Roadway support method for soft broken rock masses of underground mine
The invention discloses a roadway support method for soft broken rock masses of an underground mine, which is suitable for roadway support engineering with weak rock mass weathering, hammer knocking hoarse sound and a rock mass strength value less than or equal to 10 Mpa. Advance supporting anchor r...
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| creator | XU CHUANHUA LIU YUNQIU XIE ZHIMOU LI QING SUN GUOQUAN JING LIXIANG WANG LIANG XIAO YIGAI LI NING |
| description | The invention discloses a roadway support method for soft broken rock masses of an underground mine, which is suitable for roadway support engineering with weak rock mass weathering, hammer knocking hoarse sound and a rock mass strength value less than or equal to 10 Mpa. Advance supporting anchor rods are arranged along the arch part of a roadway, and additionally, pipe seam type anchor rods which are constructed at different footage driving cycles are mutually overlapped, so that the support effect on the soft rock masses is good; the section of the initial roadway is designed to be in the form of a three-centered arch and an inverted arch, then anchor rod advance support is performed, i.e. the pipe seam type anchor rods in the advance support anchor rods are inserted into the arch part of a roadway top plate by 1.5 m and are exposed by 1 m, each footage driving cycle does not exceed 1 m, the exposed part protects personnel to safely work below the support, then anchor net jet primary support is performed, |
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| subjects | EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS |
| title | Roadway support method for soft broken rock masses of underground mine |
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