It refers to the plane and elevation control network established to meet the precise needs of the mine production and construction for spatial location. 2. Basic requirements for mining area (well) measurement control network (1) A mine should use a uniform coordinate and elevation system. (2) The elevation of the mining area should use the 1985 national elevation benchmark as much as possible. (3) The ground plane control network of the mining area can be established by means of triangulation, corner net, wire mesh, GPS positioning and other methods. (4) The ground elevation control network of the mining area can be established by leveling and triangular elevation measurement. The triangular elevation is divided into photoelectric ranging triangle elevation measurement and theodolite triangle elevation measurement. The first-level control network is generally established by the quasi-measurement method. It should be set up as a ring network. When it is encrypted, it should be arranged as an attachment route and a node network. Only in mountainous areas and hilly areas, it is allowed to be laid into a level line. PTFE Adhesive Tape, PTFE Tape,High Temperature Tape Jiangsu Zobon Conveyor Belt Co.,Limited , https://www.china-ptfefabric.com
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Concept and basic requirements of mining (well) measurement control network
1. The concept of mining area measurement control network