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开展了pH值、温度等环境要素对隧道岩样溶蚀影响的实验。结果表明温度对隧道岩样溶蚀影响呈现非单向特征,25℃时溶蚀率最大。pH值对岩样溶蚀率影响最为明显,酸性条件是中性、碱性条件下溶蚀率的20~400倍。相比较而言,在隧道较常见温度与pH值条件下,隧道出口段岩样比其他位置更易被溶蚀。
Carried out the pH, temperature and other environmental factors on the impact of tunnel rock samples experiment. The results show that the temperature has a non-unidirectional characteristic on the dissolution of tunnel rock samples, and the dissolution rate is the highest at 25 ℃. The pH value has the most obvious influence on the dissolution rate of rock samples. The acidic conditions are 20 ~ 400 times of the dissolution rate under neutral and alkaline conditions. In contrast, the tunnel exit section is more susceptible to erosion than the rest of the tunnel at tunnel temperatures and pH.