The characteristics of the split& set rock bolt and its analysis by rock mechanics 开缝管式锚杆特性及其岩石力学分析
Through the analysis to the test re-sults, how to set up a reasonable tightening process for cylinder head bolt is expounded. 通过试验分析,阐述了如何合理地制定缸盖螺栓的拧紧工艺。
Based on the study of the mechanism of floor heave on coal seam roadway, the theory and a set of scientific technological measures of controlling the floor heave by bolt support are presented, in which the design method of bolt support system is used. 在对煤巷底臌机理进行研究的基础上,采用锚杆支护系统设计方法,提出了利用锚杆支护控制煤巷底臌的理论和一套科学有效的技术措施。
Analysis and tests of stress on split-set roof bolt 管缝式锚杆受力分析与试验研究
Currently a the main generator set that belongs to the our country, import or usher in the production basically and for the country and outside because of the type's machine set, the widespread existence heat stud bolt split and the flat surface leak the vapor problem. 目前300MW和600MW汽轮机组属于我国的主力发电机组,由于该类机组基本上为国外进口或引进生产,普遍存在高温螺栓断裂及平面漏汽问题。
Set up defect stock mathematical-mechanical model, vibration of issue, study semi-analytical method, offers the theoretical foundation for discernment of the defect of the rock bolt, measuring of the firm quality of anchor. 建立了缺陷锚杆振动问题的数学力学模型,研究该问题的半解析解,为锚杆缺陷的识别、锚固质量的检测提供理论依据。
Experiments are designed to verify the effectiveness of the improvement. The study details: ( 1) Stick CFRP to the surface of reinforced concrete beams. Then set reinforcement bolt on the beams. 并对改进方案的有效性进行了试验研究,具体内容如下:(1)在钢筋混凝土梁表面凿毛后粘贴碳纤维布,然后在每隔一定间距的位置设置螺栓加固。
A homogeneous soil foundation pit is set up firstly in the stimulation test; then excavating the foundation pit and bolt supporting construction is done. 模拟试验首先建立了一个均质的土质基坑,然后进行基坑开挖和锚杆支护施工。
Climbing formwork structure weight in the analysis, the heap as set construction, temporary construction loads, wind loads and other load cases on the basis of checking the anchor bolt shear and uplift the performance of local carrying capacity of the concrete. 在分析爬架结构自重、施工堆载、施工临时荷载、风荷载等荷载工况的基础上,验算了锚栓的抗剪、抗拔性能、混凝土的局部承载能力。