水平注浆在盾构隧道接收洞口中的应用  

Application of horizontal grouting method in receipt well of shield-driven tunnel

作　　者：刘广仁[1] 曹会清[1] 杜伟[1] 尹昆仑[1] 郝永杰[1] 

机构地区：[1]中国石油天然气管道局第四工程分公司,河北廊坊065000

出　　处：《油气储运》2013年第2期215-217,共3页Oil & Gas Storage and Transportation

摘　　要：以某泥水平衡式盾构接收洞口地层加固工程为例,对盾构隧道接收洞口周边土体加固技术进行研究。通过对比分析地面垂直注浆、高压旋喷和水平注浆等加固方案的优缺点,择优选择水平注浆加固工艺。介绍了根据实际地质情况优化注浆孔位的平面布置,井壁钻孔与埋设孔口管工艺,注浆孔口管的使用方法及注浆工艺与参数等。通过井壁预留孔检查注浆固结情况,效果良好,有效防止了涌水、涌砂及倒灌等,可为后续盾构机顺利进洞提供保障。实践表明:水平注浆工艺有效缩短了施工时间,对于砂卵石层有较好的可操作性和可灌入性,提高了地层固结的成功率。(图2,参4)Taking the reinforced engineering of receipt well in cement-water balance type shield-driven tunnel as an example, the paper researches the reinforcement technology for the soil around the receipt well. By comparing and different reinforcement schemes, such as surface vertical grouting, high-pressure rotary jet grouting, and horizontal grouting, etc, the reinforcement process of horizontal grouting was selected. The plane arrangement of grouting location was determined and optimized according to actual geological condition, process in well wall bore and buried borehole orifice-pipe, method of grouting orifice pipe and grouting process and parameters, etc. Grouting consolidation situation was checked out through preserved bores of well wall. Results showed that this method had a sound project effectiveness, preventing the water burst, sand gushing, back flushing, etc, which can provide protection to the operation of subsequent shield machines. Practices prove that the horizontal grouting method can shorten the construction time, have better operability and grouting ability for sand and gravel layer, and have improved the success rate of formation consolidation. （2 Figures, 4 References）

关 键 词：盾构隧道 水平注浆 地基加固 

分 类 号：TE89[石油与天然气工程—油气储运工程]