摘要
砌碹支护技术作为一种传统的巷道支护形式在我国部分矿井仍然有着广泛的应用。为进一步深入理解空洞对砌碹巷道围岩稳定控制的作用机制,在总结空洞形成原因的基础上,采用FLAC^3D数值计算软件,以某矿井生产地质条件为背景,系统研究空洞位置对砌碹支护结构和围岩塑性区分布的影响。研究结果表明,空洞的存在会引起砌碹结构出现应力集中,在不均匀荷载的作用下砌碹结构极易出现结构性失稳。
As a traditional form of roadway support,masonry support technology still has a wide range of applications in some mines in China.In order to further understand the mechanism of the cavity′s stability control on the surrounding rock of the roadway,this paper summarizes the causes of the cavity formation,and uses the FLAC^3D numerical calculation software to study the cavity location of the mine.The influence of the support structure and the distribution of the plastic zone of the surrounding rock.The results show that the existence of voids will cause stress concentration in the masonry structure,and the structure of the masonry structure is prone to structural instability under the action of uneven load.
作者
文建明
黄新广
Wen Jianming;Huang Xinguang(Qunli Coal Mine,Jiangmei Guizhou Mining Group Co.,Ltd.,Bijie553300,China)
出处
《能源与环保》
2019年第7期309-313,共5页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
