肉鋼板製の密閉容器内に密閉収納するなどして廃棄体とし、この廃棄体を地下300m(法律により決定)より深い安定した地層中に埋設処分するようにしている。   Among the radioactive waste generated from nuclear power generation, high-level radioactive waste is liquid waste separated in the reprocessing process of spent nuclear fuel, and not only has a high level of radioactivity but also continues to have radioactivity for a long period of time. It contains many long-lived radionuclides. Therefore, such high-level radioactive waste is dissolved in a stainless steel canister together with glass raw materials, stabilized as a glass solidified body, stored for several decades for cooling, and then the canister in which the glass solidified body is stored. To be disposed of in a sealed container made of thick steel plate called overpack, and disposed of in a stable formation deeper than 300m underground (determined by law). Yes.

この地層処分では、現在、地下深部にトンネル(処分坑道)を掘削し、廃棄体を埋設した後、その周囲(処分坑道内)をベントナイトなどで埋め戻すことにより埋設処分することが考えられている。この地層処分での安全性を示すためには、放射性廃棄物に含まれる核種が地下水に乗って人間が住んでいる世界に届かないように、岩盤自体の低透水性に期待すると共に、人間が掘削した処分坑道を確実に埋め戻し、核種の卓越した移行経路となる水みちを作らないことが要求されている。   In this geological disposal, it is currently considered to dig a tunnel (disposal tunnel) deep underground, bury the waste, and then backfill the surrounding area (within the disposal tunnel) with bentonite etc. . In order to demonstrate the safety of this geological disposal, we expect the low permeability of the bedrock itself so that the nuclides contained in the radioactive waste do not reach the world where people live on groundwater. There is a need to ensure that excavated disposal tunnels are backfilled and that there is no water channel that provides an excellent migration path for nuclides.

従来考えられている施設形状は、施工性、安全性、経済性の観点から、トンネルを同じ深度で並行に多数掘削し、一枚のパネルのような形状とするものである。図4、図5に示すように、高レベル放射性廃棄物の地層処分施設50は、地上施設51と地下施設52とから構成されている。地下施設52は、地上と地下を結ぶ立坑や斜坑等のアクセス坑道53、地下深部に複数並列して水平に掘削形成された処分坑道54、これら処分坑道に接続される主要坑道55等から構成されている。処分坑道54は区画されて独立した水平な処分パネルに分割されており、処分サイトの地質環境条件等に応じて、分散配置や多層配置等の柔軟なパネルレイアウトが可能とされ、また建設・操業・閉鎖の主要な作業を独立・並行して実施できるようにされている。   A conventionally considered facility shape is that a large number of tunnels are excavated in parallel at the same depth from the viewpoint of workability, safety, and economy to form a single panel. As shown in FIGS. 4 and 5, the high-level radioactive waste geological disposal facility 50 includes an above-ground facility 51 and an underground facility 52. The underground facility 52 is composed of an access tunnel 53 such as a vertical shaft or a tilt shaft connecting the ground and the underground, a disposal tunnel 54 formed by excavation horizontally in parallel in the deep underground, and a main tunnel 55 connected to these disposal tunnels. ing. The disposal tunnel 54 is partitioned and divided into independent horizontal disposal panels, and flexible panel layouts such as distributed layout and multilayer layout are possible according to the geological environmental conditions of the disposal site, and construction and operation are also possible.・ Major closure work can be carried out independently and in parallel.

