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1. JP2012225143 - GROUND IMPROVEMENT METHOD

Office Japan
Application Number 2011159456
Application Date 21.07.2011
Publication Number 2012225143
Publication Date 15.11.2012
Publication Kind A
IPC
E02D 3/10
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
3Improving or preserving soil or rock, e.g. preserving permafrost soil
02Improving by compacting
10by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
E02D 27/34
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
27Foundations as substructures
32Foundations for special purposes
34Foundations for sinking or earthquake territories
CPC
E02D 3/10
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS
3Improving or preserving soil or rock, e.g. preserving permafrost soil
02Improving by compacting
10by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
Applicants ASAHI TECHNO:KK
株式会社アサヒテクノ
Inventors TAKAHASHI MOKICHI
高橋 茂吉
OZAKI TETSUJI
尾崎 哲二
HYODO MASAYUKI
兵動 正幸
CHU SOON-HOE
チュウ ス―ン ホエ
LIEW KIAN HENG
リュー キィアン ヘン
Agents 荒船 博司
荒船 良男
Priority Data 2011025531 09.02.2011 JP
Title
(EN) GROUND IMPROVEMENT METHOD
(JA) 地盤の改良工法
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide an auxiliary method which is used as the auxiliary for a soft ground improvement method and a ground decontamination method based on promotion of vacuumization and which can encourage improvement effects and decontamination in an improvement area as a whole uniformly and at an early stage.

SOLUTION: Two wells 1 and 2 are placed in the ground at a prescribed interval, and water and air are pressure-pumped into the ground from one well 1 through a lower strainer 10 while water and air in the ground are sucked from the other well 2 through a lower strainer 20. Specifically water supply by a water supply pump 12 and air supply by a compressor 15 are performed to one well 1 while water lifting by a lifting pump 21 and air intake by a vacuum pump 25 are performed from the other well 2. Then, pressure-pumping of water and air into the ground from one well 1 and suction of water and air in the ground from the other well 2 are performed repeatedly.

COPYRIGHT: (C)2013,JPO&INPIT

(JA)

【課題】真空気化促進による軟弱地盤改良工法と土壌浄化工法の補助として用いる工法で、改良エリア全体をムラなく早期に改良効果と浄化を進めるための補助工法を提供する。
【解決手段】地盤に所定間隔をあけて2本の井戸1・2を設置し、一方の井戸1から水と空気を下部のストレーナ10を介して地中に圧送するとともに、他方の井戸2から下部のストレーナ20を介して地中の水と空気を吸引する。具体的には、一方の井戸1に送水ポンプ12による送水とコンプレッサー15による送気を行って、他方の井戸2から揚水ポンプ21による揚水とバキュームポンプ25による吸気を行う。そして、一方の井戸1からの水と空気の地中への圧送と、他方の井戸2からの地中の水と空気の吸引とを繰り返し行う。
【選択図】図1

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