| 冲击式采煤煤体冲击劈裂厚度的确定 |
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| 引用本文： | 何天虎,田取珍,赵葆清.冲击式采煤煤体冲击劈裂厚度的确定[J].太原理工大学学报,2000,31(1):5-8. |
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| 作者姓名： | 何天虎 田取珍 赵葆清 |
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| 作者单位： | 1. 太原理工大学矿业工程学院
2. 大同矿务局同家梁矿 |
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| 基金项目： | 国家自然科学基金!资助项目(59574008) |
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| 摘 要： | 根据动力学及断裂力学的有关理论，对煤体断裂准则及裂纹扩展速度进行了研究，确定了合理的冲劈厚度。
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| 关 键 词： | 裂纹扩展速度 冲击劈裂厚度 冲击式采煤 煤体 |
| 文章编号： | 1007-9432(2000)01-0005-04 |
| 修稿时间： | 1999-09-07 |
Determination of Coal Impact Split Thickness of Impact Coal Cutting |
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| He Tianhu,Tian Quzhen,Zhao Baoqing.Determination of Coal Impact Split Thickness of Impact Coal Cutting[J].Journal of Taiyuan University of Technology,2000,31(1):5-8. |
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| Authors: | He Tianhu Tian Quzhen Zhao Baoqing |
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| Abstract: | A rational impact split thickness is very important to efficient coal cutting in impact mining.If split thickness is thinner,though impact resistance is reduced,lump rate is reduced too.If split thickness is thicker,a impact pit is possibly formed only and coal can not be departed.according to the theories of dynamic mechanics and fracture mechanics,we work out the rational impact split thickness by fracture criterion and the studing of crack propagation velocity. |
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| Keywords: | impact split thickness cohesion force crack propagation velocity |
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