摘要
工作面巷道开挖后,巷道围岩体经历塑性、粘塑性以及流变三个阶段。根据宏亚煤矿D13111综放工作面的开采环境,采用UDEC软件对该综放工作面围岩体进行数值模拟计算,在数值模拟中充分考虑巷道围岩体节理面之间的水平压力、顶板的下沉量以及两帮的移近量等因素,利用模拟结果改进巷道的支护技术,提高了巷道的支护效果,降低了巷道围岩体的破坏。
After the excavation of the gateways in the coal mining face, the surrounding rock of the gateway would experience three stages, including the plasticity, viscoplasticity and rheology. According to the mining environment of No. D13111 fully mechanized top coal caving mining face in Hongya Mine, the UDEC software was applied to the numerical simulation calculation on the surrounding rock of the fully mechanized top coal caving mining face. In the numerical simulation, the horizontal pressure between the joint surfaces of the surrounding rock along the gateway, the roof settling value, the convergence value of the two sidewalls and other factors were fully considered. The simulation results were applied to improve the support technology of the gateway, improve the support effect of the gateway and reduce the failure of the surrounding rock along the gateway.
出处
《煤炭工程》
北大核心
2013年第3期71-73,77,共4页
Coal Engineering
基金
国家自然基金资助项目(51064018)
内蒙古自治区高等学校科学研究项目(NJ10093)
内蒙古科技大学创新基金资助项目(2011NCL033
2010NC050
2009NC049)
关键词
UDEC
沿空巷道
锚杆支护
变形机理
UDEC
gateway retained along goaf
bolt support
deformation mechanism
