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金属矿山 ›› 2015, Vol. 44 ›› Issue (04): 89-93.

• 开采损害 • 上一篇    下一篇

急倾斜多煤层开采地表移动规律与岩层破坏特征

阎跃观1,戴华阳1,吕志强1,2,郭俊廷1,田秀国2   

  1. 1.中国矿业大学地球科学与测绘工程学院,北京 100083; 2.开滦(集团)有限责任公司,河北 唐山 063018
  • 出版日期:2015-04-15 发布日期:2015-08-04
  • 基金资助:

    * 国家自然科学基金项目(编号:50974122),中央高校基本科研业务费专项资金项目(编号:2010QD01)。

Surface Movement Law and Rock Strata Failure in Mining of Steeply Inclined Multiple Coal Seams

Yan Yueguan1,Dai Huayang1,Lu Zhiqing1,2,Guo Junting1,Tian Xiuguo2   

  1. 1.The College of Geoscience and Surveying Engineering,China University of Mining & Technology,Beijing 100083,China;2.Kailuan Group,Tangshan 063018,China
  • Online:2015-04-15 Published:2015-08-04

摘要: 急倾斜多煤层开采覆岩破坏和地表移动规律不同于缓倾斜煤层开采。采用相似材料模型实验对赵各庄矿急倾斜多煤层开采进行了模拟研究。通过对7次观测数据分析,得出了不同开采阶段地表移动变形规律及岩层破坏特征。实验结果表明:地表下沉盆地具有分区沉降突变性和沉陷分布格局控制性特点,岩层的空间破坏范围随着煤层开采层数的增加和开采深度的加大而扩大,其破坏特征主要表现为累积性和突变性。

关键词: 急倾斜, 多煤层, 地表移动规律, 岩层破坏特征, 相似材料模型

Abstract: The overburden failure and surface movement law during mining of the steeply inclined multiple coal seams are different from the gently inclined one.With the similar material simulation,the mining process of steep inclined multiple coal seams in Zhaogezhuang mine is simulated.Through analyzing 7 groups of observed data,the surface movement deformation law and overburden failure at different mining stages were obtained.The simulation results show that the surface subsidence basin has the features of paroxysmal partition subsidence and controlled subsidence distribution pattern.With the increase of the numbers of coal seam mining layer and the expansion of mining depth,the space of rock strata failure is enlarged.The main performance of rock failure is cumulative and paroxysmal.

Key words: Steeply inclined, Multiple coal seams, Surface movement law, Rock strata failure characteristics, Similar material model