Single hydraulic prop is one of the important support equipment in the coal mining industry, which is indispensable in many coal mines. The following is our technical staff in the use of the special collation of the advantages, here we are not for publicity, but really have a lot of advantages. And its advantages are very close to the needs of the work.
1. Constant working resistance
The working resistance of the single hydraulic prop is relatively constant, and the rated working resistance can be achieved under the condition of small roof subsidence. Due to the thick coal bottom and soft coal bottom, the initial support force of the pillar after wearing shoes can basically meet the requirements. With the coal mining work, the bottom coal is compressed and the coal bottom is soft, resulting in the work resistance of the pillar becomes smaller. The initial support force of single hydraulic prop is larger, each prop can bear the load more evenly, it can quickly achieve higher working resistance, greatly improving the roof maintenance. In addition, the single hydraulic prop can resist the initial pressure of the old roof more effectively during the initial ejection period, avoiding the instability of the support under dynamic pressure and the failure of the pillar due to poor engineering specifications and quality resulting in the big ejection and section accident.
2. Improve work efficiency
Because the connection of single hydraulic prop adopts the pin hinge mechanism of metal roof beam, its structure is easy to hinge and disintegrate, making the working procedure of hitting and returning column as simple and feasible as ordinary single hydraulic prop, and strong versatility. The lifting and lowering of the single hydraulic prop are accomplished by the hydraulic system. The retracement and installation of the internal pillar can be completed by only pulling the handle, using the external pillar to inject the liquid from the outside with the injection gun, and pulling the discharge valve to drain the liquid, etc. The speed of the internal pillar is generally about twice higher than that of the friction pillar.
3. Save coal resources
When single hydraulic prop is used on coal face, the height of coal face is increased. Face after the use of individual hydraulic prop, to a certain degree of increased ten thousand tons of tons of coal cost and drivage rate, improve the production capacity per unit area, individual hydraulic prop mining height are broken will be increased by 0.8 m, when the working face in prop-pulling before digging coal, to face the biggest mining height are broken up to 3.5 m, has realized face a mining overall height of purpose, not only save mining resources, but also can improve the efficiency of recycling.
4. Increase security
The support effect of the single hydraulic prop is good, the integrity, the stability is strong, can effectively prevent the collapse of the roof accident, at the same time also reduces the pillar due to the uneven compression of the wind, the tilt, the large pillar to the same direction. Moreover, due to the high initial support force and the roof contact is tight, the retraction and installation speed is fast, the control roof effect is good, the working face advance speed is improved, the roof collapse accident is significantly reduced, the gas concentration in the goaf is reduced, the safety production is promoted, and the wood consumption is correspondingly reduced.
