| 老顶岩块端角摩擦系数和挤压系数实验研究 |
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| 引用本文： | 黄庆享,石平五,钱鸣高.老顶岩块端角摩擦系数和挤压系数实验研究[J].岩土力学,2000,21(1):60-63. |
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| 作者姓名： | 黄庆享 石平五 钱鸣高 |
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| 作者单位： | 西安科技学院 采矿系, 陕西 西安 710054) ( 中国矿业大学 采矿系, 江苏 徐州 221008 |
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| 基金项目： | 陕西省自然科学基金! (98D0 2 ),煤炭高校青年科学基金! (97 0 31) |
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| 摘 要： | 通过岩块实验、相似模拟和计算模拟, 研究了采场老顶岩块端角摩擦和端角挤压特性。 得出老顶岩块端角摩擦角为岩石残余摩擦角, 摩擦系数确定为 0 . 5; 端角挤压强度受弱面的影响明显且具有规律性, 端角挤压系数确定为 0. 4
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| 关 键 词： | 老顶岩块 端角摩擦 端角挤压 |
| 收稿时间： | 1999-03-21 |
| 修稿时间： | 1999-03-21 |
Experiment study on the coefficients of friction and inserting of main roof block corner |
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| Huang Qingxiang,Shi Pingwu,Qian Minggao.Experiment study on the coefficients of friction and inserting of main roof block corner[J].Rock and Soil Mechanics,2000,21(1):60-63. |
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| Authors: | Huang Qingxiang Shi Pingwu Qian Minggao |
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| Institution: | Xian University of Science and Technology, Xian 710054, China) ( China University of Mining and Technology, Xuzhou 221008, China |
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| Abstract: | Through tests on rock block similation of simularity of
rock material and finite element calculation, the characteristics of friction and
squeezing at main roof block corner are studied. It is found that the friction angle of
main roof block corner is the residual friction angle, and the coefficient of friction is
determined as 0.5. Weak planes have an obvious and regular effect on the squeezing
strength of main roof block corner, and the coefficient of roof block corner is determined
as 0.4. |
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| Keywords: | main roof block friction of block corner inserting of block corner |
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