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原因分析：

 

1、造成水破坏的因素。沥青路面产生深刻会破坏的外因主要有交通量、交通组成、降雨量以及不尽完善的路面排水系统。进十年来，重载车辆特别是大幅度超载车辆日益显著增加，其后轴载从额定的100kn增加到180kn以上；轮胎冲气压力从额定的0.7mpa增加到0.9mpa以上。其作用的直接结果是路面裂缝的产生和扩展，路面开裂破损后，雨水下渗，产生冻涨、翻浆等水破坏，如果不及时养护维修，其破损面积