Blast shelters are one of the common protective measures used in mining blasting operations. These shelters are constructed from explosion-proof steel plates, lined with insulating wood boards and static-dissipative flame-retardant felt inside, featuring explosion-proof, static-dissipative, impact-resistant, and heavy-load-resistant properties.

1. The design standards for the anti-cannon shed include:

Structure: Equipped with 4 support legs at the bottom, fixed to the designated site, and 4 lifting rings at the top, which can be transported to the desired location using a crane.

② Material: The overall steel plate thickness is 1 cm, featuring a double-door design with locks on both sides. Ventilation holes are equipped with wire mesh to prevent flying stones. A single observation window is provided to monitor the blasting conditions.

③ Safety Distance: The anti-artillery shed must be installed outside the hazardous zone, usually set at over 200 meters. The placement and orientation of the shed require careful consideration to ensure effective protection against direct impacts from flying debris and the effects of gun smoke.

2. Adjusting blast parameters is also an important measure to reduce the generation of flying stones.

① Hole parameters: It's easy to generate flying stones in the direction of the resistance line, so the resistance line of the blast hole needs to be reasonably designed.

‌‌② Initiation Sequence: The boreholes initiated first create an open face for the subsequent ones, thus the order of initiation is directly related to the generation of flying stones.

③ Plug Length: Short plug length or poor plug quality can easily cause flying stones at the orifice. Controlling the plug length to be approximately equal to one times the resistance line can effectively reduce the occurrence of flying stones.

By properly utilizing blast sheds and adjusting blast parameters, the generation of flying rocks during mine blasting and the risk of injury to personnel can be significantly reduced.