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在 0 .5～ 1 .5GPa,1 60～ 2 55℃条件下动态监测了石膏脱水过程中电导率随时间的变化。实验结果表明 ,脱水过程中电导率随时间的变化分两个阶段 :第一阶段电导率随时间的变化速率可间接地反映脱水反应的速率 ;第二阶段反映了流体中溶解离子的增多。相角随时间的变化可动态反映释放的水在矿物颗粒边缘的存在及连通性。电导率法是适用于含水矿物脱水过程动态监测及脱水过程中水的分布、迁移等动力学过程就位研究的有效方法。
The conductivity of gypsum was dynamically monitored over time at 0 .5 ~ 1 .5GPa and 1 60 ~ 2 55 ℃. The experimental results show that the conductivity changes with time in the dehydration process is divided into two stages: the first stage conductivity rate over time can indirectly reflect the rate of dehydration reaction; the second stage reflects the increase of dissolved ions in the fluid. The phase angle changes over time can dynamically reflect the presence and connectivity of released water at the edge of the mineral particles. Conductivity method is suitable for dynamic monitoring of water-bearing mineral dehydration process and dehydration process of water distribution, migration and other dynamic process in place to study an effective method.