微扰动双液注浆纠偏技术在南京地铁盾构隧道病害治理中的应用

Application of Micro Disturbance Correction Technique for Double Liquid Grouting in Shield Tunnel Disease Treatment of Nanjing Metro

因南京与上海两地的地铁盾构隧道拼装方式不一致,且南京地质条件更为复杂、隧道埋设更深,通过对试验段采用微扰动双液注浆的结果数据分析,验证了在上海地铁隧道纠偏取得成功的微扰动双液注浆技术适用于南京地铁,并对注浆孔距离、注浆顺序及注浆终止条件等施工参数进行优化,以指导后期施工。

Since the shield tunnel assembly modes in Nan- jing and Shanghai are inconsistent, and the geological con- dition in Nanjing is more complicated, and tunnel must be buried deeper. According to an analysis of the tested data, the double liquid grouting technology of micro disturbance adopted in Shanghai metro tunnel is verified to be applica- ble to Nanjing metro. Finally, construction parameters of the hole distance, grouting sequence and grouting termina- tion conditions are optimized, so as to guide the later con- structions.