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触变粘土泥浆在地下及基础工程中的应用,是近代施工技术的重要发展。它对于改善和解决一般传统施工方法难以克服的技术困难,具有极大的优越性。用触变粘土泥浆作为护壁材料,维护在饱和流动性软土中钻孔孔壁的稳定,避免坍孔,使钻孔可达深度得到重大突破。在顶管推进工程中,用以隔离土拱、润滑管壁,可以大大减小顶推力,加大分段顶进长度,从而减少顶进工作坑的设置,改善接力工艺,加快进度,可以取得良好的技术经济效果。在沉井沉箱工程中,设置于井(箱)壁与土壁之间的触变泥浆隔离
Thixotropic clay mud in underground and basic engineering applications, is an important development of modern construction technology. It has great advantages for improving and resolving the technical difficulties that are difficult to overcome in the traditional traditional construction methods. Thixotropic clay slurry is used as the material of the retaining wall to maintain the stability of the hole wall of the borehole in the saturated fluidity soft soil so as to avoid the collapse of the hole and make a major breakthrough in the reachable depth of the borehole. In the pipe jacking project, for the isolation of soil arching, lubrication of pipe wall, can greatly reduce the thrust, increase the length of sub-heading, thereby reducing the jacking work pits set to improve the relay technology to speed up the progress can be obtained Good technical and economic results. In caisson caisson construction, thixotropic mud is provided between the wall of the well (box) and the soil wall