On the case of Surface Erosion on the Steep Forest Road (II). On a Method of Maintenance-Design for Steep Primary Road

1989

8 Abb., 2 Lit. Ang.

Unselbständiges Werk

6796

200062208

This is a study on a method to find the best choise of psitions for paving or setting cross-ditches in a steep earth road. Based on a condition of surface erosion on a steep forest road, we tried to minimize the cost for road (the cost for construction and maintenance of the road) by choosing one alternative, for each unit segment of equal length in the road, among three as follows: 1. This unit segment should be paved. 2. A cros dicth should be set on this unit segment. 3. Either paving or cross ditch isn't necessary for this unit segment. Under some limiting conditions, the optimal solution could be found with small computation load. From the result of simulation, it was found that the better result of computation could be expected by segmenting the road into the unit segments of the shorter length.