また、処分坑道54における廃棄体の定置方式には、種々の方式が考えられているが、例えば、図6(a)に示すような処分孔竪置き方式、図6(b)に示すような処分坑道横置き方式がある。図6(a)では、天然バリアとしての岩盤A中に掘削形成された処分坑道54の底盤部から下に向って処分孔56を鉛直に掘削形成し、トンネル軸方向には所定の間隔をおいて多数形成し、この処分孔56内に人工バリアとして地下水や岩盤圧の影響を低減する緩衝材(ベントナイト等) Bを敷き詰めると共に、この緩衝材B中に竪にした廃棄体Cを埋設定置している。処分坑道54は埋め戻される。図6(b)では、処分坑道54内に緩衝材Bを敷き詰めると共に、この緩衝材B中に横にした廃棄体Cをトンネル軸方向に所定の間隔をおいて埋設定置している。   In addition, various methods for placing waste in the disposal tunnel 54 have been considered. For example, a disposal hole anchoring method as shown in FIG. 6 (a), as shown in FIG. 6 (b), and the like. There is a disposal tunnel horizontal installation method. In FIG. 6 (a), the disposal hole 56 is vertically drilled from the bottom of the disposal tunnel 54 formed in the rock A as a natural barrier, and a predetermined interval is provided in the tunnel axis direction. In this disposal hole 56, a buffer material (such as bentonite) B that reduces the influence of groundwater and rock pressure is laid as an artificial barrier, and the waste material C placed in the buffer material B is buried. ing. The disposal tunnel 54 is backfilled. In FIG. 6B, the buffer material B is spread in the disposal tunnel 54, and the waste C lying in the buffer material B is buried in the tunnel axis direction at a predetermined interval.

また、本発明に関連する先行技術文献として特許文献1〜9がある。特許文献1の発明は、低レベル放射性廃棄物をトンネル内に埋設処分する方法である。特許文献2の発明は、廃棄体と緩衝材とを処分孔や処分坑道に定置埋設する方法である。特許文献3の発明は、処分坑道を主要坑道から直角に分岐させて廃棄体を搬送定置するものである。特許文献4の発明は、空気搬送システムによる処分坑道等の建設方法および地層処分方法である。特許文献5の発明は、低レベル放射性廃棄物のトンネル型処分施設の処分方法である。特許文献6の発明は、高レベル放射性廃棄物の処分坑道に定置するための定置構造である。特許文献7の発明は、低レベル放射性廃棄物のトンネル型処分施設における定置方法である。特許文献8、9の発明は、放射性廃棄物を搬送用立坑や搬送用斜坑から収納用斜坑に特別な形状の緩衝体を介して交互に貯蔵処分するものである。
特開2004−298822号公報 特開2004−286451号公報 特開2003−215297号公報 特開2003−148097号公報 特開2002−341093号公報 特開2002−48900号公報 特開2002−107493号公報 特開平11−223699号公報 特開平11−153699号公報
Moreover, there are Patent Documents 1 to 9 as prior art documents related to the present invention. The invention of Patent Document 1 is a method of burying low-level radioactive waste in a tunnel. The invention of Patent Document 2 is a method of embedding a waste body and a buffer material in a disposal hole or a disposal tunnel. In the invention of Patent Document 3, the disposal mine is branched from the main mine at a right angle to transport and place the waste. The invention of Patent Document 4 is a construction method and a geological disposal method such as a disposal tunnel by an air conveyance system. The invention of Patent Document 5 is a disposal method for a tunnel-type disposal facility for low-level radioactive waste. The invention of Patent Document 6 is a stationary structure for placing in a disposal tunnel for high-level radioactive waste. The invention of Patent Document 7 is a placement method in a tunnel-type disposal facility for low-level radioactive waste. In the inventions of Patent Documents 8 and 9, radioactive waste is alternately stored and disposed from a transport vertical shaft or a transport inclined shaft to a storage inclined shaft via a specially shaped buffer.
JP 2004-298822 A JP 2004-286451 A JP 2003-215297 A JP 2003-148097 A JP 2002-340993 A JP 2002-48900 A JP 2002-107493 A Japanese Patent Laid-Open No. 11-223699 JP-A-11-153699

現在考えられている廃棄体の設置方法である竪置き方式と横置き方式には、次のような課題がある。   There are the following problems in the laying method and the horizontal method, which are currently considered waste installation methods.

