Answer: 1. Whenever possible, use the inner row as much as possible; 2. Do not occupy fertile land, use less cultivated land, try to use hillsides, valleys and wasteland, and try to avoid the relocation of villages; 3. Without affecting the construction of the mine, arrange as close as possible to the stope to shorten the transport distance of the rock; 4. In order to prevent crushing, the dumping site should be selected in the lower direction of the ore body. If the ore body is in a reliable condition, it can also be placed outside the mining limit of the upper or the end of the ore body; 5. According to the topography, mining level elevation, dumping and other factors for comprehensive analysis, selected concentrated or scattered in the dumping site; 6. Must master the engineering geological and hydrogeological data of the dump site; 7. The dumping site should be located in the downwind side of the dominant wind in the residential area, away from the domestic water source and in the downstream of the living water source; 8. If the waste rock contains mineral components, it should be stored separately according to the mineral composition and grade, so as to facilitate the secondary recovery in the future; 9. The choice of the dump site should consider the possibility of reclamation and formulate a reclamation plan.
High strength steel tie rod are steel structural members made of carbon structural steel and alloy steel, processed by machining, heat treatment and surface anti-corrosion treatment, supplemented by adjusting sleeves, lock and joints etc. The steel tie rod are important components of steel structures for construction of giant, large span buildings and ship docks. They are mainly used for prestressed parts and large span buildings in construction projects. While the strength of the product is improved, but the plasticity index is not reduced, which satisfies the principle of using the same amount of strength in the architectural design. The tie rods, tie bars, tension rods and tension bars steel grades are specified as grade 460, grade 520, grade 550, grade 650, grade 785, grade 830, grade 930, grade 1080 etc.
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What is the principle of how to choose the location of the dump?
What is the principle of how to choose the location of the dump?