本文结合雅泸高速公路桥梁工程实际,重点阐述了在特殊地形(如高陡边坡、浅覆盖层、紧邻民房公路、无法使用爆破等)条件下,方形截面桩基取芯成孔施工工艺、成孔过程控制以及在施工过程中应重点预防和避免的事故和对一些事故的处理措施,对类似的基础工程施工具有一定的参考价值。 Based on the actual project of Yalu Expressway Bridge, this paper emphatically elaborates the construction technology of the square cross-section pile core coring into holes under the special terrain (such as high-steep slope, shallow cover, close to the civil road, can not use blasting, etc.) Hole forming process control, as well as the accident prevention and avoidance during the construction process and the treatment of some accidents, have some reference value for similar basic construction.