With the going deep of the research work, many researchers have realized that Rigid Body Limit Equilibrium Method is an imprecise moveable solution calculating process.

随着研究的深入，不少分析、研究人员认识到刚体极限平衡法是一种不严密的可动解求解过程。

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At present, the rigid-body limit equilibrium method adopted in the design of crane beam on rock wall can not reflect the actual mechanical behavior of crane.

目前，岩壁吊车梁设计所采用的刚体极限平衡设计方法还不能确切反映岩锚吊车梁的实际受力状态。

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Also the Mohr -coulomb theory of the transfer coefficient reduction method is derived based on thrust calculation and the rigid body limit equilibrium separately.

同时也分别从推力计算和刚体极限平衡条件推导了基于摩尔-库仑理论的传递系数折减法。

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