Author(s): Jinjie Zhang
Linked Author(s):
Keywords: Grab-drill excavating trench process; Thin diaphragm; Excavating trench; Ogee joint
Abstract: In this paper, the performance of GDW-3 excavating special machine is introduced briefly, and the application of the construction technique for thin diaphragm wall by grab-drill excavating trench process with rope grab is systematically discussed. It has been testified that the GDW-3 excavating machine for thin diaphragm wall has preferable cost performance in many practical engineering, especially in Qiuwan dike section in Hubei province, which is the one of most complicate anti-seepage embankment in China. Under the complicated geological stratum conditions, the technique of thin diaphragm wall by grab-drill excavating trench process with light grab excavator should be recommended, which can be taken as supplement for the method of excavating trench by directly grab excavating process. Ogee joint used to connect with thin trench segment is feasible at site, which can save cost and time in junction treatment.
Year: 2002