Coal bulkhead of circular coal yard

Abstract

The invention discloses a coal bulkhead of a circular coal yard. The coal bulkhead is of a continuous integrated structure; prestressed reinforcing bars are sectionally arranged every 45-80 degrees along the circle of the coal bulkhead, and are connected and tensioned by tensioning units. Since the coal bulkhead is of the continuous integrated structure with prestress applying sectionally and no vertical temperature joints are formed along the circle, coal piling side pressure applying on the coal bulkhead and horizontal thrust of roofing gird structures are utilized effectively through circular tension of the coal bulkhead, buttresses are omitted, engineering of the coal bulkhead and floor occupation of the coal yard are reduced effectively. By the aid of the prestressed reinforcing bars, 5-10% of circular reinforcement usage of the coal bulkhead is reduced, and thus, construction cost of the coal bulkhead is saved greatly, and high economical benefit is achieved.

Description

technical field [0001] The invention relates to the field of large circular coal yards, in particular to a coal retaining wall for circular coal yards. Background technique [0002] Circular coal yard: The circular coal yard is composed of a ring-shaped concrete coal retaining wall and a steel structure space grid dome on the top, which is used to store raw coal. A cantilever stocker and a pitching scraper reclaimer that revolve around the central column are installed inside. The raw coal is fed from the top of the stacker-reclaimer, piled into the coal yard through the rotary stacker, and reclaimed by the scraper reclaimer to the underground coal hopper in the center of the coal yard, and passes through the coal feeder and coal conveyor belt under the coal hopper The machine discharges from the bottom. In the process of storage and reclaiming, the coal yard system has good environmental protection performance without dust escape, and generally adopts centralized control o...

AI Technical Summary

Problems solved by technology

[0004] The reinforced concrete coal retaining wall of the existing circular coal yard adopts the structural form of the segmented buttress column coal retaining wall, which cannot take advantage of the beneficial effect of the circumferential tension of the coal retaining wall itself on the side pressure of the coal pile, resulting in a large wall section The amount of steel bars increases, and because the side pressure of the coal pile is mainly borne by the buttress columns, 36-40 buttress columns need to be installed in the approximate ring direction, and the cross-sectional size of the buttress columns is large, which will increase the area occupied by the circular coal yard and waste land resources, increasing construction costs

Images