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发明公开
CN102317573A 屈服式锚杆及组件 失效 - 权利终止

屈服式锚杆及组件
摘要：
一种矿井顶板锚杆包括细长杆和聚合物涂层。细长杆具有第一端和第二端，该第二端具有从细长杆沿径向向外延伸的突出部分。聚合物涂层至少覆盖细长杆的第一端和第二端之间的一部分。细长杆能沿轴向相对于聚合物涂层移动。细长杆具有：第一位置，在此处细长杆相对于聚合物涂层具有预定的轴向位置；以及第二位置，在此处细长杆具有相对于第一位置移位的轴向位置。
摘要（英）：

A mine roof bolt includes an elongated rod and a polymer coating layer. The elongated rod has a first end and a second end with a protruding portion extending radially outward from the elongated rod. The polymer coating layer covers at least a portion of the elongated rod between the first and second ends. The elongated rod is movable relative to the polymer coating layer in an axial direction. The elongated rod has a first position where the elongated rod has a predetermined axial position relative to the polymer coating layer and a second position where the elongated rod has a displaced axial position relative to the first position.

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