Determination of reasonable carry step of semi-fixed crasher in strip mine based on least total cost method

The carry step of semi-fixed crasher is an important parameter for truck-belt conveyor combined transport in the strip mine.It will bring about significant impact for the whole transport system.The existing research achievement for The carry step of semi-fixed crasher have some shortage.The minimum cost method regard investment and operating costs as objective function，which include the cost of truck，belt conveyor，crasher，mineworkings and strip of rock.It thinks about change rule of operating costs in the whole mineing priod.Under the influence of the time value of capital，dynamic analysis and calculate with calculation program，analysis and compare all of the feasible program，and get the best economicrationality carry step of semi-fixed crasher.The minimum cost method analysis and compare all of the feasible influencing factor，and its result is more reasonable.through the actual engineering example，confirmed that the minimum cost method confirm carry step of semi-fixed crasher is feasible，and calculate result is reasonable.