李勇, 李昌存, 庞仕辉,等.露天铜矿边坡工程地质分区及稳定性评价研究[J].河南理工大学学报（自然科学版）,2022,41(1):59-66.

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露天铜矿边坡工程地质分区及稳定性评价研究

李勇1, 李昌存1, 庞仕辉2, 杜永刚3, 乔小兵4, 陶志刚2

1.华北理工大学 矿业工程学院，河北 唐山 063200；2.中国矿业大学（北京） 深部岩土力学与地下工程国家重点实验室，北京 100089；3.甘肃省定西市公路局，甘肃 定西 743000；4.甘肃省公路航空旅游投资集团有限公司，甘肃 兰州 730030

摘要:针对矿山露天采场边坡稳定性日益严重问题，以新疆土屋铜矿露天采场为工程地质背景，通过对原有地质调查资料的补充和分析进行工程地质分区，将矿山露天采场分成4个区域，并运用赤平极射投影法和全波列声波测井法对不同区域的岩体进行分析，研究不同区域不同特征的边坡稳定性。结果表明：通过评价各区岩体蚀变状况、水文地质特征、岩层和边坡赋存状态，得出N区工程地质条件最差；通过赤平极射投影法绘制的极点图、等密度图和玫瑰图对比各区平均节理密度和节理发育程度，得出II区边坡稳定性最差；通过全波列声波测井法测得各区代表钻孔的波速，进而求解出各区钻孔的岩体完整性系数K_v，得出I区边坡稳定性最差。结合工程地质分区、赤平极射投影法与全波列声波测井法综合分析，I区边坡稳定性最差，容易出现边坡失稳等问题，需要重点监测、防护并加以治理。

关键词:边坡;工程地质分区;赤平极射投影法;全波列声波;稳定性评价

doi:10.16186/j.cnki.1673-9787.2020050051

基金项目:国家自然科学基金资助项目（41941018）；河北省重点攻关项目（19ZD2GA005）

收稿日期:2020/05/18

修回日期:2020/08/05

出版日期:2022/01/10

Study on engineering geological zoning and stability evaluation of the open-pit copper mine slope

LI Yong1, LI Changcun1, PANG Shihui2, DU Yonggang3, QIAO Xiaobing4, TAO Zhigang2

1.School of Mining Engineering， North China University of Science and Technology， Tangshan  063200 ， Hebei， China；2.State Key Laboratory of Deep Geomechanics and Underground Engineering， China University ofMining and Technology （ Beijing） ，Beijing  100089 ， China；3.Highway Bureau  of  Dingxi City， Gansu Province， Dingxi  743000 ， Gansu， China；4.Gansu Provincial Highway Aviation Tourism Investment Group Co. Ltd. ， Lanzhou  730030，Gansu，China

Abstract: As the mining depth of mine continues to increase，the stability of the slope in the open pit is increasingly serious． Herein，the open pit of the Tuwu Copper Mine was taken as the engineering geological background． By supplementing and analyzing the existing geological survey data，the mine was divided into four geological zones． Flat polar projection and full wave sonic logging methods were applied for the rock masses in different zones to study the respective slope stability． The results showed that: The engineering geological conditions of the Zone IV were the worst if by means of evaluating the quality of the rock masses，the degree of alteration，the hydrogeological characteristics，and the occurrence status of the rock layers and slopes; The slope stability of the Zone Ⅱ was the worst if comparing the average joint density and development degrees between different zones，by means of drawing pole，equal density，and rose maps with polar flat projection; The same result was also drawn if the full wave sonic logging method was used，i． e． ，obtaining the rock mass integrity coefficient K_v of representative boreholes in different zones by measuring the wave velocity． Combined with the engineering geological zoning，polar projection，and full-wave sonic logging methods，this study revealed that the slope stability in Zone Ⅱ was the worst，and that slope was prone to be instable，and thus needed to be well monitored，protected，and treated.

Key words:slope;engineering geological zoning;polar flat projection;full-wave sonic logging method;stability evaluation

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