recent major advances in tunneling methods
نویسندگان
چکیده
the conventional tunneling procedures for example drilling, charging, blasting, loading and supporting, are highly developed. new tunneling machines have recently come into operation and others are under construction or development. impactors are used in large numbers in the coal mining industry. face-heading machines are successfully used in new tunneling procedures in both soft and medium-hard rocks. the so-called full facer machines which are under development have considerable potential. in this paper some different types of tunneling machines are described and particular attention is paid to the latest development, the water-jet tunneling machine.
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عنوان ژورنال:
نشریه دانشکده فنیجلد ۳۹، شماره ۱۱، صفحات ۰-۰
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