摘要
通过建立顶板-煤体系统的Bingham黏弹塑性本构模型,从能量角度分析了煤壁片帮与煤体黏性系数、弹性模量、顶板刚度、开采煤层厚度之间的关系,并通过对赵固二矿11050工作面采取"注浆+棕绳"柔性加固技术来防治煤壁片帮,验证了结论的正确性。
The Bingham visco elastic plastic constitutive model of roof and coal body system were built and the occurred conditions of coal rib spalling were got based on the energy instability equilibrium criterion. At the same time, the relationship between coal rib spalling and viscosity coefficient,elasticity modulus, roof rigidity and mining height was analysed from the point of energy. The conclusions were verified by using the flexible reinforced technique, which was utilizing grouting and coir rope, to protecting the coal from rib spalling in 11050 working face in Zhaogu secondary colliery.
作者
邹友平
ZOU You-ping(Department of Coal Mining and Design, Tiandi Science and Technology Co., Ltd., Beijing 100013,China)
出处
《煤炭技术》
CAS
2018年第7期40-42,共3页
Coal Technology
基金
国家自然科学基金资助项目(51604151)
