高分子固化剂加固土质边坡的稳定性分析  

Stability analysis of soil slope reinforced by polymer curing agent

作　　者：汪勇[1] 刘瑾[1] 张达[1] 冯巧[1] 亓孝辉 冯嘉馨 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098

出　　处：《河北工程大学学报（自然科学版）》2016年第4期14-16,38,共4页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(41472241;41202208)

摘　　要：分析高分子固化剂的加固机理,并利用室内试验测得的抗剪强度参数,采用Slide软件进行数值建模,主要研究在不同边坡坡比工况下,固化剂的浓度和加固厚度对边坡稳定性的影响。研究结果表明:高分子固化剂的护坡机理主要为高分子固结成膜加固,植被根系的锚固和加筋作用。高分子固化剂对于不同坡比工况下的边坡稳定性的提高均具有积极的作用。在同一坡比工况下,加固深度对于稳定性的影响受其他因素相关性小,而固化剂浓度对于稳定性的影响受本身稳定性系数影响,与其他因素相关性较大。当边坡坡比越小时,即原坡面稳定性系数越小时,加固后稳定性系数增加的比例越小。高分子固化剂应用到工程边坡上,促进边坡坡面的植被生长与恢复,根被根系的加固作用将更有利于提高边坡的稳定性。As a new type of soil reinforcement material, polymer curing agent plays an important role in slope greening and slope stability. The polymeric solidified agent reinforcement mechanism was an-alyzed, and the laboratory test of shear strength parameters was carried out. The aim of these works is to analyze the influence of the curing agent concentration and reinforcement thickness on slope stabili-ty under different slope conditions. The results show that the slope protection mechanism of the poly-mer curing agent is mainly for the consolidation of the polymer and the anchoring and reinforcement of the vegetation root system. The slope stability of polymer curing agent for different slope under the condition of the increase has a positive effect. In the same slope conditions, reinforced depth for sta-bility is more affected by other factors than the curing agent concentration. Application of polymer cu-ring agent to the slope engineering can promote the growth and restoration of vegetation on the slope surface, and the root reinforcement effect will be more conducive to improve the stability of the slope.

关 键 词：高分子固化剂 土质边坡 加固机理 稳定性 数值模拟 

分 类 号：TU43[建筑科学—岩土工程]