The concept of construction period and calculation method

(1) During the construction preparation period, the mine shall complete the procurement of construction land, the construction personnel enter the site, start the construction preparation work on the site, and call the construction preparation period until the project is officially started.
(2) The construction period of the mine is completed from the official start of the project (the mine started the construction of the M-hole wellbore on the key route), and part of the work surface was completed, and after trial operation, the daily experience experienced after the trial production was officially put into production. The construction period for the mine.
(3) The completion period of the mine shall be completed from the date of official commencement of the project to the completion of the construction project according to the design regulations, and after the trial production, the time that is officially completed and delivered to the production after the trial operation is the mine completion period (or the construction period).
(Prison) The total construction period of the mine construction period and the mine completion period constitute the total construction period of the mine (or the total construction period).
The calculation method of the construction period
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