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(一)前言随着现代化工业、交通的迅速发展,需要建设各类复杂的大型建筑物、建筑群及大型交通枢纽,使得地下埋设物增多,地基基础施工条件日趋复杂。还有一些既成建筑物,由于使用条件的变更或因地质勘查不清等原因,需要在不影响结构安全的条件下,对地基进行加固处理。这些生产中的新问题的出现,有力地促进了地基加固技术的发展。近些年来新的地基加固技术不断涌现,旋喷法就是其中之一。七十年代初期,日本在化学注浆法的基础上,采用高压喷射流切割土体的技术,创造出别具一格的单管旋喷注浆法,即CCP工法,使化学注浆法进入了一个崭新的阶段。由于不
(I) Preface With the rapid development of modern industry and transportation, various complex large-scale buildings, buildings and large transport hubs need to be built, resulting in more buried underground structures and increasingly complex foundation construction conditions. There are some existing buildings, due to changes in conditions of use or due to unclear geological exploration and other reasons, the need to reinforce the foundation without affecting the structural safety conditions. The emergence of new problems in these production has effectively promoted the development of foundation reinforcement technology. In recent years, new technologies for foundation reinforcement continue to emerge. Rotary jet method is one of them. In the early 1970s, based on the chemical grouting method, Japan used high-pressure jet cutting technology to create a unique one-pipe rotary jet grouting method, CCP method, which enabled the chemical grouting method to enter a brand new The stage. Because no