考虑排水管路温度应力变化的支承梁可变荷载分析方法  

Variable load analysis method for supporting beams considering temperature stress changes in drainage pipelines

作　　者：赵宇亮 ZHAO Yuliang(Beijing Huayu Engineering Corporation Limited,China Coal Technology and Engineering Group,Beijing 100120,China)

机构地区：[1]中国煤炭科工集团北京华宇工程有限公司,北京100120

出　　处：《建井技术》2024年第3期81-84,共4页Mine Construction Technology

摘　　要：矿井开采模式逐渐向深部延伸的转变加深了高温热害对生产的影响。常用设计规范显示排水管路温度应力与支承梁的力之间存在倍增关系,这直接关系到矿井的安全运行。因此,针对煤矿井筒内排水管路温度应力对支承梁的作用力问题,基于温度应力与变形量原理,创新性提出了立井井筒中排水管路支撑梁计算模型,并采用矩形运算方法计算得出两端和中间管路支撑梁所受力。综合了温度应力的影响,通过理论计算与分析得到支撑梁的计算温度应力值均小于规范中的温度变化标准值,显著地降低了托架支撑力的原有设计值,从理论上证明了在实践中托架的支撑力小于规范设计值却能安全使用的合理性。The gradual transformation of mining modes towards deeper extensions has deepened the impact of high-temperature heat hazards on production.However,commonly used design specifications show a doubling relationship between the temperature stress of drainage pipelines and the force of supporting beams,which directly affects the safe operation of mines.Therefore,in response to this difficult problem,this paper applies the basic principle of temperature stress and its deformation to innovatively propose a calculation model for the support beam of the drainage pipeline in the vertical shaft.The rectangular operation method is used to calculate the forces on the support beams of the both ends and middle pipelines.Through theoretical calculation and analysis,this article integrates the influence of temperature stress and obtains that the calculated temperature stress values of the support beam are all lower than the temperature change standard values in the specifications,significantly reducing the original design value of the bracket support force,which theoretically proves the rationality of the support force of the bracket being less than the standard design value but can be used safely in practice.

关 键 词：煤矿 井筒 排水管路 温度应力 托架 设计 

分 类 号：TD443.5[矿业工程—矿山机电]