A slidable filling dam has along the heading dam segments (4) articulated in a hinged roof-bar (7) of a mine lining. The slidable dam has near-floor beams (1) which are provided at their ends with terminal eyes (2) to connect two neighboring dam segments (4) at the point of their connection with footings (9) by means of bolts (10, 11). The near-floor beam (1) has in its central part at least one central eye (5) to fix a hydraulic ram (6) pulling up segments (4) of the filling dam.
申请公布号
US4406565(A)
申请公布日期
1983.09.27
申请号
US19810258703
申请日期
1981.04.29
申请人
CT KT MASZYN GORNICZYCH KOMAG
发明人
PRETOR, WINCENTY;SKOCZYNSKI, WOJCIECH;JANIK, EDWARD;ZYCH, HENRYK;SERWOTKA, RYSZARD