![]() The proposed handheld mobile platform is also applied to the real case history of line 6 in Guangzhou, China. Using the proposed mobile platform, end users can evaluate and control TSB quality after each blast. The function of this handheld mobile platform mainly includes data input, data modification, data deletion, weight setting for smooth blasting evaluation, smooth blasting quality assessment, and smooth blasting quality control. In this study, a handheld mobile platform that is based on the Android system and is written in the Java language is proposed to evaluate and control the performance of TSB. At present, a large gap exists between evaluation theory and the control application of tunnel smooth blasting (TSB) quality. Moreover, the specific charge values yielded by the two methods are approximately the same and very close together.Many tunnels around the world are still being constructed by drilling and blasting because these methods have an unmatched degree of flexibility relative to machine excavations using tunnel boring machines. The results showed that angular method requires more blasthole numbers than parallel method in similar condition (blasthole diameter and tunnel face area). The relations between both of blasthole diameters and the tunnel face area with the above parameters in different blast design models were then investigated to yield a set of equations with the highest correlations to compare the methods. Using the software, it is quickly possible to determine specific charge, specific drilling and number of blastholes for each blast design model. In this research, a software for tunnel blast design was developed to analyze the effect and sensitiveness of blasthole diameter and the tunnel face area on blasting results in different blast design models. There are mainly two groups of methods for tunnel blast design categorized based on the parallel cuts and angular cuts. Among blasting parameters, blasthole diameter and tunnel face area are more significant so that any change in these parameters could finally affect on specific charge and specific drilling. One of the most important factors influencing on a tunnel blast efficiency is the proper design of blasting pattern. ![]()
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