高陡岩质边坡防治等级划分方法

Classification method of prevention and control levels for high and steep rock slopes

为有效掌握高陡岩质边坡的防治等级,结合边坡现状特征,以边坡变形数据为基础,在开展变形数据去噪分解处理基础上,通过位移判据、速率判据进行边坡防治等级的综合划分。结果表明,在边坡防治等级划分过程中,二类判据的评价结果存在一定差异,按不利原则,建议强变形区及其附近周边按Ⅳ级进行防治,其余位置可按Ⅱ级~Ⅲ级进行防治。结合边坡防治等级分析结果,得出需重点开展强变形区及其附近周边的防治处理,待其治理稳定后再进行后续施工,其余位置可在适当防治或加强监测频率基础上进行施工,以期为工程施工奠定理论依据。

In order to effectively grasp the prevention and control level of high and steep rock slopes,combined with the current characteristics of slopes,based on slope deformation data,and on the basis of carrying out deformation data denoising and decomposition processing,the comprehensive classification of slope prevention and control levels was carried out through displacement and rate criteria.The analysis results showed that there was a certain difference in the evaluation results of the two criteria in the classification of slope prevention and control levels.According to the unfavorable principle,it was recommended to prevent and control the strong deformation area and its surrounding areas according to level IV,while other locations could be prevented and controlled according to level II⁃III.Combined with the results of the slope prevention and control levels,it was concluded that it was necessary to focus on the prevention and control of strong deformation areas and their surrounding areas.Subsequent construction could only be carried out after their treatment was stable.Other locations could be constructed on the basis of appropriate prevention and control or strengthened monitoring frequency,in order to lay a theoretical basis for engineering construction.