上向水平分层充填法矿房跨度的确定及采场稳定性分析
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摘要
上向水平分层充填法适用于各种倾斜角度以及各种厚度的矿体开采,在矿山领域得到广泛应用,然而该方法矿房安全跨度的确定一直是矿山开采设计的难题。结合Mathews稳定图法和数值计算法,先通过Mathews稳定图法确定矿房最大安全跨度,然后通过数值软件进行模拟分析,确定矿房稳定性,从而得出矿房的合理跨度,为上向水平分层充填法矿房跨度的确定提供依据。
The upward horizontal layered filling method is suitable for mining ore bodies with various angles and various thicknesses.It has been widely used in the mining field.However,the determination of the safe span of the mine has always been a difficulty in mining design.Combining Mathews stability diagram method and numerical calculation method,the maximum safety span of the mine through Mathews stability diagram method was firstly determined in this paper,and then simulation analysis by numerical software was carried out to determine the stability of the mine,thus a reasonable span of the mine was obtained,which provided a basis for determining the span of the mine by the horizontal stratified filling method.
The upward horizontal layered filling method is suitable for mining ore bodies with various angles and various thicknesses.It has been widely used in the mining field.However,the determination of the safe span of the mine has always been a difficulty in mining design.Combining Mathews stability diagram method and numerical calculation method,the maximum safety span of the mine through Mathews stability diagram method was firstly determined in this paper,and then simulation analysis by numerical software was carried out to determine the stability of the mine,thus a reasonable span of the mine was obtained,which provided a basis for determining the span of the mine by the horizontal stratified filling method.
引文
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[2]NOMIKOS P P,SOFIANOS A I,TSOUTRELIS C E.Structural response of vertically multi-jointed roof rock beams[J].International Journal of Rock Mechanics&Mining Sciences,2002,39(1):79-94.
[3]刘培正,张传信,胡永泉,等.厚大矿体分段空场嗣后充填采场结构参数优化研究[J].金属矿山,2009(11):16-19.
[4]胡高建,杨天鸿,胡忠强.基于Mathews稳定图等方法的多角度采空区群稳定性分析评价[J].采矿与安全工程学报,2017,34(2):348-354.
[5]TRUEMAN R,MIKULA P,MAWDESLEY C A,et al.Experience in Australia with the application of the Mathew's method for open stope design[J].Cim Bulletin,2000,93:162-167.
[6]BIENIAWSKI Z T.Engineering rock mass classifications:Acomplete manual for engineers and geologists in mining[M].New York:Wiley,1989.
[7]MAWDESLEY C.Using logistic regression to investigate and improve an empirical design method[J].International Journal of Rock Mechanics and Mining Sciences,2004,41(增刊1):756-761.
[8]王金波,周靖人,赵永,等.采场稳定性分析与参数优化的图表法[J].金属矿山,2016(5):187-191.