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在多年冻土地区修建铁路,为确保冻土路基的稳定,应使路基长期处于冻结状态。通过分析影响冻土路基温度场的主要因素,建立冻土路基模拟试验装置;在路基内部纵向布置调控管,进行冬季采集天然冷量和冬季采集天然冷量同时夏季辅助利用人工制冷冷量来调控冻土路基温度场的模拟试验。试验获得了采集天然冷量和采集天然冷量同时辅助利用人工制冷冷量调控路基时路基内部温度场的变化情况。试验结果表明,采集天然冷量同时辅助利用人工制冷冷量可有效地维护冻土路基的稳定。
In the permafrost areas to build railways, in order to ensure the stability of frozen soil roadbed, should make the roadbed frozen for a long time. By analyzing the main factors that influence the temperature field of the permafrost embankment, a simulation test device for the subgrade of permafrost is established. Longitudinal control pipes are arranged inside the embankment to collect the natural cold in winter and the natural cold in winter, and to assist the use of artificial cooling capacity in the summer Simulation test of temperature field of frozen soil roadbed. The changes of the temperature field inside the roadbed when the natural cooling capacity was collected and the natural cooling capacity was collected were also tested. The test results show that the stability of permafrost subgrade can be effectively maintained by collecting natural cold and assisting the use of artificial cooling capacity.