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1. JP2004124542 - APPARATUS AND METHOD FOR IMPROVING SOFT GROUND, AND APPARATUS AND METHOD FOR DECONTAMINATING CONTAMINATED SOIL

Office Japan
Application Number 2002291138
Application Date 03.10.2002
Publication Number 2004124542
Publication Date 22.04.2004
Grant Number 4076424
Grant Date 08.02.2008
Publication Kind B2
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
B09C 1/06
BPERFORMING OPERATIONS; TRANSPORTING
09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
CRECLAMATION OF CONTAMINATED SOIL
1Reclamation of contaminated soil
06thermally
E02D 3/11
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
11by thermal, electrical or electro-chemical means
Applicants ASAHI TECHNO:KK
株式会社アサヒテクノ
Inventors TAKAHASHI MOKICHI
高橋 茂吉
Agents 荒船 博司
荒船 良男
Title
(EN) APPARATUS AND METHOD FOR IMPROVING SOFT GROUND, AND APPARATUS AND METHOD FOR DECONTAMINATING CONTAMINATED SOIL
(JA) 軟弱地盤改良方法
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide an apparatus and method for improving the soft ground for positively completing the improvement of the soft ground in a short time using dewatering and loading, and to provide an apparatus and method for decontaminating contaminated soil for positively completing decontamination of the contaminated soil in a short time.

SOLUTION: The apparatus for improving the soft ground is provided with an underground water level lowering means 1 for lowering the underground water level in the soft ground; a ground heating means 2 for heating the ground located on the upper side of the lowered underground water level, to vaporize pore water included in the ground; and a ground loading means 3 for applying load to the heated ground to carry out the consolidation settlement of the ground. The underground water level lowering means 1 comprises a casing pipe 11 additionally provided with a strainer 11a; an inner cylinder pipe 12 having a water hole 12a; and a suction-discharge apparatus 13 for sucking and discharging underground water. The underground water level lowering means 1 is used also as the ground loading means 3. The suction-discharge apparatus 13 sucks and discharges also gas vaporized by the ground heating means 3.

COPYRIGHT: (C)2004,JPO

(JA)

【課題】脱水及び載荷を利用した軟弱地盤の改良を短時間に確実に完了する軟弱地盤改良装置及びその方法並びに汚染地盤の浄化を短時間に確実に完了する汚染地盤浄化装置及びその方法を提供する。
【解決手段】軟弱地盤における地下水位を低下させる地下水位低下手段1と、低下した地下水位の上側に位置する地盤を加熱して地盤に含まれる間隙水を気化させる地盤加熱手段2と、加熱した地盤に荷重を加えて地盤を圧密沈下させる地盤載荷手段3とを備える軟弱地盤改良装置である。地下水位低下手段1は、ストレーナー11aが付設されるケーシング管11と、通水孔12aを有する内筒管12と、地下水を吸引して排出する吸引排出装置13とからなり、地盤載荷手段3としても用いられる。吸引排出装置13は、地盤加熱手段3により気化した気体をも吸引して排出する。
【選択図】 図1