论文部分内容阅读
1引言煤矿开采深度逐年增加,已达到1 200 m以上,相应的自重应力约为30 MPa,而煤系岩石通常强度较低。因而深井巷道支护的研究得到重视[1-2]。勾攀峰等[1-2]两文研究方式相同,进行同一巷道顶板和两帮的锚固设计,若合并刊出,且以数据表格替换重复的数字算式,或许更利于阅读。勾攀峰等[1-2]以深井巷道为题,但仅以普氏拱立论而不计及地应力,欠妥也较多。略述勾攀峰等[1]中数处:将倾斜锚固顶板假设为受均布荷载、均匀各向同性的水平简支弹性
1 INTRODUCTION The depth of coal mining has been increasing year by year, reaching more than 1,200 m with a corresponding self-weight stress of about 30 MPa. However, coal-based rocks generally have lower strength. Therefore, the research of deep mine roadway support has been paid attention [1-2]. Etc. [1-2] The research methods of the two languages are the same, and the anchoring design of the same roof and two supports is the same. If they are combined and replaced by the data table, they may be more conducive to reading. Acrobatic climb, etc. [1-2] to the deep tunnel as the title, but only Platts arches regardless of stress, defects are more. An overview of the number of points such as hook climbing [1] the number of places: the inclined anchoring roof assumed to be uniform load, uniform isotropic horizontal simply supported elasticity