Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Water stopping method in cofferdam construction process
The invention discloses a water stopping method in the cofferdam construction process. A cofferdam is formed by enclosing a plurality of combined piles inserted into a hard rock stratum. The water stopping method comprises the following steps that a plurality of first-order holes are formed around the periphery of the cofferdam, and the first-order holes are drilled into the hard rock stratum from a riverbed; first grouting pipes are inserted into the first first-order holes, and permeation holes are formed in the first grouting pipes wrapped by a riverbed and the hard rock stratum; and cement-water glass mixed slurry is injected into the first grouting pipes, after the cement-water glass mixed slurry is injected into the first grouting pipes, the cement-water glass mixed slurry permeates and diffuses into the riverbed and the hard rock stratum around the first grouting pipes through the permeation holes, dicalcium silicate in cement is subjected to a hydrolysis reaction and a hydration reaction, calcium hydroxide is generated, calcium hydroxide reacts with water glass to generate gel-hydrated calcium silicate, the hydrated calcium silicate is solidified to form a cement stone body with higher strength and better water stability, so that the compaction and consolidation strength of the stratum on the periphery of the cofferdam is improved, and the purposes of water stopping and reinforcement are achieved. The cofferdam is applied to the field of bridge construction.
本发明公开了一种围堰施工过程中的止水方法，围堰通过多个插入硬岩层的组合桩围成，包括以下步骤：环绕围堰外围钻出多个一序孔，一序孔从河床钻进硬岩层；在一序孔中插入第一注浆管，被河床和硬岩层包覆的第一注浆管上设有渗透孔；在第一注浆管中注入水泥‑水玻璃混合浆液，由于水泥‑水玻璃混合浆液注入第一注浆管后，通过渗透孔向第一注浆管周围的河床以及硬岩层中发生渗透、扩散，水泥中的硅酸二钙发生水解反应和水化反应产生氢氧化钙，氢氧化钙与水玻璃发生反应，生成凝胶体—水化硅酸钙，水化硅酸钙凝固后形成强度较高、水稳定性较好的水泥结石体，从而使围堰外围的地层挤密，固结强度增高，达到止水和加固的目的，本发明用于桥梁建设领域。
Water stopping method in cofferdam construction process
The invention discloses a water stopping method in the cofferdam construction process. A cofferdam is formed by enclosing a plurality of combined piles inserted into a hard rock stratum. The water stopping method comprises the following steps that a plurality of first-order holes are formed around the periphery of the cofferdam, and the first-order holes are drilled into the hard rock stratum from a riverbed; first grouting pipes are inserted into the first first-order holes, and permeation holes are formed in the first grouting pipes wrapped by a riverbed and the hard rock stratum; and cement-water glass mixed slurry is injected into the first grouting pipes, after the cement-water glass mixed slurry is injected into the first grouting pipes, the cement-water glass mixed slurry permeates and diffuses into the riverbed and the hard rock stratum around the first grouting pipes through the permeation holes, dicalcium silicate in cement is subjected to a hydrolysis reaction and a hydration reaction, calcium hydroxide is generated, calcium hydroxide reacts with water glass to generate gel-hydrated calcium silicate, the hydrated calcium silicate is solidified to form a cement stone body with higher strength and better water stability, so that the compaction and consolidation strength of the stratum on the periphery of the cofferdam is improved, and the purposes of water stopping and reinforcement are achieved. The cofferdam is applied to the field of bridge construction.
本发明公开了一种围堰施工过程中的止水方法，围堰通过多个插入硬岩层的组合桩围成，包括以下步骤：环绕围堰外围钻出多个一序孔，一序孔从河床钻进硬岩层；在一序孔中插入第一注浆管，被河床和硬岩层包覆的第一注浆管上设有渗透孔；在第一注浆管中注入水泥‑水玻璃混合浆液，由于水泥‑水玻璃混合浆液注入第一注浆管后，通过渗透孔向第一注浆管周围的河床以及硬岩层中发生渗透、扩散，水泥中的硅酸二钙发生水解反应和水化反应产生氢氧化钙，氢氧化钙与水玻璃发生反应，生成凝胶体—水化硅酸钙，水化硅酸钙凝固后形成强度较高、水稳定性较好的水泥结石体，从而使围堰外围的地层挤密，固结强度增高，达到止水和加固的目的，本发明用于桥梁建设领域。
Water stopping method in cofferdam construction process
一种围堰施工过程中的止水方法
DENG XIAOFENG (Autor:in) / CHEN YONGGUANG (Autor:in) / WANG JIE (Autor:in) / CAO KE (Autor:in) / CHEN YANG (Autor:in) / RONG MIN (Autor:in) / ZHOU SHENGMIN (Autor:in)
06.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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