1) stratified roof
层状顶板
1.
Application of the contact element method in analyzing the separation and deformation of the stratified roof;
接触单元法在层状顶板离层变形分析中的应用
2.
By using the analyzing code called rock destroy process(RFPA~(2D)) analysis,the distortion destroy characteristic of tunnel with stratified roof and the destroy rules of tunnel with stratified roof under different lateral pressure and different ratio of thickness to span were analyzed.
利用东北大学自行开发研制的岩石破裂过程分析软件(RFPA2D),分析了层状顶板巷道围岩的变形破坏特征,以及不同侧压条件下和不同厚跨比条件下层状顶板的破坏规律。
3.
The model is based on the nonlinear contact theory and constructed with the study results of the roof characters of full seam roadway with stratified roof and large section in Daning coal.
为研究层状顶板在巷道开挖后的离层变形特征,确定顶板离层的准确位置,根据非线性接触理论,针对大宁煤矿大断面全煤巷道层状顶板结构特征,层间接触面采用状态非线性模拟的方法,构建了有限元计算模型,并运用ANSYS计算软件进行了数值模拟。
2) Layered roof
层状顶板
1.
Study on the layered roof compression-bending failure of roadways in coal seam;
煤巷层状顶板压曲破坏现象分析
3) stratified soft roof
层状较弱顶板
4) thin-bedded and cataclastic roof
薄层状碎裂顶板
1.
The anchoring theory, technology and its application effect on thin-bedded and cataclastic roof are important topics to be studied The geomechanics condition, surrounding rock characteristics and construction method of the starting cut with large section in a fully mechanized mining are introduced.
介绍了薄层状碎裂顶板综采切眼采用螺纹钢锚杆-金属网-钢筋焊接梯子梁-锚索-槽钢梁等进行联合锚固的地质力学条件、围岩特征和施工方式,提出了该条件下锚周材料的选择原则和选择结果。
补充资料：层状断口
laminationfracture：所含非金属夹杂物在轧制过程中被延展成薄层的金属材料垂直于轧制面的断口。
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