Multi-Mechanism Rock Joint Shear Tester for Scale Effects

The loading system is segmented into multiple independent loading mechanisms (first loading mechanism, second loading mechanism, third loading mechanism, fourth loading mechanism), each capable of operating within specific load ranges. This segmentation allows the system to maintain high measurement precision across the entire load spectrum by selecting the appropriate mechanism for each load level, while avoiding the need for a single overly complex system designed to handle all loads.

The system dynamically selects and switches between different loading mechanisms based on the required load magnitude. The control system can adaptively choose which loading mechanism to activate, optimizing measurement precision for each specific test condition. This dynamic approach allows the system to maintain high reliability across varying load ranges without requiring all mechanisms to operate simultaneously.

The testing apparatus is divided into multiple specialized loading mechanisms, each optimized for specific sample scales and load requirements. The first and second loading mechanisms handle different vertical load ranges, while the third and fourth loading mechanisms handle different horizontal shear load ranges. This segmentation enables the system to accommodate multi-scale rock joint samples effectively.

Each loading mechanism is designed with universal applicability to handle different sample sizes within its designated range. The mechanisms can be selectively activated based on sample scale, making the overall system versatile for testing rock joint samples across multiple scales while maintaining a manageable complexity through functional specialization.

The load range is segmented into multiple sub-ranges, each handled by a dedicated loading mechanism. The first and second loading mechanisms cover different vertical load sub-ranges, while the third and fourth loading mechanisms cover different horizontal shear load sub-ranges. This segmentation ensures that each mechanism operates within its optimal precision range, maintaining high measurement accuracy across the entire expanded load spectrum.

The system changes operational parameters by selecting different loading mechanisms based on the required load magnitude. For small loads, mechanisms with higher precision are selected; for large loads, mechanisms designed for high capacity are selected. This parameter-based selection strategy allows the system to maintain optimal measurement precision across the full load range while achieving versatile load coverage.