波形钢腹板支架支护技术的研究进展综述

本文总结了国内外几种常用的金属支架(矿用工字钢、U型钢)和钢管混凝土支架等在截面优化设计和极限承载力等方面的研究,重点介绍了一种新型波形钢腹板支架支护技术.对比分析了波形钢腹板支架与其他支架相比在承载力和经济性方面的优势,及其在支架整体稳定承载性能、局部稳定性能、支架可缩性节点构造以及支架与围岩相互作用等方面的研究成果...

Review of research on steel support with corrugated webs

The research progress on optimistic analysis and ultimate bearing capacity of the conventional metal supports, such as mine I-beam, U-shaped steel and concrete filled steel tubes, is summarized. It especially focused on introducing a new type of steel support with corrugated webs. The advantages of steel support with corrugated webs in bearing capacity and economy compared with traditional supports, the global stability bearing capacity and local stability of the steel support structure with corrugated webs in different roadway profiles are introduced herein. It also reviews the research work and achievements on the yieldable connecting configuration, as well as the interaction between the support and the surrounding rock. It can be concluded that the prominent advantages of the support with corrugated web are its high supporting capacity and light weight, which is economical and greatly reducing the labor intensity. The two types of yieldable connecting components (high-strength bolts and wedge sleeves) are developed, which can solve the eccentricity issue of traditional one, besides, the surrounding rock load on the supports can be reduced through connection yielding and pressure relief, which could improve the stability and service life of the steel supports with corrugated webs. The research achievements have vital reference significance to the future development of new support structures for coal mine roadways with rock bursts.