1, the design route should be horizontal and vertical, and the slope and turning curve should be reasonable. Because it is a mountain road, some places may not meet the specifications, but we should consider driving convenience as much as possible. Note: Warning signs must be set in complex areas. Safety comes first.

2. Except for the filling section, the roadbed of the road is replaced with 40_ lime-fly ash soil, and the width of replacement is the same as that of lime-fly ash soil in the road structure. 0+633 ~ 0+780 is the filling section. When backfilling, the backfill thickness shall be within 1m and above 1m, and the backfill shall be made of plain soil and lime soil (10%) at intervals. After backfilling 1m plain soil, backfill 20_ lime soil to pavement structure layer.

3, grader leveling, drying and crushing: grader leveling, the surface should be flat, and there are rules of road arch.

4, after the completion of the mixture, should be timely maintenance, maintain a certain humidity, should not be too dry, too wet. The curing period is generally not less than 7 days, covered with geotextile and closed with a jade wrench. Mixing cement stabilized macadam, paving with loader on site, primary screening of grader, and construction of water stabilized layer.

5. Deal with the problem of uneven local lime quantity to ensure the uniform distribution of lime in the working face. 6. After the completion of water-stable layer rolling construction, plastic film must be laid for closed maintenance. Curing time meets the requirements. Strengthen watering.