Sentence examples for tail entries from inspiring English sources

Above the strata group, the breakage angles of the head and tail entries are 63° and 65°, respectively.

A GeoPen SE2404NT data acquisition system was used to collect seismic data from 300 g explosive charges fired by instantaneous electric detonator and located in the tail entry.

The average gas extraction from the working face is 43.17 % and the average gas concentration at the tail entry is 0.33 %, indicating of the effective gas extraction of the mine.

Along the head-entry and tail-entry, the breakage angle is 77° and 85°, respectively.

The maximum relative value of the compressive deformation is 2.08 % and is located on the sides almost above the tail-entry and head-entry.

The distance between the head-entry of panel 11124 and the tail-entry of panel 11223 is about 90 m and the pillar width between panels 11124 and 11224 is 7 m.

Table 2 Breakage angles of the stress-relief area Items Empirical value Numerical value Below the hard-and-thick strata Above hard-and-thick strata Breakage angle of tail-entry side  84858165 65 Breakage angle of head-entry side  76 76 76 63.

According to the Technical Criterion of Protective Coal Seam Exploitation (AQ 1050 2008) and the geotechnical conditions, the depressurized zones were calculated and the depressurized angles (approximately equivalent to breakage angles) were derived: 76° and 84° inside the head-entry and tail-entry, respectively.

Along the head-entry and tail-entry of panel 11223, the breakage angle (the angle between the direction of the breakage line and the dip line of the coal seam) is 72° and 81°, respectively, below the hard thick strata group.

Based on the mining sequence of the three longwall panels, the numerical simulation process includes three steps: (1) Excavation of panel 11224 of B4 coal seam after initial equilibrium of the model; (2) Driving the head-entry and tail-entry of panel 11223 of A3 coal seam; (3) Excavation of panel 11223.

These leaps come in three forms: forward leaps where the fish lands head first, similar jumps with a tail first re-entry or somersaults.