(1) 竪置き方式(横置き方式と比較して)
竪置き方式では、パネル状に展開した処分坑道から下向きに廃棄体設置用の処分孔を掘削する必要がある。また、廃棄体設置用の処分孔の上で、定置設備を用いて廃棄体の定置や緩衝材の埋め戻しを行うため、広めのスペースが必要となり、坑道径を大きくする必要がある。これらの条件から、竪置き方式では、掘削土量が多くなるため、工期が長くなり、工費も高くなる。また、地上においては、掘削土量が多くなるため、より広い仮置きヤードが必要となる。
(1) Standing method (compared to horizontal method)
In the dredging method, it is necessary to dig a disposal hole for disposing the waste body downward from the disposal tunnel developed in a panel shape. Moreover, since the waste body is placed and the buffer material is backfilled using the stationary equipment on the disposal hole for installing the waste body, a wider space is required and the diameter of the tunnel is required to be increased. From these conditions, the dredging method increases the amount of excavated soil, which increases the construction period and costs. Moreover, since the amount of excavated soil increases on the ground, a larger temporary storage yard is required.

(2) 横置き方式(竪置き方式と比較して)
横置き方式では、処分坑道内に廃棄体を定置後、その周囲、特に上部の埋め戻しが困難であり、技術的信頼性に課題が残されている。図7に示すように、ブロック方式、中央孔方式、圧縮方式、ペレット方式など種々考えられているが、廃棄体の上部が充填しづらいため、天端部に隙間が生じてしまう可能性が否定できず、竪置き方式と比較して、技術的信頼性が低い。
(2) Horizontal installation method (compared to the vertical installation method)
In the horizontal installation method, it is difficult to backfill the surrounding area, particularly the upper part, after placing the waste in the disposal tunnel, and there remains a problem in technical reliability. As shown in FIG. 7, various methods such as a block method, a center hole method, a compression method, and a pellet method are considered, but it is difficult to fill the upper part of the waste body, so the possibility that a gap is generated at the top end is denied. It is not possible, and technical reliability is low compared with the laying-down method.

本発明は、このような課題を解決すべくなされたもので、その目的は、放射性廃棄物等の地層処分場の処分坑道施設において、掘削土量を低減できる廃棄体の処分坑道横置き方式であっても、処分坑道の上部の埋め戻しを容易かつ確実に行うことができ、廃棄体定置後の埋め戻しの技術的信頼性を確保することができる廃棄物地層処分場の処分坑道施設を提供することにある。   The present invention has been made in order to solve such problems, and its purpose is to provide a horizontal disposal system for waste bodies that can reduce the amount of excavated soil in a disposal tunnel facility of a geological disposal site such as radioactive waste. Even if there is, it is possible to easily and reliably backfill the upper part of the disposal tunnel, and to provide a disposal tunnel facility for the waste geological disposal site that can ensure the technical reliability of the backfill after the waste is placed There is to do.

本発明の請求項1に係る発明は、廃棄物地層処分場の地下の地盤中に建設され、廃棄物が埋設処分される処分坑道から構成される処分坑道施設であって、処分坑道を水平に対して傾斜する斜坑とし、この斜坑内の底盤の上に埋め戻し材で水平な設置面を有する設置台を形成し、前記設置台の上に廃棄物を斜坑長手方向に間隔をおいて水平または略水平の横置き方式で配置し、斜坑内の空間を埋め戻し材(ベントナイト等の緩衝材など)で埋め戻してなることを特徴とする廃棄物地層処分場の処分坑道施設である。 The invention according to claim 1 of the present invention is a disposal tunnel facility that is constructed in the underground ground of a waste geological disposal site and is composed of a disposal tunnel in which waste is buried and disposed horizontally. A tilting shaft inclined with respect to the tilt shaft is formed, and an installation table having a horizontal installation surface is formed on the bottom plate in the tilt shaft, and the waste is placed horizontally on the installation table at intervals in the longitudinal direction of the shaft. This is a disposal mine facility of a waste geological disposal site, which is arranged in a substantially horizontal horizontal system, and the space inside the inclined shaft is backfilled with a backfill material (buffer material such as bentonite).

