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高压定向喷射灌浆构筑防渗墙是近年来用于透水地基防渗处理的新技术。由于所用设备简单,施工操作方便,工效高,造价低,施工过程中少震动及嘈音,并从根本上解决了透水地基在进行水泥灌浆时遇到的不可灌问题,同时弥补了静压水泥灌浆难以进行小颗粒土层注浆加固的不足。我省北江大堤加固工程的刘寨水闸复建、芦苞水闸改建与西南水闸、西南堤段加固等单项工程的透水地基防渗处理,率先采用了三重管高压定向喷射水泥灌浆构筑防渗墙(简称高压定喷)这门新技术,并由广东省水电厅机械施工公司
High-pressure directional jet grouting to construct cutoff wall is a new technology used in seepage control of pervious foundation in recent years. Due to the simple equipment, easy construction and operation, high work efficiency, low cost, less vibration and noises during the construction process, and fundamentally solved the irrational problem encountered in the permeable foundation cement grouting, at the same time make up the static pressure cement Grouting is difficult to carry out the grouting reinforcement of small particle soil. Liu Bei sluice reinforcement of the Beijiang Levee reinforcement project in our province, impermeable treatment of pervious foundation of single sluice of sluice sluice and sluice of Southwest China and Southwest embankment section took the lead in adopting three-tube high-pressure directional injection cement grouting to construct cutoff wall Referred to as high-pressure spray) this new technology by the Guangdong Provincial Hydropower Construction Machinery Company