The results indicate that using pressure build-up steady state pressure survey approach to calculate starting pressure gradient has obvious advantages with simple method and is theoretically correct.
结果表明：压力恢复稳态测压法求解启动压力梯度理论正确，方法简单，具有明显的优点。
2
If the blanket length reaches certain value, its hydraulic gradient is steady and the variety of seepage discharge also not obvious.
当铺盖长度达到一定值时，水力坡降稳定且渗流量的变化也不明显。
3
Research shows, on mountain highway with varied falling gradient, the continuous brake mode affected together can make vehicle travels steady in the speed range.