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控制覆岩裂隙和地表沉陷的保水开采充填接顶方法
- Release time:2020-10-30
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Affilication of Author(s):
矿业工程学院Disigner of the Invention:
金志远,余孝民,wangfei,孙海State of Patent:
专利授权Application Number:
2014393124Authorization number:
2014393124Number of Inventors:
5Service Invention or Not:
noApplication Date:
2014-11-19Authorization Date:
2017-01-05First Author:
Ma Liqiang
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