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Blasting Rock Classification Technique, Blasting Design and Tunnel Blasting Method Considering Discontinuous Surface of Rock
Blasting Rock Classification Technique, Blasting Design and Tunnel Blasting Method Considering Discontinuous Surface of Rock
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机译：考虑岩石不连续面的爆破岩石分类技术，爆破设计和隧道爆破方法
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摘要
The present invention relates to a blasting rock classification technique, a blasting design, and a tunnel blasting method in consideration of a discontinuity surface of a rock.;In tunnel and underground space excavation conducted by blasting, it is very difficult to perform ideal blasting according to the conditions of the tunnel by numerically defining many parameters which vary from time to time in terms of rock engineering. Since the physical properties and geological structure of the rock mass to be blasted are inherently possessed by the rock mass itself, they can not be altered artificially. Therefore, it is necessary to accurately determine the surface condition and the surrounding environment so as to be the most suitable blast do.;Tunnel blasting determines the rock properties by classifying the physical properties and geological structure of the excavated rock by rock mass engineering and determines the reinforcement method and the length of excavation per blasting. In order to perform successful blasting for a given length of excavation, a rock blasting is firstly engineered again and then a standard blasting pattern is designed to be the most economical blasting after several blasting according to the surrounding environment and working conditions It is a principle.;Accordingly, the blasting design and the tunnel blasting method of the present invention are characterized in that blasting conditions other than the blasting conditions which have been applied in the past, such as the type of discontinuity, direction, inclination, gap, gap, , And each factor was divided into four factors, and weighted according to the degree of influence on the blasting by the characteristics of the rock mass.;The joint coefficient is calculated by dividing the empirical data by the actual blasted actual value and the difference made by the conventional rock classification method according to the blasting characteristics, and assigning the joint factor to the related expression used in the blasting design After the standard blasting, the joint factors were determined by dividing points based on blasting difficulty and calculation method.;In order to maintain the correlation with the reinforcement design method, the blasting rock classification was made by multiplying the conventional rock classification score by the joint factor and setting it as a new blasting rock grade. In the blasting rock classification, , Which is divided into 7 stages, so that it can be precisely designed and blasted.;In order to be used as a standard to be used in all processes ranging from rock blasting to tunnel design and construction in terms of blast engineering, the discontinuities distributed in the surface are corrected with the existing calculation formula Respectively.;Accordingly, the present invention can further improve the reliability of blasting by calculating the amount of blasted rock mass and the number of drilled holes by the joint coefficient calculated by the discontinuity distributed in the rock, and by directly applying it to the field blasting, Not only the required blasting pattern design but also applied to the blasting site will contribute greatly to safety work and reduction of blasting cost, as well as stability of rock.
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