高應(yīng)變率下難動(dòng)用鐵礦爆破回采損傷規(guī)律研究
發(fā)布時(shí)間:2018-10-24 21:07
【摘要】:隨著資源的不斷減少,難動(dòng)用資源的開發(fā)利用愈顯重要。以程潮鐵礦西區(qū)保安礦柱爆破回采工程為背景,考慮到爆破過程中高應(yīng)變率會(huì)導(dǎo)致材料的動(dòng)力硬化行為以及爆破作用引起的巖體損傷,建立了自定義動(dòng)態(tài)損傷本構(gòu)模型。并通過二次開發(fā)將其嵌入LS-DYNA中,通過與程潮鐵礦西區(qū)爆破回采實(shí)例驗(yàn)證自定義本構(gòu)模型的正確性。最后基于改進(jìn)損傷本構(gòu)模型進(jìn)一步深入分析,得到較為合適的回采方式和回采順序,并研究了采場巖體的損傷特性,研究成果可為實(shí)際施工提供指導(dǎo)。
[Abstract]:With the decrease of resources, the development and utilization of hard-to-use resources become more and more important. A self-defined dynamic damage constitutive model was established based on the blasting stoping project of Baoan pillar in the west of Chengchao Iron Mine. Considering that the high strain rate would lead to the dynamic hardening behavior of materials and the rock mass damage caused by blasting, a self-defined dynamic damage constitutive model was established. It is embedded in LS-DYNA through secondary development, and the correctness of the self-defined constitutive model is verified by an example of blasting mining in the western part of Chengchao Iron Mine. Finally, based on the improved damage constitutive model, a more suitable mining method and mining sequence are obtained, and the damage characteristics of stope rock mass are studied. The research results can provide guidance for practical construction.
【作者單位】: 道路橋梁與結(jié)構(gòu)工程湖北省重點(diǎn)實(shí)驗(yàn)室;武漢理工大學(xué)土木工程與建筑學(xué)院;武漢地產(chǎn)開發(fā)投資集團(tuán)有限公司;武漢鋼鐵集團(tuán)開圣科技有限責(zé)任公司;
【基金】:湖北省自然科學(xué)基金重點(diǎn)項(xiàng)目(編號(hào):2015CFA136) 國家自然科學(xué)基金項(xiàng)目(編號(hào):51378500);國家自然科學(xué)基金面上項(xiàng)目(編號(hào):51274157)
【分類號(hào)】:TD853.391;TD861.1
本文編號(hào):2292557
[Abstract]:With the decrease of resources, the development and utilization of hard-to-use resources become more and more important. A self-defined dynamic damage constitutive model was established based on the blasting stoping project of Baoan pillar in the west of Chengchao Iron Mine. Considering that the high strain rate would lead to the dynamic hardening behavior of materials and the rock mass damage caused by blasting, a self-defined dynamic damage constitutive model was established. It is embedded in LS-DYNA through secondary development, and the correctness of the self-defined constitutive model is verified by an example of blasting mining in the western part of Chengchao Iron Mine. Finally, based on the improved damage constitutive model, a more suitable mining method and mining sequence are obtained, and the damage characteristics of stope rock mass are studied. The research results can provide guidance for practical construction.
【作者單位】: 道路橋梁與結(jié)構(gòu)工程湖北省重點(diǎn)實(shí)驗(yàn)室;武漢理工大學(xué)土木工程與建筑學(xué)院;武漢地產(chǎn)開發(fā)投資集團(tuán)有限公司;武漢鋼鐵集團(tuán)開圣科技有限責(zé)任公司;
【基金】:湖北省自然科學(xué)基金重點(diǎn)項(xiàng)目(編號(hào):2015CFA136) 國家自然科學(xué)基金項(xiàng)目(編號(hào):51378500);國家自然科學(xué)基金面上項(xiàng)目(編號(hào):51274157)
【分類號(hào)】:TD853.391;TD861.1
【相似文獻(xiàn)】
相關(guān)期刊論文 前8條
1 邵鵬,張勇;高應(yīng)變率下砂巖動(dòng)態(tài)特性的研究[J];建井技術(shù);1997年S1期
2 岑奪豐;黃達(dá);;高應(yīng)變率單軸壓縮下巖體裂隙擴(kuò)展的細(xì)觀位移模式[J];煤炭學(xué)報(bào);2014年03期
3 蔣德全,陳慶壽,于亞倫;高應(yīng)變率作用下巖石的微觀損傷特征[J];現(xiàn)代地質(zhì);1996年04期
4 喬河,王樹仁;高應(yīng)變率下巖石動(dòng)態(tài)本構(gòu)關(guān)系試驗(yàn)研究現(xiàn)狀[J];工程爆破;1996年02期
5 李振華,王林,李化敏;煤樣的微細(xì)觀裂紋損傷本構(gòu)模型[J];西安科技學(xué)院學(xué)報(bào);2004年01期
6 岳洋;;基于不同分布的巖石損傷本構(gòu)模型的比較[J];山西建筑;2010年24期
7 代高飛,尹光志,皮文麗;單軸壓縮荷載下煤巖的彈脆性損傷本構(gòu)模型[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2004年08期
8 康亞明;劉長武;陳義軍;潘樹華;;水壓軸壓聯(lián)合作用下煤巖的統(tǒng)計(jì)損傷本構(gòu)模型研究[J];西安建筑科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年02期
,本文編號(hào):2292557
本文鏈接:http://sikaile.net/kejilunwen/kuangye/2292557.html
最近更新
教材專著