在砂卵石地层中进行桩基作业时,经常会遇到成孔困难、钻进时易出事故。施工中,受到现场环境的限制,致使一些比较传统的相关工程施工的施工工艺难以进行,造成施工效率低,造价增加,工期延长,直接影响工程质量和经济效益。根据现场地质水文环境,选择适宜砂卵石层施工工艺,改进成孔设备,是提高工程项目质量和工程项目经济效益的有效方法。 In the sand and gravel stratum pile operations, often encounter difficulties forming holes, easy to accident when drilling. During construction, due to the restriction of on-site environment, the construction process of some relatively traditional related construction projects is difficult to carry out, resulting in low construction efficiency, increased cost and prolonged construction period, which directly affects project quality and economic benefits. According to the site geological hydrological environment, choose appropriate sand and gravel layer construction technology, improve the hole-forming equipment, is to improve project quality and project economic efficiency of the effective method.