[1]李俊平,李鹏伟,张浩.毕机沟露天矿台阶坡面角取值范围及最终边坡角研究[J].西安建筑科技大学学报(自然科学版),2017,(04):598-603.[doi:10.15986/j.1006-7930.2017.04.022]
 LI Junping,LI Pengwei,ZHANG Hao.Research on bench angle range value & final slope angle in Bijigou open -pit[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2017,(04):598-603.[doi:10.15986/j.1006-7930.2017.04.022]
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毕机沟露天矿台阶坡面角取值范围及最终边坡角研究()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年04期
页码:
598-603
栏目:
出版日期:
2017-09-10

文章信息/Info

Title:
Research on bench angle range value & final slope angle in Bijigou open -pit
文章编号:
1006-7930(2017)04-0598-06
作者:
李俊平李鹏伟张浩
(西安建筑科技大学 材料与矿资学院,陕西 西安 710055)
Author(s):
LI Junping LI Pengwei ZHANG Hao
(School of Materials and Mineral Resources, Xian Univ. of Arch . & Tech ., Xian 710055, China)
关键词:
露天开采边坡稳定性台阶坡面角最终边坡角FLAC-3D边坡加固
Keywords:
open pit mining slope stability step slope angle the final slope angle FLAC -3D slope reinforcement
分类号:
TD324
DOI:
10.15986/j.1006-7930.2017.04.022
文献标志码:
A
摘要:
毕机沟露天矿南北剖面山坡与凹陷露天并存,且山坡露天高达270 m,设计中台阶坡面角都取65~68°、最终边坡角都取45°可能不合理.应用快速拉格朗日有限差分法(FLAC-3D)专门研究该剖面的台阶坡面角取值范围,据此建立边坡台阶构成方案,并确定最终边坡角及局部边坡的加固方案.研究表明:台阶坡面角及最终边坡角取值均与边坡类型、开采深度及岩性有关;按岩质边坡上出现的拉应力值及其区域大小确定是否加陡或减缓边坡,并确定边坡局部的加固方案,经济合理、技术可行、简便实用.该方法适用于岩质露天边坡设计中安全合理地确定台阶坡面角及最终边坡角
Abstract:
An open pit north -south cross-sectional has both hillside open pit and hollow open pit, and the hillside open pit is up to 270 m high. But the step slope angles by design are taking 65 ~ 68°, the final slope angles are all 45°, which seems to unreasonable . Based on the design capacity, the step height is set by 15 m . Using the fast Lagrangian Finite Difference Method (FLAC -3D) specializes in the law of valuing the step slope angle. On this basis, the structural scheme of slope steps were built to study the final slope angle, the structure parameters of the steps and the local slope reinforcement scheme . And finally the step slope angle and the final slope angle are found to be related to slope type, mining depth and lithology. The tensile stress zone size appearing on the rock slope determines either to raise or slow down the step slope, and the local slope reinforcement scheme was proposed in terms of the tensile stress zone size . This method is economically reasonable, technically feasible, simple and practical, suitable for the determination of the step slope angle and the final slope angle when both technically safe and economically reasonable are asked

参考文献/References:

References

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备注/Memo

备注/Memo:
收稿日期:2016-03-01修改稿日期:2017-07-15
第一作者:李俊平 (1969-) ,男,博士,教授,博士生导师,主要从事矿山岩石力学的教学与科研工作.E-mail:2538479164@qq.com
更新日期/Last Update: 2017-09-11