本発明は、特に高レベル放射性廃棄物の地層処分場の処分坑道に有効に適用されるものである。その他の廃棄物の地層処分にも適用することができる。本発明は、掘削土量を減らせる廃棄体の処分坑道横置き方式を基本に、廃棄体定置後の埋め戻しの技術的信頼性を確保できる程度まで、処分坑道を傾斜させたものである。従って、この斜坑の傾斜角は、処分坑道の天端部に埋め戻し材の充填を容易に行え、天端部に隙間が生じないような傾斜角とすればよい。   The present invention is particularly effectively applied to a disposal mine in a geological disposal site for high-level radioactive waste. It can also be applied to geological disposal of other waste. In the present invention, the disposal tunnel is inclined to the extent that the technical reliability of the backfilling after the disposal of the waste can be ensured based on the horizontal disposal system of the disposal body that can reduce the amount of excavated soil. Therefore, the inclination angle of the inclined shaft may be set to an inclination angle that allows the back end material to be easily filled in the top end portion of the disposal tunnel and does not cause a gap at the top end portion.

また、請求項1に係る発明では、斜坑の底盤が傾斜しているため、この底盤の上に埋め戻し材で水平な設置面を有する設置台を形成し、この上に廃棄体を設置する。その後、廃棄体の周囲に埋め戻し材を配置し、空間部を埋め戻す。斜坑の天端は傾斜しているため、緩衝材を天端部に容易に充填することができ、天端部に隙間が生じることがなく、埋め戻しの技術的信頼性が確保される。   Moreover, in the invention which concerns on Claim 1, since the base of an inclined shaft is inclined, the installation base which has a horizontal installation surface with a backfill material is formed on this bottom, and a waste body is installed on this. Thereafter, a backfilling material is disposed around the waste body to backfill the space. Since the top end of the inclined shaft is inclined, the cushioning material can be easily filled in the top end portion, and no gap is formed in the top end portion, so that the technical reliability of backfilling is ensured.

本発明の請求項2に係る発明は、廃棄物地層処分場の地下の地盤中に建設され、廃棄物が埋設処分される処分坑道から構成される処分坑道施設であって、処分坑道を水平に対して傾斜する斜坑とし、この斜坑の底盤部に斜坑長手方向の階段を形成し、この階段の水平段部の上に埋め戻し材で水平な設置面を有する設置台を形成し、前記設置台の上に廃棄物を水平または略水平の横置き方式で配置し、斜坑内の空間を埋め戻し材(ベントナイト等の緩衝材など)で埋め戻してなることを特徴とする廃棄物地層処分場の処分坑道施設である。 The invention according to claim 2 of the present invention is a disposal tunnel facility that is constructed in the underground ground of a waste geological disposal site, and is composed of a disposal tunnel in which waste is buried and disposed horizontally. The inclined shaft is inclined with respect to the inclined shaft, and a step in the longitudinal direction of the inclined shaft is formed on the bottom plate of the inclined shaft, and an installation table having a horizontal installation surface with a backfill material is formed on the horizontal step portion of the inclined shaft. In the waste geological disposal site, the waste is disposed horizontally or in a substantially horizontal horizontal manner, and the space in the inclined shaft is backfilled with backfill material (buffer material such as bentonite). Disposal tunnel facility.

この請求項2に係る発明は、廃棄体定置後の廃棄体の安定性維持のため、斜坑の底盤を階段状に施工する場合である。斜坑の底盤に階段を一段あるいは斜坑長手方向に連続して複数段形成し、この階段の水平な段部に埋め戻し材で水平な設置面を有する設置台を形成し、この上に廃棄体を設置する。その後、廃棄体の周囲に埋め戻し材を配置し、空間部を埋め戻す。斜坑の天端は傾斜しているため、緩衝材を天端部に容易に充填することができ、天端部に隙間が生じることがなく、埋め戻しの技術的信頼性が確保される。   The invention according to claim 2 is a case where the bottom plate of the inclined shaft is constructed in a staircase shape in order to maintain the stability of the waste body after placement of the waste body. One step or multiple steps in the longitudinal direction of the shaft are formed on the bottom of the shaft, and an installation table having a horizontal installation surface is formed on the horizontal steps of the stairs with backfill material. Install. Thereafter, a backfilling material is disposed around the waste body to backfill the space. Since the top end of the inclined shaft is inclined, the cushioning material can be easily filled in the top end portion, and no gap is formed in the top end portion, so that the technical reliability of backfilling is ensured.

