Experiment study on the coefficients of friction and inserting of main roof block corner

Huang Qingxiang; Shi Pingwu; Qian Minggao

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Experiment study on the coefficients of friction and inserting of main roof block corner

更新时间：2026-06-25

- Experiment study on the coefficients of friction and inserting of main roof block corner
- Vol. 21, Issue 1, (2000)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV223.1
- Online First：21 November 2016，
  
  Published：2000
- 稿件说明：
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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]. 2000, 21(1).
DOI：

Huang Qingxiang, Shi Pingwu, Qian Minggao. Experiment study on the coefficients of friction and inserting of main roof block corner[J]. 2000, 21(1). DOI：

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

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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