JPH11280093A - Watertight structure of underground bedrock tank - Google Patents
Watertight structure of underground bedrock tankInfo
- Publication number
- JPH11280093A JPH11280093A JP10080877A JP8087798A JPH11280093A JP H11280093 A JPH11280093 A JP H11280093A JP 10080877 A JP10080877 A JP 10080877A JP 8087798 A JP8087798 A JP 8087798A JP H11280093 A JPH11280093 A JP H11280093A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- water
- ground
- hole
- underground
- 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.)
- Pending
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、石油や液化天然ガ
ス(LPG)等を地下の岩盤内に貯蔵する地下岩盤タン
クの水封構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water seal structure of an underground rock tank for storing petroleum, liquefied natural gas (LPG) and the like in an underground rock.
【0002】[0002]
【従来の技術】石油やLPGの貯蔵方法として地下岩盤
タンクが提案されている。地下岩盤タンクとは、地中の
岩盤を掘削して空洞を造り、この空洞に石油等を注入し
て貯蔵するものである。この地下岩盤タンクは、地上に
築造される通常のタンクと比較して、保安防災、環境保
全の面で優れており、特に、タンク腐食の問題がないた
め、防錆対策が不要である他、保安施設や管理要員も少
なくて済むといった利点がある。2. Description of the Related Art Underground rock tanks have been proposed as a method for storing petroleum and LPG. The underground rock tank is for excavating underground rock to form a cavity, and injecting oil and the like into the cavity to store the cavity. Compared with ordinary tanks built on the ground, this underground rock tank is superior in terms of safety and disaster prevention and environmental protection.Especially, since there is no problem of tank corrosion, there is no need for rust prevention measures, It has the advantage of requiring fewer security facilities and management personnel.
【0003】一方、地下岩盤タンクでは、貯蔵された石
油等が空洞から地中へ浸透することを防止するため、タ
ンク周辺の地下水圧を当該石油等の液圧より高く維持す
る必要がある(これを水封という)。このため、従来で
は、タンクに沿って水路を掘削し、必要に応じてこの水
路からタンク周辺の地中へ水を供給することにより、地
下水圧を調節している。係る従来の水封構造を図2によ
り説明する。On the other hand, in an underground rock tank, it is necessary to maintain the underground water pressure around the tank higher than the hydraulic pressure of the petroleum or the like in order to prevent the stored oil or the like from penetrating into the ground from the cavity. Is called a water seal). For this reason, conventionally, a waterway is excavated along a tank, and water is supplied from the waterway to the underground around the tank as necessary to adjust the groundwater pressure. Such a conventional water seal structure will be described with reference to FIG.
【0004】水封構造10は、水平方向に延在した地下
岩盤タンク12の上方に設けられた水路たる水封トンネ
ル11a及び水封ボーリング孔11bからなる。水封ト
ンネル11aは、タンク12の長手方向に沿って設けら
れ、ここから、多数本の水封ボーリング孔11bが水平
方向に放射状に設けられる。そして、水封トンネル11
aに水を供給すると、これが水封ボーリング孔11bを
介してタンク12上方の岩盤に満遍なく供給され、地下
水圧が調節される。The water seal structure 10 includes a water seal tunnel 11a and a water seal boring hole 11b which are water channels provided above an underground rock tank 12 extending in the horizontal direction. The water-seal tunnel 11a is provided along the longitudinal direction of the tank 12, from which a large number of water-seal boring holes 11b are provided radially in the horizontal direction. And water seal tunnel 11
When water is supplied to a, the water is evenly supplied to the bedrock above the tank 12 through the water seal boring hole 11b, and the underground water pressure is adjusted.
【0005】[0005]
【発明が解決しようとする課題】この水封構造の施工
は、作業トンネルの途中から分岐してまず水封トンネル
を掘削し、その後掘削した水封トンネル内から水封ボー
リングが打ち込まれる。しかし、作業トンネルから分岐
して水封トンネルを施工すると、水封トンネルの施工に
より生じたずりの排出等は、作業トンネルを介して行う
ことになり、これはタンクの施工等の他の作業の遅延を
招くこととなる。In the construction of the water-sealed structure, the water-sealed tunnel is branched from the middle of the working tunnel, the water-sealed tunnel is excavated first, and then the water-sealed boring is driven from the excavated water-sealed tunnel. However, when branching off from the work tunnel and constructing a water seal tunnel, the waste generated by the construction of the water seal tunnel will be discharged through the work tunnel, which will be used for other work such as tank construction. This will cause a delay.