斜坑は、鉛直方向と水平方向に所定の距離をおいて平行に掘削形成された上下の主要坑道間に複数並列して掘削形成される。主要坑道から水平部分を掘削形成し、上下の水平部分を斜坑部分で連結するのが好ましい。   A plurality of inclined shafts are excavated in parallel between upper and lower main shafts excavated in parallel at a predetermined distance in the vertical and horizontal directions. It is preferable that the horizontal portion is excavated from the main shaft and the upper and lower horizontal portions are connected by the inclined shaft portion.

本発明は、以上のような構成からなるので、次のような効果が得られる。
(1)横置き方式の斜坑であるため、従来の竪置き方式と比較し、掘削土量を減らすことができ、工期の短縮及びコストの低減が図られる。
(2)従来の竪置き方式と比較し、掘削土量が減るため、掘削土の仮置きヤードを狭くすることができる。その結果、狭い土地でも地層処分が可能となる。
(3)従来の横置き方式と比較し、廃棄体定置後の天端部の埋め戻しが容易になり、処分坑道の天端部に隙間が生じることがなく、技術的信頼性が向上する。
Since the present invention is configured as described above, the following effects can be obtained.
(1) Because it is a horizontal type inclined shaft, it can reduce the amount of excavated soil and shorten the construction period and cost compared to the conventional vertical type.
(2) Compared to the conventional dredging method, the amount of excavated soil is reduced, so the temporary storage yard for excavated soil can be narrowed. As a result, geological disposal becomes possible even in narrow land.
(3) Compared with the conventional horizontal placement system, it becomes easier to backfill the top end after placing the waste body, and there is no gap at the top end of the disposal tunnel, improving technical reliability.

以下、本発明を図示する実施の形態に基づいて説明する。この実施形態は、高レベル放射性廃棄物の地層処分施設の処分坑道に適用した例である。図1は本発明に係る処分坑道の一例を示す鉛直断面図であり、傾斜角の異なる2つの場合を示している。図2は、本発明に係る処分坑道の他の例を示す鉛直断面図であり、傾斜角の異なる2つの場合を示している。図3は、本発明に係る処分坑道の全体のイメージを示す斜視図である。   Hereinafter, the present invention will be described based on the illustrated embodiment. This embodiment is an example applied to a disposal tunnel of a geological disposal facility for high-level radioactive waste. FIG. 1 is a vertical sectional view showing an example of a disposal mine shaft according to the present invention, and shows two cases with different inclination angles. FIG. 2 is a vertical sectional view showing another example of a disposal mine shaft according to the present invention, and shows two cases with different inclination angles. FIG. 3 is a perspective view showing an overall image of the disposal tunnel according to the present invention.

図1の実施形態においては、廃棄体Cが埋設定置される処分坑道1を水平に対して傾斜角θで傾斜させて掘削形成し、斜坑とする。この斜坑1に廃棄体(オーバーパック)Cを坑道の長手方向に所定のピッチで水平または略水平の横置き方式で配置し、この斜坑1内の空間部を埋め戻し材としての緩衝材(ベントナイト等) Bで埋め戻す。   In the embodiment of FIG. 1, the disposal mine 1 in which the waste body C is buried is tilted at an inclination angle θ with respect to the horizontal to form an inclined shaft. A waste body (overpack) C is disposed in the inclined shaft 1 in a horizontal or substantially horizontal manner at a predetermined pitch in the longitudinal direction of the tunnel, and a buffer material (bentonite) as a backfill material is filled in the space in the inclined shaft 1. Etc.) Backfill with B.

斜坑1の底盤1aは傾斜しているため、この底盤1aの上に緩衝材Bで水平な設置面を有する設置台を形成し、この上に廃棄体Cを設置する。その後、廃棄体Cの周囲に緩衝材Bを配置し、空間部を埋め戻す。斜坑1の天端1bは傾斜しているため、緩衝材Bを天端部に容易に充填することができ、天端1bに隙間が生じることがなく、埋め戻しの技術的信頼性が確保される。   Since the bottom plate 1a of the inclined shaft 1 is inclined, an installation table having a horizontal installation surface is formed on the bottom plate 1a with the buffer material B, and the waste body C is installed thereon. Then, the buffer material B is arrange | positioned around the waste body C, and a space part is refilled. Since the top end 1b of the inclined shaft 1 is inclined, the buffer material B can be easily filled in the top end portion, and no gap is formed in the top end 1b, so that technical reliability of backfilling is ensured. The

傾斜角θは、斜坑1の天端1bに隙間が生じることなく、埋め戻しの技術的信頼性が確保できる範囲で、任意に設定することができる。   The inclination angle θ can be arbitrarily set within a range in which the technical reliability of backfilling can be ensured without causing a gap at the top end 1b of the inclined shaft 1.

