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在山区高公路上经常遇到顺向坡、滑坡蠕变体和陡反倾坡。对于顺向坡,是否稍陡倾的坡体就应加固,而稍缓倾坡体可以不加固,边坡专家根据现场情况给出相应的工程措施主要是基于顺层边坡中的主要控制层位、相关特性和场地地质条件得出缓坡预加固、稍陡坡整体稳定的结论。从红砂岩显示倾角、倾向异常着手,通过多方面的分析调查,该岩层的特性以及反分析潜在滑动面力学特征,分析判断该切坡体为一蠕滑变形体,进而强调采用抗滑桩预先加固的工程处理方式,通过实际切坡变形破坏证明边坡专家的分析判断和工程措施的正确性。对于红砂岩反倾陡边坡,由于存在软弱夹层和顺坡向节理的切割,边坡岩性强度随雨水渗透软化,特别是现场有类似自然层倾倒变形特征,需要采取工程加固措施。边坡专家能根据工程场地性质,综合分析控制层随时间变化特征及对稳定性起控制性因素,能预先提出合理的工程措施,避免或减少工程损失,达到事半功倍的效果。
In the mountainous highways often encounter forward slope, landslide creep body and steep reverse slope. For the forward slope, whether the slope is slightly steep slopes should be strengthened, while the slope can not be more gently slope reinforcement, slope experts according to the site to give the corresponding engineering measures are mainly based on the slope along the main control layer Bits, related characteristics and site geological conditions obtained gentle slope pre-reinforcement, slightly steep slope overall stability conclusion. From the analysis of red sandstone inclination and propensity to abnormalities, through the analysis of various aspects, the characteristics of the strata and the back analysis of the potential sliding surface mechanical characteristics, the slope is analyzed as a creep deformation body, and then the anti-slide piles are emphasized in advance Reinforced engineering approach, through the actual slope deformation and destruction prove that the slope expert analysis and judgment and engineering measures correctness. For the anti-dip slope of red sandstone, because of the presence of weak intercalations and cutting joints along the slope, the lithology intensity of the slope softens with the infiltration of rainwater. In particular, there are similar natural dumping deformation features in the site, and engineering reinforcement measures are required. According to the nature of the project site, the slope expert can comprehensively analyze the characteristics of the control layer over time and the controllability of the stability. It can put forward reasonable engineering measures in advance to avoid or reduce the project losses and achieve a multiplier effect.