长输水隧洞中地下水影响评价分析及措施  

Groundwater Impact Assessment Analysis in the Long Water Conveyance Tunnel and Its Measures

作　　者：王浩宇 Wang Haoyu(Shenyang Xingyu Water Conservancy Construction Engineering Quality Inspection Co.,Ltd.,Shenyang 110006,Liaoning)

机构地区：[1]沈阳兴禹水利建设工程质量检测有限公司,辽宁沈阳110006

出　　处：《陕西水利》2020年第1期117-119,共3页Shaanxi Water Resources

摘　　要：为防止地下水在岔河长输水隧洞施工中发生涌水、突泥等不良地质问题,对长输水隧洞富含地下水洞段进行水文地质评价,对涌水量进行计算,得出各洞段地下水分布情况及施工过程中可能存在的涌水、突泥等地质问题。根据涌水量计算及地质情况分析,采取集水坑、集水井与水泵、排水管相结合的排水措施,采用钢纤维喷C20砼、超前地质预报、超前探孔、超前固结灌浆、钢拱架支撑等措施解决地下水对隧洞施工的影响。实践证明,采取的排水、支护方案合理可行,及时有效地处理了事故,并保证了后续施工的顺利进行。In order to prevent the occurrence of unfavorable geological problems such as water gushing and mud outburst during the construction of the long water conveyance tunnel of the Chahe River, hydrogeological evaluation is performed on the groundwater-rich sections of the long water conveyance tunnel, and the water inflow is calculated to obtain the groundwater distribution in each section. Conditions and possible geological problems such as water inrush and mud burst during construction. According to the calculation of the gushing water volume and the analysis of the geological conditions, the drainage measures of the water collecting pit, water collecting well, water pump, and drainage pipe are adopted. Measures such as support will address the impact of groundwater on tunnel construction. Practice has proved that the drainage and support scheme adopted is reasonable and feasible, the accident was handled in a timely and effective manner, and the subsequent construction was guaranteed to proceed smoothly.

关 键 词：地下水 涌水 地质评价 钢纤维砼 超前固结灌浆 支护形式 

分 类 号：TV672.1[水利工程—水利水电工程]