直墙半圆拱可缩性U型钢支架卡缆临界约束力理论研究  

Theoretical Research of Yieldable U-Steel Support Clip Critical Constraints with Straight Wall and Semi-circular Arch

作　　者：王港盛 邰阳[2] 祝凌甫[1] WANG Gang-sheng;TAI Yang;ZHU Ling-fu(Coal Mining&Designing Department,Tiandi Science&Technology Co.,Ltd.,Beijing 100013,China;Mine Engineering School,China University Mine Technology,Xuzhou 221116,China)

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤矿开采》2018年第2期45-48,共4页Coal Mining Technology

基　　金：中央高校基本科研业务费专向资金资助(2012DXS02)

摘　　要：针对直墙半圆拱可缩性U型钢支架的卡缆约束力不合理问题^([1]),对可缩性U型钢支架提出卡缆临界约束力概念。通过建立直墙半圆拱可缩性U型钢支架的力学模型,给出了支架的卡缆临界约束力的计算公式,并得出在静摩擦系数f=0.20、上下卡缆约束力相等、侧压系数λ=0.4~2.0时,直墙半圆拱可缩性支架系列卡缆临界约束力。To some reasonable problems of straight wall and semi-circular arch yieldable U-steel support clip critical constraints,and then the notion of clip critical constraints of yieldable U-steel support was put forward.The mechanical model of straight wall and semi-circular arch yieldable U-steel support was built,and then the computational formula of clip critical constraints was put forward,and then the results that series clip critical constraints of straight wall and semi-circular arch yieldable U-steel support were reached,as static friction coefficient was f=0.20,constraints of top and down of clips was equal and lateral coefficientλ=0.4~2.0.

关 键 词：直墙半圆拱可缩性U型钢支架 卡缆临界约束力 理论计算 

分 类 号：TD355.9[矿业工程—矿井建设]