At present, part of the stope supported by hydraulic prop and SGWD-17 slab conveyor are used to form a working face. The working face and roadway width adopt 1.0-meter twisted roof beams and full-column and full-beam positive suspension support methods, which are approximately equal to the coal wall. The 0.5-meter-wide empty roof distance makes it possible for the umbrella eaves of the single hydraulic prop working face to fall.
Therefore, when a single hydraulic prop is used for support under the condition of a broken roof, the empty roof distance and empty roof time in front of the wall should be reduced as much as possible.
If we use hydraulic acrow props measures such as covering the top beams to make large slab beams to control the front empty roof in our daily management work, due to the large consumption of pit wood and complicated procedures, we will use semi-precision short top beams later, and the front empty roof width will reach 0.5 When the meter is high, a short top beam is hung on the top beam of the first row for temporary support. The short top beam is used in conjunction with hydraulic props, which has the advantages of convenient operation, timely support, and wood saving, thus effectively solving the working face void A big problem.
The hydraulic acrow props is very professional, so it must be operated by professional technicians when using it, or it can be used under the guidance of our hydraulic prop manufacturer.
