School of Resources and Safety Engineering,China University of Mining and Technolog(Beiing)

为了解决高地应力软岩巷道矿压显现剧烈及支护难度大的问题,采用理论分析和数值模拟的方法,提出了软岩巷道长短锚杆协调支护技术,结果表明:可接长锚杆与普通锚杆搭配使用,可协调长短锚杆与围岩的相互作用力,不仅保证了围岩具有较高的支护强度,而且可以适应软岩巷道的大变形。长短锚杆协调支护技术在蒲河煤矿应用表明,该技术能较好的支护巷道,可将巷道顶板的变形量控制在100~200 mm,应用效果表明长短锚杆协调支护较好的适应了顶板的大变形,对围岩具有较好的控制作用。

In order to solve the serious mine strata pressure behavior and high support difficultyt of a mine high geostress and soft rock road-way,a theoretical analysis and numerical simulation method were applied and a long and short bolt coordinate support technology of themine soft rock roadway was provided. The results showed tha t a collocation utilization of the connectable long bolt and conventional bolt andan interaction force of the coordinated long and short bolt and the surrounding rock would n ot only ensure the surrounding rock with a highsupport strength,but also could be suitable for the large deformation of the mine soft rock roadway. The application of long a nd short boltcoordinate support technology to Puhe Mine showed that the technology could well support the mine roadway and could control the roof de-formation value of t he mine roadway within 100 ~ 200 mm. The application effect showed that the long and short bolt coordinate supportcould well fit the large deformation of the roof and coul d have a well control role of the surrounding rock.

国家自然科学基金资助项目(51234005)；