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1、第36卷第3期礦冶工程V0l_36№32016年o6月MININGANDMETALLURGICALENGINEERibfGJune2016巖體可爆性分級(jí)的PSM-CM方法①趙國(guó)彥,龔夢(mèng)龍,梁偉章,洪昌壽(中南大學(xué)資源與安全工程學(xué)院,湖南長(zhǎng)沙410083)摘要:針對(duì)巖體可爆性分級(jí)中尚未解決的模糊性與隨機(jī)性問(wèn)題,結(jié)合乘積標(biāo)度法(PSM)和云模型(CM)理論,提出了一種巖體可爆性分級(jí)的PSM—CM方法。選用巖石容重、抗拉強(qiáng)度、沖擊動(dòng)載強(qiáng)度和完整性系數(shù)作為分級(jí)指標(biāo),依據(jù)分級(jí)標(biāo)準(zhǔn),計(jì)算各指標(biāo)隸屬于不同等級(jí)的云模型
2、參數(shù),通過(guò)正向高斯云發(fā)生器,求得實(shí)測(cè)樣本指標(biāo)值各等級(jí)確定度,再結(jié)合基于乘積標(biāo)度法得到的各指標(biāo)權(quán)重,計(jì)算樣本綜合確定度,根據(jù)最大綜合確定度隸屬等級(jí)確定巖體可爆性級(jí)別。該方法能解決可爆性分級(jí)中諸多因素的不確定性問(wèn)題,還可對(duì)同一等級(jí)的巖體可爆性大小進(jìn)行排序。將該方法應(yīng)用于貴州某磷礦山巖體可爆性分級(jí)中,結(jié)果表明,該方法具有較高的準(zhǔn)確性和可靠性,可在工程實(shí)際中推廣應(yīng)用。關(guān)鍵詞:巖體可爆性;分級(jí);乘積標(biāo)度法;云模型中圖分類號(hào):TD235.1文獻(xiàn)標(biāo)識(shí)碼:Adoi:10.3969/j.issn.0253-6099.20
3、16.03.006文章編號(hào):0253-6099(2016)03-O021-05RockMassBlastabilityClassificationUsingtheCombinationofPSMandCMZHAOGuo—yan,GONGMeng-long,LIANGWei—zhang,HONGChang—shou(SchoolofResourcesandSafetyEngineering,CentralSouthUniversity,Changsha410083,Hunan,China)Abstract
4、:Aimingatthefuzzinessandrandomnessinrockmassblastabilityclassification,productscalingmethod(PSM)andcloudmodel(CM)werecombinedtoestablishaPSM-CMmodelforrockmassblastabilityclassification.Withthebulkdensity,tensilestrength,dynamicstrengthunderimpactandrock
5、massintegrityindexchosenasevaluationindexes,thecloudmodelparameterswerecalculatedforeachclassificationindexatdifferentlevelsbasedontheclassificationstandard.Andthegenerationalgorithmofnormalcloudwasadoptedtoanalyzethecertaintydegreesofmeasuredindicatorst
6、oeachevaluationstandard.Thenthecomprehensivecertaintydegreeswerecalculatedaccordingtotheweightsofevaluationindicatorsobtainedbyproductscalingmethod,andtheblastabilitygradeisdeterminedbythegradeofmaximumcomprehensivecertaintydegree.Thismethodcannotonlysol
7、vetheuncertaintyofmanyfactorsintherockmassblastabilityclassification,butalsosortblastabilitybysizeforthesamelevelrockmasses.Finally,thismethodwasadoptedintherockmassblastabilityclassificationforaphosphatemineinGuizhouProvince.Theaccuracyandreliabilityofr
8、esultsindicateitcanbewidelyappliedintoengineeringpractice.Keywords:rockmassblastability;rating;productscalingmethod;cloudmodel巖體可爆性是指巖體在爆破作用下發(fā)生破裂的難復(fù)雜性和相關(guān)理論的局限性,國(guó)內(nèi)外對(duì)巖體可爆性分易程度¨J。在爆破工程實(shí)踐中,巖體可爆性分級(jí)不僅級(jí)尚未形成統(tǒng)一方法。為爆破設(shè)計(jì)和爆破優(yōu)化提供指導(dǎo),同時(shí)也