【摘要】 南方某土坡土质吸水性强,暴雨后,土的强度参数明显降低,导致大面积滑坡,滑动土体受到严重扰动。采用一般的卸载抗滑支护方法无法达到理想的治理效果。采用密排钢管压力注浆方法,在滑坡抗滑段采用两排或多排钢花管钻孔桩进行压力注浆,桩周围的土体被加固,这将形成一个坚固的连续整体,起抗滑挡墙作用。密排钢管压力注浆使滑坡土体的力学性能得到较大改善,同时结合特殊的坡面卸载和排水措施,将恢复滑坡的稳定状态,也实现了国家环保要求。更多还原

【Abstract】 A great landslide in South China is very complex. Soils have the properties of high water adsorption. Rainstorms usually reduce the strength parameters of soil and lead to landslide with severe disturbance. Treatment effect couldn’t be achieved with general excavation and support methods. So the landslide was reinforced with steel-tube and compressive grouting. Two or more line steel flower tubes drill into anti-sliding section of sliding mass with compressive grouting, reinforcing the soil around steel tubes. Therefore, the steel tubes and its soil around form a solid continuous retaining wall. Steel-tube and compressive grouting improve the mechanical capability of soil obviously so that the stability of slope will be recovered with special excavation in slope tip and drain measures together and the environmental protection requirement will be satisfied.更多还原