System and method for dry filling of mined-out areas

Abstract

The invention discloses a system for dry filling of mined-out areas. The system comprises a storage bin and a laneway which are arranged on the ground, wherein a discharge hole of the storage bin is connected with a reversed loader arranged at the end of a coal face by means of a tubular belt conveyor arranged in the laneway; a filling support is arranged on the coal face, and a scraper conveyer is arranged on the filling support; the scraper conveyer is arranged on a working platform on a base of the filling support; the scraper conveyer is in lap joint with the reversed loader; a discharge opening is formed in a scraper slot of the scraper conveyer. The system provided by the invention realizes parallel operation of coal mining and filling, and is high in solid waste disposal capacity, long in transport distance and high in yield of a filling working face. The filling method provided by the invention is small in amount of solid waste transportation work, less in project investment, short in duration and environmentally-friendly.

Description

technical field [0001] The invention belongs to the technical field of coal mine filling and mining, in particular to a coal mine goaf dry filling system, and the invention also relates to a coal mine goaf dry filling method. Background technique [0002] At present, solid wastes such as gangue, coal slime, fly ash produced in the process of coal mining, washing and power generation in our country, and waste slag produced in coal chemical industry are generally piled on the ground. These solid wastes occupy land and pollute the environment. These solid wastes need to be returned to the well for filling, so as to realize the green filling mining of coal mine loss reduction. [0003] The existing coal mine dry filling mining technology mainly has the following problems: (1) Ordinary belt conveyors are generally used to transport filling materials, which occupy a large space, the materials cannot be closed, and there are deviations. It can be conveyed in a straight line, and t...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a dry filling system for gobs in coal mines, which uses the existing shafts to return solid waste to the wells for filling under normal coal mining conditions, and solves the problem that ordinary belt conveyors take up a lot of space for conveying materials. Can not transport materials in a closed manner, cannot transport materials in a three-dimensional space curve; solve the problems of coal mining and filling that cannot be paralleled due to the suspension of the filling scraper conveyor by the conventional filling bracket, and the limited solid waste treatment capacity, solve the problem of installation, use and Inconvenient maintenance, poor safety, not suitable for large-scale modern mine large-scale filling mining and other problems

[0005] Another object of the present invention is to provide a dry filling method for gobs in coal mines, which solves the problem that coal mining and filling cannot be performed in parallel in the existing dry filling method, the safety of operators and equipment is poor, the output of the working face is low, and the filling efficiency is low. The problem of small solid waste treatment capacity

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