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1.1. Studied the basic engineering geological situation in IV～VI ridge, seriously analyzed the actual measurement stress environment characteristic, deduced the solution method of the space stress in profile stress ellipse, which can get the stress distribution character in No. IV profile.
(1)研究了Ⅳ～Ⅵ号山梁基本的工程地质条件，重点分析了实测应力环境特征，推导了空间地应力在二维剖面内应力椭圆的求解方法，以了解Ⅳ线剖面内应力分布特征。收藏指正
2.By using linear elastic theory, formulae for tangential stress on ellipse edge are derived.
根据线弹性理论,导出了椭圆裂纹边缘的切向应力的表达式。收藏指正
3.Since it is not easy to obtain the accurate value of surface crack’s stress intensity factors,this thesis will attempt to use numerical approximate method that base on Irwin’s approximate method to solve this kind of problems,It gives numerical method of stress intensity factors of Surface half-ellipse crack.
由于表面裂纹的应力强度因子的精确解很难得到,本文提出了半椭圆表面裂纹的应力强度因子的一种新求解方法,并尝试在欧文近似算法基础上用有限元算法来试解此类问题;收藏指正
4.The mode Ⅲ stress intensity factor is deduced by considering the case in which the minor axis vanishes when the ellipse degenerates to a Griffith crack.
并利用所获得的椭圆孔洞结果推断出班型裂纹的应力强度因子。收藏指正
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