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公开(公告)号：US2420755A
公开(公告)日：1947-05-20
申请号：US54543244
申请日：1944-07-18
申请人： JOY MFG CO
发明人： BRIDIE MAVOR JOHN
CPC分类号： E21C27/14 , E21D23/0073
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公开(公告)号：US08920074B2
公开(公告)日：2014-12-30
申请号：US12377725
申请日：2007-08-14
摘要： An underground mining apparatus includes a mining head for moving through underground material to extract material in its path and form a passageway behind the mining head as it advances. An elongate structure extends along the passageway to the mining head and provides a path for delivering the extracted material to ground surface. A shroud is positioned about the elongate structure for supporting engagement with the periphery of the passageway and to provide a space through which the elongate structure can move. The shroud has a cross-sectional shape corresponding generally to the cross-sectional shape of the passageway formed by the mining head. A method is also disclosed.
摘要翻译： 一个地下采矿设备包括一个采矿头，用于通过地下材料移动，以在其路径上提取材料，并在采矿头前进时形成通道。 细长结构沿着通道延伸到采矿头，并提供用于将提取的材料输送到地面的路径。 围绕细长结构定位护罩，用于支撑与通道周边的接合并且提供细长结构可以移动的空间。 护罩具有大致对应于由采矿头形成的通道的横截面形状的横截面形状。 还公开了一种方法。
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公开(公告)号：US20240247588A1
公开(公告)日：2024-07-25
申请号：US18560823
申请日：2022-05-19
发明人： Shuo LU , Habib SARIDIKMEN
CPC分类号： E21C27/14 , E21C27/128
摘要： This disclosure relates to a method of mining a rock formation using a disc cutter and a rock breaker tool. Several examples of rock breaker tool are provided, including mini disc cutters and a form of hydraulic striker. The tool is inserted into slits cut into the rock by the disc cutter and activated, causing crack initiation and propagation in the rock.
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