A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
TUNNEL CONSTRUCTION METHOD
PROBLEM TO BE SOLVED: To provide a tunnel construction method for ensuring suction of freezing expansion pressure, resulting in a shorter construction period for protection work and a lower cost.SOLUTION: In the method for excavating a natural ground G using a tunnel excavator 1, installing segments 3, 4 along the excavated surface of the natural ground G, and filling backfill material 6 in a cavity between each of the segments 3, 4 and the excavated surface of the natural ground G to construct a tunnel, bag bodies 10 are laid between the segment 4 and the natural ground G in a frozen section of the natural ground G to be frozen using a freezing technique, a freezing pipe 8 is inserted and arranged into the natural ground G and the bag bodies 10 are expanded after the tunnel excavator 1 passes through a tail packing 7, and brine is supplied into the freezing pipe 8 in the state of expanding the bag bodies 10 to freeze the natural ground G around the tunnel.
【課題】確実に凍結膨張圧を吸収でき、防護工の工期短縮、コストダウンを可能にするトンネル構築方法を提供する。【解決手段】トンネル掘進機１を用いて地山Ｇを掘削するとともに地山Ｇの掘削面に沿ってセグメント３、４を設置し、セグメント３、４と地山Ｇの掘削面の間の空洞に裏込め材６を充填してトンネルを構築する方法において、凍結工法を用いて地山Ｇを凍結する凍結区間では、セグメント４と地山Ｇの間に袋体１０を介在させ、トンネル掘進機１のテールパッキン７通過後に、凍結管８を地山Ｇに挿入配置するとともに袋体１０を膨張させ、袋体１０を膨張させた状態で凍結管８にブラインを供給してトンネル周囲の地山Ｇを凍結させる。【選択図】図１
TUNNEL CONSTRUCTION METHOD
PROBLEM TO BE SOLVED: To provide a tunnel construction method for ensuring suction of freezing expansion pressure, resulting in a shorter construction period for protection work and a lower cost.SOLUTION: In the method for excavating a natural ground G using a tunnel excavator 1, installing segments 3, 4 along the excavated surface of the natural ground G, and filling backfill material 6 in a cavity between each of the segments 3, 4 and the excavated surface of the natural ground G to construct a tunnel, bag bodies 10 are laid between the segment 4 and the natural ground G in a frozen section of the natural ground G to be frozen using a freezing technique, a freezing pipe 8 is inserted and arranged into the natural ground G and the bag bodies 10 are expanded after the tunnel excavator 1 passes through a tail packing 7, and brine is supplied into the freezing pipe 8 in the state of expanding the bag bodies 10 to freeze the natural ground G around the tunnel.
【課題】確実に凍結膨張圧を吸収でき、防護工の工期短縮、コストダウンを可能にするトンネル構築方法を提供する。【解決手段】トンネル掘進機１を用いて地山Ｇを掘削するとともに地山Ｇの掘削面に沿ってセグメント３、４を設置し、セグメント３、４と地山Ｇの掘削面の間の空洞に裏込め材６を充填してトンネルを構築する方法において、凍結工法を用いて地山Ｇを凍結する凍結区間では、セグメント４と地山Ｇの間に袋体１０を介在させ、トンネル掘進機１のテールパッキン７通過後に、凍結管８を地山Ｇに挿入配置するとともに袋体１０を膨張させ、袋体１０を膨張させた状態で凍結管８にブラインを供給してトンネル周囲の地山Ｇを凍結させる。【選択図】図１
TUNNEL CONSTRUCTION METHOD
トンネル構築方法
OKI TOMOAKI (author) / KANEMARU KIYOTO (author) / ASO TOSHIMITSU (author)
2016-01-21
Patent
Electronic Resource
Japanese
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