某机场高填方边坡变形机理及支护设计研究

西南地区山区机场因复杂的地质、地形及净空条件，导致出现大量的挖填量巨大、填料极为复杂、施工条件恶劣等工程难度巨大的高填方机场，对这类典型案例进行分析总结对类似工程具有很大的借鉴意义。本文以西南某高填方机场为例，系统地分析了边坡出现裂缝的原因，经过理论分析提出了坡脚反压、铺设土工材料、边坡下部设置抗滑桩、改造排水系统及增设仰斜排水孔的治理措施，治理后超过1.5a的监测资料表明上述措施大幅地减小了边坡变形速率，工程措施可靠有效。本文对机场高填方边坡变形原因的探讨、理论计算方法及治理措施对类似工程具有较大的借鉴意义。

RESEARCH ON DEFORMATION MECHANISM AND SUPPORT DESIGN OF HIGH FILL SLOPE IN AN AIRFIELD

Due to complex geological, topographical and clearance conditions, a lot of high-fill airports with the characteristics of large volume of earthwork, complex filling materials, bad construction conditions, and toughly technical difficulty have appeared in mountainous area of southwest China. The purpose of this study is to analyze and summarize a typical case of a complex high-fill airport to provide references to other similar projects. In this paper, the reasons of tension cracks of filling slope in a high-fill airport in southwest China is analyzed, theoretical analysis is performed, and comprehensive treatment measures including construction of toe back pressure, geotextile material, anti-sliding pile, drainage system and draining holes are carried out. Monitoring data for more than 1.5 years after the treatment revealed that the deformation rate has reduled considerably, and that the treatment measures are reliable and effective. The study on deformation of slope, the method of theoretical calculation, and the treatment measures taken in the project will provide good reference for similar projects.