A low clay mineral mudstone roadbed in-situ swelling deformation and humidity field combined monitoring test system and method
By using modular test pit units, multi-level adjustable mechanical loading systems, distributed high-precision deformation monitoring systems, three-dimensional humidity monitoring systems, and precision peristaltic pump constant flow water injection systems, the problem of accurately reflecting the expansion behavior of low-clay mineral mudstone was solved, multi-parameter synchronous monitoring and data integration were realized, and reliable data support for the design of high-speed railway subgrade was provided.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SOUTHWEST JIAOTONG UNIV
- Filing Date
- 2026-05-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to accurately reflect the expansion behavior of low-clay mineral mudstone under complex boundary conditions. Furthermore, they lack synchronous and three-dimensional joint monitoring of deformation and humidity fields. The test system causes significant interference to the undisturbed rock and soil, and the coordination of loading, water supply, and measurement systems is poor, making it difficult to achieve synchronous acquisition of multiple parameters and long-term stable control.
The system employs modular test pit units, a multi-level adjustable mechanical loading system, a distributed high-precision deformation monitoring system, a three-dimensional humidity monitoring system, and a precision peristaltic pump constant flow water injection system. Combined with an integrated data acquisition and processing system, it achieves synchronous automatic acquisition and analysis of multiple parameters, reduces disturbance to the original soil and rock mass, accurately simulates multi-level engineering loads, tracks the water infiltration process, and constructs a highly integrated test platform.
It has achieved accurate load simulation and multi-field synchronous monitoring of low clay mineral mudstone subgrade, reduced system interference, provided reliable field test data support, revealed the mechanism of micro-expansion disease, and provided reliable technical support for high-speed railway subgrade design.
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Figure CN122409366A_ABST