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运用线场分析方法对岩体内的断续节理在面内剪切荷载作用下进行弹塑性分析，求得节理线附近塑性区应力场和节理线上塑性区长度随外载的变化规律。通过与试验结果的分析对比，计算结果与试验结果［１，２］有较好的一致性。
The elastic-plastic analysis of discontinuous joints in rock mass under in-plane shear loading was conducted by using the method of line field analysis. The stress field in the plastic zone near the joint line and the rule of the plastic zone length along the external load were obtained. Through the comparison with the test results, the calculated results are in good agreement with the test results [1, 2].