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长锚索是矿山岩层支护的一项新技术。它可以锁住岩层,限制岩层产生变形与位移,悬吊顶板“危岩”,改变岩层特性,提高岩体稳定性。 (一)长锚索支护原理巷道开挖后,其围岩有逐渐收敛的趋势。这个收敛过程包括单个岩块的移动和松驰,节理的膨胀。众所周知,岩体强度是取决于节理岩块排列的相互结合程度以及节理、断层面的粗糙度等因素。这样,巷道周围单个岩块的相互移动降低节理岩块之间的结合强度,导致岩块旋
Long anchor is a new technology of mine rock support. It can lock the rock formation, limit the deformation and displacement of the rock formation, suspend the “dangerous rock” of the roof, change the rock properties and improve the stability of the rock mass. (A) The principle of long cable support After roadway excavation, the surrounding rock has a gradual convergence trend. This convergence process involves the movement and relaxation of individual rock masses, the expansion of joints. It is well-known that the strength of rock mass depends on the degree of mutual alignment of joints and the roughness of joints and faults. In this way, the mutual movement of individual rock masses around the roadway reduces the bond strength between the joint rock masses, resulting in rock mass rotation