A Novel Method to Evaluate the Effect of Slope Blasting under Impact Loading
In this paper, the quantitative evaluation of the explosion effect based on the fuzzy comprehensive evaluation method is proposed to describe the qualitative evaluation results. The selected state characteristic parameters are expressed by two kinds of membership functions, fuzzy normal and triangul...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/6029190 |
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| author | Wenhai Zhou Zhenbao Li Xin Wu Shujiang Wang Yaru Lv Xiaoming Lou Chaofei Du Rui Liang |
| author_facet | Wenhai Zhou Zhenbao Li Xin Wu Shujiang Wang Yaru Lv Xiaoming Lou Chaofei Du Rui Liang |
| author_sort | Wenhai Zhou |
| collection | DOAJ |
| description | In this paper, the quantitative evaluation of the explosion effect based on the fuzzy comprehensive evaluation method is proposed to describe the qualitative evaluation results. The selected state characteristic parameters are expressed by two kinds of membership functions, fuzzy normal and triangular distribution membership functions, and preliminary evaluation results are obtained. The validity index of the maximum membership principle is used to assess the accuracy of the evaluation results of two algorithms, and a relevant approaching degree is chosen to optimize the results. The entire evaluation process selects eleven indicators to form an evaluation set, including the boulder yield, root rate, flying distance of flyrock, explosive consumption, postcracking distance, detonator unit consumption, vibration velocity, loose coefficient, cast distance, throw rate, and blasted volume per meter of hole. Part of the indicator parameters are derived from field test monitoring, and another part of the indicator parameters are derived from numerical simulation. The simulation process uses the user-defined material interface function provided by LS-DYNA. And the numerical model of slope blasting is established by embedding the evolution relationship of tensile and compressive damage into the elastoplastic constitutive material. The evaluation method proposed in this paper is used to evaluate the postexplosion effect of Zijin Mountain gold-copper mine slope cast blasting. The results demonstrate that the fuzzy normal distribution membership function can correlate the state characteristic information and evaluation index effectively, and the working condition after explosion can be reflected accurately. Additionally, the influencing factors can be ranked by the importance degrees according to the calculated value of the evaluation index. |
| format | Article |
| id | doaj-art-2c7e89345944409c8666a7100a20e24f |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-2c7e89345944409c8666a7100a20e24f2025-02-03T01:04:40ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/60291906029190A Novel Method to Evaluate the Effect of Slope Blasting under Impact LoadingWenhai Zhou0Zhenbao Li1Xin Wu2Shujiang Wang3Yaru Lv4Xiaoming Lou5Chaofei Du6Rui Liang7School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, ChinaInstitute for Explosive Technology, Fuzhou University, Fuzhou 350116, ChinaFaculty of Engineering, China University of Geosciences, Wuhan 430074, ChinaSchool of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, ChinaIn this paper, the quantitative evaluation of the explosion effect based on the fuzzy comprehensive evaluation method is proposed to describe the qualitative evaluation results. The selected state characteristic parameters are expressed by two kinds of membership functions, fuzzy normal and triangular distribution membership functions, and preliminary evaluation results are obtained. The validity index of the maximum membership principle is used to assess the accuracy of the evaluation results of two algorithms, and a relevant approaching degree is chosen to optimize the results. The entire evaluation process selects eleven indicators to form an evaluation set, including the boulder yield, root rate, flying distance of flyrock, explosive consumption, postcracking distance, detonator unit consumption, vibration velocity, loose coefficient, cast distance, throw rate, and blasted volume per meter of hole. Part of the indicator parameters are derived from field test monitoring, and another part of the indicator parameters are derived from numerical simulation. The simulation process uses the user-defined material interface function provided by LS-DYNA. And the numerical model of slope blasting is established by embedding the evolution relationship of tensile and compressive damage into the elastoplastic constitutive material. The evaluation method proposed in this paper is used to evaluate the postexplosion effect of Zijin Mountain gold-copper mine slope cast blasting. The results demonstrate that the fuzzy normal distribution membership function can correlate the state characteristic information and evaluation index effectively, and the working condition after explosion can be reflected accurately. Additionally, the influencing factors can be ranked by the importance degrees according to the calculated value of the evaluation index.http://dx.doi.org/10.1155/2020/6029190 |
| spellingShingle | Wenhai Zhou Zhenbao Li Xin Wu Shujiang Wang Yaru Lv Xiaoming Lou Chaofei Du Rui Liang A Novel Method to Evaluate the Effect of Slope Blasting under Impact Loading Shock and Vibration |
| title | A Novel Method to Evaluate the Effect of Slope Blasting under Impact Loading |
| title_full | A Novel Method to Evaluate the Effect of Slope Blasting under Impact Loading |
| title_fullStr | A Novel Method to Evaluate the Effect of Slope Blasting under Impact Loading |
| title_full_unstemmed | A Novel Method to Evaluate the Effect of Slope Blasting under Impact Loading |
| title_short | A Novel Method to Evaluate the Effect of Slope Blasting under Impact Loading |
| title_sort | novel method to evaluate the effect of slope blasting under impact loading |
| url | http://dx.doi.org/10.1155/2020/6029190 |
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