The cement can not hydrate sufficiently and uniformly at low temperature,so it′s easy to arouse rise the problem with lack of strength and appearing penetration cracks for tunnel concrete lining in cold regions during winter. According to the temperature control equation including low temperature phase transition,beginning with the study of influence of excavation time on temperature distribution of surrounding rock,considering the heat of hydration of concrete,the heat transfer law between surrounding rock and concrete lining was analyzed,and the influence of environment temperature in tunnel,heating temperature and time on the change rule of concrete temperature was studied. The results show that the influence scope of environmental temperature on the temperature of surrounding rock increased with the increase of excavation time;after a period of heated time,the temperature of surface and deep surrounding rock became higher than the middle′s,formed a temperature distribution of hot at two head,cold in the middle;the lowest temperature of concrete lining in 24 hours increased with increasing of heating time,heating temperature and environmental temperature. Based on this,a concise and practical heating time calculation formula was put forward. The in-situ results show that the goals were realized about the lining concrete can continuously and efficiently constructing,its surface has no crack and the actual strength>C30 by applying the proposed calculation formula.% 冬季寒区隧道二衬模筑混凝土施工由于低温水泥水化不充分、不均匀，极易出现强度不达标、表面出现贯穿性裂缝等问题。根据含低温相变岩体温度场控制方程，从研究开挖时间对围岩温度影响入手，在充分考虑混凝土水化热影响条件下，分析寒区隧道围岩与二衬混凝土热量迁移传递规律，研究隧道内环境温度、浇注时洞内加热温度和加热时间对二衬模筑混凝土温度影响规律。研究结果表明，随着开挖时间的增加，围岩温度受环境温度影响的范围逐渐增大；围岩被加温一段时间后，表面温度和深部围岩温度较高，中间温度较低，形成了两头热，中间冷的温度分布情况；二衬混凝土24 h内的最低温度随着加热时间、加热温度和环境温度的增加(升高)而升高。在此基础上，提出一种简洁、实用的加热时间计算公式。现场实施效果表明，应用该计算公式，可实现嘎隆拉隧道冬季低温环境条件下二衬模筑混凝土高效不间断施工、表面无裂纹且现场实测强度大于C30强度等级的目标。
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