锚固技术在高切坡稳定性中的应用

Application study on anchoring in stability of high cutting slope

大型水利设施建设过程中产生了许多人工边坡,根据边坡的特点,确定工程治理方案,是紧密结合工程实践的重要课题.峡口码头高切坡,处于硬软岩性的交接部位,自然地形陡缓有别,岩体中裂隙发育,多为层状结构和碎裂结构,其稳定性受层面的控制,在切坡初期,常产生规模不等的滑移破坏,在工程地质调查的基础上,基于小变形的假设和有限元分析,运用典型的稳定性分析方法,确定潜在滑动面,进行工程地质网格剖分,确定潜在剖面推力曲线.提出了锚固地梁技术治理措施与复杂岩体结合的较完整研究思路.

Many artificial rock slopes come into being in constructing large water conservancy facilities.It is an important issue to engineering practice that we make engineering treatment plan according to the feature of the high slope.The high cutting slope of Xiakou wharf is at the joint side of hard and soft rock,whose physiographic form is different.Crannies in the slope may grow up.The structure of the slope is bedded and cataclastic,and the stability of the slope is under the control of its bedding.In the early stage of the artificial rock slope coming into being,different scales of the slip failure often take place.Based on engineering geological investigation,the underlying assumption of small deformation and finite element analysis theory,the stability coefficient of the high cutting slope was typically analyzed;the underlying sliding surface was determined;the potential sliding body for the engineering geological body was dissected;push power curve for the potential sliding surface was made;the thought of anchoring and patand was brought forward to make decision of the the control and treatment of an artificial rock slope failure.