|
||||||
Группа 1 ТЭО-17 Дата: 13.10.2020г. Тема: Горное дело как наука.Группа 1 ТЭО-17 Дата: 13.10.2020г. Тема: Горное дело как наука. Практическое занятие №5 (Lesson 5) MINING AS A SCIENCE
1. Прочитайте текст обращая внимание на лексику прошлого занятия. Найдите в тексте абзац, в котором говорится о горных выработках и их назначении и переведите этот абзац письменно: GENERAL INFORMATION ON MINING As has been said, mining refers to actual ore extraction. Broadly speaking, mining is the industrial process of removing a mineral-bearing substance from the place of its natural occurrence in the Earth's crust. The term "mining" includes the recovery of oil and gas from wells; metal, non-metallic minerals, coal, peat, and other hydrocarbons from the earth. In other words, the work done to extract mineral, or to prepare for its extraction is called mining. The tendency in mining has been toward the increased use of mining machinery so that modern mines are characterized by tremendous capacities. This has contributed to improving working conditions and raising labour productivity. Mining can be done either as a surface operation (quarries or open-pits) or it can be done by an underground method. The problem of depth also affects the mining method. Working the deposit means the extraction of mineral. With this point in view a number of underground workings is driven in barren (waste) rock and in mineral. Mine workings vary in shape, location and function. Depending on their function mine workings are exploratory (разведочные), if they are driven with a view to finding mineral, and as productive (эксплуатационные) if they are used for the immediate extraction of useful mineral. The rock surfaces at the sides of workings are called the sides or the ribs. The surface above the workings is the roof in coal mining. The surface below is called the floor. The factors such as function, direct access to the surface, driving in mineral or in barren rock can be used for classifying mine workings. I. Underground workings: a) Long or deep may be: 1) vertical; 2) sloping (наклонные); 3) horizontal. b) Production faces, whose dimensions (размеры) depend on the thickness of the deposit being worked, and on the method of mining it. II. Opencasts.
2. Ответьте письменно на следующие вопросы: 1. What is mining? 2. What has contributed to the better working conditions of the miners? 3. What factors influence the choice of the mining method? 3. а) Найдите в правой колонке русские эквиваленты следующих слов и сочетаний слов. Запишите ответы в формате, к примеру, «1-5», указывая соответствия английского и русского выражения
b) Найдите в правой колонке английские эквиваленты следующих слов и сочетаний слов. Запишите ответы в формате, к примеру, «1-5», указывая соответствия русского и английского выражения выражения
ВАЖНО!Выполненные и сфотографированные (или отсканированные) задания отправить на страницу социальной сети Вконтакте до 19.10.2020г..
|
||||||
|