JP4780550B2 - 埋立て廃棄物の覆土施工方法及び埋立て廃棄物の浸透水キャピラリーバリア層 - Google Patents
埋立て廃棄物の覆土施工方法及び埋立て廃棄物の浸透水キャピラリーバリア層 Download PDFInfo
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- JP4780550B2 JP4780550B2 JP2005028956A JP2005028956A JP4780550B2 JP 4780550 B2 JP4780550 B2 JP 4780550B2 JP 2005028956 A JP2005028956 A JP 2005028956A JP 2005028956 A JP2005028956 A JP 2005028956A JP 4780550 B2 JP4780550 B2 JP 4780550B2
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Description
また、下層は廃棄物の保護層を整地した後マットを敷くだけで前記下層を形成することができ、キャピラリーバリア層を簡便に施工することができる。
まず、実施形態に係る埋立て廃棄物の浸透水キャピラリーバリア層の施工対象となる埋立て廃棄物の覆土構造について説明する。図2に埋立て廃棄物の覆土構造の概略断面図を示す。廃棄物10を埋め立てる場所は、例えば、緩傾斜地を利用して凹陥地を造成することにより埋立て領域とする。もちろん平坦地に造成しても良い。この凹陥地の山側法面、底部、および左右の法面に遮水層12を敷設する。この遮水層12は水の透過を防止できるものであって現行法令に準ずれば、二重シート構造もしくは難透水層をシートで覆った構造となる。例えば、凹陥地の掘削によって生じた土と、水と接すると膨潤して水が非常に浸透しにくくなる性質を持つ粘土鉱物のベントナイトを混合して生成した有害物質の拡散遅延性能を持つ遮水土を層状に敷設し、遮水シートで覆えばよい。この遮水層12は凹陥地の底部に敷設されるとともに、その周縁部から山側及び左右の法面に沿って上方に立ち上げるように敷設する。これにより、凹陥地周辺の地下水が凹陥地内部に侵入するのを防止できる。
なお、マット18は保護層16上に直に敷設するほか、導水勾配面の平坦性を確保するため保護層16上にレキを敷いてその上に敷設してもよい。
Claims (2)
- 埋立て廃棄物を覆土する保護層に勾配を付して、前記保護層の勾配に沿って空隙が大きなマットを敷設して、前記マットよりも空隙が小さく大きな毛管力を備えた排水層を前記マット上に敷設して浸透水キャピラリーバリア層を形成することを特徴とする埋立て廃棄物の覆土施工方法。
- 埋立て廃棄物保護層の上表面に空隙の異なる層を二層積層して導水勾配を付した浸透水キャピラリーバリア層であって、前記空隙の異なる層は、前記保護層の勾配に沿って空隙が大きなマットと、前記マットよりも空隙が小さく大きな毛管力を備えた排水層を前記マット上に形成したことを特徴とする埋立て廃棄物の浸透水キャピラリーバリア層。
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JP2005028956A JP4780550B2 (ja) | 2005-02-04 | 2005-02-04 | 埋立て廃棄物の覆土施工方法及び埋立て廃棄物の浸透水キャピラリーバリア層 |
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JP6197175B2 (ja) * | 2012-08-31 | 2017-09-20 | パナソニックIpマネジメント株式会社 | 廃棄物の覆土構造、及び廃棄物の覆土構造の製造方法 |
JP6054114B2 (ja) * | 2012-09-20 | 2016-12-27 | 飛島建設株式会社 | キャピラリーバリア多層地盤における集排水制御構造の構築方法 |
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JPH02187184A (ja) * | 1989-01-13 | 1990-07-23 | Toyo Tire & Rubber Co Ltd | 産業廃棄物の最終処理場における埋立工法及びガス抜き遮水シート |
JP2830560B2 (ja) * | 1991-11-22 | 1998-12-02 | 株式会社大林組 | 廃棄物処分場における最終覆土工法 |
JPH11226535A (ja) * | 1998-02-12 | 1999-08-24 | Osuto Land:Kk | 埋立処分又は投棄廃棄物からの汚染拡散防止方法 |
JP4363079B2 (ja) * | 2003-04-28 | 2009-11-11 | 日本国土開発株式会社 | 埋立て廃棄物の安定化促進方法とシステム |
JP4372464B2 (ja) * | 2003-06-18 | 2009-11-25 | タキロン株式会社 | 廃棄物処分場のキャッピング構造 |
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