复杂地质条件下双护盾TBM掘进性能研究  

Study on Tunneling Performance of Double Shield TBM Under Complex Geological Conditions

作　　者：杨继华 闫长斌[2] YANG Jihua;YAN Changbin(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China;School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]黄河勘测规划设计研究院有限公司,河南郑州450003 [2]郑州大学土木工程学院,河南郑州450001

出　　处：《人民黄河》2022年第10期133-138,共6页Yellow River

基　　金：国家自然科学基金资助项目(41972270);水利部黄河流域水治理与水安全重点实验室(筹)研究基金资助项目(2022-SYSJJ-06);黄河勘测规划设计研究院有限公司自主研究开发项目(2019-ky14)。

摘　　要：针对复杂地质条件下双护盾TBM的掘进性能问题,以兰州市水源地建设工程输水隧洞双护盾TBM施工为背景,采用现场实测数据统计分析的方法,研究不同地质条件下双护盾TBM利用率、滚刀损耗及掘进速度。研究结果表明:①对于Ⅱ类、Ⅲ类、Ⅳ类围岩,TBM利用率随着围岩类别的降低而提高,但Ⅴ类围岩由于易发生涌水及卡机等事故,因此TBM利用率一般低于10%。②硬岩对TBM滚刀损耗明显高于软岩,硬岩随着围岩类别的降低,滚刀的损耗明显降低。③对于Ⅱ类、Ⅲ类、Ⅳ类、Ⅴ类围岩,随着围岩类别的降低,净掘进速度明显提高,TBM的平均掘进速度受净掘进速度和设备利用率两方面的影响;Ⅱ类、Ⅲ类、Ⅳ类围岩的平均掘进速度随着围岩类别的降低而提高,但Ⅴ类围岩受设备利用率极低的影响,其平均掘进速度最低。Aiming at the tunneling performance of double shield TBM under complex geological conditions,based on double shield TBM con⁃struction at water conveyance tunnel in Lanzhou water source construction engineering,this paper studied the equipment utilization ratio,disc cutter consumption and tunneling speed of TBM under different geological conditions by the method of statistical analysis of field measured da⁃ta.The results show that.a)for classⅡ,Ⅲand IV surrounding rocks,the TBM utilization rate increases with the decrease of surrounding rock types,but the TBM utilization rate of classⅤsurrounding rocks is generally lower than 10%because of water gash and TBM block acci⁃dents.b)The TBM disc cutter consumption of hard rock is significantly higher than that of soft rock.Hard rock with the decrease of surround⁃ing rock classification,the disc cutter consumption is obviously reduced.c)For the surrounding rocks of ClassⅡ,ⅢandⅣandⅤ,with the decrease of the class of surrounding rocks,the penetrate rate increases obviously.The advance rate of TBM is affected by the penetrate rate and the utilization ratio of equipment.The average tunneling speed of ClassⅡ,ⅢandⅣsurrounding rocks increases with the decrease of the surrounding rock class.However,the surrounding rock of classⅤis affected by the low utilization rate of equipment,and its average tunneling speed is the lowest.

关 键 词：双护盾TBM 掘进性能 TBM利用率 滚刀损耗 掘进速度 兰州市水源地建设工程 输水隧洞 

分 类 号：TV554[水利工程—水利水电工程]