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本文通过对广州市轨道交通九号线花都汽车城站(全线岩溶最发育车站)围护结构地下连续墙的溶(土)洞注浆处理施工的研究,得出了岩溶处理的施工次序、注浆压力、提管高度、浆液配比及地连墙施工泥浆比重等重要控制参数,成功的控制了处理范围,达到了良好的处理效果,有效的保证了后续地连墙施工安全、质量及进度,同时使得资金投入最低、工期最短,经认真总结形成岩溶发育地区控制范围溶(土)洞处理施工关键技术。
In this paper, through the research on the grouting treatment of the dissolved diaphragm wall of the continuous diaphragm wall of Huadu Automobile City Station (covering the entire karst development station) of Guangzhou Metro Line 9, the construction sequence of karst treatment, Grouting pressure, lift height, slurry ratio and the proportion of ground and wall construction of the mud and other important control parameters, the successful control of the processing range, to achieve a good treatment effect, effectively ensure the succession of wall construction safety, quality and Progress, at the same time make the lowest capital investment, the shortest duration, after careful consideration of the formation of the karst area of ?? development control of the solution (soil) hole construction key technology.