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1、充填開采控制地表沉陷的關(guān)鍵因素分析瞿群迪，姚強(qiáng)嶺，李學(xué)華，榮同義(中國礦業(yè)大學(xué)礦業(yè)工程學(xué)院，江蘇徐州221116)摘要：充填開采是控制地表沉陷的有效技術(shù)手段之一．為了提高充填開采的地表沉陷控制效果，采用理論分析和數(shù)值計算研究方法，對采空區(qū)全部充填法的地表下沉系數(shù)進(jìn)行了預(yù)計，分析了充填開采控制地表沉陷的各影響因素．研究表明：充填前頂?shù)装逡平?、充填體欠接頂量和充填體壓縮量是造成地表下沉三個關(guān)鍵因素，提高充填體的接頂率是減小充填開采地表下沉系數(shù)的最有效途徑，提高充填體強(qiáng)度可以在一定程度上提高對地表下沉的控制效果．關(guān)鍵詞：充填開采；地表沉陷；影響因素；充填體接頂率中圖分類號：TD82
2、3．7文獻(xiàn)標(biāo)識碼：AKeyFactorsAffectingControlSurfaceSubsidenceinBackfillingMiningAbstract：Backfillingminingisoneofthemosteffectivetechnicalmeasurestocontrolsurfacesubsidence．Inordertoreprovethecontroleffectofsurfacesubsidencecausedbybackfillingmining，weestimatethesubsidencefactorofthefullgobackfillin
3、gandalsoanalyzehowthesefactorsaffectingthesurfacesubsidencethroughtheoreticalanalysisandnumericalcalculation．Theresultshowsthattheroof-to—floorconvergencebeforebackfilling，thegapthebackfillingbodyandroof，andthecompressionamountofthebackfillingbodyarethekeyfactoraffectingsurfacesubsidence．Tor
4、aisetheratioofbackfillingbodyheighttominingheightisthemosteffectivewaytoreducethesubsidencefactorsinbackfillingmining．Thesubsidencecontroleffectcanbealsoimprovedtoacertainextentbyincreasingthestrengthofthebackfillingbody．Keywords：backfillingmining；surfacesubsidence；influencingfactors；ratioof
5、backfilling；煤礦通風(fēng)瓦斯在燃?xì)廨啓C(jī)中的催化燃燒特性尹娟翁一武(1．上海交通大學(xué)機(jī)械與動力工程學(xué)院，上海20003摘要：在不同進(jìn)口溫度、工作壓力和當(dāng)量比條件下，研究了煤礦通風(fēng)瓦斯氣在燃?xì)廨啓C(jī)催化燃燒室內(nèi)部的燃燒特性，對數(shù)值模擬結(jié)果與試驗(yàn)結(jié)果進(jìn)行了對比，并分析了催化燃燒對超低濃度瓦斯氣性能的影響．結(jié)果表明：增加甲烷濃度(或當(dāng)量比)可促進(jìn)超低濃度甲烷的催化燃燒；提高催化燃燒室進(jìn)I：／溫度或工作壓力可相應(yīng)提高煤礦通風(fēng)瓦斯燃?xì)廨啓C(jī)系統(tǒng)的效率．關(guān)鍵詞：燃?xì)廨啓C(jī)；煤礦通風(fēng)瓦斯；超低濃度瓦斯氣；催化燃燒特性；數(shù)值計算CharacteristicsofCoaIMineVentilat
6、ionAirMethaneCombustedbyCatalyticinGasTurbineAbstract：Thecombustioncharacteristicsofthecoalmineventilationairmethaneinacatalyticcombustorofagasturbinewereinvestigatedunderdifferentinlettemperatures，operatingpressuresandequivalentceratios．Thesimulationresultswerecomparedwiththeexperimentresul
7、tsandtheinfluencefactorsofcatalyticcombustionthatcouldaffecttheactivityofultra—lowconcentrationmethanewerefound．ResultsshowthatthecatalyticcombustionoftheMethanewithultra-lowconcentrationcouldbearatedbyincreasingitsconcentration(orvalenceratio)．The