【0006】従って、本発明の目的は、タンク等の施工
に与える影響が極めて小さい地下岩盤タンクの水封構造
を提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a water sealing structure for an underground rock tank that has a very small effect on the construction of the tank and the like.
【0007】[0007]
【課題を解決するための手段】本発明によれば、所定の
地下水圧を得るために、地下岩盤タンクの周辺岩盤に対
して水を供給する水路を備える水封構造において、前記
水路が、前記タンクの長手方向に沿った部分を有し、か
つ、地上から穿孔されたボーリング孔であることを特徴
とする地下岩盤タンクの水封構造が提供される(請求項
1)。この手段では、水封のための水路が、作業トンネ
ルから分岐して施工されたものではなく、別途独立して
地上から穿孔されたものである。従って、本発明の水封
構造は、水路の施工とタンク等の施工とが全く別の作業
となるので、タンク等の施工が遅延することが無い。According to the present invention, in order to obtain a predetermined underground water pressure, in a water seal structure provided with a water channel for supplying water to the rock around the underground rock tank, A water sealing structure for an underground rock tank is provided, which has a portion along a longitudinal direction of the tank and is a boring hole drilled from the ground (claim 1). In this means, the water channel for water sealing is not formed by branching from the work tunnel, but is separately drilled from the ground. Therefore, in the water seal structure of the present invention, the construction of the water channel and the construction of the tank and the like are completely different operations, so that the construction of the tank and the like is not delayed.
【0008】また、この手段では、タンク周辺に水を供
給する場合には、地上からボーリング孔に水を注入する
ことにより行うが、このボーリング孔は、タンクの長手
方向に沿った部分を有するので、ボーリング孔の本数が
少くともタンク周辺の岩盤全体に効率良く水を供給する
ことができ、地下水圧の均等な調整ができる。本発明に
おいて、前記ボーリング孔は、いわゆるコントロールボ
ーリングによって穿孔することができる。In this means, when water is supplied to the periphery of the tank, water is injected from the ground into the boring hole. However, since the boring hole has a portion extending along the longitudinal direction of the tank. In addition, water can be efficiently supplied to the entire bedrock around the tank even if the number of boring holes is small, and the groundwater pressure can be adjusted evenly. In the present invention, the boring hole can be formed by so-called control boring.
【0009】[0009]
【発明の実施の形態】
以下、本発明の好適な実施の形態を添付図面に基づ
いて説明する。図1(a)は、本発明に係る水封構造を
示す側面図、図1(b)は、その途中位置の断面図であ
る。図1において、地下岩盤タンク1は、岩盤中を略水
平方向に延在して設けられており、石油等は配管により
プラグ2を介して立坑3を通ってタンク1内に貯蔵さ
れ、或は、払出しが行われる。地下岩盤タンク1の水封
構造Aは、地上から穿孔された複数本のボーリング孔4
からなる。ボーリング孔4は、コントロールボーリング
によって地上から滑らかな曲線を描いてタンク1に至
り、その後タンク1の長手方向へ直線状に穿孔されたも
のである。すなわち、このボーリング孔4は、地上から
タンク1近傍に至までの曲線状の部分4bと、タンク1
の長手方向に沿った直線状の部分4aと、からなるもの
である。BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1A is a side view showing a water seal structure according to the present invention, and FIG. 1B is a cross-sectional view at an intermediate position. In FIG. 1, an underground rock tank 1 is provided extending in a substantially horizontal direction in a rock, and oil or the like is stored in the tank 1 through a shaft 3 through a plug 2 by a pipe, or , Payout is performed. The water seal structure A of the underground rock tank 1 has a plurality of boring holes 4 drilled from the ground.
