![]()
唐春安
|
个 |
 |
论文成果
锦屏二级水电站施工排水洞岩爆数值模拟
- 点击次数：
- 发表时间：2022-10-09
- 发表刊物：山东大学学报 工学版
- 文献类型：J
- 卷号：39
- 期号：4
- 页面范围：134-139
- ISSN号：1672-3961
- 摘要：Rock-burstis a very complicated dynamical instability phenomenon.High
ground stress and its induced frequent rockbursts are major influences
of tunnel instability during the survey and design and construction
stages.As an important and casual construction of the Jinping Second
Level Hydropower Station on the Yalongjiang River,Sichuan Province,when
the drain tunnel was excavated at the depth of 1 600 m,there frequently
occurred plenty of rock-birsts,which restricted the development of
construction.Aiming to investigate the relationship between the
mock-burst mechanism and high ground stress,and to effectively predict
the location of rock-bursts in the drain tunnel,a progressive failure
progress numerical analysis code-RFPA was used to analyze the stress,and
the fitting curves of the initial stress were obtained corresponding to
the site measurement.Meanwhile,on the basis of RFPA simulation,the
disturbed zones in the surrounding rock mass induced by stress
redistribution resulting from excavation agreed with the mock-burst
fields,which indicated that RFPA can virtually simulate the mechanism of
rock-burst.
- 备注：新增回溯数据
