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RATIONALE FOR THE PARAMETERS OF BORE HAMMER FOR TUNNELING THE SERVICE ROADWAYS IN CAMBRIAN CLAYS

Abstract

The article deals with the issue of mechanization of operations during tunnelling the service roadways over argillaceous arrays in course of construction of subway networks. Design of the bore hammer is presented; whose construction allows to work in striking and striking-rotary modes. Results of experimental studies to determine the main parameters of suggested striking operating tool are given, and calculation is performed and the graph is built for productive capacity of the blade shield unit equipped with suggested operating tool.

D. A. YUNGMEYSTER AND A. I. ISAEV

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