Scholarlink

<p>In this study, the coal mine overburden was collected from the Ballarpur Coal Mine in the Chandrapur district of Maharashtra, India, for use as subballast in railway embankments. The material was pulverised to determine index, strength, durability, and mineralogical properties. The results showed that the coal mine overburden as subballast satisfied the required gradation, strength, and durability criteria, exhibiting well-graded characteristics, high slake durability (98.80%), and adequate load-bearing capacity (CBR 14.23%). A three-dimensional finite element model was developed to study the deformation and stress distribution under pseudo-static loading, considering the waste rubber tyre as confinement for subballast. The tyre confinement showed significantly improved structural stability. The lateral displacement was approximately reduced by 50%, and the vertical deformation by 38%. The tyre confinement decreased the peak subgrade stress by about 23%, indicating uniform stress dispersion. The tyre-soil composite acts as a flexible load-distributing layer, enhancing stiffness attributes to mitigate stress concentration. The results proved that the coal mine overburden as subballast with confinement is a sustainable solution in the construction of railway embankments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental and Numerical Investigation for Coal Mine Overburden as Subballast in Railway Embankment

  • 期刊论文

  • 发表日期：

    2026年7月9日

查看全文
  • Kanchan Patil,
  • Jitesh T. Chavda,
  • Ankesh Kumar

摘要

In this study, the coal mine overburden was collected from the Ballarpur Coal Mine in the Chandrapur district of Maharashtra, India, for use as subballast in railway embankments. The material was pulverised to determine index, strength, durability, and mineralogical properties. The results showed that the coal mine overburden as subballast satisfied the required gradation, strength, and durability criteria, exhibiting well-graded characteristics, high slake durability (98.80%), and adequate load-bearing capacity (CBR 14.23%). A three-dimensional finite element model was developed to study the deformation and stress distribution under pseudo-static loading, considering the waste rubber tyre as confinement for subballast. The tyre confinement showed significantly improved structural stability. The lateral displacement was approximately reduced by 50%, and the vertical deformation by 38%. The tyre confinement decreased the peak subgrade stress by about 23%, indicating uniform stress dispersion. The tyre-soil composite acts as a flexible load-distributing layer, enhancing stiffness attributes to mitigate stress concentration. The results proved that the coal mine overburden as subballast with confinement is a sustainable solution in the construction of railway embankments.