The comple mentary sink angle a and these maths models can be used to analyse the order and the balance condition of pressure on the soft rock coal mine laneway, so an accurate choice of support intensity can be chosen.
本文根据采空区上覆岩层沉降塌陷角β的特性,建立外塌陷角a<(90°-β)的概念及一套数学模型,用来定性定量分析煤矿软岩巷道围岩压力显现规律和压力平衡条件,做到精确选择支护强度。
For any(inexact) line search,it s scheme satisfies the descent condition gkTdk≤-34‖gk‖2.
在非精确线搜索下,它满足充分下降条件g_k~Td_k≤-3/4‖gk‖~2。