论文部分内容阅读
一、前言本文主要探讨不同地层压力时矿山巷道支架拱形结构的合理形式。至今,矿山设计和施工,一般采用三心拱或半圆拱。欧洲传统用的半圆拱和苏联矿山设计中照抄的三心拱,在理论上和实际上不是最合理的形式。选择合理的拱形是结构设计及施工中的主要问题。合理拱形结构是在不同的地层压力、巷道的几何尺寸等复杂条件下,结构能处于良好的受力状态,并能节约材料、降低成本以及便于施工。我国很多古代建筑上也成功地用过多种形式的拱形结构。在土木工程上,合理拱形的研究也有几百年的历史。由于地层压力的复杂,地下拱形结构的研究是很不完善的。
I. INTRODUCTION This paper mainly discusses the reasonable form of the arch structure of mine tunnels in different formation pressures. So far, the design and construction of mines generally use three-centered arches or semi-circular arches. The semi-circular arches used in Europe and the three heart arches copied in Soviet mine design are theoretically and practically not the most reasonable forms. Choosing a reasonable arch is a major issue in structural design and construction. The reasonable arch structure is under a variety of complex conditions such as formation pressure and roadway geometry, the structure can be in a good stress state, and can save materials, reduce costs and facilitate construction. Many forms of arched structures have also been successfully used in many ancient buildings in China. In civil engineering, the study of rational arches has also been a few hundred years old. Due to the complexity of formation pressure, the study of underground arch structures is very imperfect.