Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for cleaning mortar consolidation layer of oversized shield shell in tunneling process
The invention relates to a method for cleaning a mortar consolidation layer of a super-large shield shell in the tunneling process. The method comprises the following steps that the underground position of a shield tunneling machine is measured and determined; drilling and sampling on the ground to obtain the thickness and range of a mortar consolidation layer; a steel sheet pile is driven into the stratum through a pile driver, and the gap between the lower end of the steel sheet pile and the arc shell on the upper portion of the shield tunneling machine is 1-3 cm; polyurethane is injected in front of and behind the mortar consolidation layer until water is stopped and isolated in front of and behind the mortar consolidation layer; the shield tunneling machine is pushed forwards, the pile driver vibrates all the steel sheet piles in sequence, the mortar consolidation layer is shattered by the steel sheet piles firstly, and then the mortar consolidation layer is scraped off from the shield tunneling machine; bentonite is injected after the mortar consolidation layer is separated from the steel sheet pile, and mortar is prevented from being coagulated again; the shield tunneling machine continuously advances, and the residual mortar consolidation layer is gradually scraped off through stratum friction force; after the shield tail of the shield tunneling machine completely leaves the steel sheet pile, the steel sheet pile is pulled out, and the pile pit is backfilled. The method has the effects of low cost, high efficiency and high safety in solving problems.
本发明涉及一种掘进过程中超大盾构壳体砂浆固结层清理方法，其包括如下步骤：测量确定盾构机在地下的位置；地面钻孔取样，获得砂浆固结层的厚度及范围；通过打桩机向地层中打入钢板桩，所述钢板桩的下端与盾构机上部圆弧外壳间隙1‑3cm；砂浆固结层前后范围注入聚氨酯，直到砂浆固结层前后止水隔离后停止注入；盾构机向前推进，打桩机依次震动所有钢板桩，使得钢板桩先震碎砂浆固结层，再将砂浆固结层从盾构机上刮下；砂浆固结层脱离钢板桩后注入膨润土，防止砂浆再次凝结；盾构机持续推进，剩余砂浆固结层通过地层摩擦力逐渐刮除；盾构机盾尾完全离开钢板桩后，拔出钢板桩，回填桩坑。本发明具有低成本、高效率、高安全解决问题的效果。
Method for cleaning mortar consolidation layer of oversized shield shell in tunneling process
The invention relates to a method for cleaning a mortar consolidation layer of a super-large shield shell in the tunneling process. The method comprises the following steps that the underground position of a shield tunneling machine is measured and determined; drilling and sampling on the ground to obtain the thickness and range of a mortar consolidation layer; a steel sheet pile is driven into the stratum through a pile driver, and the gap between the lower end of the steel sheet pile and the arc shell on the upper portion of the shield tunneling machine is 1-3 cm; polyurethane is injected in front of and behind the mortar consolidation layer until water is stopped and isolated in front of and behind the mortar consolidation layer; the shield tunneling machine is pushed forwards, the pile driver vibrates all the steel sheet piles in sequence, the mortar consolidation layer is shattered by the steel sheet piles firstly, and then the mortar consolidation layer is scraped off from the shield tunneling machine; bentonite is injected after the mortar consolidation layer is separated from the steel sheet pile, and mortar is prevented from being coagulated again; the shield tunneling machine continuously advances, and the residual mortar consolidation layer is gradually scraped off through stratum friction force; after the shield tail of the shield tunneling machine completely leaves the steel sheet pile, the steel sheet pile is pulled out, and the pile pit is backfilled. The method has the effects of low cost, high efficiency and high safety in solving problems.
本发明涉及一种掘进过程中超大盾构壳体砂浆固结层清理方法，其包括如下步骤：测量确定盾构机在地下的位置；地面钻孔取样，获得砂浆固结层的厚度及范围；通过打桩机向地层中打入钢板桩，所述钢板桩的下端与盾构机上部圆弧外壳间隙1‑3cm；砂浆固结层前后范围注入聚氨酯，直到砂浆固结层前后止水隔离后停止注入；盾构机向前推进，打桩机依次震动所有钢板桩，使得钢板桩先震碎砂浆固结层，再将砂浆固结层从盾构机上刮下；砂浆固结层脱离钢板桩后注入膨润土，防止砂浆再次凝结；盾构机持续推进，剩余砂浆固结层通过地层摩擦力逐渐刮除；盾构机盾尾完全离开钢板桩后，拔出钢板桩，回填桩坑。本发明具有低成本、高效率、高安全解决问题的效果。
Method for cleaning mortar consolidation layer of oversized shield shell in tunneling process
掘进过程中超大盾构壳体砂浆固结层清理方法
CHEN MINGJIANG (Autor:in) / LIU XIAOLONG (Autor:in) / HUANG ZHENG (Autor:in) / WEN KEHAN (Autor:in) / ZHANG SHIHAI (Autor:in) / DENG JUN (Autor:in) / PENG FEI (Autor:in) / LU SHUAI (Autor:in) / ZHAO YANLIN (Autor:in) / WU JIAHAO (Autor:in)
21.07.2023
Patent
Elektronische Ressource
Chinesisch
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