大型水电站隧洞开挖施工的三维数值模拟研究

3-D numerical simulation study on tunneling for large-scale hydropower station

随着我国水电站装机巨型化,隧洞大型化的发展,特大断面隧洞的出现使其施工面临严峻的考验。隧洞作为水电站的关键设施,对其施工导流、泄洪起着尤为重要的作用。利用ANSYS对大型隧洞开挖进行数值模拟,以了解大型隧洞的位移场分布,选择合适的开挖方案。对保障施工安全、加快施工进度均具有十分重要的意义。

Following the development of hydropower station with giant hydro-generator unit and large-sized tunnel in China, the occurrence of tunnel with super large-sized cross-section makes its construction facing with an austere challenge. As one of the key facilities of a hydropower station, tunnel places an important role in the construction diversion and flood discharge of it. An ANSYS based numerical simulation is made on the excavation of large-sized tunnel herein, so as to make sure of the distribution of the displacement field of a large-sized tunnel and select a relevant appropriate excavation scheme. This has a very important significance for ensuring construction safety and speeding up construction progress.