武深高速某复杂煤系地质高边坡病害处治

Treatment of Geological High Slope Disease in a Complex Coal System a At Wushen High Speed

武深高速公路韶关段K227+180~K227+580右侧路堑高边坡为复杂煤系地质边坡;施工期受连续强降雨影响,煤系地层浸泡为软弱夹层,导致施工期间产生了多次大规模变形及滑塌破坏,为本高速公路施工难点之一。结合施工实际详细描述了工点病害过程、原因分析、处治思路及变更处理过程,对复杂煤系地层边坡防护处治有效方法进行了探讨,特别是阐述了注浆钢花管、钢锚管加固对煤系地质可起到良好的防护支挡作用。

The high slope of shaoguan section of wushen expressway is K227＋180~K227＋580,which is the geological slope of complex coal system. After construction excavation,affected by the continuous rain,strata by rain water into weak intercalation,lead to large-scale deformation and sliding failure produced during construction period,as one of the highway construction difficulties. The paper described in detail in combination with the construction practice worksite disease process,cause analysis,the thoughts and the change process of treatment. Treatment effective method for complex strata slope protection are discussed,especially expounds the spray of molten steel tube,steel anchor pipe grouting reinforcement of coal geological retaining wall has good protection function.