Roadway support device for dynamic pressure roadway and retaining roadway along goaf
A technology of roadway support and empty roadway retention, applied in pillars/supports, mining equipment, earth-moving drilling, etc., can solve the problems of large construction, cumbersome, slow operation, etc. quick effect
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[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
[0018] The embodiment of the present invention provides a roadway support device for dynamic pressure roadway and gob-side entry retaining, such as figure 1 , 2 As shown, the device comprises: a hollow steel pipe support 5, the hollow part of the hollow steel pipe support 5 is a concrete accommodating space, the lower part of the hollow steel pipe support 5 is provided with a grouting port 3 communicating with the hollow part of the hollow steel pipe support 5, the hollow steel pipe support The top of the pillar 5 is provided w...
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