Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
GROUND INJECTION DEVICE AND GROUND INJECTION METHOD
PROBLEM TO BE SOLVED: To provide a ground injection device and a ground injection method suitable for increasing strength of the heterogeneous ground of a soil particle and preventing liquefaction.SOLUTION: A ground injection device is constituted of an injection outer pipe 2 installed in a drilled hole 4 and an injection inner pipe 3 installed in the injection outer pipe 2. The injection outer pipe 2 comprises an outer pipe body 6 having a plurality of injection material discharge ports 6a in the pipe axial direction, a check valve 7 for closing the injection material discharge port 6a by being brought into close contact with an outer peripheral surface of the outer pipe body 6 and opening the injection material discharge port 6a by discharge pressure of an injection material injected via the injection inner pipe 3, a rubber slit tube 8 having a plurality of injection material injection slits 8a at an interval in the pipe axial direction, brought into close contact with the outer peripheral surface of the outer pipe body 6 and the check valve 7 and opening the injection material injection slit 8a by the discharge pressure of the injection material and a plurality of fixtures 9 installed at an interval in the pipe axial direction of the outer pipe body 6 on the outer periphery of the rubber slit tube 8 and partitioning the rubber slit tube 8 into a plurality of sections in the pipe axial direction.SELECTED DRAWING: Figure 1
【課題】土粒子の不均質地盤の強度増大、液状化防止等を行うのに適した地盤注入装置及び地盤注入工法を提供する。【解決手段】削孔4内に設置された注入外管2と注入外管2内に設置された注入内管3とから構成する。注入外管2は管軸方向に複数の注入材吐出口6aを有する外管本体6と、外管本体6の外周面に密着して注入材吐出口6aを閉じ、かつ注入内管3を通して注入される注入材の吐出圧によって注入材吐出口6aを開ける逆止弁7と、複数の注入材噴射スリット8aを管軸方向に間隔をおいて有し、外管本体6及び逆止弁7の外周面に密着し、かつ注入材の吐出圧によって注入材噴射スリット8aが開くゴムスリットチューブ8と、ゴムスリットチューブ8の外周に外管本体6の管軸方向に間隔をおいて取り付けられ、ゴムスリットチューブ8を管軸方向に複数の区間に区画する複数の固定具9を備えている。【選択図】図１
GROUND INJECTION DEVICE AND GROUND INJECTION METHOD
PROBLEM TO BE SOLVED: To provide a ground injection device and a ground injection method suitable for increasing strength of the heterogeneous ground of a soil particle and preventing liquefaction.SOLUTION: A ground injection device is constituted of an injection outer pipe 2 installed in a drilled hole 4 and an injection inner pipe 3 installed in the injection outer pipe 2. The injection outer pipe 2 comprises an outer pipe body 6 having a plurality of injection material discharge ports 6a in the pipe axial direction, a check valve 7 for closing the injection material discharge port 6a by being brought into close contact with an outer peripheral surface of the outer pipe body 6 and opening the injection material discharge port 6a by discharge pressure of an injection material injected via the injection inner pipe 3, a rubber slit tube 8 having a plurality of injection material injection slits 8a at an interval in the pipe axial direction, brought into close contact with the outer peripheral surface of the outer pipe body 6 and the check valve 7 and opening the injection material injection slit 8a by the discharge pressure of the injection material and a plurality of fixtures 9 installed at an interval in the pipe axial direction of the outer pipe body 6 on the outer periphery of the rubber slit tube 8 and partitioning the rubber slit tube 8 into a plurality of sections in the pipe axial direction.SELECTED DRAWING: Figure 1
【課題】土粒子の不均質地盤の強度増大、液状化防止等を行うのに適した地盤注入装置及び地盤注入工法を提供する。【解決手段】削孔4内に設置された注入外管2と注入外管2内に設置された注入内管3とから構成する。注入外管2は管軸方向に複数の注入材吐出口6aを有する外管本体6と、外管本体6の外周面に密着して注入材吐出口6aを閉じ、かつ注入内管3を通して注入される注入材の吐出圧によって注入材吐出口6aを開ける逆止弁7と、複数の注入材噴射スリット8aを管軸方向に間隔をおいて有し、外管本体6及び逆止弁7の外周面に密着し、かつ注入材の吐出圧によって注入材噴射スリット8aが開くゴムスリットチューブ8と、ゴムスリットチューブ8の外周に外管本体6の管軸方向に間隔をおいて取り付けられ、ゴムスリットチューブ8を管軸方向に複数の区間に区画する複数の固定具9を備えている。【選択図】図１
GROUND INJECTION DEVICE AND GROUND INJECTION METHOD
地盤注入装置および地盤注入工法
SHIMADA SHUNSUKE (Autor:in) / YAGUCHI SADAHIRO (Autor:in)
25.01.2018
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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