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井水温度观测是一项重要的地震前兆观测手段,旨在捕捉地震孕育过程中的应力-应变信息。水温固体潮效应作为地壳应力-应变信息的真实反映和地震前兆观测的干扰因素,具有重要的研究意义。本文首先依据对自流井中热状态的分析,认为自流井水温固体潮效应可能主要存在两种机制,即热传导机制和热对流机制;据此,推导出热传导机制中水温与固体潮体应变变化的定量关系;最后以流量相对较大的本溪自流井为例进行分析。结果表明,本溪井水温固体潮效应是热传导机制和热对流机制共同作用的结果,其中,热传导机制起主要作用。
Well water temperature observation is an important means of seismic precursory observation, which aims to capture the stress-strain information in the process of earthquake gestation. The solid tide effect of water temperature has important research significance as a true reflection of crustal stress-strain information and an interference factor of earthquake precursor observation. Based on the analysis of the thermal state in the artesian well, it is considered that there are mainly two mechanisms for the tidal effect of the water temperature in the artesian, namely, the thermal conduction mechanism and the thermal convection mechanism. Based on this, the quantitative relationship between the water temperature in the thermal conduction mechanism and the tidal volume changes In the end, the Benxi gravity flow with relatively large flow rate is taken as an example for analysis. The results show that the tidal effect of Benxi well water temperature is the result of the combined action of heat conduction mechanism and thermal convection mechanism. Among them, the heat conduction mechanism plays a major role.