Читайте также:
|
|
Storing and Handling Explosives
Explosives and supplies should be stored in a dry, well-ventilated building that should be fire-proof if it contains only black powder but bulletproof if it contains high explosives. The magazine should be far enough from the nearest buildings to minimize danger to life or property from an accidental explosion. A stone or concrete magazine is undesirable because of the danger of flying missiles in case of an explosion. A brick or a wooden frame filled with sand, or a wood and iron magazine, is preferred.
At a mine, explosives and detonators should never be transported together. The amount of explosives taken into the mine and stored underground should be the minimum possible quantity. Only experienced men should be allowed to transport explosives and blasting supplies.
Caps may be carried in individual pockets in a canvas filler made to fit into a heavy leather sack. Explosives delivered at the collar of the shaft should be well insulated. The best way to carry explosives up a raise is to place them in a waterproof sack and to pull the sack up with a rope.
Reproduce the dialogue.
A. What kind of explosive is nitroglycerine? Is it used in our mines for blasting?
B. No, it is not, as it is very dangerous in handling.
A. Well, every explosive is dangerous as far as I know!
B. You cannot compare any explosive with nitroglycerine. I remember I have read a story from which it may be clearly understood what dangerous an explosive nitroglycerine is.
Long ago a company used nitroglycerine for drilling oil wells (скважина). And it was necessary to transport this explosive to the working place / it was done in specially equipped trucks, at night, along special roads. The driver had to be very careful. If he coughed loudly, nitroglycerine would blow out. If he ran over a stone in the darkness, nitroglycerine would blow out. That man did not return in time one night. And everybody at the office understood that the worst had happened. The bridge over which he had to go was blown out, and neither the truck nor body were found.
Part II: Tunneling
Unit 1. Tunnel Basic.
Read and try to memorize the words.
access | n | доступ |
carve | v | высекать из камня |
collapse | n | разрушение, падение |
continuous | a | непрерывный |
create | v | творить, создавать |
crown | n | наивысшая точка, вершина |
excavate | v | копать, рыть; добывать, проходить |
heading | n | штрек, горизонтальная выработка |
invert | n | дно |
load | n | нагрузка |
masonry | n | (каменная) кладка |
obstacle | n | препятствие |
passageway | n | проход, переход, выработка |
portal | n | главный вход, портал |
refer | v | относиться, ссылаться |
reliable | a | надежный |
remain | v | оставаться |
require | v | требовать |
setting | n | окружение |
support | v | крепить |
tube | n | труба, трубопровод |
vehicle | n | автомобиль, автотранспортное средство |
withstand | v | противостоять, выдерживать напряжение |
Read and recognize the following international words.
erosion, process, manual, vertical, project, construction, pressure, basic, geometry, arch, ideal, diameter
Дата добавления: 2015-10-31; просмотров: 222 | Нарушение авторских прав
<== предыдущая страница | | | следующая страница ==> |
Commercial Explosives | | | Read and translate the following word combinations. |