铜业工程
銅業工程
동업공정
Copper Engineering
2015年
5期
12-16
,共5页
高云瑞%刘长武%康亚明%黄常玲%卢邦稳
高雲瑞%劉長武%康亞明%黃常玲%盧邦穩
고운서%류장무%강아명%황상령%로방은
浅埋深%薄基岩%厚松散层%多因素%岩层活动规律%正交试验
淺埋深%薄基巖%厚鬆散層%多因素%巖層活動規律%正交試驗
천매심%박기암%후송산층%다인소%암층활동규률%정교시험
shallow mining depth%thin bedrock%thick loose bed%multi-factor%movement behavior of overlying strata%orthogonal test
根据浅埋深薄基岩煤层赋存特点,采用Flac3D数值模拟方法进行正交试验,系统分析了松散层厚度、基岩厚度、采高和推进速度对浅埋深薄基岩厚松散层岩层活动的影响,确定了各因素对岩层活动影响的重要性.结果表明:各因素对岩层活动影响的重要性从岩层活动的不同指标来看是不一样的.针对初次来压,基岩厚度为主要影响因素;对于周期来压,松散层厚度为主要影响因素;采高为地表位移的主要影响因素;综合来看,对于浅埋深薄基岩厚松散层采场岩层活动影响的因素由主到次依次为基岩厚度→松散层厚度→采高→推进速度.
根據淺埋深薄基巖煤層賦存特點,採用Flac3D數值模擬方法進行正交試驗,繫統分析瞭鬆散層厚度、基巖厚度、採高和推進速度對淺埋深薄基巖厚鬆散層巖層活動的影響,確定瞭各因素對巖層活動影響的重要性.結果錶明:各因素對巖層活動影響的重要性從巖層活動的不同指標來看是不一樣的.針對初次來壓,基巖厚度為主要影響因素;對于週期來壓,鬆散層厚度為主要影響因素;採高為地錶位移的主要影響因素;綜閤來看,對于淺埋深薄基巖厚鬆散層採場巖層活動影響的因素由主到次依次為基巖厚度→鬆散層厚度→採高→推進速度.
근거천매심박기암매층부존특점,채용Flac3D수치모의방법진행정교시험,계통분석료송산층후도、기암후도、채고화추진속도대천매심박기암후송산층암층활동적영향,학정료각인소대암층활동영향적중요성.결과표명:각인소대암층활동영향적중요성종암층활동적불동지표래간시불일양적.침대초차래압,기암후도위주요영향인소;대우주기래압,송산층후도위주요영향인소;채고위지표위이적주요영향인소;종합래간,대우천매심박기암후송산층채장암층활동영향적인소유주도차의차위기암후도→송산층후도→채고→추진속도.
Based on special occurrence characteristic of shallow depth of burial and thin bedrock coal seam,through the orthogonal test designed by the FLAC3D numerical simulations systematically analyzes the influence of multi-factor ( bedrock thickness, loose bed thickness, mining height and advancing speed ) synergism on the movement behavior of overlying strata in shallow depth of burial and thin bedrock;The primary and secondary factors are obtained, which influences shallow thin bedrock face roof strata moving. Results show that from the different index of strata movement, the importance of the factors that affect strata movement is not the same. From the perspective of initial pressure, bedrock thickness is the main factors affecting;From the respect of periodic weighting, loose bed thickness is the main factors affecting; while from the aspect of the surface displacement, mining height is the main factors affecting; Taken together, the influence factors from main to secondary are bedrock thickness, loose bed thickness, mining height and advancing speed.