Investigation of mine pressure and deformation due to phosphate ore body excavation based on Hoek-Brown model

Tao Wang , Xianyu Zhao , Wanrui Hu , Jinhua Chen , Long Cheng , Lianzheng Zhao , Hanzhong Zheng
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引用次数: 3

Abstract

Phosphate ore body is an important basis for food supplies and the fine phosphorus chemical industry. With underground mining of the Ph3 seam of Xiongjia Gulf Phosphate ore stope in China as a research background, the excavation process is simulated using the Hoek-Brown model in this paper. Hoek-Brown parameter selection method is proposed first, and the influence of the goaf adjacent to this seam and the rock movement caused by underground mining, pillar yield and surface subsidence deformation are then studied. Finally, the feasibility of implementing a room-and-pillar mining system in the gently inclined phosphate ore body is analyzed. It is pointed out that local ground subsidence should cause enough attention.

基于Hoek-Brown模型的磷矿体开挖矿山压力与变形研究
磷矿体是粮食供应和精细磷化工业的重要基础。本文以国内雄家湾磷矿采场Ph3煤层地下开采为研究背景,采用Hoek-Brown模型对其开挖过程进行了模拟。首先提出了Hoek-Brown参数选择方法,然后研究了该煤层附近采空区及地下开采引起的岩石移动、矿柱屈服和地表沉降变形的影响。最后,分析了在缓倾斜磷矿体中实施房柱采矿系统的可行性。指出局部地面沉降应引起足够的重视。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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