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一前言地下结构工程,往往涉及深层土壤的承载能力不足,而施工中又面临边坡坍滑、流砂等问题,在以往的地下结构工程施工中,引以为训的事故是不乏先例的。如何同时解决深层地基的加固和由此带来有利的施工条件,既能保证施工质量和降低工程成本,而又能缩短工期,一直是工程界梦寐以求的问题。我国铁道部自72年以来,开始研究单管旋喷技术,通过不断旋转已打入土内的钢管,
A foreword Underground structure engineering often involves insufficient carrying capacity of deep soil, and it faces problems such as slippery slopes and quicksands during construction. In the construction of underground structures, the incidents that led to training are not lacking precedents. How to solve the reinforcement of the deep foundation and the favorable construction conditions at the same time can not only ensure the construction quality and reduce the project cost, but also shorten the construction period, which has always been a problem that the engineering community has been pursuing. Since 72 years, the Ministry of Railways of our country has begun to study the single-pipe spin-spray technology and continuously rotate steel pipes that have been driven into the soil.