Research Article
Study of Gob-Side Entry Retaining Technology with Roof Cutting under Upper Roadway Condition
Table 1
Basic parameters of the 43073 working face.
| | Coal seam thickness (m) | 3.6 | | Mining height (m) | 3.6 | | Strike length (m) | 400 | | Immediate roof/thickness (m) | Siltstone/1.45 | | Main roof/thickness (m) | Middle conglomerate/5.50 | | Depth (m) | 440–574 | | Dig angle/average dip angle (°) | 16∼20/18 | | Inclination length (m) | 170 | | Immediate floor/thickness (m) | Fine sandstone/6.00 | | Main floor/thickness (m) | Coarse sandstone/19.30 |
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