Roadway blasting wave leakage and stone prevention device, and use method thereof

Abstract

The invention discloses a roadway blasting wave leakage and stone prevention device which is composed of a semicircular arched steel frame, sliding tracks, a lifting winding shaft and standing wires.Rubber woven blasting protection quilt is embedded into the semicircular arched steel frame, and the vault and bottom of the frame are provided with a rolling wheel separately; the sliding tracks arefixed to surrounding rock through anchor rods on the vault and both shoulders of a roadway; the lifting winding shaft is installed at the lower part of the semicircular arched steel frame, and the winding shaft is connected to the rubber woven blasting protection quilt; the right end of the winding shaft is provided with a gear on which a chain block is wound, and the chain block is pulled to drive the lifting winding shaft to rotate, so that the rubber woven blasting protection quilt is driven to rise and fall; buffer buckles are arranged in the middle of the standing wires, and hung at bothends of the bottoms of the semicircular arched steel frame and the liftable rubber woven blasting protection quilt; and the anchor rods with small holes on the ends of the surrounding rock on both sides of the roadway are hooked on the ends of the standing wires. The roadway blasting wave leakage and stone prevention device can be moved to any position in the roadway easily, and the rubber woven blasting protection quilt used for shielding can be lifted upon completion of blasting; manual removal is avoided, and the labor force is reduced; and the working efficiency is improved greatly.

Description

technical field [0001] The invention relates to the technical field of coal mine roadway blasting and excavation construction, in particular to a blasting flying stone protection device. Background technique [0002] The construction methods of coal mine roadway excavation are mainly divided into two types: drilling and blasting method and roadheader comprehensive excavation method. Drilling and blasting method has the advantages of fast operation preparation, strong adaptability to rocks, flexible movement, and easier handling of technical failures and geological faults. Moreover, it has the advantages of high work efficiency and low cost, and occupies a large proportion in rock roadway excavation. However, a large number of flying rocks will be produced during the blasting process, which seriously threatens the life safety of blasting personnel. It is very necessary to take appropriate protective measures for flying rocks before blasting construction. At present, steel wi...

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Problems solved by technology

[0003] The utility model with the patent number ZL201521039891.8 discloses a new type of flying stone blasting protection device, which includes four layers of gun cover, steel wire mesh on both sides and outer water bag, the assembly and lapping process is relatively complicated, and the method of manual handling is adopted to move, greatly reducing work efficiency

[0004] The utility model with the patent number ZL201620167632.1 discloses a steel wire mesh protective device, which uses a combination of steel wire rope, reinforcing ribs and springs to protect against flying stones, but the cost of steel is higher than that of waste rubber braids and the weight is heavy Difficult to assemble and transport

[0005] The utility model with the patent number ZL201520806154.X discloses a blasting protective door, which is composed of reinforcement ribs, rubber door panels and running mechanisms; although this utility model can better block blasting flying stones, the bottom plate during tunnel construction It is often uneven, and the arrangement of the running system at the bottom of the protective door increases the difficulty of the overall movement of the protective door, and no detailed solutions have been made for the fixing of the protective door before construction

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