Safety protection device for tunnel blasting

Abstract

The invention discloses a safety protection device for tunnel blasting in the technical field of tunnel blasting, and the safety protection device comprises a blasting point protection plate and two side baffles which are mutually fixed to define a vertical protection enclosure with three closed surfaces and one open surface, and the two side baffles are erected on the left side and the right side of the blasting point protection plate; a lifting mechanism, a water storage tank, a protective top plate, protective side plates and a supporting shell are further arranged to perform structural protection on tunnel blasting, the height of the protective top plate can be adjusted according to tunnels with different heights, the device can be suitable for blasting protection of more tunnels with different heights, and the device is of a blasting protection structure with wider adaptability and is worthy of popularization and application. According to the device, dust falling can be achieved through water spraying, tunnel flying dust generated after blasting can be removed as soon as possible, the tunnel blasting condition can be observed conveniently, the sight line is better, the device can roll more conveniently through the rolling wheel assemblies, and the distance between rolling wheels can be adjusted so that the device can be suitable for different road conditions.

Description

technical field [0001] The invention relates to the technical field of tunnel blasting, in particular to a safety protection device for tunnel blasting. Background technique [0002] Tunnels are the key and key projects in the construction of highways and railways. With the development of railway construction and the advancement of science and technology, tunnel excavation methods have been developed rapidly. The more commonly used excavation methods are drill and blast method, shield method and roadheader. Because the drill and blast method has strong adaptability to geological conditions and low excavation cost, it is especially suitable for the construction of hard rock tunnels, broken rock tunnels and a large number of short tunnels. Therefore, the drill and blast method is still a commonly used tunnel excavation method at home and abroad. , there is a close relationship between the tunnel excavation method and the tunnel blasting scheme. The tunnel excavation method is ...

AI Technical Summary

Problems solved by technology

[0003] Some protective devices for tunnel blasting build a frame and fix protective plates outside the frame and on the top to protect the soil or rock mass at the top of the tunnel and support the soil or rock mass on both sides of the tunnel through the side plates, but The width of the ground that can be moved in the tunnel is different. Some of these protection devices are equipped with rollers at the bottom. When blasting, only rely on the sliding wheel to contact the ground, resulting in a small contact area between the safety protection device and the ground, making the safety protection device less stable, and the support strength of the roller is not enough, it is easy to move when it is impacted by the blasting, which is not convenient For protection, at the same time, large dust will be generated during blasting, which will affect the health of the staff, affect the sight of the staff, and cause inconvenience

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