5[2]Liu Y, Just, G.. Changing Drilling Technology for Coal Seam Exploration and Gas Recovery, In: Proc. Australia First Annual Conference, 1994, Brisbane, Australia.
6CROW S C. A theory of hydraulic rock cutting[J]. International Journal of Rock Mechanics and Mining Science, 1973, (10) :567 - 584.
7REHBINDER G, Some aspects of the mechanism of erosion of rock with a high speed water jet paper EI[R].Proc 3rd International Symposium on Jet Cutting Technology, Chicago II,1976.
8REFIBINDER G. Erosion resistance of rock[R]. Proc 4th Int Symp on Jet Cutting Technology, BFIEA Fluid Engineering, Kent, England, 1978.
9DANIEL L M, ROWLANDS R E, LABUS T J. Photoelastic study of water jet impact [R]. Proc 2nd Int Symp Jet Cutting Tech, Cambridge, UK, 1974.
10DANIEL L M. Experimental studies water jet impact on rock and rocklike materials[R]. Proceeding of the 3rd International Symposium on Jet Cutting Technology, Chicago, USA, 1976.