In this study, the relationship between four expansion indices and the expansion potential of gypsum rock was studied; on this basis, a criterion for judging expansion potential is established for gypsum rock. The results show that the free expansion rate is unsuitable for grading gypsum rocks’ expansion potential. Setting the gypsum rock in the Wuzhishan tunnel as the research subject, the ultimate expansion rate is 24.28% on the 7th day and 34.08% on the 30th day; the ultimate expansion rate on the 7th day of the indoor rock sample can be estimated by the fitting formula on the 30th day, the ultimate expansion force is 304.51 kPa, and the BET-specific surface area is 6.31 m2/g. The ultimate expansion ratio and BET-specific surface area have an excellent linear relationship with the ultimate expansion force. Setting the ultimate expansion force, ultimate expansion ratio and BET-specific surface area as the standard, the criterion for judging the expansion potential of gypsum rock is determined, which is more convenient and accurate than existing standards. The standard in this paper can predict the potential disasters that may occur in underground engineering.
This article deals with the methods of enumerating, analysis and comparative study. It presents a way to research the linear art of animation modeling design. Here the author introduces a new approach of displaying various styles and forms of lines, which can reflect and enhance the appeal of different style of animation modeling design so as to quest for the innovation and practice in the animation modeling design. The line art of the animation modeling design is an exotic flower in the oriental arts. It does not only mean to build up the artistic quality of the line, but also to greatly improve the value of the animation modeling design. Only such an art has great vitality. This may come to a conclusion that the line art is the foundation of the animation design. The lines of the animation modeling design are not only the basis and premise of the animation, but also an inspiration for playwriting and subsequent work. The most important element of a good cartoon is a good animation modeling design. Good animation modeling design not only reflects stylistic features of the film and TV animation, can also affect the degree of interesting of the audience to the role. Further exploration of the line art would contribute to the innovation and creation of animation modeling design. In animation modeling design, the exploration and innovation of line art are often reflected in several aspects such as line shape, material media, performance style and expression of artistic conception.
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