The single hydraulic prop is one of the important supporting equipment in coal mining industry, which is indispensable in many coal mines. It depends on its own advantages. Here are the advantages that our technicians specially organize when they use them. We don't want to publicize them here, but we do have many 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. Under the condition of small roof subsidence, the prop can reach the rated working resistance. Due to the thick and soft bottom of the abandoned coal, the initial supporting force of the pillar can basically meet the requirements after wearing shoes. With the advancement of coal mining, the bottom coal is compressed and the coal bottom is soft, resulting in the reduction of the working resistance of the pillar. The single hydraulic prop has a large initial supporting force, each prop can bear the load more evenly, it can quickly reach a higher working resistance, and greatly improve the roof maintenance. In addition, the single hydraulic prop can effectively resist the initial pressure of the old roof during the first caving, avoiding the instability of the bracket under dynamic pressure and the failure of the column due to the poor quality of the engineering specifications.
2. Improve work efficiency
Because the connection of the single hydraulic prop adopts the pin hinge mechanism of the metal top beam, its structure is easy to hinge and disassemble, which makes the process of driving and returning the prop as simple and feasible as the common single hydraulic prop, and has strong universality. The lifting and lowering of single hydraulic prop are completed by hydraulic system. The operation of withdrawing and erecting can be completed only by pulling the handle, using the injection gun to inject liquid from the outside, pulling the unloading valve to discharge liquid, etc. the speed of the internal injection strut is generally about twice that of the friction strut.
3. Save coal resources
When single hydraulic prop is used in coal face, the height of coal face is increased. When the single hydraulic prop is used in the working face, the production capacity per unit area will be increased, and the mining height of the single hydraulic prop will be increased by 0.8m, when the working face excavates the bottom coal in front of the pillar, the maximum mining height of the working face will be up to 3.5m, realizing the purpose of mining the full height of the working face at a time, not only saving the mining resources It can also improve the recovery efficiency.
4. Increase security
The support effect of single hydraulic prop is good, the integrity and stability are strong, which can effectively prevent the occurrence of collapse type roof fall accident, and at the same time, it can reduce the downwind, skew and large-scale prop inclined in the same direction caused by uneven pressure of the prop. Moreover, due to the high initial supporting force and tight contact with the roof, fast withdrawal and support, good effect of roof control, the advancing speed of the working face is improved, roof falling accidents are significantly reduced, the relative emission of gas concentration in the goaf is reduced, safety production is promoted, and wood consumption is correspondingly reduced.
