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Open caisson method for rotational flow well in high-water-level silt foundation soil
The invention discloses an open caisson method for a rotational flow well in high-water-level silt foundation soil, belongs to the field of open caisson construction, and aims to guarantee the open caisson construction quality and the rotational flow well safety and protection effect. Comprising the steps of 1, construction preparation; 2, a waterproof curtain is constructed, the waterproof curtain is a combined waterproof curtain and comprises stirring piles and Larsen steel sheet piles, the stirring piles and the Larsen steel sheet piles are arranged around the rotational flow well by a circle, the depth of the stirring piles is larger than the designed depth of the rotational flow well, and the Larsen steel sheet piles are pressed into the formed stirring piles one by one before the stirring piles are completely cemented and solidified; enabling the Larsen steel sheet pile to straddle a construction joint of the stirring pile and to be fixedly connected with the stirring pile into a whole; step 3, carrying out sinking operation on the barrel body of the rotational flow well; and 4, the bottom of the cyclone well is sealed. The stirring piles and the Larsen steel sheet piles are combined to form a closed waterproof curtain, so that the lateral rigidity and the waterproof performance of the waterproof curtain are improved, a good waterproof effect, a good guiding effect and a good safety protection effect are achieved, and sliding and deviation in a water-rich silt foundation are avoided.
本发明高水位淤泥质地基土内旋流井沉井方法，属于沉井施工领域，目的是保证沉井施工质量、旋流井安全及防护作用。包括步骤1、施工准备；步骤2、施工隔水帷幕，隔水帷幕为组合式隔水帷幕，包括环绕旋流井一周设置的搅拌桩和拉森钢板桩，搅拌桩深度大于旋流井设计深度，在搅拌桩完全胶结固化前逐个将拉森钢板桩压入已成型的搅拌桩内，使拉森钢板桩骑跨于搅拌桩的施工缝，与搅拌桩固结成一体；步骤3、旋流井的筒体沉入作业；步骤4、旋流井封底。搅拌桩和拉森钢板桩组合形成封闭的隔水帷幕，提高其侧向刚度和防水性能，起到良好的隔水效果、导向作用和安全防护效果，避免在富水淤泥质地基中发生滑动、偏移。
Open caisson method for rotational flow well in high-water-level silt foundation soil
The invention discloses an open caisson method for a rotational flow well in high-water-level silt foundation soil, belongs to the field of open caisson construction, and aims to guarantee the open caisson construction quality and the rotational flow well safety and protection effect. Comprising the steps of 1, construction preparation; 2, a waterproof curtain is constructed, the waterproof curtain is a combined waterproof curtain and comprises stirring piles and Larsen steel sheet piles, the stirring piles and the Larsen steel sheet piles are arranged around the rotational flow well by a circle, the depth of the stirring piles is larger than the designed depth of the rotational flow well, and the Larsen steel sheet piles are pressed into the formed stirring piles one by one before the stirring piles are completely cemented and solidified; enabling the Larsen steel sheet pile to straddle a construction joint of the stirring pile and to be fixedly connected with the stirring pile into a whole; step 3, carrying out sinking operation on the barrel body of the rotational flow well; and 4, the bottom of the cyclone well is sealed. The stirring piles and the Larsen steel sheet piles are combined to form a closed waterproof curtain, so that the lateral rigidity and the waterproof performance of the waterproof curtain are improved, a good waterproof effect, a good guiding effect and a good safety protection effect are achieved, and sliding and deviation in a water-rich silt foundation are avoided.
本发明高水位淤泥质地基土内旋流井沉井方法，属于沉井施工领域，目的是保证沉井施工质量、旋流井安全及防护作用。包括步骤1、施工准备；步骤2、施工隔水帷幕，隔水帷幕为组合式隔水帷幕，包括环绕旋流井一周设置的搅拌桩和拉森钢板桩，搅拌桩深度大于旋流井设计深度，在搅拌桩完全胶结固化前逐个将拉森钢板桩压入已成型的搅拌桩内，使拉森钢板桩骑跨于搅拌桩的施工缝，与搅拌桩固结成一体；步骤3、旋流井的筒体沉入作业；步骤4、旋流井封底。搅拌桩和拉森钢板桩组合形成封闭的隔水帷幕，提高其侧向刚度和防水性能，起到良好的隔水效果、导向作用和安全防护效果，避免在富水淤泥质地基中发生滑动、偏移。
Open caisson method for rotational flow well in high-water-level silt foundation soil
高水位淤泥质地基土内旋流井沉井方法
SUN CONGHUANG (author) / WANG MINGHUI (author) / XU HAIJUN (author) / WANG YONGKANG (author)
2023-07-14
Patent
Electronic Resource
Chinese
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