关键词: 急倾斜煤层, 下端头区, 巷旁充填, 顶底板锚索, 充填体承载

Abstract: Combining theoretical analysis, practice and actual measurement, a retaining roadway for the next sublevel technological theory of end zone below steep inclined coal seam and systematical technology were discussed; the influencing factors of the forces posed on the filling object were obtained, and a filling technique that applies to steep inclined coal seam was brought forward. The research shows that loading capacity of roadside packing adjacent to steep inclined coal seam is affected mainly by the effective length of the gob gangue, inclination angle of coal seam, designed width of filled architecture, and the thickness of coal seam, whereas it is less affected by installed anchor of roof and floor. The deformation rule of bearing gangue reveals stage characteristics under the uniaxial compress, and the stress retain a nearly linear relationship with strain during every stage. The bearing capacity and deformation of backfilling matter are notably dependent on working distance, displaying different characterizations as follows: the closer the backfilling matter is to the work face, the smaller the deformation rate of backfilling matter is. The field practice in Xinqiang coal of Qitaihe city demonstrates that, the concrete filling process system of gangue in sharply steep coal seam can be expediently carried out and conveniently operated, and the overall effect of gob is obvious.

Key words: steep inclined coal seam, end zone, roadside packing, roof and floor anchor, backfilling bearing