Mine gob filling and entry retaining device system and filling method

Abstract

The invention discloses a mine gob filling and entry retaining device system and a filling method. A workshop is arranged at the rear end of a hydraulic support, a lifting side protecting plate and a fixing side protecting plate are disposed on a side of the workshop and are close to a gob, a rubber pad is inlaid at the top end of the lifting side protecting plate, a flexible isolation mold barrel is wound around the top end of the rubber pad to enter the gob on the rear of the hydraulic support, two layers of high-strength fiber cloth are sewn to form the flexible isolation mold barrel, a filling barrel is arranged in the second layer of high-strength fiber cloth, a filling conveying pipe is inserted into the filling barrel and is connected with the filling barrel in a bound manner, components of the isolation mold barrel are continuously connected by sewing threads by the aid of a portable sewing machine, a plurality of rows of single bodies are disposed in a retained roadway to support and limit the flexible isolation mold barrel, filling materials are filled into the flexible isolation mold barrel of the gob from the filling barrel via the conveying pipe, a roadway is retained in the gob during filling of the materials, and coal mining without pillars is realized. The mine gob filling and entry retaining device is simple in structure, low in cost, fine in isolation and fast in speed, and is widely used in industries including coal mines, metallurgical mines and the like, and personnel do not operate in the gob.

Description

technical field [0001] The invention relates to filling and gob-side entry retention in mine goafs, in particular to a device system and filling method for mine goaf filling and entry retention. Background technique [0002] People mined useful ores from the ground and transported them to the ground. At this time, a large area of ​​goaf was left underground. Due to the pressure of the mine, the ground subsidence formed above the goaf, especially in rivers, railways, Villages are more affected. For this reason, when mining passes through the above-mentioned areas, in order to prevent the ground from sinking in the goaf, people fill the goaf. There are many methods for filling the goaf. Traditional filling There are two methods of solid material filling and fluid material filling. The transportation of solid filling materials is more difficult, while filling of fluid materials requires templates. For example, Chinese patent application number 200910185319.5 provides a bag-type...

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Problems solved by technology

[0003] The above-mentioned goaf bag filling method has the following problems: the flexible filling bag is hung by multiple monomers, and a rigid formwork is formed around the flexible filling bag, and is fixed by the monomer pillars, and the monomer and the rigid formwork Difficult to carry, difficult to set up the formwork; need to fill multiple flexible filling bags, and the delivery pipe needs to be connected and disassembled frequently, which is a lot of labor; the front, rear, left, and right parts of the flexible filling bags overlap each other, resulting in a large amount of consumption and high price; flexible filling bags Air tube cloth is used, the material strength is low, and one leak causes the whole volume of slurry to leak, which is difficult to adapt to large-volume filling; a large number of construction workers hang bags, erect single pillars, and splice rigid formwork in the goaf, making safety management difficult; the above The goaf bag filling method is difficult to meet the needs of large-scale mining, which affects the recovery speed

[0004] At present, because there is no good isolation means for filling mining, the whole working face is generally used for filling. The two parallel grooves of the next working face need to be excavated again, which wastes manpower and material resources. However, the filling and retaining roadway can save the excavation of the next working face. Along the trough, and recover coal pillars, ease the tension in mining

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