With the development of engineering machinery, single hydraulic prop is also more and more widely known. The wide application of single hydraulic prop is closely related to its performance. However, in order for each column to maintain good performance at all times, it is necessary to establish strict and correct management measures at each stage.
1. Management before use
(1) for the intended use of the single hydraulic prop working face, first of all, according to the geological conditions of the working face and the necessary monitoring results correct selection. Only the proper selection, to give full play to the role of the pillar, good management of the roof.
According to the production mode of the working surface, the support plan, technical measures and safety operation rules are formulated and implemented after being approved by the competent department.
(3) according to the working face to establish the ledger. Its contents generally include: date of well down, quantity, type, damage, maintenance time and root order, measurement data of strut technical performance, etc.
(4) whether the new, old pillar, before the well must be tested one by one, qualified people can be down the well. In addition, in the process of pillar transport to pay attention to protection, to prevent the collision with other hard items, hit, hit, pressure, causing accidental mechanical damage.
To the operator before the training, qualified people on the job, put an end to the operation without a license.
2. Management in operation
Single prop working face, not allowed to mix with different properties, different specifications of the prop. Even if it is the same type of the same specification of the pillar, also want to pay attention to the operation of as far as possible to make their performance consistent, to ensure that every column to reach its initial support force. This is the key to manage the roof of the work face well.
Strictly according to the supporting procedures to ensure the quality of erection. Want column, row spacing even, achieve horizontal row, vertical row. The pillar should be supported by vertical roof and bottom plate, and should have the Angle of facing the mountain and the Angle should be appropriate.
(3) working face column and articulated roof beam to number management, to seat; The erection and management of the support workers shall be contracted by sections. According to the relevant provisions, mechanized working face is generally not allowed to shoot; When necessary, effective protective measures should be taken to prevent damage to the support. When the "dead column" appears on the working face, it is strictly forbidden to use the gun to collapse, do not allow to use winch to pull the column, should play a good temporary pillar, take local top, undercover to take it out.
(4) to the pillar of the injection, to pay attention to = three valve injection mouth is clean, generally should be washed after the gun injection.
(5) strict management of the emulsion, to ensure that its performance indicators and parameters compound requirements.
3. Maintenance management
Establish maintenance management system. In the process of underground support, attention should be paid to the damage of the single hydraulic prop. When the prop appears automatic unloading and descending column, the unloading valve fails, and the prop surface has obvious mechanical deformation or mechanical abrasion, which affects the action, etc., it should be repaired in time. After 6 ~ 8 months of continuous downhole use (mostly after the mining of one working face) or longer downhole storage time, the pillar should be lifted for maintenance.
The maintenance of the support must be tested, the content generally includes the operation test, load test, high, low pressure seal test.
