Foundation coefficient prediction method and system for coal-based solid waste vibratory compacted fill

By conducting foundation coefficient simulation tests and numerical simulations on coal-based solid waste fillers, a multilinear elastic constitutive model was constructed, which solved the problem of rapidly evaluating its vibration compaction bearing capacity indoors, reduced the need for on-site testing, saved manpower and material resources, and improved construction quality and efficiency.

CN122333840APending Publication Date: 2026-07-03CHINA ENERGY GRP NINGXIA COAL IND CO LTD +2
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Patent Information

Application Number
CN202610294299.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-11
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing technologies cannot quickly evaluate the bearing capacity of coal-based solid waste fillers after vibration compaction indoors, resulting in the need for extensive field testing and wasting human, material, and engineering investment.

Method used

By conducting foundation coefficient simulation tests on coal-based solid waste fillers, a multilinear elastic constitutive model is constructed. Load-displacement curves are used for numerical simulation, and the target foundation coefficient is predicted by combining calibration coefficients, thus enabling rapid indoor evaluation of its bearing capacity after vibration compaction.

Benefits of technology

This technology enables rapid indoor evaluation of the vibration compaction bearing capacity of coal-based solid waste fillers, reducing the need for on-site testing, saving manpower and resources, and improving construction quality and efficiency.

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Abstract

This invention provides a method and system for predicting the subgrade coefficient of vibratory compacted coal-based solid waste filler, belonging to the field of environmental geotechnical engineering. The method includes: obtaining load-displacement curves under lateral confinement conditions and constructing a multilinear elastic constitutive model; performing numerical simulation using the multilinear elastic constitutive model to obtain test results of the subgrade coefficient; substituting the field elastic modulus of the target subgrade coefficient into the multilinear elastic constitutive model to obtain the numerical simulation results of the target subgrade coefficient; determining the calibration coefficient between the test results of the subgrade coefficient and the numerical simulation results of the target subgrade coefficient; and using the determined calibration coefficient and the load-displacement curves under lateral confinement conditions to obtain the predicted subgrade coefficient of the target subgrade coefficient. This method solves the problem that the bearing capacity of vibratory compacted coal-based solid waste filler cannot be quickly evaluated indoors, requiring numerous field test sections to evaluate the subgrade coefficient, resulting in wasted manpower, material resources, and engineering investment.
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