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活页式吊桶钻头煤田地质１２９队曾铁军我队曾在山东挤南涤纶厂桩基工程施工中，按照设计：施工地层为一套河淤砂粘土层，上部夹砾石，下部夹砂卵石；－９．２５～１５．３４ｍ为强透水层，土质软化蠕变性大；－１５．３４～－１５．６５ｍ以下的老地层为桩尖持力层。桩孔...
Loose-leaf bucket drill bits coal field geology team 129 Zeng Tiejun Our team worked in the construction of the pile foundation of the South Dacron Factory in Shandong. According to the design, the construction stratum is a set of river silt clay layers, the upper gravel and the lower sand gravel. .25 ~ 15.34m is a strong water permeable layer, soil softening creep big; -15.34 ~ -15.65m below the old stratum for the pile holding layer. Pile hole ...