During normal construction process, the friction force between shield and soil exhibited greater influence on surface deformation compared with bulkhead additive thrust.
在正常施工时，盾壳与土体之间的摩擦力对地面变形的影响远大于正面附加推力。
2
This new material has been used in making the heat shield placed on the front bulkhead in the Jie Fang CA141 trucks.