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既有东北铁路牙林线、嫩林线多年冻土区路基病害严重,借鉴青藏铁路建设的成功经验,利用热棒、保温板及保温护道等综合防治措施进行了路基病害整治。针对牙林线北段试验工程,利用观测断面实测地温资料对试验段综合防治措施效果进行分析。分析表明:防治措施效果明显,有效控制了路基下伏多年冻土地温,冻土上限明显抬升,对保证铁路正常运营发挥了积极作用。
Both the railway line of the Northeast Railway and the permafrost zone of the Ten-Lin Line have serious roadbed failures. Using the successful experiences of the Qinghai-Tibet Railway construction, comprehensive treatment measures such as hot sticks, thermal insulation boards and thermal insulation roads were taken to improve the roadbed disease. Aiming at the northern section of Yaolin line, the effect of comprehensive prevention and cure measures in the experimental section is analyzed by using the measured ground temperature data. The analysis shows that the prevention and control measures have obvious effect and effectively control the ground temperature of permafrost under the embankment and obviously raise the upper limit of permafrost so as to play an active role in ensuring the normal operation of the railway.