図2の実施形態においては、斜坑1の底盤に坑道の長手方向に連続する階段2を形成し、各段2aに廃棄物Cを水平または略水平の横置き方式で配置し、廃棄体Cの下方の支持面を水平とすることで、廃棄体定置後の廃棄体Cの安定性の維持を図る。階段2の水平段部2a上に緩衝材Bで水平な設置面を有する設置台を形成し、その上に廃棄体Cを設置する。なお、階段は一段でもよい。 In the embodiment of FIG. 2, a staircase 2 continuous in the longitudinal direction of the shaft is formed on the bottom of the inclined shaft 1, and the waste C is arranged horizontally or substantially horizontally on each step 2 a, By maintaining the lower support surface horizontal, the stability of the waste body C after placement of the waste body is maintained. An installation base having a horizontal installation surface is formed on the horizontal step portion 2a of the staircase 2 with the buffer material B, and the waste body C is installed thereon. The stairs may be one step.

図1と同様に、空間部を緩衝材Bで埋め戻す。図1と同様に、天端1bに隙間が生じることがなく、埋め戻しの技術的信頼性が確保される。   As in FIG. 1, the space is backfilled with the buffer material B. As in FIG. 1, there is no gap at the top end 1b, and the technical reliability of backfilling is ensured.

図3に示すように、斜坑による処分坑道1は、従来のパネル方式と同様に、主要坑道3、4間に複数並列して掘削形成される。主要坑道3、4は、鉛直方向と水平方向に所定の距離をおいて平行に掘削形成され、上下の主要坑道3、4が斜坑による処分坑道1により連結される。上下の主要坑道3、4から水平部分11a、11bを突出させ、この水平部分11a、11bの間に斜坑部分11cを設けるのが好ましい。   As shown in FIG. 3, the disposal mine shaft 1 by the inclined shaft is excavated and formed in parallel between the main mine shafts 3 and 4, as in the conventional panel system. The main mine shafts 3 and 4 are excavated and formed in parallel at a predetermined distance in the vertical direction and the horizontal direction, and the upper and lower main mine shafts 3 and 4 are connected by the disposal mine shaft 1 by the inclined shaft. It is preferable that the horizontal portions 11a and 11b protrude from the upper and lower main shafts 3 and 4 and the inclined shaft portion 11c is provided between the horizontal portions 11a and 11b.

なお、以上は放射性廃棄物の地層処分場に適用した場合について説明したが、その他の廃棄物の地層処分にも適用することができる。   In addition, although the above demonstrated the case where it applied to the geological disposal site of radioactive waste, it is applicable also to the geological disposal of other waste.

本発明に係る処分坑道の一例を示す鉛直断面図であり、傾斜角の異なる2つの場合を示している。It is a vertical sectional view showing an example of a disposal tunnel according to the present invention, and shows two cases with different inclination angles. 本発明に係る処分坑道の他の例を示す鉛直断面図であり、傾斜角の異なる2つの場合を示している。It is a vertical sectional view showing other examples of a disposal mine shaft according to the present invention, and shows two cases with different inclination angles. 本発明に係る処分坑道の全体のイメージを示す斜視図である。It is a perspective view which shows the whole image of the disposal mine shaft which concerns on this invention. 高レベル放射性廃棄物の地層処分施設を示す部分断面斜視図である。It is a fragmentary sectional perspective view which shows the geological disposal facility of a high level radioactive waste. 従来の処分坑道による処分パネルを示す平面図である。It is a top view which shows the disposal panel by the conventional disposal tunnel. 廃棄体の定置方法を断面にして示す斜視図であり、(a)は処分孔竪置き方式、(b)は処分坑道横置き方式である。It is a perspective view which makes the cross section the placement method of a waste body, (a) is a disposal hole dredging system, (b) is a disposal tunnel horizontal installation system. 横置き時の廃棄体周辺への埋め戻しの困難さを竪置き時と比較して示す鉛直断面図である。It is a vertical sectional view which shows the difficulty of backfilling around the waste body at the time of horizontal placement in comparison with that at the time of standing.

