| 1. | Calculating relative thickness of coal seam in qudi area by 3d seismic data
利用三维地震资料计算曲堤地区煤层相对厚度 |
| 2. | Numerical simulation of the influence of hardness and thickness of coal seam on rock burst
煤层硬度与厚度对冲击矿压影响的数值模拟 |
| 3. | The hardness and thickness of coal seam play a great role in the vertical distribution of stress in coal and the occurrence of rock bunt under the condition of hard roof and hard floor
在“两硬”条件下，煤层厚度与硬度的变化对煤体中的应力分布有着很大的影响，从而对煤岩体系统中冲击矿压的发生有着很大的影响。 |
| 4. | This paper analyzes on the influence of the variation in thickness of coal seam and the supporting method on the coal quality , and based on this , advances some measures for reducing the gangue production to improve the coal quality on the tunneling faces
分析了煤层厚度变化和支护方式对煤质的影响,在此基础上提出了若干减少出矸以提高掘进工作面出煤质量的措施。 |
| 5. | Since the vertical stress distribution of coal and rock can reflect the risk of rock burst , the influence of hardness and thickness of coal seams with a hard roof and a hard floor on the vertical stress distribution of coal and rock was simulated
摘要在坚硬顶板和底板的“两硬”条件下，对不同煤层厚度和硬度对煤岩体中的垂直应力分布的影响，也即反映了对煤岩体中发生冲击矿压危险性的影响进行了模拟。 |
