卧虎山矿充填体强度参数的反演计算与数值模拟
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摘要
矿产资源二步骤开采过程中,充填体强度是影响采场稳定性的关键因素。以卧虎山铁矿为研究对象,运用理论分析和数值模拟技术,反演采场充填体的强度参数,确定采场跨度和高度为12.5m所需的充填体强度。采用工程类比法、数学模型和经验公式等理论方法,可以确定采场合适充填体强度范围为0.4～2.3MPa。设计了5种计算方案,获得了每步开挖和不同充填体强度下采场的应力位移响应规律,确定了卧虎山矿安全高效开采的采场充填体强度范围为1.5～2MPa。
During the second-step mining of mineral resources,the strength of filling body is a key factor affecting the safety and stability of stope.Taking the Wohushan mine as a research object,the inversion on strength parameters of filling body in stope was carried out by theoretical analysis and numerical simulation.Then,the strength of filling body was determined for the stope span and height of 12.5 m.By means of engineering analogy,mathematical model and empirical formula,the reasonable strength range of filling body in stope was determined as 0.4～2.3 MPa.5 kinds of calculation schemes were designed.And the stress and displacement responses law of stope was obtained under each-step mining and different strengths of filling body.Finally,it was determined that the strength range of filling body in stope was 1.5～2 MPa for safe and efficient mining in the Wohushan mine.
During the second-step mining of mineral resources,the strength of filling body is a key factor affecting the safety and stability of stope.Taking the Wohushan mine as a research object,the inversion on strength parameters of filling body in stope was carried out by theoretical analysis and numerical simulation.Then,the strength of filling body was determined for the stope span and height of 12.5 m.By means of engineering analogy,mathematical model and empirical formula,the reasonable strength range of filling body in stope was determined as 0.4～2.3 MPa.5 kinds of calculation schemes were designed.And the stress and displacement responses law of stope was obtained under each-step mining and different strengths of filling body.Finally,it was determined that the strength range of filling body in stope was 1.5～2 MPa for safe and efficient mining in the Wohushan mine.
引文
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[3]刘超,韩斌,孙伟,等.高寒地区废石破碎胶结充填体强度特性试验研究与工业应用[J].岩石力学与工程学报,2015,34(1):139-147.
[4]刘志祥,周士霖.充填体强度设计知识库模型[J].湖南科技大学学报(自然科学版),2012,27(2):7-12.
[5]曹帅,宋卫东,薛改利,等.考虑分层特性的尾砂胶结充填体强度折减试验研究[J].岩土力学,2015,36(10):2869-2876.
[6]谷岩.新型胶结材料研发与充填体强度优化设计[D].唐山:华北理工大学,2013.
[7]曾照凯,张义平,王永明.高阶段采场充填体强度及稳定性研究[J].金属矿山,2010,39(1):31-34.
[8]李典,冯国瑞,郭育霞,等.基于响应面法的充填体强度增长规律分析[J].煤炭学报,2016,41(2):392-398.
[9]谷岩,南世卿,李富平.矿渣胶结材料充填体强度确定及配比优化[J].金属矿山,2014,43(3):10-14.
[10]徐飞,褚洪涛,刘晓亮.某铜矿全尾砂充填体强度研究[J].金属矿山,2013,42(12):37-39.
[11]刘志祥.深部开采高阶段尾砂充填体力学与非线性优化设计[D].长沙:中南大学,2005.
[12]卢平.确定胶结充填体强度的理论与实践[J].黄金,1992(3):14-19.
[13]梅志恒,李延杰,孟恒,等.挑水河磷矿条带充填开采胶结充填体强度设计研究[J].化工矿物与加工,2017(9):33-36.
[14]臧传伟,周立超,席俊辉,等.卧虎山矿二步矿房采场稳定性分析及应用[J].矿业研究与开发,2016,36(3):40-44.
[15]邹南荣,尚振华,秦忠虎.深部铜矿高阶段充填体强度设计及稳定性计算[J].采矿技术,2017,17(6):30-33.
[16]许红坤.采场结构参数优化及胶结矿柱可靠度分析[D].长沙:中南大学,2013.