黄金
黃金
황금
GOLD JOURNAL
2014年
10期
38-42
,共5页
玛旦江?吐木尔%王贻明%吴爱祥
瑪旦江?吐木爾%王貽明%吳愛祥
마단강?토목이%왕이명%오애상
崩落采矿法%出矿巷道%二次应力分布%变形机制%数值模拟
崩落採礦法%齣礦巷道%二次應力分佈%變形機製%數值模擬
붕락채광법%출광항도%이차응력분포%변형궤제%수치모의
caving method%ore-drawing roadway%secondary stress distribution%deformation mechanism%numeri-cal simulation
研究了九顶山铜钼矿2480 m水平201采场出矿巷道开挖后的二次应力分布及巷道变形机制。首先根据现场工程地质勘查和室内岩石力学试验对巷道围岩进行了岩石力学参数确定；在此基础上运用FLAC3D数值模拟软件研究了巷道开挖后的应力应变状态，分析了围岩变形机制。研究结果表明，围岩条件不同的出矿巷道其二次应力分布影响范围有所差异，但围岩主应力总体上表现为由巷道边墙中下部位的压应力集中带逐步过渡到拱顶、底板一定范围内的拉应力集中带。
研究瞭九頂山銅鉬礦2480 m水平201採場齣礦巷道開挖後的二次應力分佈及巷道變形機製。首先根據現場工程地質勘查和室內巖石力學試驗對巷道圍巖進行瞭巖石力學參數確定；在此基礎上運用FLAC3D數值模擬軟件研究瞭巷道開挖後的應力應變狀態，分析瞭圍巖變形機製。研究結果錶明，圍巖條件不同的齣礦巷道其二次應力分佈影響範圍有所差異，但圍巖主應力總體上錶現為由巷道邊牆中下部位的壓應力集中帶逐步過渡到拱頂、底闆一定範圍內的拉應力集中帶。
연구료구정산동목광2480 m수평201채장출광항도개알후적이차응력분포급항도변형궤제。수선근거현장공정지질감사화실내암석역학시험대항도위암진행료암석역학삼수학정；재차기출상운용FLAC3D수치모의연건연구료항도개알후적응력응변상태，분석료위암변형궤제。연구결과표명，위암조건불동적출광항도기이차응력분포영향범위유소차이，단위암주응력총체상표현위유항도변장중하부위적압응력집중대축보과도도공정、저판일정범위내적랍응력집중대。
The secondary stress distribution and deformation mechanism of excavated ore-drawing roadway of Lev-el 2480,Stope 201 in Jiudingshan copper-molybdenum mine are studied.Firstly,rock mechanical parameters of the wall rocks of tunnel are determined by field engineering geological investigation and indoor rock mechanics experi-ments.The state of stress after the excavation of ore-drawing roadway is simulated by FLAC3D before the wall rock de-formation mechanism is analyzed.The results show that the secondary stress distribution with different wall rock condi-tions differs in distribution ranges;but the principal stress distribution transits from compressive stress centralized in mid and lower part of mining tunnel sidewalls to tensile stress centralized in mining tunnel vault and floor.
