工程科学与技术2017，Vol.49Issue(3)：85-95,11.DOI:10.15961/j.jsuese.201600560
两柱掩护式液压支架空间承载特性研究
Spatial Bearing Feature of Yield-type Support with Two Pillars
摘要
Abstract
The bearing area of yield-type support with two pillars which was obtained based on the plane simplified force system had poor adaptability and could hardly reflected the characteristics of bearing capacity in the top beams except the area where the symmetry plane was located.In order to solve the problems,the "bearing body" was adopted to analysis the characteristics of bearing capacity.Firstly,the outside surface formulas of the "bearing body" were deduced by space force system analytical method with the top beam as the study object and the selecting principles were also analyzed when the bearing faces were overlapped.Then the longitudinal and transverse sections of the "bearing body" reflecting the characteristics of bearing capacity in the corresponding areas were obtained.At last the relationships between the volume of the "bearing body" and the parameters of the support were analyzed.Besides,the above results were contrasted with the existing calculation results.The results showed that,when being selected,the overlapped bearing faces should follow the principle that the support force value of every hydraulic component must be minimum,meanwhile,the support force of pillars must be positive value;the "bearing body" varied with the support height and had a one-to-one correspondence with the support height;both the area and the two extreme points of the longitudinal bearing areas were maximum in the symmetry plane and decreased to the direction of both sides' pillars;the transverse bearing areas could be classified three types based on their distribution characteristics;the volume of "bearing body" could be increased according to increase the distance between the pillars' upper hinge point and the top beam's bottom,the distance between pillars,balance jack's working resistance and its horizontal angle;the characteristics of bearing area in the support's symmetry plane and the influences of support parameters on bearing capacity of support were identical with the existing calculation results.So the "bearing body" could reflect the characteristics of bearing capacity in any area of the top beam and the volume of "bearing body" could be the standard of support parameter optimization.关键词
两柱掩护式液压支架/空间承载特性/承载体/纵、横两向承载区/量化分析Key words
yield-type support with two pillars/spatial bearing feature/bearing body/bearing areas along length and width direction/quantitative analysis分类
矿业与冶金引用本文复制引用
侯运炳,何尚森,谢生荣,周殿奇,周玉,王果..两柱掩护式液压支架空间承载特性研究[J].工程科学与技术,2017,49(3):85-95,11.基金项目
国家自然科学基金资助项目(51234005) （51234005）
中央高校基本科研业务费项目资助(2011YZ02) （2011YZ02）
