中文摘要：

因为卸掉可以影响一个岩石团斜坡的稳定性，卸掉的岩石质量是一个重要岩石工程问题。基于水力发电的工程原则，这研究集中于卸掉地区反映岩石团结构特征的分类。学习区域的地质的背景和斜坡结构被认为调查卸掉的过程的分发和变丑。量的索引根据形成机制和卸掉地区的地质的展览被分类。P波浪速度( V _P ),波浪速度的比率( K _V ,沿着到未经触动的岩石的P波浪速度的入口深度的测试P波浪速度的比率)，联合的洞的和每 2 米( S _t ),和开的关节的密度( D _t )为岩石作为量的索引被计算集体卸掉地区。在水坝地点的岩石团斜坡的卸掉的地区的特征是成功地坚定的。把质的数据与量的索引相结合的方法被发现为卸掉地区的斜坡的分类有效。

英文摘要：

Rock mass unloading is an important rock engineering problem because unloading may impact the stability of a rock mass slope. Based on hydroelectric engineering principles, this study focuses on the classification of unloading zones to reflect the rock mass structure characteristics. Geological background and slope structure of the study region were considered to investigate the distribution and deformation of the unloading process. Quantitative indices were classified according to the formation mechanisms and the geological exhibition of unloading zones. The P-wave velocity（V_P）, the ratio of the wave velocity（V_p） the ratio of the test P-wave velocity along the adit depth to the P-wave velocity of intact rock, the sum of joint openings every 2 meters（S_t）, and the density of open joints（D_t） were calculated as quantitative indices for the rock mass unloading zone. The characteristics of the unloading zone of rock mass slopes at the dam site were successfully determined. The method of combining qualitative data with quantitative indices was found to be effective for the classification of slope unloading zones.