By means of some parameters that reflect breaking strength of coal body structure, changing features of coal body structure at No.3 coal bed of No.1 mine in Shizuishan Mine Area are studied.

• 采用反映煤体结构破坏程度的若干宏观与测试参数,研究了石嘴山一矿井田主采三层煤的煤体结构变化特征。