A Quality Control Method for Tunnel Smooth Blasting

Abstract

The invention relates to a tunnel smooth surface blasting quality control method. The method comprises the following steps: (1) acquiring control indexes according to tunnel smooth surface blasting quality influence factors; (2) acquiring historical measured data of each influence factor, and training the historical measured data by using a neural network algorithm to establish a sample model; (3) acquiring a target section control index and predicting the target section control index by using the sample model; (4) adjusting the target section control index for several times, predicting the adjusted target section control index by using the sample model after each adjustment, and comparing each prediction result with a prediction result obtained in the step (3); (5) controlling each control index by using an optical control scheme according to the comparison result in the step (4). Compared with the prior art, the method has the advantages of convenience in operation, strong systematization, high practicability and the like.

Description

technical field [0001] The invention relates to tunnel smooth surface blasting technology, in particular to a quality control method for tunnel smooth surface blasting. Background technique [0002] With the rapid development of the national economy and the continuous advancement of urbanization, my country has built a large number of roads, railways and urban subway tunnels, and has become the country with the most tunnels and underground projects, the most complex and the fastest growing in the world. [0003] Nevertheless, there are still a series of problems to be solved in the design and construction of tunnel smooth blasting: in terms of design, the design parameters of the blasting holes are mostly determined according to empirical formulas and engineering experience; in terms of construction, the construction team often does not Construct according to the design drawing and only rely on your own experience to drill holes, and adjust the blasting parameters at will. ...

AI Technical Summary

Problems solved by technology

[0003] Nevertheless, there are still a series of problems to be solved in the design and construction of tunnel smooth blasting: in terms of design, the design parameters of blasting holes are mostly determined according to empirical formulas and engineering experience; in terms of construction, the construction team often does not Construct according to the design drawing and only rely on your own experience to drill holes, and adjust the blasting parameters at will

These problems often lead to over-under-excavation in blasting, and there are huge hidden dangers

This not only directly affects the blasting quality of the tunnel, but also affects the stability of the surrounding rock of the tunnel, the amount of initial support and the amount of concrete work for permanent support, and increases the project investment.

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