Pitching wedge

Due to the difference of depth of breast wall in the construction techniques of Zhang′s and Bai′s split grouting,the position of original split dam body is different in these two techniques,which will influence curtain shape of dam body,origination point of split grouting,the movement law of grouting fluid and mechanism of grouting.

由于白氏法及章氏法灌浆技术中的护壁管深浅不同,从而使初始劈裂坝体位置也不相同,必然对坝体的帷幕形态、灌浆起始劈裂点、浆液运动规律和灌浆机理等产生影响。