喷锚支护在矿山建设中已得到广泛应用,本文仅就锚杆的位置、角度与其受力状况谈几点意见。相同锚固力的砂浆锚杆用在不同位置及不同的角度上,它所能锚固的岩体重量并不相等。比如一个锚固力为P吨的锚杆,把它做在顶板 Shotcrete and rock bolt support has been widely used in mine construction. This article only talk about the position and angle of rock bolt and the stress situation. Mortar anchors of the same anchoring force are used at different positions and at different angles, and the weight of rock mass which can be anchored is not equal. For example, an anchor bolt P tons, it is done in the roof