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INNOVATIVE PRACTICES AND SUSTAINABLE DEVELOPMENT FOR CAVERN DESIGN AND CONSTRUCTION BASED ON THE Q-SYSTEM AND ROCK REINFORCED APPROACH
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The Guangdong-Hong Kong-Macao Greater Bay Area (GBA) is advancing decisively towards high-quality development goals. The Cavern Master Plan (CMP) launched by the Hong Kong Government exemplifies innovative underground space development emerging from this strategic context. This paper focuses on a cavern project, one of the largest in Hong Kong, featuring a maximum excavation face span of 36.2 meters. Using this project as a case study, it systematically investigates the application of the Q-system, Rock Reinforcement Approach (RRA), and construction optimization under complex geological conditions. The Q-system quantifies the engineering characteristics and stability of rockmasses through multi-parameter coupling analysis, providing a scientific basis for decision-making in underground engineering. Addressing Hong Kong’s mountainous terrain and competent rock geology, the project employed the Rock Reinforcement Approach (RRA), integrating rock bolts and shotcrete to form a synergistic support system. Support design was optimized during construction through dynamic Q-value verification and 3D numerical modeling. This approach successfully enabled the excavation of the 36,2-meter super-large span cavern, demonstrating the applicability of the Q-system in composite hard-rock/fractured-rock strata.
University of Belgrade, Faculty of Transport and Traffic Engineering and Institute for Architecture and Urban & Spatial Planning of Serbia
Title: INNOVATIVE PRACTICES AND SUSTAINABLE DEVELOPMENT FOR CAVERN DESIGN AND CONSTRUCTION BASED ON THE Q-SYSTEM AND ROCK REINFORCED APPROACH
Description:
The Guangdong-Hong Kong-Macao Greater Bay Area (GBA) is advancing decisively towards high-quality development goals.
The Cavern Master Plan (CMP) launched by the Hong Kong Government exemplifies innovative underground space development emerging from this strategic context.
This paper focuses on a cavern project, one of the largest in Hong Kong, featuring a maximum excavation face span of 36.
2 meters.
Using this project as a case study, it systematically investigates the application of the Q-system, Rock Reinforcement Approach (RRA), and construction optimization under complex geological conditions.
The Q-system quantifies the engineering characteristics and stability of rockmasses through multi-parameter coupling analysis, providing a scientific basis for decision-making in underground engineering.
Addressing Hong Kong’s mountainous terrain and competent rock geology, the project employed the Rock Reinforcement Approach (RRA), integrating rock bolts and shotcrete to form a synergistic support system.
Support design was optimized during construction through dynamic Q-value verification and 3D numerical modeling.
This approach successfully enabled the excavation of the 36,2-meter super-large span cavern, demonstrating the applicability of the Q-system in composite hard-rock/fractured-rock strata.
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