以海屯高速公路为工程背景，结合该地区熔岩空洞地基的主要特点，提取该类型地基的稳定性影响因素，得到了符合海屯高速熔岩空洞地基特点的影响因素关系集及各级权重影响因素权重集，并以 K9＋680～K9＋800填方路基处一通道型空洞为例，系统介绍了运用二级模糊综合评判方法对该区域空洞地基进行稳定性评价的一般步骤，可将本方法进一步推广，以期为海屯高速公路熔岩地区高速公路建设提供指导。%The Hai-tun Highway was used to be an engineering background,in which the region’ s main features of lava empty foundation were combined with,and affecting factors of stability for the type of foundation were extracted,then factors set right relationships at all levels in line with the characteris-tics of high-speed Hai-tun foundation empty weight factors lava weight set were obtained,and K9 +680 ~K9 +800 fill embankment at a channel-type cavities was taken for example,general procedure for the use of secondary fuzzy comprehensive evaluation method carried out in the region void of foundation stability evaluation was descripted in full.This method can be further promoted in order to provide guidance for construction of Hai-tun highway in lava areas.
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