Determination of the main flat and double lanes

Small and medium-sized mines that use rail transportation are mostly transported by monorail, and if necessary, the wrong lane can be added. Large-scale mines, especially large and extra-large mines developed by Changpingyu, have large sections for the main screen because of the large transportation equipment. If the rock is stable, the joints and cracks are small, and when the large structural belt is not passed, Single-track double-track flat rafts are used, otherwise double-lane monorail flats should be used. When using the double lane flat, when one flat fault occurs and the second can not continue to dig, the other flat raft can still be drilled intermittently, and the contact roadway can be cut in a suitable position to restore the construction of the accident flat. The construction of the Changping raft is crucial, and it is also conducive to transportation and ventilation during excavation, and is also easy to manage during production. However, the double lanes have a large amount of excavation and high investment. Therefore, after selection, it is necessary to make a decision after careful analysis and comparison.

When using railless transportation or belt conveyor and trackless combined transportation, due to the large section, double lane development is generally used. Small mines can also be developed with single lanes.