STUDY ON SIZE EFFECT OF COAL INTENSITY BASED ON WEIBULL DISTRIBUTION

摘要：

In order to realize reasonable application from standard coal body strength of laboratory test to the engineering project,a lot of uniaxial compressive strength experiments are conducted with five kinds of different sizes of coal samples from the domestic and international coal mine engineering using RFPA software numerical simulation.And deformations and damage forms of coal samples are researched.The fitting analysis is proceed by means of size effect experiment of uniaxial compressive strength and numerical test results of Weibull distribution,The attenuation law of coal samples macroscopic strength with coal intensity and homogeneous degree is obtained.The regression formula of standard coal sample strength reduction to coal intensity is gotten from test results,and satisfactory results comparing with the local data can be obtained.

关键词： heterogeneity compression strength regressive formulation

作者: Yong Wei.Lan Hong Mei.Gao Ji Tao.Zhao

作者单位: Resources and environmental engineering Heilongjiang Institute of Science and Technology,Haerbin,15 Heilongjiang Institute of Science and Technology,Haerbin,150027,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 800-803

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）