叶巴滩水电站尾水隧洞蚀变岩施工支护措施

Support Measures for Altered Rock in Tailrace Tunnel of Yebatan Hydropower Station

叶巴滩水电站尾水隧洞施工过程中揭露出较多的以蚀变岩为主的不良地质洞段。施工时,为保证施工期的安全及工期安排的合理性,选择正确的支护措施将成为必要且关键的工作,在施工中固化相关参数以达到良好的应对不良地质洞身段的先决条件。阐述了叶巴滩水电站尾水隧洞蚀变岩施工采用的支护措施。

During construction of tailrace tunnel of Yebatan Hydropower Station,many unfavorable geological sections mainly composed of altered rocks were exposed.In order to ensure construction safety and reasonable arrangement of construction schedule,it is necessary and critical to apply correct support measures,and solidify the relevant parameters during construction,so as to achieve a good prerequisite to deal with tunnel sections with unfavorable geological condition.This paper expounds the support measures for altered rock in tailrace tunnel of Yebatan Hydropower Station.