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在一般地区,灌缝时的地温,高于稳定温度,也高于年平均气温,如按稳定温度灌缝,(满足1)坝底日后要产生水平压应力,可能有些浪费;如按蓄水前地基在相当深度内平均温度进行灌缝,则可满足2。如图16,枞缝两边坝块的温度,只能控制其平均值,故严格满足这两种情况也是困难的。如果水库蓄水比较缓慢,在蓄水过程中,地温的分布,可能是上游略低于下游,其梯度比稳定温度要小。如果纵缝灌浆进度随蓄水位而逐渐上升,假定上游坝块的灌缝时的平均温度为x,下游坝块为y(基数),相应的地温
In general areas, when filling the ground, the ground temperature is higher than the steady temperature and higher than the annual average temperature. If the soil is filled at a steady temperature, (1) Pre-foundation at a considerable depth within the average temperature of the filling, you can meet 2. As shown in Fig. 16, the temperature of dams on both sides of the crest joints can only control the average value, so it is also difficult to strictly meet these two conditions. If the reservoir water is sluggish, the distribution of ground temperature may be slightly lower than the downstream in the process of water storage, and its gradient is smaller than the steady temperature. If the longitudinal grouting progress gradually increases with the water level, assuming that the average temperature of the upstream dam pouring seam is x, the downstream dam is y (base), the corresponding ground temperature