现代矿业
現代礦業
현대광업
Express Information of Mining Industry
2011年
8期
32-34
,共3页
孙仕平%张友锋%何晓文%江文武
孫仕平%張友鋒%何曉文%江文武
손사평%장우봉%하효문%강문무
罗河铁矿%岩爆几率%预测
囉河鐵礦%巖爆幾率%預測
라하철광%암폭궤솔%예측
Luohe iron ore%Criterion of rock burst%Prediction
在地质资料、地应力分布规律、岩石力学参数指标等研究成果的基础上,采用多种岩爆判据分别对罗河铁矿的岩爆几率进行分析预测,掌握井下岩爆的倾向性。研究结果表明,凝灰岩、次生石英岩、蚀变粗安岩发生岩爆的几率较少,但碱性长石岩、膏辉岩和磁铁矿三类典型矿岩均存在中等偏上的岩爆倾向,且随着深度的延伸,其岩爆等级加大,为矿山的安全高效生产提供技术保障。
在地質資料、地應力分佈規律、巖石力學參數指標等研究成果的基礎上,採用多種巖爆判據分彆對囉河鐵礦的巖爆幾率進行分析預測,掌握井下巖爆的傾嚮性。研究結果錶明,凝灰巖、次生石英巖、蝕變粗安巖髮生巖爆的幾率較少,但堿性長石巖、膏輝巖和磁鐵礦三類典型礦巖均存在中等偏上的巖爆傾嚮,且隨著深度的延伸,其巖爆等級加大,為礦山的安全高效生產提供技術保障。
재지질자료、지응력분포규률、암석역학삼수지표등연구성과적기출상,채용다충암폭판거분별대라하철광적암폭궤솔진행분석예측,장악정하암폭적경향성。연구결과표명,응회암、차생석영암、식변조안암발생암폭적궤솔교소,단감성장석암、고휘암화자철광삼류전형광암균존재중등편상적암폭경향,차수착심도적연신,기암폭등급가대,위광산적안전고효생산제공기술보장。
On the basis of research results like geological data,ground stress distribution law,rock mechanics parameter indexes and so on,analysis and forecast were done on rock burst probability of Luohe Iron Mine by adopted various kinds of rock burst criterion separately,controlled the tendency of underground rock burst.The result indicated,probability of rock burst of ash tuff,secondary quartzite,altered trachyandensite were little,but rock burst possibilities of three typical rocks of alkaline feldspathic rock,paste pyroxenite and magnetite were all above average,with the increase of depth,the level of rock burst was greater.The results provided technical support for safe and efficient production of mine.
