中空注浆锚索在沿空留巷支护中应用

 摘要 本文主要介绍一种新型全长锚注锚索的作用机理、结构特点以及在现场的试验情况。在软弱顶板条件下的巷道支护，推广全长锚固技术，是锚网索支护的一个进步。和端锚相比，锚注锚索在强化了锚索在挤压加固、多层组合拱以及注浆等方面的作用。 新型锚注锚索研制成功后，在高河矿井下沿空顺槽进行了现场试验，取得了良好的支护效果和经济效益，和端锚支护的巷道相比，巷道变形量明显减小，控制了顶板深部离层，节约了用于二次支护和补强支护成本。

Innovated fully grouting cables and the application for supports of gob-side gateroad

An innovated new type of fully grouting cable was introduced in the paper. Its function, structures and trial practice were described. Under the condition of broken roof and high stress zones, the fully anchored cables have more advantages than point anchored cables due to its effects in reinforcement, beam arch and post grouting effect. The innovated grouting cables were trialed at Gaohe underground and sound supporting effects has been achieved. By using the fully grouting cable to strengthen the roof and ribs, the deformation of roof and ribs was reduced. The deeper level of roof separation was diminished. The use of fully grouting cable has greatly saved the cost of using secondary and supplementary supports.