The effective adhesion of permeable base and asphalt pavement , good residence of scouring property of mixture and good drainable property are benefit for undersurface of pavement and permeable base course to keep good successive contact condition 大孔隙水泥稳定碎石排水基层和沥青面层的有效联结、混合料本身良好的抗冲刷性能和良好的排水性能，有利于沥青下面层和排水基层的层间接触条件维持在连续状态。
2.
11 can be a subsurface runoff parameterization with water storage and recharge based on the boussinesq - storage equation 625 written as 11 ee sineee sine . nnnnktaxbtnnuxktbtnsknnktbtaxnnuxktbtnsknnhxtwfnxhkbwfnxhkb letting t tend to infinity , one can get the steady aquifer function hs 13 : 1 sinee . uxaxnsksnnnfnhxxhkb multiplying through by the specific yield , f , and in - tegrating with respect to x between 0 and l gives the drainable storage associated with this steady - state free surface 下面考虑整个潜水面的一种稳定状态,也就是是对于任意一个恒定的入渗,当时间时潜水面将达到稳定的状态不再发生变化,这个时候显然有, 0 , . sntnt t , ssqnl也就是入渗补充量等于地下径流量
3.
By structural analysis and calculation for original highway structure without permeable layer , the critical modulus of base have been obtained which makes asphalt pavement fill different allowable stress criterion . by structural analysis and calculation for different highway structure with permeable layer , critical modulus of permeable base course are obtained to make asphalt pavement fill different allowable stress criterion . the paper also presents the tendency of structure response of different highway structure with drainable layers mainly depends on the thickness of asphalt pavement , the thickness and the critical modulus of permeable base 对于不设排水层的原路面结构，通过结构计算得出对应于不同的沥青面层容许应力值时所需的基层临界模量值；对于加设排水层的路面结构，通过结构计算得出对应于不同的沥青面层容许应力值时所需的排水基层临界模量值；加设排水层的路面结构的结构反应的变化趋势主要取决于沥青面层厚度、排水基层厚度和排水基层临界模量值。
