Constant-support push-pull stepping self-moving type forepoling hydraulic support and supporting method thereof

Abstract

The constant-support push-pull stepping self-moving type advance support hydraulic support comprises an outer #-shaped frame top beam and an inner #-shaped frame top beam arranged in the outer #-shaped frame top beam, and a plurality of outer hydraulic props are arranged at the bottom of the outer #-shaped frame top beam in a rectangular array mode. A plurality of inner hydraulic props are arranged at the bottom of the inner #-shaped frame top beam in a rectangular array mode, the outer #-shaped frame top beam and the inner #-shaped frame top beam support each other and are arranged in a relative sliding mode in the front-back direction, and a stepping hydraulic cylinder with the center line in the front-back direction is arranged between the outer #-shaped frame top beam and the inner #-shaped frame top beam. Self-moving of the forepoling hydraulic support is achieved, constant supporting is also achieved while self-moving is conducted, the working efficiency of moving the forepoling hydraulic support is improved, and safety is also improved. The method is flexible to operate, high in construction efficiency, particularly suitable for being applied to construction of industries such as coal and highway tunnels as one of key auxiliary technologies, and good in application and popularization value.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety production, and particularly relates to a constant support push-pull step-by-step self-moving advanced support hydraulic support and a support method thereof. Background technique [0002] The excavation disturbance of the coal mining working face in the underground coal mine will cause the advance support pressure in a certain range in front of the working face. Certain advance support measures should be adopted to control the deformation of the surrounding rock of the tunnel along the working face, and avoid the upper and lower sloping tunnels. The support of the leading section of the trough is not timely and reasonable, resulting in instability and roof fall of the roadway, resulting in personnel safety accidents and economic and financial losses. During the mining of the coal mine working face, due to the influence of the advance support pressure, the advance support should be implem...

AI Technical Summary

Problems solved by technology

The price of a single column is more economical, but dismantling and moving, the labor intensity of the workers is high, and at the same time, due to the support needs of the advanced support, the single column is relatively heavy, and there is a potential safety hazard of hurting the workers

However, the special brackets for advanced support currently on the market have complex structures, poor mechanical reliability, and relatively high prices.

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