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Abstract The thickness of loose circle of Wangwa No. 2 Mine is 1.58 m, belonging to large circle Ⅳ class surrounding rock, the section applying metal net roof and support under net, the new support based on theory calculation and optimized roadway section was put forward. The surrounding rock stress distribution and displacement were testified by numerical simulation of new support parameters, the reasonable anchor wire rope coupling strengthening support was given, the practice showed that various indexes change was reasonable, with good support effect by the test of internal and surface displacement of surrounding rock, stress bolts and cables.
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