For the permanent ramp haulage system, the side of slope with haulage ramp is permanent, and another side is a working slope.
举一反三
- The development haulage system is divided into the permanent ramp and .
- Which of the following is not a common type of rise coal haulage ( )? A: Pipeline haulage B: Belt conveyor haulage C: Tramcar haulage D: Autogenous haulage
- （ ） refers to the channel on a steep slope, and it is also known as the suspended ditch. A: Chute B: side ditches C: seepage ditch D: underdrain
- The horizontal or near horizontal part of a step is called( ). A: Slope B: Slope angle C: Working face D: Flat plate
- A type-1 system has a zero steady-state tracking error to a ramp input.