海南某水利枢纽坝肩高边坡稳定性评价和处理措施探讨

Discussion on Stability Evaluation and Treatment Measures of High Slope at Dam Abutment of a Water Conservancy Project in Hainan

土质高边坡和含软弱夹层岩质边坡在自然环境和工程实践中均较常见,自然工况下其稳定性差,边坡失稳后易产生崩塌、滑坡等地质灾害,从而造成不同程度的经济损失。因此,土质高边坡和含软弱夹层岩质边坡稳定性的分析研究一直是工程地质与岩土工程领域的研究重点之一。在收集海南某水利枢纽勘察、设计、施工等相关资料的基础上,对现场边坡进行了实地调查和验证。提出了在不同地质条件下边坡地质参数的取值、边坡稳定计算公式选取和计算参数的折减范围。边坡开挖后需根据坡体的实际地质情况对施工方案进行优化调整,以保证边坡稳定和加固处理措施的经济合理性。

High soil slope and rock slope with weak interlayer are common in natural environment and engineering practice,and their stability is poor under natural working conditions.When the slope becomes unstable,it is easy to produce geological disasters such as collapse and landslide,thus causing different degrees of economic losses.Therefore,the analysis and research on the stability of high soil slope and rock slope with weak interlayer has always been one of the research focuses in the field of engineering geology and geotechnical engineering.On the basis of collecting relevant data of investigation,design and construction of a water control project in Hainan,the field investigation and verification of the on-site slope were carried out.The values of slope geological parameters,the selection of slope stability calculation formula and the reduction range of calculation parameters under different geological conditions are put forward.After excavation,the construction scheme should be optimized and adjusted according to the actual geological conditions of the slope to ensure the stability of the slope and the economic rationality of the reinforcement measures.