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毕节市地处黔西北 ,西临云南 ,北接四川。从毕节向相邻地区辐射的几条干线公路分别是 2 0世纪30年代和 5 0年代修建的泥结碎石路面 ,至今未做正规的基层设计和补强 ,加之长期养护投资低而形成只有 3～ 5 cm厚的泥结碎石面层。先天不足埋下强度不够 ,承载力低的隐患。随着市场经
Bijie City is located in northwest Guizhou, Yunnan, west, north Sichuan. Several major highways that radiate from neighboring Bijie to neighboring areas were clay-bonded gravel pavement constructed in the 1930s and 1950s, respectively. Up to now, no formal grassroots design and reinforcement have been done. Combined with the low long-term conservation investment, only 3 ~ 5 cm thick clay-bonded gravel surface. Insufficiently buried strength, low bearing capacity of the hidden dangers. With the market after