黑龙江某钼矿大断面深井井筒支护厚度优化  

A Heilongjiang Molybdenum Mine Section of Deep Shaft Support Thickness Optimization

作　　者：崔浩[1] 杨仕教[1] 申延 王华 杨新华[1] 

机构地区：[1]南华大学核资源工程学院,湖南衡阳421001 [2]驰宏科技工程股份有限公司,湖南长沙410000 [3]大兴安岭金欣矿业有限公司,黑龙江大兴安岭地区165000

出　　处：《南华大学学报（自然科学版）》2014年第2期44-48,共5页Journal of University of South China：Science and Technology

摘　　要：黑龙江某钼矿混合井断面直径为6 m,井深1 240 m,原设计除井颈部分外全部采用500 mm混凝土等厚度支护.本论文采用经验法对井筒支护厚度进行初步设计,然后用MIDAS/GTS专用岩土大型商业软件对井筒进行数值建模,通过数值模拟法分析比较不同支护厚度情况下的井筒围岩和支护体的应力、应变情况,从而确定经济合理的支护厚度.通过优化,井筒支护厚度从500 mm调整为400 mm,减少了混凝土材料用量,显著缩短了井筒施工周期,对极寒地区大断面深井支护有重要的指导意义.The original design of the mixed well section of a molybdenum mine in Heilongjiang,which diameter is 6 m and depth is 1 240 m,adopts 500 mm thickness of the concrete support in addition to the neck of well. This paper adopts empirical method to design shaft lining thickness as preliminary design,and then the large commercial specialized geotechnical software MIDAS /GTS is used to model well shaft,comparing the stress and the strain of rock and support system in different supporting thickness through the numerical simulation analysis,and thus to determine the economic and reasonable support thickness.Through optimization,shaft lining thickness is changed from 500 mm to 400 mm,reducing the dosage of concrete material,shortening the construction period of the well shaft,which has important guiding significance for the deep well support in the extremely cold area.

关 键 词：大断面深井 支护厚度 有限元数值模拟 优化 

分 类 号：TD262[矿业工程—矿井建设]