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本文根据波立登公司的生产实践经验,对锚杆支护设计原理进行了论述.定点锚杆支护(Spot bolting)是瑞典岩石支护中应用最普遍的一种方法,锚杆布置要根据岩石局部条件来判断,然而,锚杆支护设计不仅要考虑技术条件,还要考虑经济因素,把可能的支护失败或生产故障、干扰所引起的经济冒险考虑进去.岩石破碎时,支护非常重要,在这种情况下建立起来的成本——效益关系表明,按一定模式支护比定点支护更可取.本文还叙述了锚杆长度和锚杆支护形式的选择准则.
In this paper, the design principle of bolt support is discussed according to the production practice of Polynom Co., Ltd. Spot bolting is one of the most commonly used methods in rock support in Sweden. The bolt arrangement should be based on rock However, the design of bolt support not only needs to consider the technical conditions, but also consider the economic factors, taking into account the economic risks caused by the possible support failure or production failure, interference, etc. When the rock is broken, the support is very Importantly, the cost-effectiveness relationship established in this case shows that it is preferable to support in a certain mode more than in point support. This article also describes the selection criteria for bolt length and bolt support.