Abstract:

The grooving construction of steel arch installation grooves of existing railway tunnel lining by manual concrete cutting machine and chiseling machine is characterized by low mechanization degree and slow speed, which cannot meet the requirements of rapid treatment of tunnel diseases and construction safety. Hence, the current situation of grooving methods and equipment for tunnel disease treatment in China and abroad are investigated. Based on the brittle fracture mechanism of diamond saw blade cutting concrete, the method of grooving at one time with combined cutter is put forward; the grooving technology of water jet is put forward; and the multitime grooving technology of cutter and grooving machine with circular track is also put forward. Based on the 3 grooving methods mentioned above, the suggestions on the development of grooving equipment are put forward.

Key words: existing railway line, tunnel, disease treatment, steel arch, grooving method, grooving machine