In order to solve the problem of experimental research on the penetration process of projectile into anchored rock mass, we derived the essential similarity conditions for the physical simulation experi- ment accordin...In order to solve the problem of experimental research on the penetration process of projectile into anchored rock mass, we derived the essential similarity conditions for the physical simulation experi- ment according to the similarity theory, carried out the experiment on the penetration process of a kind of penetrating bomb into the anchored rock mass of type III, and compared the experimental results with the values computed by the professional Young's empirical formula. The test results show that the phys- ical simulation experiment can represent the actual penetration process of projectile into anchored rock mass. The research method proposed in this paper provides technical support for the experimental research on the design and reconstruction of underground protection works.展开更多
Nothing is trivial in the interests of the masses,mass discipline should be kept in mind.We must strictly adhere to the mass discipline of the Party and firmly establish the Marxist mass viewpoint and the foundation o...Nothing is trivial in the interests of the masses,mass discipline should be kept in mind.We must strictly adhere to the mass discipline of the Party and firmly establish the Marxist mass viewpoint and the foundation of the ideological foundation for the mass work in practice.We must always uphold the fundamental interests of the people and constantly strengthen people’s awareness of Aim Consciousness of the Party.We must persist in innovating the working methods and methods for the massesand improving inner management ecology.This is also the meanings of the current issue of implementing the spirit of the 19-nation report and doing a good job of mass work under the conditions of socialism with Chinese characteristics in the new era.展开更多
文摘In order to solve the problem of experimental research on the penetration process of projectile into anchored rock mass, we derived the essential similarity conditions for the physical simulation experi- ment according to the similarity theory, carried out the experiment on the penetration process of a kind of penetrating bomb into the anchored rock mass of type III, and compared the experimental results with the values computed by the professional Young's empirical formula. The test results show that the phys- ical simulation experiment can represent the actual penetration process of projectile into anchored rock mass. The research method proposed in this paper provides technical support for the experimental research on the design and reconstruction of underground protection works.
文摘Nothing is trivial in the interests of the masses,mass discipline should be kept in mind.We must strictly adhere to the mass discipline of the Party and firmly establish the Marxist mass viewpoint and the foundation of the ideological foundation for the mass work in practice.We must always uphold the fundamental interests of the people and constantly strengthen people’s awareness of Aim Consciousness of the Party.We must persist in innovating the working methods and methods for the massesand improving inner management ecology.This is also the meanings of the current issue of implementing the spirit of the 19-nation report and doing a good job of mass work under the conditions of socialism with Chinese characteristics in the new era.
