Conclusions
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1.
For the free motion of the monitor in the cut being formed, the axis of the jet-forming nozzle should have an incline to the horizon. It was 35–45° for the range of variation in parameters under investigation.
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2.
The temperature of the working fluid does not affect the failure rate of the frozen soils.
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3.
The relationship between the pressure and cutting rate is nonlinear owing to a drop in the dynamic pressure of the jet in the fluid medium that surrounds it.
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Literature cited
B. S. Fedorov, L. R. Petrosyan, and I. V. Rotaru, "Use of a high-pressure hydraulic jet to install foundations in the north," Osn., Fundam. Mekh. Gruntov, No. 2 (1983).
F. Erdmann-Yesnitzer, A. M. Hassan, and H. A. Louis, "A study of the oscillation effects on the cleaning and cutting efficiency of high-speed water jets," Third International Symposium on Jet Cutting Technology, Paper C3, Chicago (1976), pp. 27–41.
T. Yahiro and H. Yoshida, "On the characteristics of a high-speed water jet in the liquid and its utilization on induction grouting method," Second International Symposium on Jet Cutting Technology, Cambridge (1974), Paper 64, pp. 41–63.
Additional information
Scientific-Research Institute of Bases and Underground Structures. Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 5, pp. 25–27, September–October, 1985.
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Petrosyan, L.R., Mosin, V.D. Failure of frozen soils by high-pressure hydraulic jets in trench and pit construction. Soil Mech Found Eng 22, 194–197 (1985). https://doi.org/10.1007/BF01711564
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DOI: https://doi.org/10.1007/BF01711564