A kind of tunnel smooth blasting method of surrounding eye water interval charging method

Abstract

The invention discloses a method for charging medicine at intervals in the surrounding eye water of tunnel smooth surface blasting, which comprises the following steps: 1. Determining the depth level of the surrounding eye; 2. Determining the number of drug segments in the surrounding eye to be charged; The charge amount of the medicine section and the number of medicine rolls; 4. Determine the number of water sections in the eye around the medicine to be filled; 5. Determine the number of tubular water bags in the water section and make tubular water bags; 6. Water interval medicine charging unit Seven, the filling of gun mud. The present invention adopts the charge section and the water section to form a water interval charge unit, which can effectively increase the energy utilization rate of the charge roll, improve the blasting effect, reduce the blasting cost, and effectively reduce the pollution of the blasting dust to the working face and the surrounding environment. A single full-volume medicine roll, sub-roll medicine rolls and tubular water bags are filled one by one into the surrounding eyes to be charged. The construction method is simple, easy to operate, reduces the construction steps, shortens the construction time, and reduces the labor intensity of the construction personnel. Effectively improve the charge efficiency and charge quality.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering blasting construction, and in particular relates to a method for charging explosives at intervals around the smooth surface blasting of tunnels. Background technique [0002] Tunnel excavation generally adopts smooth blasting. To achieve a good smooth blasting effect, it is necessary to design reasonable blasting parameters and a suitable charge structure. For the peripheral eye, the charge structure affects the effect of smooth blasting. The key factor. The peripheral eye adopts a non-coupling charge structure, and the charge structure of the commonly used peripheral eye includes the continuous charge structure of small cartridges, the interval charge structure of small cartridges, the continuous charge of photoexplosive cartridges, and the interval charge of ordinary cartridges. structure. The continuous charge structure of small cartridges, the spaced charge structure of small cart...

AI Technical Summary

Problems solved by technology

At the same time, when ordinary charge rolls are used to charge at intervals, the blasting workers need to bundle the charge rolls, bamboo chips and detonating cords in advance, which increases the working time, and the diameter of the charge rolls is generally 32mm, which is close to the diameter of the bundled bamboo chips and detonating cords. The diameter of the blast hole increases the difficulty of charging and prolongs the charging time

Images