黑龙江科技大学学报2018，Vol.28Issue(2)：142-147,180,7.DOI:10.3969/j.issn.2095-7262.2018.02.004
工作面顶板弧三角形悬板结构的形成机理与控制技术
Formation mechanism and control technology of arc triangle hanging Plate With curve side structure of coal mining face roof
摘要
Abstract
This paper is driven by the need for a deeper insight into the deformation and fracture morphology of the basic roof with non support or simple support.The research involves creating a me-chanical model of elastic thin plate with two edges clamped and two limb free edges,deducing the analyt-ic formula for deflection of the model,and analyzing the stress distribution characteristics of the basic top and lower plate surface and fracture mechanism line trajectory and the formation mechanism of arc triangle hanging plate with curve side structure;combined with the site conditions of the 1125(1)working face of Guqiao mine,developing the comprehensive control technology using truss and anchor rope as main body and bolt and steel mesh as a subsidiary part.The results show that the fracture line occurs with arc-shaped distribution at the side boundary of the upper end coal body of the two edges clamped and two limb free edges-namely an occurrence of an upper arc triangle hanging plate with curve side structure in such a way that a lower arc triangular suspension structure is more likely to take shape on the upper end roof of the working face.It follows that the lower arc triangle suspension structure benefiting from the ap-plication of the new control technology on the top end area of 1125(1)working face could provide the re-quired safety space for personnel and mechanical equipment.关键词
巷道压力/工作面上端头/弧三角形悬板/形成机理/控制技术Key words
tunnel pressure/face end/suspended triangle roof plate with curve side/formation mechanism/control technology分类
矿业与冶金引用本文复制引用
陈永斌,袁超..工作面顶板弧三角形悬板结构的形成机理与控制技术[J].黑龙江科技大学学报,2018,28(2):142-147,180,7.基金项目
煤矿安全开采技术湖南省重点试验室开发基金项目(201401) （201401）
