Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第29卷    第7期    总第244期    2019年7月

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文章编号:1004-0609(2019)-07-1509-10
全覆式离子型稀土矿山临界注液范围的计算
洪本根1,罗嗣海2,胡世丽2,王观石2

(1. 江西理工大学 资源与环境工程学院,赣州 341000;
2. 江西理工大学 建筑与测绘工程学院,赣州 341000
)

摘 要: 掌握全覆式离子型稀土矿山临界注液范围的计算方法对于合理确定矿山注液范围具有重要意义。通过注液边界将潜在滑坡体分为两部分:注液区潜在滑坡体提供下滑力,未注液区潜在滑坡体提供抗滑力。基于黏性土土压力的计算方法和简化Bishop法,建立稳渗状态下矿山临界注液范围的理论模型,并基于数值计算结果和现场位移监测结果验证理论模型的有效性。结果表明:首先,对于坡度为25°、30°或35°的简单边坡,临界注液范围理论模型计算值与数值模型计算值的相对误差绝对值在20%以内,相对误差绝对值较小,初步说明临界注液范围理论计算模型的有效性;其次,对于某一现场边坡,理论模型计算的边坡安全系数与其边坡位移变化规律吻合,再次说明了临界注液范围理论计算模型的有效性。

 

关键词: 离子型稀土矿山;下滑力;抗滑力;边坡安全系数;临界注液范围

Calculation of critical liquid injection range in full clad ion-absorbed rare earth mine
HONG Ben-gen1, LUO Si-hai2, HU Shi-li2, WANG Guan-shi2

1. School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2. School of Architectural and Surveying and Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

Abstract:For completely covered ionic-type rare earth mine, it is of great significance to master the calculation method of critical liquid injection range for determining the reasonable liquid injection range. The potential landslide mass was divided into two parts by liquid injection boundary, the potential landslide mass in liquid injection area provides glide force, the potential landslide mass in uninjected liquid area provides anti-sliding force. Based on the earth pressure calculation method of cohesive soil and simplified Bishop method, the theoretical model of critical liquid injection range under steady seepage condition was established. The validity of the theoretical model was verified by numerical results and field displacement monitoring results. The results show that, first,for a simple slope with a slope of 25°, 30° or 35°, the absolute relative error between theoretical model calculation value and numerical model calculation value of critical liquid injection range is less than 20%, the absolute relative error is smaller, the validity of the theoretical calculation model of critical liquid injection range is preliminary explained. Second,for a field slope, the slope safety factor calculated by the theoretical model coincides with the variation of slope displacement, the validity of the theoretical calculation model of critical liquid injection range is explained again.

 

Key words: ionic-type rare earth mine; glide force; anti-sliding force; slope safety factor; critical liquid injection range

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
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