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通过对坝体0+090桩号及0+145桩号施工期沉降及渗流监测成果的分析,初步分析了铜场水库大坝施工期在孔隙压力水和上游水位的共同作用下,心墙内渗透水位上升和沉降量明显偏大的原因。监测成果表明:①坝体施工期沉降量偏大但沉降监测成果符合一般变化规律;②心墙碾压铺料层厚度较厚,层间结合部压实密度较低,心墙压实度较低的部位有少量水渗入;③0+090与0+145断面的倾度为0.001%～0.067%,说明心墙沉降比较均匀。
Based on the analysis of settlement and seepage monitoring results of 0 +090 pile and 0 + 145 pile during the construction period, this paper mainly analyzed the effect of pore pressure water and upstream water level during the construction period of dam of Tongchang Reservoir. The reasons for the rising of infiltration water level and the obvious settlement are obvious. The monitoring results show that: (1) the settlement of the dam body is too large during the construction period, but the monitoring results of the settlement meet the general variation rule; (2) the thickness of the heart-wall roller compacted paving layer is thick, the compaction density of the joint between the layers is low, A small amount of water infiltrates in the low part; ③ The inclination of 0 +090 and 0 + 145 sections is 0.001% ~ 0.067%, which shows that the settlement of heart wall is more uniform.