Деловой английский язык. Енютина А.А. - 16 стр.

                                       16


                                   TEST № 9

     Прочитайте текст и письменно выполните задания к нему.

                            Drainage and pumping

      Mine working place must be kept dry. Water can flow into the underground
mine from the water-bearing strata or from the surface through the fissures and
voids in the rock. Flushing water from rock drilling also accumulates in drift
bottoms. Surface water is kept out of the shaft by building around the shaft sills
of the material taken out during sinking. Ground water leaks continuously,
through fissures in the rock. Ditches are dug with some slope, the water col-
lected and channeled by self-flowing to water basins at lower levels. The quan-
tity of the mine waters changes with season of the year and with the advancing
of mining operation. In the mines with the threat of flooding, the special isolat-
ing measures are taken.
      There is a pump station with its high-pressure pumps, which lifts under-
ground water to surface through the pipe system. The water pumped from the
shaft is carried far away from the shaft to prevent the water from returning. Wa-
ter within a comparatively short distance from the surface can be drained from
the shaft by sinking a well or small shaft adjacent to the main shaft. Sump is
a water basin at the bottom of a shaft, in which water is also collected and from
which it is pumped.

                                    Задания

    1. Переведите текст на русский язык.
    2. Ответьте на вопросы к тексту:
    a) Where from can water flow into the underground mine?
    b) How do ground waters move down to the water basin?
    с) What is sump?
    3. Переведите на английский язык следующие предложения:
    a) Осушение рудника – очень важная часть горных работ.
    b) Воды поступают в рудник через трещины и пустоты породы.
    с) Источники воды в руднике – поверхностные воды, грунтовые воды
и промывные воды.