تعداد نشریات | 158 |
تعداد شمارهها | 6,225 |
تعداد مقالات | 67,685 |
تعداد مشاهده مقاله | 114,963,734 |
تعداد دریافت فایل اصل مقاله | 89,637,726 |
روشهای تونل زنی در آستانه یک دگرگونی بزرگ | ||
نشریه دانشکده فنی | ||
مقاله 10، دوره 39، شماره 0 - شماره پیاپی 1000183، آذر 1357 اصل مقاله (2.61 M) | ||
نویسنده | ||
سید حسن بصیری* | ||
عنوان مقاله [English] | ||
RECENT MAJOR ADVANCES IN TUNNELING METHODS | ||
چکیده [English] | ||
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. | ||
آمار تعداد مشاهده مقاله: 1,365 تعداد دریافت فایل اصل مقاله: 697 |