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鉴于正确判断出水原因及渗水来源是制定防渗加固措施的重要依据,将热流耦合方法引入到岩体裂隙渗水计算中,分析渗水来源、渗水量、渗漏路径及岩体温度等对渗水温度的影响程度。结合某实际工程导流洞首次过流时在附近出现的10个渗水点,应用该方法模拟由导流洞到出水点的渗水过程。结果表明,6个出水点的温度仿真结果与实测水温接近,佐证了渗水来自导流洞的推断;2个距导流洞较近的出水点仿真温度偏高,极有可能是真实的渗漏路径较长所致;另有2个位置较远的点仿真温度偏低,初步推测可能受周边温度较低的地下水影响。这说明热流耦合方法可应用于模拟岩体裂隙中渗水水温变化过程,为初步判断岩体内渗水来源提供了依据。
In view of correctly judging the cause of water outflow and the seepage source is an important basis for establishing anti-seepage reinforcement measures, the heat and fluid coupling method is introduced into the calculation of seepage of rock fissures and seepage source, seepage, seepage path and rock mass temperature influence level. Combined with 10 seepage points appearing in the vicinity of the first diversion tunnel of an actual project, this method is used to simulate the seepage process from the diversion tunnel to the water outlet point. The results show that the simulation results of the temperature at the six outlet points are close to the measured water temperature, which proves the inference of water seepage from the diversion tunnel. The simulated temperature of the two water outlets close to the diversion tunnel is high, which is most likely true leakage The path is longer; another two locations farther away from the simulation temperature is low, initially speculated that the ambient temperature may be affected by lower groundwater. This shows that the heat and fluid coupling method can be applied to simulate the process of seepage water temperature change in rock fissures and provide a basis for the preliminary judgment of the seepage water source in the rock mass.