The combined support with cablebolt wire mesh and shotcreting is applied in coal roadway in Xingan coal Mine of Hegang Mining Industry Group.
鹤岗矿业集团兴安煤矿在煤巷中应用锚索锚杆挂网喷喧支护，取得了较好的技术经济效果。
2
We use homemade bolt puller to preload the clamp bolt, which more accurately controls the preload of the clamp bolt, and ensures the clamp's holding effect on the main cable.
采用自制螺栓拉拔器对索夹螺栓进行预紧，更加精确地控制了索夹螺栓的预紧力，确保索夹对主缆的握紧效果。
3
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.