符号の説明Explanation of symbols

1…斜坑(処分坑道)
1a…底盤
1b…天端
2…階段
2a…各段(水平段部)
3…上部の主要坑道
4…下部の主要坑道
11a…水平部分
11b…水平部分
11c…斜坑部分
A…岩盤
B…緩衝材
C…廃棄体
1 ... Slope shaft (disposal tunnel)
DESCRIPTION OF SYMBOLS 1a ... Bottom board 1b ... Top end 2 ... Stairs 2a ... Each step (horizontal step part)
3 ... Upper main tunnel 4 ... Lower main tunnel 11a ... Horizontal portion 11b ... Horizontal portion 11c ... Slope shaft portion A ... Bedrock B ... Buffer material C ... Waste

Claims (2)

廃棄物地層処分場の地下の地盤中に建設され、廃棄物が埋設処分される処分坑道から構成される処分坑道施設であって、
処分坑道を水平に対して傾斜する斜坑とし、この斜坑内の底盤の上に埋め戻し材で水平な設置面を有する設置台を形成し、前記設置台の上に廃棄物を斜坑長手方向に間隔をおいて水平または略水平の横置き方式で配置し、斜坑内の空間を埋め戻し材で埋め戻してなることを特徴とする廃棄物地層処分場の処分坑道施設。
A disposal tunnel facility that is constructed in the underground ground of a waste geological disposal site and consists of disposal tunnels in which waste is buried,
The disposal tunnel is inclined with respect to the horizontal, and an installation base having a horizontal installation surface is formed on the bottom plate of the inclination shaft with backfill material, and the waste is spaced on the installation base in the longitudinal direction of the inclination shaft. Disposal tunnel facility in a waste geological disposal site, which is arranged horizontally or substantially horizontally and backfilled with a backfill material.
廃棄物地層処分場の地下の地盤中に建設され、廃棄物が埋設処分される処分坑道から構成される処分坑道施設であって、
処分坑道を水平に対して傾斜する斜坑とし、この斜坑の底盤部に斜坑長手方向の階段を形成し、この階段の水平段部の上に埋め戻し材で水平な設置面を有する設置台を形成し、前記設置台の上に廃棄物を水平または略水平の横置き方式で配置し、斜坑内の空間を埋め戻し材で埋め戻してなることを特徴とする廃棄物地層処分場の処分坑道施設。
A disposal tunnel facility that is constructed in the underground ground of a waste geological disposal site and consists of disposal tunnels in which waste is buried,
The disposal tunnel is inclined with respect to the horizontal, and a step in the longitudinal direction of the shaft is formed on the bottom of the shaft, and an installation table with a horizontal installation surface is formed on the horizontal step of the stairs with backfill material. A disposal tunnel facility of a waste geological disposal site , wherein the waste is disposed on the installation table in a horizontal or substantially horizontal horizontal manner, and the space in the inclined shaft is backfilled with a backfilling material. .
JP2005025939A 2005-02-02 2005-02-02 Disposal tunnel facility at waste geological disposal site Active JP4492373B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005025939A JP4492373B2 (en) 2005-02-02 2005-02-02 Disposal tunnel facility at waste geological disposal site

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005025939A JP4492373B2 (en) 2005-02-02 2005-02-02 Disposal tunnel facility at waste geological disposal site

Publications (2)

Publication Number Publication Date
JP2006214788A JP2006214788A (en) 2006-08-17
JP4492373B2 true JP4492373B2 (en) 2010-06-30

Family

ID=36978151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005025939A Active JP4492373B2 (en) 2005-02-02 2005-02-02 Disposal tunnel facility at waste geological disposal site

Country Status (1)

