Steel ring type high-strength buttress column with built-in light material

Abstract

The invention discloses a steel ring type high-strength buttress column with a built-in light material. The steel ring type high-strength buttress column comprises a plurality of steel rings, wherein the steel rings are stacked vertically to constitute the buttress column, a steel pipe is arranged in each steel ring, located in the center of an inner ring of the steel ring and welded with the inner wall of the steel ring through reinforcing ribs or reinforcing rib plates, and each steel ring is filled with the light high-strength material; the steel pipes of every two adjacent steel rings are located on the same axis, horizontal displacement between every two adjacent steel rings is limited by inserting the same piece of round steel in the two steel pipes of every two adjacent steel rings, or the horizontal displacement between every two adjacent steel rings is limited by arranging a limit steel pipe in the steel pipe of the upper steel ring, the limit steel pipe is glidingly connected into the steel pipe through fixing pins, and the end surfaces of the fixing pins penetrate out of the wall of the limit steel pipe to be tightly contacted with the inner wall of the steel pipe. The construction technology is simple, the supporting strength is improved, the universality is high, and the steel ring type high-strength buttress column with the built-in light material has the characteristics of fire retardance and static electricity resistance and can be recycled.

Description

technical field [0001] The invention relates to a supporting device for roof support in coal mines, in particular to a steel ring-type built-in lightweight material high-strength stacking column. Background technique [0002] Roadway roof caving and working face caving are one of the five major disasters in coal mine production. Improper handling of the roof in the caving or caving area is prone to re-collapse of the roof, causing casualties and equipment damage, affecting the safe production of coal mines. At present, domestic and foreign coal mine underground methods to deal with roadway roof caving and working face caving mainly include: anchor mesh injection method, metal bracket wood stacking method, wedge method, etc., all of which require construction personnel to work on the roadway roof without support Underground operation, usually the roof of the roadway in the roof fall area is poor in lithology, loose and broken, and is prone to re-roof fall, causing secondary d...

AI Technical Summary

Problems solved by technology

[0002] Roadway roof fall and working face fall are one of the five major disasters in coal mine production. Improper handling of roof fall or fall area roof is prone to re-collapse of the roof, causing casualties and equipment damage, affecting the safe production of coal mines

At present, domestic and foreign coal mine underground methods to deal with roadway roof caving and working face caving mainly include: anchor mesh injection method, metal bracket wood stacking method, wedge method, etc., all of which require construction personnel to work on the roadway roof without support Underground operation, usually the roof of the roadway in the roof fall area is poor in lithology, loose and broken, and is prone to re-roof fall, causing secondary disasters. Therefore, it is difficult to guarantee the safety of construction personnel. construction insecurity

The metal bracket wooden stack method and the wedge wedge method use wood to connect the roof, which has the problem that the roof is not solid, and the wood is easy to rot in a humid environment, resulting in a lot of waste of wood resources, and the wood stack support requires a lot of manpower and complicated procedures.

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