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使用锚杆和加长锚杆对跨度达 1 2 m的工作面开切眼端头进行联合支护的实例证明 ,预应力加长锚杆在一些特殊的生产地质条件下使用具有安装快捷、安全可靠、成本低廉等优点 ,是一种有推广价值的支护形式。
The example of joint support with the open-cut ends of the working face with a span of up to 12 m using the anchor rod and the extended anchor rod proves that the pre-stressed extended anchor rod is used in some special production geological conditions with the advantages of quick installation, safe and reliable operation, Low cost and other advantages, is a kind of promotional value of the support form.