我们在过去几十年地下防渗墙施工经验的基础上吸收了国内外先进技术，形成了一套独具特色的地下连续墙施工新工艺。现简介如下。l特种控们工艺利用BHV12液压抓斗和R－15全液压钻机建造地连墙和桩基的实践，摸索到了一些适合我国国情的挖精工艺。1．1深厚砂、卵石地基的两钻一抓 Based on our experience in the construction of underground cut-off walls in the past decades, we have absorbed advanced technologies at home and abroad and formed a unique new construction process for underground continuous walls. The brief introduction is as follows. l The use of BHV12 hydraulic grabs and R-15 full hydraulic drilling rigs to construct the jointing wall and pile foundations in the process of the special control technicians has explored some excavation techniques suitable for China’s national conditions. 1.1 deep sand, pebble foundation two drilling caught