A roof fall accident that was caused by bolt support is analyzed. The influence of the lane fault to bolt (cable) is pointed out. It has a certain reference for support selection of the same lanes.
对锚杆支护引起的一起冒顶事故进行了分析，指出了顺巷断层对锚杆(索)支护的影响，对同类巷道的支护选择具有一定的借鉴意义。
According to the numerical analysis results, the axial force distribution of bolt have been studied, the differences between bolt for pull test and for supporting have been pointed out.
依据数值计算结果对端部锚固及全长锚固锚杆的轴向作用力的分布特征进行了分析，指出了拉拔试验锚杆与支护中的锚杆以及端锚锚杆与全锚锚杆的区别。
The application of bolt support in No. 2 seal of Xiyu mine and its spreading is introduced; its benefit and problems are also pointed out.
介绍煤巷锚杆支护在西峪煤矿2号煤层的应用及全面向其它煤层的推广使用，并指出了锚杆支护的效益及尚需解决的问题。
To fix or secure (a nail or bolt, for example) by bending down or flattening the pointed end that protrudes.
敲弯，敲平，通过弄弯或弄扁突出的一端来固定(如钉子或螺丝钉)。
The testing methods on extension of anchor bolt are introduced. The whole deformations of normal bolts under pretensioning and its effect on the jacking of surrounding rock are pointed out.
通过对锚杆延伸性能测试方法的介绍，计算出了几种常用锚杆在预紧加固条件下的整体变形量，并结合井下实用情况指出不同性能锚杆对围岩加固的影响。
The testing methods on extension of anchor bolt are introduced. The whole deformations of normal bolts under pretensioning and its effect on the jacking of surrounding rock are pointed out.
通过对锚杆延伸性能测试方法的介绍，计算出了几种常用锚杆在预紧加固条件下的整体变形量，并结合井下实用情况指出不同性能锚杆对围岩加固的影响。
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