1) majorized quadratic bearing time
优化二次支护时间
2) second timbering
适时"二次支护"
3) secondary support
二次支护
1.
Study on laneway excavation monitoring and best secondary support time with new austrian tunnelling method;
新奥法巷道开挖监控及最佳二次支护时间的研究
2.
In order to determine the secondary support time and intensity,the changing rules of the stress and deformation speed of surrounding rocks with time,the effects of the secondary supporting time and intensity of surrounding rocks on deformation were analyzed using exponential creep model of FLAC2D at west tunnel in the Guhanshan Mine of Jiaozuo Coal Industry Group.
为了研究确定高应力软岩巷道二次支护时间和支护强度,以焦煤集团古汉山矿西大巷为研究对象,采用FLAC2D中的指数蠕变模型,研究分析围岩应力和围岩变形速度随时间的变化规律、二次支护时间及支护强度对围岩变形的影响规律。
3.
Ground reinforcement of the connecting aisle is finished successfully through strictly controlling key construction measures such as freezing holes construction,freezing station installation and secondary support.
通过严格控制冻结孔施工、冻结站安装及二次支护等关键施工措施,使得该地铁旁通道地层加固施工成功完成。
4) second support
二次支护
1.
Practice of second support theory applied to deep mine soft rock section chamber support;
二次支护原理在深井软岩硐室支护中的实践
5) second supporting
二次支护
1.
The author introduces the second supporting technology,which is worth popularizing in roadway construction instead of previous supporting methods to solve the problem of large ground pressure in deep collieries.
在矿井深部由于地压大,以前的支护方式已经不能满足要求,二次支护技术在巷道施工中有很大的推广价值。
2.
After the incipient supporting,second supporting should be carried out through technical monitoring,which offers comparatively correct temporal foundation,in order to decrease the quantity of deformation and technical.
初期支护后,通过工程监测为二次支护提供较准确的时间依据,尽量减小巷道变形,减少巷道维修工程量。
6) secondary supporting
二次支护
1.
States the technique experience that the influnce of dynamical pressure on secondary supporting of gob entry is avoided in a haulage center gate when double unit faces are adopted in soft rock mines.
介绍了软岩矿井采用对拉工作面集中生产条件下，运输中巷采用“避开动压二次支护法”沿空护巷的技术经验。
补充资料：次优化
分子式：
CAS号：
性质：对于某些优化问题，如果求取最优解需要花费的时间太多或代价太高，或者无法确定解的最优性，此时可以将优化的目标确定为得到一个满意解而不要求必须是最优解，这时得到的解可能只是局部的最优解，对这样一类问题称之为次优化。
CAS号：
性质：对于某些优化问题，如果求取最优解需要花费的时间太多或代价太高，或者无法确定解的最优性，此时可以将优化的目标确定为得到一个满意解而不要求必须是最优解，这时得到的解可能只是局部的最优解，对这样一类问题称之为次优化。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条