公开(公告)号：US3640580A

公开(公告)日：1972-02-08

申请号：US3640580D

申请日：1969-07-24

申请人： LETCHER T WHITE

发明人： WHITE LETCHER T

IPC分类号： E21C27/02 ,  E21C35/16 ,  E21C35/22 ,  E21C41/18

CPC分类号： E21C35/22 ,  E21C27/02 ,  E21C35/16

摘要： A coal-mining apparatus is fed against a vein of coal under pressure and advanced through the vein to progressively mine the coal. Back of the mining apparatus is arranged a board or partition which extends from the floor to the roof of the mine and combines with the floor and with the veil of coal to form a compartment. Means is provided, associated with the compartment referred to, for minimizing or eliminating light floating dust, this being done either by spraying through the air in the compartment or by exhausting air therefrom. The invention further comprises a method of coal mining wherein the mining operation takes place in a confined space, and, during the mining operation, coal dust is constantly eliminated from said confined space.

摘要翻译： 采煤机采取压力煤矿脉，通过静脉进行逐步采煤。 采矿设备的后面布置有从地板延伸到矿井的屋顶的板或隔板，并与地板和煤面组合形成隔间。 提供了与所涉及的隔室相关联的装置，用于最小化或消除轻浮尘，这是通过喷射通过隔室中的空气或通过从其中排出空气来完成的。

公开(公告)号：US3524680A

公开(公告)日：1970-08-18

申请号：US3524680D

申请日：1968-10-22

申请人： LETCHER T WHITE

发明人： WHITE LETCHER T

IPC分类号： E21C25/06 ,  E21C41/18 ,  E21C25/68

CPC分类号： E21C25/06