摘要
与缓倾斜煤层开采相比 ,急倾斜煤系地层常隐含软弱夹层 ,其露头容易出现台阶和裂缝 ;与切割岩层的结构面比较 ,层间软弱面并不对移动盆地起全局控制作用 ,而只产生局部影响 通过综合考虑急倾斜地层与层间弱面两个因素 ,阐明了急倾斜煤层开采地表非连续变形的发生条件 ;采用相似材料模型实验 ,研究了岩层垮落、弯曲、离层的方式和形态 ;提出了急倾斜煤层开采岩层的层梁移动模式 ;揭示了地表非连续变形的形态特征和变形机理 ,为进一步研究地表非连续变形的计算提供了依据 图 7,表 2 ,参
In comparison with gently-inclined coal seams and strata, steeply-inclined strata more universally contain weak planes due to strenuous geologic process; in comparison with tectonic plane that cuts strata, interlayer weak plane can't affect overall perspective of mining subsidence. This paper deals with the influenced relations of the two condition (steep seam mining and, the existence of interlayer weak plane) to ground and rock's discontinuous deformations. The inducement conditions of discontinuous surface deformation are discussed. Based on the method of similar material model test, the falling, bending and separating behaviors of mining strata are revealed. Moreover, a series of results about discontinuous deformation characteristics and mechanism are derived from the test, which will provide scientific basis for further research on discontinuous deformation calculation.7figs.,2tabs.,7refs.
出处
《湘潭矿业学院学报》
EI
2000年第3期1-6,共6页
Journal of Xiangtan Mining Institute
基金
煤炭科学基金!资助 ( 96采 60 2 1 7)
博士学科点专项科研基金!资助 ( 1 9990 2 90 1 3)
关键词
急倾斜煤层
非连续变形
相似模型实验
开采
steep seams
weak stratum plane
discontinuous deformation
similar material model test
