为了研究高压旋喷锚杆支护体系在黄土深基坑工程中的工作性状,选取西安某深基坑支护工程为研究对象,运用MIDAS/GTS软件对该支护体系进行了有限元数值模拟,并与二次注浆锚杆支护体系的模拟结果进行了对比分析.结果表明:两种基坑支护方式均可满足该基坑支护的技术要求,但采用高压旋喷锚杆支护时,需要锚杆的总长度为二次注浆锚杆长度的62%,且高压旋喷锚杆筋体可实现回收,降低了锚杆施工对周围土层的干扰,其在黄土地区高边坡及深基坑支护工程中有着广阔的应用前景.%In order to analyze the behaviour of high pressure jet grouting anchor system in loess deep foundation pit ,in the construction of a foundation pit in Xi 'an ,the finite element numerical simulation of the supporting system is developed by using MIDAS /GTS software and compared with the secondary splitting grouting anchor .The results show that the two kinds of foundation pit support methods can meet the technical requirements of the foundation pit support ,but by using high pressure jet grouting anchor ,the total length of the anchor is 62% of the secondary splitting grouting anchor ,and high pressure jet grouting anchor bar can achieve recovery ,reduce the effect of cable construction on the surrounding soil layers , it has a broad application prospect in the high slope and deep foundation pit supporting engineering in Loess Area .
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