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由武警交通二支队担负的三公里无规聚丙稀浅色路面七月中旬在青藏公路斜-五段建成通车。这种路面不仅在青藏线、在全国也是第一次大面积铺筑使用。青藏公路斜水河至五道梁段位于海拔4500米的多年冻土地区。黑色路面通车四、五年来,由于部分地段路基高度未能满足保护冻土的要求,致使多年冻土上限下降,造成路基热融沉降变形,严重影响了行车,交通部第一公路勘察设计院根据多年的试验结果,决定铺筑无规聚丙稀混合料路面。这种路面具有
By the Armed Police Traffic Detachment 2, responsible for the three kilometer random polypropylene light-colored pavement in mid-July Qinghai-Tibet Highway Oblique - five opened to traffic. This road is not only in the Qinghai-Tibet line, the country is the first large-scale paved use. Qinghai-Tibet Highway diagonal to Wudaoliang section is located in the 4500 meters above sea level permafrost area. In four or five years since the roadbed height in some areas failed to meet the requirements of protecting frozen soils, the upper limit of permafrost decreased, causing the thermal settlement of roadbed deformation and seriously affecting the traffic, the First Highway Survey and Design Institute under the Ministry of Communications Years of test results, decided to pave a random polypropylene mixture road surface. This kind of pavement has