The presence of a gas component is an important feature of the frozen soils structure, which is currently practically not studied by laboratory methods during engineering surveys. To assess the gas content and dynamics of gas emission from frozen soils, the authors have developed equipment and a technique for triaxial and shear testing of samples at different temperatures and stress states. As a result of the research, it was revealed that the gas emission begins even with insignificant changes in the frozen soils temperature. The impact of external loads reduces the temperature at which gas emission begins and affects its dynamics when the temperature changes. The strength characteristics of frozen soils after gas emission change depending on the negative temperature and the value of volumetric compression pressure.

气体成分的存在是冻土结构的一个重要特征，目前在工程勘测中实际上还没有通过实验室方法进行研究。为了评估冻结土壤中的气体含量和气体排放动力学，作者开发了用于在不同温度和应力状态下对样品进行三轴和剪切测试的设备和技术。研究的结果表明，即使冻土温度变化不大，气体排放也开始发生。外部负载的影响会降低气体排放开始时的温度，并在温度变化时影响其动态。气体排放后的冻土强度特性取决于负温度和体积压缩压力的值。