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Analysis on Compaction Characteristics of Coal Gangue Subgrade

Huimin Wang

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Abstract

Combined with the filling of coal gangue subgrade of a certain section,the relation between the compaction degree and settlement of subgrade and compaction times was studied.The results indicate that both the strength and stiffness of subgrade are improved after the impact compaction,and the compaction degree reaches 95%and above;the settlement is major at first,but it becomes stable after 15 times of compaction;the result of calculation on deflection data of the surface of coal gangue subgrade also meets the requirements of construction.

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What this paper is about

Combined with the filling of coal gangue subgrade of a certain section,the relation between the compaction degree and settlement of subgrade and compaction times was studied.The results indicate that both the strength and stiffness of subgrade are improved after the impact compaction,and the compaction degree reaches 95%and above;the settlement is major at first,but it becomes stable after 15 times of compaction;the result of calculation on deflection data of the surface of coal gangue subgrade also meets the requirements of construction.

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Available abstract

Combined with the filling of coal gangue subgrade of a certain section,the relation between the compaction degree and settlement of subgrade and compaction times was studied.The results indicate that both the strength and stiffness of subgrade are improved after the impact compaction,and the compaction degree reaches 95%and above;the settlement is major at first,but it becomes stable after 15 times of compaction;the result of calculation on deflection data of the surface of coal gangue subgrade also meets the requirements of construction.

Key concepts: Subgrade, Compaction, Geotechnical engineering, Settlement (finance), Deflection (physics), Gangue, Stiffness, Geology

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