Support Effect and Application of High Convex Steel-Belt in Deep Roadway

Abstract:

The steel-belt has the ability to improve support effect of the whole system that coordinate the anchorage force of bolt or cable, improve the support effect of the anchor system and diffuse the fore acted on bolt or cable. During the progress of support in the roadway, there has appeared flat, W and M steel-belt, and all of them have played important roles in different stages of support in the roadway. However, steel-belt now is rarely used in the deep rock roadway. High convex steel-belt is a new product, but whether it can adapt or not to the deep roadway, it's well worth our attention. The structure of high convex steel-belt and the characteristics of deep roadway are introduced in this paper. Numerical test on four kinds of mine steel-belt is carried out by ANSYS, and the advantage of high convex steel-belt is comparatively analyzed in deep roadway. At last, an example is shown. Research indicates that the steel-belt bears mainly the point load or local load due to non smooth and even convex wall sides, and it lies in a state of inelastic and large deformation due to non uniformity deformation of surrounding rock in the deep rock roadway. The mechanical behavior of convex steel-belt has the performance of obvious advantages. It can adapt to the large deformation of deep roadway due to the convex structure. This result has been proved in the engineering practice.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 1434-1438
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.1434
• Online since: December 2012
• Authors: Jia Lin Zhang, Le Tuan Cheng, Zheng Sheng Zou, Qing Bo Li
• Keywords: ANSYS, Deep Roadway, High Convex Steel-Belt, Mechanical Property, Support

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