Roadway drivage advanced telescopic cantilever support device and construction method thereof

Abstract

The invention discloses a roadway drivage advanced telescopic cantilever support device and a construction method thereof. The roadway drivage advanced telescopic cantilever support device comprises an electro hydraulic control system, a pump station, a crossheading support, a telescopic arm and a top-support grid plate; the crossheading support is formed by connecting four section support units in two rows and two columns through a horizontal oil cylinder and a longitudinal oil cylinder, and each support unit is composed of a top beam, a base, a stand column and a four-bar linkage; and the front portions of the bases of the support units in the front row are connected with one end of the telescopic arm, and the other end of the telescopic is connected with the top-support grid plate and an advanced suspended stand column. As the driving of the roadway drivage machine, the telescopic arm extends to support the top. According to the roadway drivage advanced telescopic cantilever support device, a wide range of temporary support for roadway drivage is provided, the support strength is high, anchor bolts and anchor ropes in multi rows can construct parallel, the technological requirement of one-drivage multi-anchoring is met, the staff operate under the full support condition, the safety is high, the roadway driving cost is reduced, and the construction speed is increased over 70%; and the device is suitable for the fields of coal mines, metallurgy mines, underground construction, tunnel construction and the like.

Description

technical field [0001] The invention belongs to the technical field of coal mine roadway excavation, and in particular relates to a roadway excavation advance telescopic cantilever support device and a construction method thereof. Background technique [0002] Coal occupies a major position in my country's energy consumption structure, improving coal production efficiency and realizing safe and efficient mining is the goal that my country's coal enterprises have been pursuing. As a main content in coal mining, tunneling is an important factor related to coal production efficiency. At present, the tunneling and tunneling speeds of most mines in my country are between 100 and 400 meters per month, and those that can reach more than 300 meters per month belong to a relatively fast level. Now, the mining progress of many coal mining faces has reached 300 to 500 meters. m / month, and a coal mining face has two joint roadways and cutouts arranged along the trench with an interval o...

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Problems solved by technology

[0004] At present, the commonly used temporary support method is to install a temporary support device on the cutting part of the fully mechanized excavator. This temporary support device has the following disadvantages: the size and structure are limited, and it cannot be supported in a large area; the support strength is low , the initial support force is only 1 ton, which cannot meet the support strength requirements; when laying the net, the temporary support device is retracted, and the roof is exposed, which poses a great safety hazard; Jacking and tunneling interfere with each other

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