International Journal of Mining and Geo-Engineering最新文献_第5页

Identification of Ti- anomaly in stream sediment geochemistry using of stepwise factor analysis and multifractal model in Delijan district, Iran 利用逐步因子分析和多重分形模型识别伊朗德利扬地区水系沉积物地球化学中Ti异常

International Journal of Mining and Geo-Engineering Pub Date : 2016-06-01 DOI: 10.22059/IJMGE.2016.57858

F. Ghadimi, M. Ghomi, M. Sedigh

引用次数: 7

Application of tests of goodness of fit in determining the probability density function for spacing of steel sets in tunnel support system 拟合优度试验在确定隧道支护钢组间距概率密度函数中的应用

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56106

Farnoosh Basaligheh, A. Keyhani

{"title":"Application of tests of goodness of fit in determining the probability density function for spacing of steel sets in tunnel support system","authors":"Farnoosh Basaligheh, A. Keyhani","doi":"10.22059/IJMGE.2015.56106","DOIUrl":"https://doi.org/10.22059/IJMGE.2015.56106","url":null,"abstract":"One of the conventional methods for temporary support of tunnels is to use steel sets with shotcrete. The nature of a temporary support system demands a quick installation of its structures. As a result, the spacing between steel sets is not a fixed amount and it can be considered as a random variable. Hence, in the reliability analysis of these types of structures, the selection of an appropriate probability distribution function of spacing of steel sets is essential. In the present paper, the distances between steel sets are collected from an under-construction tunnel and the collected data is used to suggest a proper Probability Distribution Function (PDF) for the spacing of steel sets. The tunnel has two different excavation sections. In this regard, different distribution functions were investigated and three common tests of goodness of fit were used for evaluation of each function for each excavation section. Results from all three methods indicate that the Wakeby distribution function can be suggested as the proper PDF for spacing between the steel sets. It is also noted that, although the probability distribution function for two different tunnel sections is the same, the parameters of PDF for the individual sections are different from each other.","PeriodicalId":36564,"journal":{"name":"International Journal of Mining and Geo-Engineering","volume":"35 1","pages":"187-203"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79177297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Internal erosion under spillway rested on an embankment dam 溢洪道内部侵蚀作用于堤防坝体上

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56112

M. Sedghi-Asl, M. Parvizi, Mohsen Armin, R. Flores-berrones

引用次数: 8

High performance of the support vector machine in classifying hyperspectral data using a limited dataset 支持向量机在有限数据集高光谱数据分类中的高性能研究

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56111

Amir Salimi, M. Ziaii, M. H. Zadeh, A. Amiri, S. Karimpouli

{"title":"High performance of the support vector machine in classifying hyperspectral data using a limited dataset","authors":"Amir Salimi, M. Ziaii, M. H. Zadeh, A. Amiri, S. Karimpouli","doi":"10.22059/IJMGE.2015.56111","DOIUrl":"https://doi.org/10.22059/IJMGE.2015.56111","url":null,"abstract":"To prospect mineral deposits at regional scale, recognition and classification of hydrothermal alteration zones using remote sensing data is a popular strategy. Due to the large number of spectral bands, classification of the hyperspectral data may be negatively affected by the Hughes phenomenon. A practical way to handle the Hughes problem is preparing a lot of training samples until the size of the training set is adequate and comparable with the number of the spectral bands. In order to gather adequate ground truth instances as training samples, a time-consuming and costly ground survey operation is needed. In this situation that preparing enough field samples is not an easy task, using an appropriate classifier which can properly work with a limited training dataset is highly desirable. Among the supervised classification methods, the Support Vector Machine is known as a promising classifier that can produce acceptable results even with limited training data. Here, this capability is evaluated when the SVM is used to classify the alteration zones of Darrehzar district. For this purpose, only 12 sampled instances from the study area are utilized to classify Hyperion hyperspectral data with 165 useable spectral bands. Results demonstrate that if parameters of the SVM, namely C and σ, are accurately adjusted, the SVM can be successfully used to identify alteration zones when field data samples are not available enough.","PeriodicalId":36564,"journal":{"name":"International Journal of Mining and Geo-Engineering","volume":"16 1","pages":"253-268"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85165711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Investigation on life cycle assessment of lead and zinc production 铅锌生产生命周期评价研究

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56110

Sabereh Nazari, M. Gharabaghi

引用次数: 4

Physical and theoretical modeling of rock slopes against block-flexure toppling failure 岩石边坡抗块曲倾倒破坏的物理和理论模拟

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56103

M. Amini, Mohammad Golamzadeh, M. Khosravi

引用次数: 20

Effects of statistical distribution of joint trace length on the stability of tunnel excavated in jointed rock mass 节理轨迹长度统计分布对节理岩体开挖隧道稳定性的影响

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56115

K. Ghorbani, M. Zahedi, Ahmad Asaadi

{"title":"Effects of statistical distribution of joint trace length on the stability of tunnel excavated in jointed rock mass","authors":"K. Ghorbani, M. Zahedi, Ahmad Asaadi","doi":"10.22059/IJMGE.2015.56115","DOIUrl":"https://doi.org/10.22059/IJMGE.2015.56115","url":null,"abstract":"The rock masses in a construction site of underground cavern are generally not continuous, due to the presence of discontinuities, such as bedding, joints, faults, and fractures. The performance of an underground cavern is principally ruled by the mechanical behaviors of the discontinuities in the vicinity of the cavern. During underground excavation, many surrounding rock failures have close relationship with joints. The stability study on tunnel in jointed rock mass is of importance to rock engineering, especially tunneling and underground space development. In this study, using the probability density distribution functions of negative exponential, log-normal and normal, we investigated the effect of joint trace length on the stability parameters such as stress and displacement of tunnel constructed in rock mass using UDEC (Universal Distinct Element Code). It was obtained that normal distribution function of joint trace length is more critical on the stability of tunnel, and exponential distribution function has less effect on the tunnel stability compared to the two other distribution functions.","PeriodicalId":36564,"journal":{"name":"International Journal of Mining and Geo-Engineering","volume":"9 1","pages":"289-296"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87667574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Stability assessment of the Farrokhi earth embankment dam using the pseudo-static and deformation based methods 基于拟静力和变形法的法罗基土石坝稳定性评价

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56107

Hamzeh Fallah, H. Noferesti

引用次数: 7

Mineral resources and geo-engineering 矿产资源与地球工程

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56108

F. Habashi

引用次数: 0

Managing in situ gold concentrations in placers 就地管理砂矿中的金浓度

International Journal of Mining and Geo-Engineering Pub Date : 2015-12-01 DOI: 10.22059/IJMGE.2015.56109

A. Mikhailov

引用次数: 0