井壁内外力的观测研究是深井冻结研究课题的重要内容之一.本文主要介绍观测研究方法,井壁内外力观测结果及其分析、冻结压力的简易计算方法、双层钢筋混凝土井壁的受力状况以及合理的井壁计算方法.所得的结论是根据实测数据提出来的,需在实践中不断地修正. The observation and study of the internal and external forces in the wellbore is one of the important topics in deep well freezing research.This paper mainly introduces the observation and research methods, the observation results and analysis of the internal and external forces in the wellbore and the simple calculation method of the freezing pressure, Force condition and reasonable calculation method of borehole wall.The conclusions obtained are based on the measured data and need to be constantly revised in practice.