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以重庆市金佛山水利工程取水口裂隙岩质高边坡为例,从边坡形态规模、变形破坏机理及安全性的角度,结合开挖加固过程中的位移、潜在滑动面、剪应变等的变化,研究了裂隙岩质高边坡在分级开挖、边开挖边加固施工过程中的岩体变形及其稳定性。结果表明,边坡在分级开挖、加固施工过程中的整体安全性及边坡位移满足《水利水电工程边坡施工技术规范》要求;加固完成后边坡的可能破坏形式为深层滑动,滑弧上部为拉裂段、中部为直线段,坡脚为圆弧段;第一级开挖后边坡顶部位移发生突变,但在接下来的施工过程中变形逐渐趋于稳定;加固后边坡安全系数明显提高,边坡整体是稳定的。
Taking the high fissure rock slope at water intake of Jinfooshan Water Conservancy Project in Chongqing as an example, from the viewpoints of slope shape, deformation and failure mechanism and safety, combined with the displacement, potential sliding surface and shear strain in the process of excavation and reinforcement The deformation and stability of rock mass in the process of grading excavation and edge excavation and reinforcement are studied. The results show that the overall safety and slope displacement of slope in grading excavation and reinforcement process meet the requirements of “Technical Specifications for Slope Construction of Water Conservancy and Hydropower Engineering”; the possible damage form of the slope after deep reinforcement is deep sliding, In the first stage, the displacement at the top of the slope changed suddenly, but the deformation tended to be stable in the following construction process. The safety factor of slope after reinforcement was obviously increased The whole slope is stable.