Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
TBM tunnel advance grouting flow limiting method
The invention discloses a TBM tunnel advance grouting flow limiting method which comprises the following steps that S1, a round hole is formed in the arch portion of a TBM shield, a first long hole is formed in the tunneling direction from the round hole, grouting is conducted through the first long hole to block a crack, flow limiting is conducted on water above the arch portion, and surrounding rock is reinforced; s2, a second long hole is formed in the disc face of the TBM cutterhead, grouting is conducted towards the tunneling direction of the cutterhead through the second long hole to block cracks, water flow limiting is conducted on the cutterhead towards the tunneling direction, and surrounding rock is reinforced; and S3, after the grouting slurry in the S1 and the S2 is solidified, a grouting effect test is carried out, and the TBM continues tunneling after the test requirement is met. The method is beneficial for preventing and controlling water coming from the upper portion and reinforcing the arch surrounding rock to prevent collapse. And the second long holes are formed, so that water can be prevented and controlled, surrounding rock can be reinforced, and the cutterhead and the cutter can be prevented from being influenced during TBM tunneling. The method is suitable for safe construction of the relatively broken surrounding rock with the sudden water gushing risk, and on the premise that the risks of sudden water gushing, collapse, machine jamming and the like are effectively prevented, the construction efficiency is improved, and the engineering investment is saved.
本发明公开了一种TBM隧道超前注浆限流方法，包括如下步骤：S1.在TBM护盾的拱部开圆孔，从圆孔向掘进方向打第一长孔，通过第一长孔注浆封堵裂隙，对拱部以上的水体限流并加固围岩；S2.在TBM刀盘的盘面开第二长孔，通过第二长孔向刀盘朝向掘进方向注浆封堵裂隙，对刀盘朝向掘进方向水体限流并加固围岩；S3.待S1和S2注浆浆液凝固后，开展注浆效果测试，符合测试要求后TBM继续掘进。本方法有利于防控上方来水，且加固拱部围岩防止坍塌。设置第二长孔，既能防控水体、加固围岩，又能防止TBM掘进时刀盘和刀具受影响。本方法适用于具有突涌水风险的相对破碎围岩安全施工，在有效防范突涌水、塌方、卡机等风险的前提下，加快了施工效率，节约了工程投资。
TBM tunnel advance grouting flow limiting method
The invention discloses a TBM tunnel advance grouting flow limiting method which comprises the following steps that S1, a round hole is formed in the arch portion of a TBM shield, a first long hole is formed in the tunneling direction from the round hole, grouting is conducted through the first long hole to block a crack, flow limiting is conducted on water above the arch portion, and surrounding rock is reinforced; s2, a second long hole is formed in the disc face of the TBM cutterhead, grouting is conducted towards the tunneling direction of the cutterhead through the second long hole to block cracks, water flow limiting is conducted on the cutterhead towards the tunneling direction, and surrounding rock is reinforced; and S3, after the grouting slurry in the S1 and the S2 is solidified, a grouting effect test is carried out, and the TBM continues tunneling after the test requirement is met. The method is beneficial for preventing and controlling water coming from the upper portion and reinforcing the arch surrounding rock to prevent collapse. And the second long holes are formed, so that water can be prevented and controlled, surrounding rock can be reinforced, and the cutterhead and the cutter can be prevented from being influenced during TBM tunneling. The method is suitable for safe construction of the relatively broken surrounding rock with the sudden water gushing risk, and on the premise that the risks of sudden water gushing, collapse, machine jamming and the like are effectively prevented, the construction efficiency is improved, and the engineering investment is saved.
本发明公开了一种TBM隧道超前注浆限流方法，包括如下步骤：S1.在TBM护盾的拱部开圆孔，从圆孔向掘进方向打第一长孔，通过第一长孔注浆封堵裂隙，对拱部以上的水体限流并加固围岩；S2.在TBM刀盘的盘面开第二长孔，通过第二长孔向刀盘朝向掘进方向注浆封堵裂隙，对刀盘朝向掘进方向水体限流并加固围岩；S3.待S1和S2注浆浆液凝固后，开展注浆效果测试，符合测试要求后TBM继续掘进。本方法有利于防控上方来水，且加固拱部围岩防止坍塌。设置第二长孔，既能防控水体、加固围岩，又能防止TBM掘进时刀盘和刀具受影响。本方法适用于具有突涌水风险的相对破碎围岩安全施工，在有效防范突涌水、塌方、卡机等风险的前提下，加快了施工效率，节约了工程投资。
TBM tunnel advance grouting flow limiting method
一种TBM隧道超前注浆限流方法
ZHOU LUJUN (Autor:in) / TAO WEIMING (Autor:in) / ZHANG YONGPING (Autor:in) / ZHANG HUILING (Autor:in) / LI WEI (Autor:in) / LI RUI (Autor:in) / KUANG LIANG (Autor:in) / TAN YUNG-CHIEH (Autor:in) / ZHANG HONGWEI (Autor:in) / GAN GUANGYUAN (Autor:in)
12.03.2024
Patent
Elektronische Ressource
Chinesisch
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