Country Link
JP (1) JP4492373B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4822996B2 (en) * 2006-09-19 2011-11-24 鹿島建設株式会社 Underground storage facility of waste geological disposal site and waste recovery method
JP6405611B2 (en) * 2013-10-02 2018-10-17 株式会社大林組 Radioactive waste disposal facility and its construction method
KR102400432B1 (en) * 2020-04-29 2022-05-20 한국원자력연구원 Disposal system of radioactive waste for reducing disposal area

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61501796A (en) * 1984-04-10 1986-08-21
JPH10215684A (en) * 1997-02-07 1998-08-18 Gold Kosan Kk Plant cultivation device
JPH11223699A (en) * 1998-02-09 1999-08-17 Ishikawajima Harima Heavy Ind Co Ltd Radioactive stratum disposal facility and its using method
JPH11262906A (en) * 1997-11-25 1999-09-28 Kishikawa Shoji Kk Manufacture of formed matter by utilizing waste paper, and formed matter
JP2001166093A (en) * 1999-12-14 2001-06-22 Kajima Corp Method for geological d of waste and tube type geological disposal facility
JP2004298822A (en) * 2003-04-01 2004-10-28 Mitsubishi Heavy Ind Ltd Waste disposal method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61501796A (en) * 1984-04-10 1986-08-21
JPH10215684A (en) * 1997-02-07 1998-08-18 Gold Kosan Kk Plant cultivation device
JPH11262906A (en) * 1997-11-25 1999-09-28 Kishikawa Shoji Kk Manufacture of formed matter by utilizing waste paper, and formed matter
JPH11223699A (en) * 1998-02-09 1999-08-17 Ishikawajima Harima Heavy Ind Co Ltd Radioactive stratum disposal facility and its using method
JP2001166093A (en) * 1999-12-14 2001-06-22 Kajima Corp Method for geological d of waste and tube type geological disposal facility
JP2004298822A (en) * 2003-04-01 2004-10-28 Mitsubishi Heavy Ind Ltd Waste disposal method

Also Published As

Publication number Publication date
JP2006214788A (en) 2006-08-17

Similar Documents

Publication Publication Date Title
JP4492373B2 (en) Disposal tunnel facility at waste geological disposal site
JP4225245B2 (en) Underwater tunnel structure
JP4270023B2 (en) Ladder-type underground facility for waste geological disposal facility
JP5740456B2 (en) Radioactive waste underground storage facility and construction method thereof
JP4798057B2 (en) Geological disposal facility and its construction method
JP4356252B2 (en) Geological disposal facility and disposal tunnel segment
JP4822996B2 (en) Underground storage facility of waste geological disposal site and waste recovery method
JP2006035068A (en) Arrangement method for waste ground layer disposal field
JP6464469B2 (en) Radioactive waste disposal tunnel
JP4281618B2 (en) Underground facility of waste geological disposal facility
JP5637376B2 (en) Method of burying radioactive waste
JP5135706B2 (en) Geological disposal facility and its construction method
JP4253783B2 (en) Geological disposal facility and its construction method
JP2002048900A (en) Structure for fixing high-level radioactive waste for geologic disposal
JP2002214394A (en) Geological disposal facility and its execution method
JP2008026019A (en) Vertical shaft of waste underground burying disposal facility, and vertical shaft construction method of waste underground burying disposal facility
EP0665917B1 (en) Polder principle using shielding walls and method for producing said polder
JP4453577B2 (en) Waste geological disposal facility
CN210195766U (en) Underground structure is built in same direction as digging to hunch lid
Tan et al. Special design considerations for underpinning systems of existing structures due to tunnelling
CN210195752U (en) Underground structure is built to arched cover undercut
US11183313B2 (en) Systems and methods for nuclear waste disposal using grids
JP2007154603A (en) Uneven settlement preventing method for building
JPH10131209A (en) Construction method for preventing displacement of earth structure caused by liquefied ground
Trevorrow et al. Greater-Confinement Disposal

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20071205

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091110

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091117

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100118

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100316

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100329

R150 Certificate of patent or registration of utility model

Ref document number: 4492373

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130416

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20160416

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250