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Earth excavation method for water-rich mucky soft soil deep foundation pit
An earth excavation method for a water-rich mucky soft soil deep foundation pit comprises the following steps that (1) an enclosure structure, a top beam, a first inner support and a trestle are constructed; (2) carrying out foundation pit earth excavation by adopting a layered and blocked excavation method; (3) when excavation is conducted to a silt soil layer, foundation pit excavation is conducted on the silt soil layer through an island type excavation method, and meanwhile earthwork is transported away from a foundation pit in cooperation with suction type excavation equipment on the trestle; and (4) the step (2) and the step (3) are repeated until the depth of the foundation pit is excavated to the preset pit bottom elevation. According to the method, efficient earth excavation can be conducted on the muddy soft soil deep foundation pit under the high water-rich condition, the construction period can be shortened, and the construction quality can be guaranteed.
一种富水淤泥质软土深基坑土方开挖方法，包括如下步骤：(1)施工围护结构、冠梁、第一道内支撑及栈桥；(2)采用分层分块开挖法进行基坑土方开挖；(3)当开挖至淤泥土层时，采用岛式开挖法在淤泥土层进行基坑挖土，同时配合栈桥上的抽吸式挖土设备将土方运离基坑；(4)重复步骤(2)和步骤(3)，直至将基坑的深度开挖至预设的坑底标高。本发明能够针对高富水条件下淤泥质软土深基坑进行高效的土方开挖，可缩短施工工期且保证施工质量。
Earth excavation method for water-rich mucky soft soil deep foundation pit
An earth excavation method for a water-rich mucky soft soil deep foundation pit comprises the following steps that (1) an enclosure structure, a top beam, a first inner support and a trestle are constructed; (2) carrying out foundation pit earth excavation by adopting a layered and blocked excavation method; (3) when excavation is conducted to a silt soil layer, foundation pit excavation is conducted on the silt soil layer through an island type excavation method, and meanwhile earthwork is transported away from a foundation pit in cooperation with suction type excavation equipment on the trestle; and (4) the step (2) and the step (3) are repeated until the depth of the foundation pit is excavated to the preset pit bottom elevation. According to the method, efficient earth excavation can be conducted on the muddy soft soil deep foundation pit under the high water-rich condition, the construction period can be shortened, and the construction quality can be guaranteed.
一种富水淤泥质软土深基坑土方开挖方法，包括如下步骤：(1)施工围护结构、冠梁、第一道内支撑及栈桥；(2)采用分层分块开挖法进行基坑土方开挖；(3)当开挖至淤泥土层时，采用岛式开挖法在淤泥土层进行基坑挖土，同时配合栈桥上的抽吸式挖土设备将土方运离基坑；(4)重复步骤(2)和步骤(3)，直至将基坑的深度开挖至预设的坑底标高。本发明能够针对高富水条件下淤泥质软土深基坑进行高效的土方开挖，可缩短施工工期且保证施工质量。
Earth excavation method for water-rich mucky soft soil deep foundation pit
一种富水淤泥质软土深基坑土方开挖方法
YU ZHIWEI (author) / REN BAOSHUANG (author) / WANG CHENG (author) / SONG ZHUOHUA (author) / HU QINGKANG (author) / ZHAI HAOBO (author) / MAO WUZHOU (author) / LI YUANFANG (author) / ZHAO YIPENG (author) / ZHAO XIAOBING (author)
2024-03-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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