期刊论文

中文

水利水电技术(中英文)

1000-0860

2023

54

03

105-115

10.13928/j.cnki.wrahe.2023.03.009

国家自然科学基金青年科学基金项目(52108389)； 湖南省自然科学基金项目(2021JJ41086)；

本校为第一机构

竖井建设面临的地质条件与周边环境越来越复杂，给施工带来了极大的挑战。针对竖井施工对破碎地层及周边环境影响大，施工风险高等问题，依托以礼河Ⅳ级电站出线竖井工程，从竖井掘进机选型、施工工艺步骤等方面探讨了竖井掘进机与局部爆破开挖组合施工的可行性，通过数值模拟和现场实践研究了该组合施工方法在破碎地层中的适用性。结果表明：在数值模拟中，竖井开挖后围岩变形量值与围岩塑性区范围均较小，支护结构主应力小于规范限值，结构处于安全状态；现场应用后，出线竖井整体偏斜率和围岩变形量值均符合要求，该方法施工效率较高，且施工过程中未出现井壁失稳现象，竖井成井质量较好。此...

[Objective]The geological conditions and the surrounding environment of the shaft construction are becoming more and more complicated,which creates a great challenge for construction.In view of the high impact of shaft construction on the broken strata and surrounding e...MORE [Objective]The geological conditions and the surrounding environment of the shaft construction are becoming more and more complicated,which creates a great challenge for construction.In view of the high impact of shaft construction on the broken strata and surrounding environment and the high construction risk,in order t...