Hydraulic support capable of realizing top coal caving and filling operation

Abstract

The invention discloses a hydraulic support capable of realizing top coal caving and filling operation. The hydraulic support is a support filling device used for mining unexploited coal 'below a building, a railway and water and above pressure-bearing water', the hydraulic support comprises two groups of bases and top beams, the bases are hinged to the top beams through four vertical columns, a tail beam is hinged to the rear end of each top beam, the angle of each tail beam is changed by a tail beam jack, a baffle is hinged below each tail beam, the baffles and the tail beams can be closed, and an inserting plate and an inserting plate jack are arranged on the inner side of each baffle. The top of a gob can be supported, and the top beams and the tail beams further can serve as top coal caving channels when a top coal bed is minded. When the gob needs to be filled, the tail beams can function in supporting the top of the gob, the tail beams, the baffles and the inserting plates jointly function as a box plate, and the hydraulic support is used for filling water rapid-solidifying materials and other filling materials.

Description

technical field [0001] The invention relates to a support device used in underground mines, in particular to a support device capable of realizing top-caving coal mining and filling operations. Background technique [0002] my country is rich in coal resources, fully mechanized mining equipment is mature, and coal mining technology is becoming more and more perfect. With the acceleration of coal mining in my country, many mines are facing the problem of resource depletion. Become the focus of people's mining attention. At present, the mining of coal seam is generally first mining. After the shearer advances for a certain distance, the mining is stopped, and the top or side of the mined part is supported. Mining "three-down" coal pressing requires timely filling of the coal seam space (goaf) that has been mined, otherwise it will cause collapse. Therefore, coal mining involves a lot of research on filling mining technology. However, there are still some shortcomings in the c...

AI Technical Summary

Problems solved by technology

However, there are still some shortcomings in the current technology of filling and mining. For example, filling cannot be carried out during coal mining, and coal cannot be mined during filling, which seriously restricts the mining progress.

For the working face using top-coal caving mining, there is no filling measure at present, especially when the working face has to be filled in special areas (such as high-voltage lines on it), the work has to be stopped and another working face is opened, but another The investment in the working face is obviously too large; if the hydraulic support can not only meet the support requirements of ordinary top-coal caving mining, but also meet the filling requirements of special sections, such a problem can be solved

Images