Protective shed for tunnel blasting construction

Abstract

The invention discloses a protective shed for tunnel blasting construction. The protective shed forms a fan-shaped enclosure for a tunnel portal through gravity bases distributed at the position of the tunnel portal, then supports with inverted-L-shaped or C-shaped main body components are arranged on the gravity bases, a shielding protective layer which at least comprises an elastic hard fiber layer, an elastic soft fiber wave-absorbing layer and a sound-absorbing plate layer is covered on the support to form a protective shed cover for covering and shielding the tunnel portal, so as to effectively protect the periphery of the tunnel portal during tunnel blasting construction, and damage to the tunnel portal caused by shock waves, broken stones and blasting noise during tunnel blasting construction is prevented. The protective shed is novel and unique in design, convenient and easy to manufacture, low in cost, excellent in protection effect, high in practicability and good in expansibility, the safety of lives and properties of construction surrounding personnel can be guaranteed while the operation progress is guaranteed, social benefits are guaranteed while economic benefits areobtained for enterprises, and the protective shed has great popularization and application value.

Description

technical field [0001] The invention relates to a construction protective shed, in particular to a tunnel blasting construction protective shed used for safety protection at the tunnel opening during tunnel blasting construction, so as to effectively prevent shock waves, gravel, blasting noise, etc. Injury caused by personnel and the environment belongs to the technical field of tunnel construction protection. Background technique [0002] With the rapid development of infrastructure, there are more and more tunnel constructions, and they are becoming more and more complex. [0003] In tunnel construction, the drill-and-blast method is the oldest, most commonly used, and most common construction method. Due to its economical, simple, and reliable technology, it is determined that the drill-and-blast method will still be the preferred method for tunnel construction for a long time to come. One of the main construction methods. [0004] However, if Figure 4 As shown in the ...

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Problems solved by technology

[0009] In the prior art, most of the protective devices or protective sheds use a straight design, which can only protect against the gravel and other harmful objects flying out from the front of the tunnel opening during blasting construction, but fails to protect the surrounding medium and the tunnel opening during blasting. Effective prevention methods are proposed for the shock wave with strong vibration effect caused by the structure, blasting noise, flying stones around the tunnel entrance, etc., but the protection efficiency is not high, and these methods and devices are generally more complicated and the production cost is higher

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