Year1
- 型号：
- 国标
- 尺寸：
- 国标
- 产地：
- 山东省兖州市
Profiled beams are also called profiled beams because their edges are jagged.
The length of the beam is determined according to factors such as the row spacing of the working face, the top caving step distance and the width of the working face or shearer stipulated in the operating procedures.
Arrangement of profiled beams
① As the main material for protecting the fixed beams, profiled beams should be arranged vertically to the coal wall of the working face, so as to effectively support the working face space and support the coal wall area in a timely manner to avoid empty spaces. During roofing operations, it ensures the safety of workers and prevents the roof steps from sinking.
② The beams should be used in pairs and moved forward alternately.
Coal mining method of profiled beam support
Profiled beam support method, that is, meter-long beam roots are used in pairs, that is, each basic support is a pair of profiled steel beams, and each profiled beam is used in pairs. There is a single hydraulic prop under the beam. Each pair of steel beams is divided into a main beam and a sub-beam. The lower one is the main beam and the top is the sub-beam. Main and auxiliary beam spacing, frame spacing, row spacing, minimum ceiling control distance, maximum ceiling control distance, mining height. ~. The forwarding method adopts the parallel forwarding method, that is, first move the main beam, the progress is meters, and then move the auxiliary beam and main beam Align them side by side, and so on.
Type long beam and long arm top coal caving mining is a mature mining method and has achieved good results during its application.
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