新疆北庭故城病害特征及保护加固研究

A Study on the Characteristics of Deterioration and the Conservation of Ancient Beiting City in Xinjiang

北庭故城是丝绸之路重镇,有重要的历史、科学和艺术价值。受自然和人为因素影响,北庭故城保存状况较差,主要病害有裂隙、雨蚀、风蚀、冲沟等,亟待实施保护。本文通过对遗址病害特征的调查、分析,提出了在掏蚀严重区域采用砌补或回填处理,对稳定性影响较大的裂隙采用灌浆锚杆加固,对表面风化严重部位采用PS渗透加固等保护措施,并通过现场试验对施工工艺进行了优化和可行性研究后,实施了抢险保护加固工程,取得了较为理想的保护效果。

The site of ancient Beiting city, an important town on the Silk Road, is located in Jimsar County and has significant historical, scientific, and artistic value. Because of natural conditions and human activities; the site is poorly preserved and shows severe deterioration in the form of fractures, rain erosion, wind erosion, and gullies urgently needing treatment. After investigating and analyzing the characteristics of the deterioration, this paper recommends the following conservation measures： building brick or stone supports or backfilling the areas of serious sapping erosion; using grouted anchors to consolidate the craCks that influence the stability of the earthen site; and grouting with PS material to consolidate the severely weathered surface. Having been optimized in field experiments, these conservation techniques have been applied in consolidation engineering projects, and have exhibited excellent conservation improvement.