堵水注浆在引汉济渭工程岭南TBM施工段的应用研究

发布时间：2018-03-06 18:10

本文选题：引汉济渭工程　切入点：岭南　出处：《水利水电技术》2017年02期 　论文类型：期刊论文

【摘要】：引汉济渭工程岭南(秦岭南部)TBM施工段为反坡施工,隧洞突涌水全部通过大功率水泵逐级抽排至洞外。受排水设施布设、隧洞空间、电力供应、工程投资等因素影响,以及TBM掘进段和施工支洞长度均较长的客观条件,突涌水对施工的干扰、影响尤为巨大,特别是较大集中突涌水,对人员、设备安全会造成极大威胁。为保证施工安全的同时TBM掘进正常进行,针对该施工段突涌水处理制定了"以堵为主、堵排结合"的原则,采取常规双液浆堵水注浆和特殊材料堵水注浆相结合的方式,对集中涌水点进行封堵。结果表明,在8个涌水量大、涌水点集中的段落进行堵水注浆,涌水段落实际封堵率超过了99%,满足事先制定的封堵标准。该方法可为同类工程TBM施工提供借鉴。
[Abstract]:Hanjiang to Weihe River project in south of the Five Ridges (Southern Qinling Mountains) TBM construction section for reverse slope construction, tunnel water inrush through high power pump pumping to step outside. By the arrangement of drainage facilities, tunnel space, power supply, factors affecting the project investment, and the objective conditions of TBM and construction of excavation section tunnel length were longer the construction of the water inrush, interference effects, particularly large, especially concentrated on water inrush, personnel, equipment safety will pose a great threat. In order to ensure the construction safety and TBM tunneling is normal, for the construction of water gushing treatment for the "block based, block combined with drainage" principle, take the routine the double liquid grouting materials and special grouting combination, plugging the issue points. The results show that in the 8 large water inflow, water gushing from passages for water blocking grouting, plugging the actual gushing fall rate of more than 99%, This method can be used for reference for the construction of TBM in the same kind of engineering.

【作者单位】：四川二滩国际工程咨询有限责任公司;陕西省引汉济渭工程建设有限公司;
【基金】：国家重点研发计划项目(2016YFC0401805) 2013年陕西省科技统筹创新工程计划项目(2013KTZB-03-01-01)
【分类号】：TV554

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