Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Environment-friendly jet grouting drill bit for constructing large-diameter high-pressure jet grouting pile and construction technology of environment-friendly jet grouting drill bit
The invention discloses an environment-friendly jet grouting drill bit for constructing a large-diameter high-pressure jet grouting pile and a construction technology of the environment-friendly jet grouting drill bit, and relates to the technical field of high-pressure jet grouting pile construction. In the downward drilling process of the jet grouting drill bit, high-pressure water flow and air flow are jetted through a plurality of nozzles, surrounding rock and soil are subjected to repeated jet grouting and stirring, light slurry which is rich in air and low in specific gravity is formed and can overflow and be discharged along a pile hole under the action of air lift, and therefore the surrounding rock and soil are discharged in the downward drilling process of the jet grouting drill bit. And then high-pressure cement paste is jet-grouted through the jet-grouting drill bit from bottom to top through the expansion nozzles on the expansion assembly frame, so that the high-pressure cement paste is mixed with rock and soil in a larger range, and a pile body of the high-pressure jet-grouting pile is formed through filling and compaction.
本发明公开了一种施工大直径高压旋喷桩的环保型旋喷钻头及其施工工艺，涉及高压旋喷桩施工技术领域。所述旋喷钻头在下行钻进过程中，通过数个喷嘴喷射高压水流及空气流，对周围的岩土反复旋喷搅拌，形成富含空气的较轻比重的轻质泥浆，能够在气举作用下沿桩孔上溢排出，从而在所述旋喷钻头下行钻进过程中，使其周围的的岩土排出。然后通过所述旋喷钻头由下至上，通过扩展组架上的扩展喷嘴旋喷高压水泥浆，使高压水泥浆与更大范围内的岩土混合，通过填充和挤密形成高压旋喷桩的桩体。
Environment-friendly jet grouting drill bit for constructing large-diameter high-pressure jet grouting pile and construction technology of environment-friendly jet grouting drill bit
The invention discloses an environment-friendly jet grouting drill bit for constructing a large-diameter high-pressure jet grouting pile and a construction technology of the environment-friendly jet grouting drill bit, and relates to the technical field of high-pressure jet grouting pile construction. In the downward drilling process of the jet grouting drill bit, high-pressure water flow and air flow are jetted through a plurality of nozzles, surrounding rock and soil are subjected to repeated jet grouting and stirring, light slurry which is rich in air and low in specific gravity is formed and can overflow and be discharged along a pile hole under the action of air lift, and therefore the surrounding rock and soil are discharged in the downward drilling process of the jet grouting drill bit. And then high-pressure cement paste is jet-grouted through the jet-grouting drill bit from bottom to top through the expansion nozzles on the expansion assembly frame, so that the high-pressure cement paste is mixed with rock and soil in a larger range, and a pile body of the high-pressure jet-grouting pile is formed through filling and compaction.
本发明公开了一种施工大直径高压旋喷桩的环保型旋喷钻头及其施工工艺，涉及高压旋喷桩施工技术领域。所述旋喷钻头在下行钻进过程中，通过数个喷嘴喷射高压水流及空气流，对周围的岩土反复旋喷搅拌，形成富含空气的较轻比重的轻质泥浆，能够在气举作用下沿桩孔上溢排出，从而在所述旋喷钻头下行钻进过程中，使其周围的的岩土排出。然后通过所述旋喷钻头由下至上，通过扩展组架上的扩展喷嘴旋喷高压水泥浆，使高压水泥浆与更大范围内的岩土混合，通过填充和挤密形成高压旋喷桩的桩体。
Environment-friendly jet grouting drill bit for constructing large-diameter high-pressure jet grouting pile and construction technology of environment-friendly jet grouting drill bit
一种施工大直径高压旋喷桩的环保型旋喷钻头及其施工工艺
TIAN YUHANG (Autor:in) / TIAN JINGGANG (Autor:in)
21.03.2023
Patent
Elektronische Ressource
Chinesisch
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