Study on Rock Mechanical Properties and Quality Classification of Surrounding Rock of Tunnel Group in Gui’an Tencent Data Center

Abstract

岩体质量评价结果对岩土工程设计与施工具有重要的参考价值，是岩土工程安全高效开展的重要保障。本文以贵安腾讯数据中心隧道群为工程实例，通过开展声波测试会和室内岩石力学试验，分别对隧道群围岩的岩石力学性质和质量分级进行了研究。研究结果表明：贵安腾讯数据中心隧道群中围岩的力学性质差异较大，单轴抗压强度范围为14.5~51.3 MPa，弹性模量范围为15.9~45.8 GPa；隧道群围岩完整性较差，完整性系数Kv变化范围为0.35~0.51，大多数围岩处于较破碎状态~破碎状态；BQ岩体质量评价结果表明，贵安腾讯数据中心隧道群围岩岩体质量为VI级岩体和V级岩体，这为后续的隧道设计施工提供了重要的参考，具有重要的研究意义。 The results of rock mass quality evaluation have important reference value for the design and construction of geotechnical engineering, and it is an important guarantee for the safe and efficient development of geotechnical engineering. In this paper, taking the tunnel group of Gui’an Tencent data center as an example, the rock mechanical properties and quality classification of the surrounding rock of the tunnel group are studied respectively through the acoustic test meeting and indoor rock mechanics test. The results show that: the mechanical properties of surrounding rock in the tunnel group of Gui’an Tencent data center are quite different; the uniaxial compressive strength range is 14.5~51.3 Mpa; the elastic modulus range is 15.9~45.8 GPa; the integrity of surrounding rock of the tunnel group is poor; the integrity coefficient Kv range is 0.35~0.51; most of the surrounding rock is in a relatively broken state~broken state. BQ rock quality evaluation results show that the surrounding rock mass quality of data center tunnel group is grade VI rock mass and grade V rock mass, which provides an important reference for the subsequent tunnel design and construction, and has important research significance.