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The average iron content of iron ore is

New ore pulverizing technology was proposed by the Institute of mechanics, Chinese Academy of Sciences. In order to study the applicability of the new ore pulverizing technology to different materials, several experiments were carried out. In this paper, the author used the new ore pulverizing technology to pulverize iron ore, kaolin, wood and PVC, and finds that the new ore pulverizing technology has good application for iron ore, kaolin wood but for PVC. The experimental results show the application scope of the new ore pulverizing technology.

The locations of the 2013 eastern ShengLi open pit mine landslide and the 2010 northern ShengLi open pit mine landslide were both in the XilinHot city of Inner Mongolia province, in areas with similar geographical, regional geological, geomorphic conditions and excavation depth. There are so many similar characteristics, such as landslides triggered by the rain storms, landslides occurred many times, landslides with long time deformation, but there are also some differences between the two landslides, such as the scale and failure mode. Field investigations showed that the two landslides were both occurred several days after the rain storms, the eastern ShengLi open pit mine landslide body with the volume of 85 million m3 has been in persistent deformation with an observed maximum horizontal displacement of 58 m in August 2013, Furthermore the implemented check dams at east open pit mine had not formed an efficacious blocking system to resist the flow because of incorrect judgment regarding the landslide style. The northern ShengLi open pit mine landslide body with 0.5–1 million m3 occurred several times after each rain storm. In the whole, the time of persistent deformation about the eastern ShengLi open pit mine was much longer than that of the northern ShengLi open pit mine because of the difference of the filling material of fault and space combination between the faults and the slope. Field investigation, physical model experiments, real-time displacement monitoring and numerical simulation were implemented to investigate the characteristics, mechanism, and retaining measures of the two landslides. The insights gleaned herein may be valuable for the understanding of the mechanisms of landslides and improving preventative measures against these types of events in north China in the future.

A slope failure is developed due to progressive external loads and deteriorations of slope geomaterials, thus forming a progressive and dynamic development and occurrence of landslides. Site geological properties and other active factors such as hydrodynamic load and human activities are complex and usually unknown, thus this dynamic development and occurrence of landslides can only be understood through the progressive accumulation of knowledge on the landslides. For such a progressive process, this paper proposes a dynamic comprehensive control method for landslide control. This control method takes full advantage of updated monitoring data and site investigations of landslides, and emphasizes the implementation of possible measures for landslide control at reasonable stages and in different groups. These measures are to prevent the occurrence of a landslide disaster. As a case study, a landslide project at the Panluo open-pit iron mine is analyzed to illustrate this dynamic comprehensive control method.

Vectorial mechanics and analytical mechanics are two time-honored forms of classical mechanics. Vectorial mechanics is mainly based on Newton’s l aws i n a c lear a nd simple mathematical form. It has achieved a high degree of sophistication and success in solid mechanics. Analytical mechanics is based on the principle of virtual work and D'Alembert’s principle, which is highly universal. Often, the term vectorial mechanics is applied to the form based on Newton's work, to contrast it with analytical mechanics which uses two scalar properties of motion, the kinetic and potential energies, instead of vector forces, to analyze the motions. Analytical mechanics was primarily developed to extend the scope of classical mechanics in a systematic, generalized and efficient way to solve problems using the concept of constraints on systems and path integrals. In this paper, we give a functional of fluid in Lagrangian form. Then we demonstrate that the momentum equations of incompressible viscous flow can be achieved after several mathematical operations. At last, we show the Eulerian approximation of the energy functional under some assumptions. Our work lays a good foundation for our numerical methods.

In the early days of automotive products design stage, validation of the package program primarily through the 3D virtual environment, and the 3D virtual environment is not virtualization specific enough and overall image; At the same time in the mid-term product development stage, rapid prototype production is completed, additional pay for rapid sample fixture to complete the production, transportation and installation, re-use is very low; Based on this, in order to validating the package program environment during the early days of automotive products design stage, in order to providing a platform for rapid sample during the mid-term product development stage, we need Ergonomic evaluation system. We have an introduction about the Ergonomic valuation system’s research content, the Ergonomic valuation system should simulate the driver environment and other situation; including comfort machine, visibility, reach, entertainment establishment, including seat, paddles, steering wheel, console and so on. The Ergonomic valuation system’s characteristics include multi-joint, high precision, enough interfaces for fast sample installation and safe for using. The Ergonomic valuation system can simulate the feasibility of ergonomic solutions in the early stages of project development; a multi-frame Ergonomic valuation system can reduce the cost of product development, because we don’t need to make the base of the fast sample as before.