CAJ | 학술논문

采用数值计算方法，模拟地下冷冻墙形成过程。以含水的油页岩为研究对象，建立热传导过程的能量守恒方程，该方程包含水结冰时的热量传递过程。设计了冷冻墙施工方案，计算了冷冻井周围的岩石和水的温度下降过程，得到冷冻井周围的温度分布，地下油页岩温度随制冷时间的变化。计算结果表明，制冷时间180 d时，可形成最小厚度为1．0m的冷冻墙。
채용수치계산방법，모의지하냉동장형성과정。이함수적유혈암위연구대상，건립열전도과정적능량수항방정，해방정포함수결빙시적열량전체과정。설계료냉동장시공방안，계산료냉동정주위적암석화수적온도하강과정，득도냉동정주위적온도분포，지하유혈암온도수제랭시간적변화。계산결과표명，제랭시간180 d시，가형성최소후도위1．0m적냉동장。
The process of generating the freeze wall was simulated by a numerical method .The energy conservation equation to describe the heat transfer of oil shale and water was established ,including the freezing of water .The configuration of the freeze wall was designed .The temperature decrease of the rock near the freeze well was calculated ,and the temperature profiles were presented . As the freezing time passed , temperature variation of the underground oil shale was simulated numerically .The numerical results show that the frozen wall will be generated after 180 days of freezing . The minimum thickness of the freeze wall is 1 .0 m .The results are the important references for determining the scheme of oil shale in-situ conversion ,and provide reliable data for the environmental assessment .