论文部分内容阅读
一、施工环境与技术要求上饶市自来水公司在该市东部信江江畔建造一级泵站,委托我队为其伸向江中的取水口(吸水管)框架基础打钻孔灌注桩。施工地点水深2～2.5米.施工期水位落差1米左右。上部为第四系砂卵石层,土黄色、石英质粗细砂含量较高,砾石约占30％,砾径一般为10～60毫米,个别达200毫米。砂卵石层厚1.5米左右。下部为第三系红色砂岩。桩基孔技术要求:桩孔直径为400毫米(15个孔)和500毫米(3个孔),桩基进基岩(红色砂岩)中的长度为3米。
First, the construction environment and technical requirements Shangrao City Water Corporation in the eastern city of Shunjiang River to build a pumping station, commissioned by my team for its water into the river (suction pipe) framework for drilling bored piles. Construction site depth of 2 to 2.5 meters. The construction of water level drop about 1 meter. Upper Quaternary sand and gravel layer, khaki, quartz quality coarse sand content higher, gravel about 30%, the gravel diameter is generally 10 to 60 mm, each up to 200 mm. Thick layer of sand and pebbles about 1.5 meters. The lower part of the Tertiary red sandstone. Pile foundation technology requires that the pile holes have a diameter of 400 mm (15 holes) and 500 mm (3 holes), and the length of the pile into the bedrock (red sandstone) is 3 meters.