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金属矿山 ›› 2018, Vol. 47 ›› Issue (11): 31-36.

• 采矿工程 • 上一篇    下一篇

非洲某铜矿大断面深井硐室围岩稳定性分析

鲍伟伟1,2,王贻明1,2,吴爱祥1,2,陈顺满1,2,杨鹏3,王朝垒4   

  1. 1. 金属矿山高效开采与安全教育部重点实验室,北京,100083;2. 北京科技大学土木与资源工程学院,北京,100083;3. 中色非洲矿业有限公司谦比希铜矿,北京,100082;4. 中矿资源勘探股份有限公司,北京,100089
  • 出版日期:2018-11-15 发布日期:2018-12-19
  • 基金资助:

    * 国家自然科学基金面上项目(编号:51674012、51574013)

Analysis on the Surrounding Rock Stability of Deep Large-section Chamber of a Copper Mine in Africa

Bao Weiwei1,2,Wang Yiming1,2,Wu Aixiang1,2,Chen Shunman1,2,Ynag Peng3,Wang Chaolei4   

  1. 1. Key Laboratory of High-Efficient Mining and Safety of Metal Mines,Ministry of Education,Beijing 100083,China;2. School of Resources and Civil Engineering,University of Science and Technology Beijing,Beijing 100083,China;3. Chambishi Copper Mine, CNMC African Minerals Co., Ltd., Beijing 10082, China;4. Sinomine Resource Exploration Co., Ltd., Beijing 100089, China
  • Online:2018-11-15 Published:2018-12-19

摘要: 为了解决深井大断面硐室稳定性问题,在充分掌握非洲某铜矿东南矿体中央配电硐室围岩物理力学性质及工程地质条件的基础上,根据弹塑性理论,将硐室周边的区域划分为破裂区、松动区、塑性区和弹性区。结合理论公式和工程类比法,提出了“锚杆+锚索+钢筋网+喷射混凝土”的联合支护方案,采用经验公式法确定其支护参数,并在现场进行监测。工程实践表明,硐室的表面位移和深部位移较小,围岩的变形得到有效控制,其支护效果较好,可为类似硐室工程提供一定的借鉴。

关键词: 深井, 大断面硐室, 联合支护, 理论分析, 监测

Abstract: In order to keep the stability of large-section chamber in the Deep Mine,and based on totally grasping the physical and mechanical properties and the engineering geological conditions of the surrounding rock of the central distribution chamber in the southeast orebody of a copper mine in Africa,the area around the chamber is divided into four regions,including the fractured region,the cracked zone, the elastic zone and the plastic zone according to elastic-plastic theory. Combined with the theoretical formula and the engineering analogy method,the combined support scheme of "anchor bolt + anchor cable + steel mesh +sprayed concrete" was proposed,and the supporting parameters were determined by the empirical formula method and monitored on-site. Engineering practice showed that the surface displacement and deep displacement of chamber are less,which means that the deformation of surrounding rock has been effectively controlled. This method has good supporting effect and can provide references for similar chamber engineering.

Key words: Deep well, Large section chamber, Combined support, The theoretical analysis, Monitoring