Consists of The boring hole 4 is formed by drawing a smooth curve from the ground to the tank 1 by control boring, and is then drilled linearly in the longitudinal direction of the tank 1. That is, the boring hole 4 has a curved portion 4b from the ground to the vicinity of the tank 1 and the tank 1
And a linear portion 4a along the longitudinal direction of
【0010】なお、ボーリング孔4のうち、タンク1の
長手方向に沿った部分4aについては、図1(b)に示
すとおり、水封の目的に応じて、タンク1の上方(横水
封)或は側方(縦水封:4a’)に穿孔される。一般
に、横水封とは単体の液体を貯蔵された場合の水封をい
い、縦水封とは異種複数の液体を貯蔵した場合に、その
混合を防止するための水封をいう。As shown in FIG. 1B, a portion 4a of the boring hole 4 along the longitudinal direction of the tank 1 is located above the tank 1 (horizontal water seal) according to the purpose of the water seal. Or it is pierced to the side (vertical water seal: 4a '). Generally, a horizontal water seal refers to a water seal when a single liquid is stored, and a vertical water seal refers to a water seal for preventing a mixture of a plurality of different liquids when they are stored.
【0011】係る構成からなる水封構造Aでは、水路た
るボーリング孔4が地上から穿孔されるので、タンク1
施工等と並行した施工が可能となり工期の短縮化が図れ
る。そして、タンク1の水封は、地上からボーリング孔
4に水が注入されることにより行われるが、ボーリング
孔4がタンク1の長手方向に沿った部分4aを有するの
で、ボーリング孔4の本数が少くともタンク1周辺全体
に渡って満遍なく水が供給され、地下水圧が均等に調整
される。In the water seal structure A having such a configuration, the boring hole 4 as a water channel is drilled from the ground.
Construction can be performed in parallel with construction, etc., and the construction period can be shortened. The water sealing of the tank 1 is performed by pouring water into the boring hole 4 from the ground. Since the boring hole 4 has a portion 4a extending in the longitudinal direction of the tank 1, the number of the boring holes 4 is reduced. Water is supplied evenly over at least the entire periphery of the tank 1, and the underground water pressure is adjusted evenly.
【図1】(a)本発明に係る水封構造を示す側面図であ
る。 (b)図1の途中位置の断面図である。FIG. 1 (a) is a side view showing a water seal structure according to the present invention. FIG. 2B is a cross-sectional view of an intermediate position in FIG. 1.
【図2】従来の水封構造10の外観図である。FIG. 2 is an external view of a conventional water seal structure 10.
A 水封構造 1 地下岩盤タンク 2 プラグ 4 ボーリング孔 A Water seal structure 1 Underground rock tank 2 Plug 4 Boring hole
Claims (1)
タンクの周辺岩盤に対して水を供給する水路を備える水
封構造において、 前記水路が、前記タンクの長手方向に沿った部分を有
し、かつ、地上から穿孔されたボーリング孔であること
を特徴とする地下岩盤タンクの水封構造。1. A water seal structure having a water channel for supplying water to the surrounding rock of an underground rock tank in order to obtain a predetermined groundwater pressure, wherein the water channel has a portion along a longitudinal direction of the tank. And a boring hole drilled from the ground.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10080877A JPH11280093A (en) | 1998-03-27 | 1998-03-27 | Watertight structure of underground bedrock tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10080877A JPH11280093A (en) | 1998-03-27 | 1998-03-27 | Watertight structure of underground bedrock tank |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11280093A true JPH11280093A (en) | 1999-10-12 |
Family
ID=13730584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10080877A Pending JPH11280093A (en) | 1998-03-27 | 1998-03-27 | Watertight structure of underground bedrock tank |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11280093A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002243376A (en) * | 2001-02-21 | 2002-08-28 | Shimizu Corp | Base rock hot water storing facility |
JP2022524893A (en) * | 2019-03-22 | 2022-05-10 | ハイパートンネル アイピー リミティッド | Methods and systems for constructing underground tunnels |
-
1998
- 1998-03-27 JP JP10080877A patent/JPH11280093A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002243376A (en) * | 2001-02-21 | 2002-08-28 | Shimizu Corp | Base rock hot water storing facility |
JP2022524893A (en) * | 2019-03-22 | 2022-05-10 | ハイパートンネル アイピー リミティッド | Methods and systems for constructing underground tunnels |
US11591908B2 (en) | 2019-03-22 | 2023-02-28 | Hypertunnel Ip Limited | Method and system of constructing an underground tunnel |
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