JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa)最新文献_第2页

JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa) Pub Date : 2022-03-17 DOI: 10.17758/iicbe3.c0322250

E. Fosso-Kankeu

引用次数: 0

Consideration of Total Station as Baseline for Tape Measurements Improvement in Holing Prediction at Underground Deep Level Gold Mine 考虑全站仪作为基准线改进地下深部金矿钻孔预测中的卷尺测量

JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa) Pub Date : 2022-03-17 DOI: 10.17758/iicbe3.c0322202

G. Khoza, E. Fosso-Kankeu, H. Grobler

{"title":"Consideration of Total Station as Baseline for Tape Measurements Improvement in Holing Prediction at Underground Deep Level Gold Mine","authors":"G. Khoza, E. Fosso-Kankeu, H. Grobler","doi":"10.17758/iicbe3.c0322202","DOIUrl":"https://doi.org/10.17758/iicbe3.c0322202","url":null,"abstract":" Abstract — Over the last few years, accurate and safe break-through (holing) has been a problem in Underground deep level gold mines because of factors including the inherent inaccuracy of tape measurements. In this study, data collected from total station measurements and tape measurements in an underground deep level gold mine were compared using statistical analysis, then recommendations were made based on error margin. Tape surveying methods and recording of distance require human involvement at various stages of the process compared to total station measuring. It is therefore likely that the former method will be more prone to error. The margin between these two methods has never been evaluated in the context of ultra-deep level gold mining activities. The study tested the accuracy of tapes versus the accuracy of Total station using a hypothesis test, F test. It was found that tape measurements are less accurate from Total station measurements when applied for holing prediction in ultra-deep level gold mine. It is recommended that for high accuracy work the Total station should be used to measure underground stopes faces on a deep level gold","PeriodicalId":426472,"journal":{"name":"JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130981231","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: 0

Potential of Alkaline Gold Mine Tailings to Treat and Prevent AMD Formation: A Case of an Acidic Gold Mine of Sabie-Pilgrim’s Rest Goldfields in South Africa 碱性金矿尾矿治疗和预防黄斑变性的潜力——以南非Sabie-Pilgrim 's Rest金矿酸性金矿为例

JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa) Pub Date : 2022-03-17 DOI: 10.17758/iicbe3.c0322265

Naythan van Wyk, E. Fosso-Kankeu, A. Eloka‐Eboka

{"title":"Potential of Alkaline Gold Mine Tailings to Treat and Prevent AMD Formation: A Case of an Acidic Gold Mine of Sabie-Pilgrim’s Rest Goldfields in South Africa","authors":"Naythan van Wyk, E. Fosso-Kankeu, A. Eloka‐Eboka","doi":"10.17758/iicbe3.c0322265","DOIUrl":"https://doi.org/10.17758/iicbe3.c0322265","url":null,"abstract":" Abstract — Acid mine drainage (AMD) pollutes vast quantities of surface water and underground water supplies. AMD is considered to be the second-largest threat to sustainable life after global warming. South Africa is a water-scarce country in a water-scarce continent (Africa). It is of the utmost importance to prevent and treat AMD to preserve water resources and protect all forms of life, primarily aquatic life. The South African government has recently postponed its R10 billion long-term AMD treatment plan, which involves treating AMD polluted water in order to produce potable water or industrial water using desalination. There is a need to develop environmentally sustainable AMD prevention and treatment techniques. The use of by-products or waste from industries as a remediation technique for AMD has received much attention in the last few years, particularly from wastes produced by steel and paper mills. In this study, the acid-generating capabilities of alkaline gold mine tailings, acidic gold mine tailings and a mixture of 3:1 and 1:1 (acidic gold mine tails to alkaline gold mine tailings) were evaluated using static tests, which includes Acid-Base Accounting (ABA) and Net Acid Generation (NAG) tests. The results show that using alkaline gold mine tailings as a pH neutralising cover material to mitigate AMD formation generated by the acidic gold mine tailings located in Sabie-Pilgrim’s rest Goldfields, South Africa seems to be an environmentally sustainable option that can be further","PeriodicalId":426472,"journal":{"name":"JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115657195","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: 0

On-farm Assessment of Cover Crop Management Effects on Plant Tissue Nutrients and Soil pH in the Western Cape Province 西开普省覆盖作物管理对植物组织养分和土壤pH值影响的田间评价

JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa) Pub Date : 2022-03-17 DOI: 10.17758/iicbe3.c0322260

Adewole T Adetunji, B. Ncube, Reckson A. Mulidzi, F. Lewu

{"title":"On-farm Assessment of Cover Crop Management Effects on Plant Tissue Nutrients and Soil pH in the Western Cape Province","authors":"Adewole T Adetunji, B. Ncube, Reckson A. Mulidzi, F. Lewu","doi":"10.17758/iicbe3.c0322260","DOIUrl":"https://doi.org/10.17758/iicbe3.c0322260","url":null,"abstract":" Abstract — The choice of cover crop (CC) species and their growth termination stage is crucial to optimize their benefits. Field experiments were carried out at two sites (Nietvoorbij and Bien donne) in the Western Cape, from 2017 to 2018. This study examined the: (i) Effect of two termination stages (vegetative and flowering) on the chemical composition (C, N and C:N) of four CCs (oats, rye, pea, vetch) and (ii) Short-term impacts of living CCs and residues on soil pH. The experiment was conducted in a randomized block design with three replicates. Plants were sampled at kill while soil was sampled at kill and one year after. Delaying termination from vegetative till flowering increased the total C and C:N ratios of vetch, pea, oats and rye, respectively, while their tissue N decreased, at both sites. CC presence also decreased soil pH at both sites. Results of this study showed that CC tissue and soil C, N, C:N ratios may be manipulated through appropriate species selection and termination stage. However, longer-term studies are needed to evaluate the long-term effects of CC species on soil pH which have the potential to affect microbial activities and nutrient release","PeriodicalId":426472,"journal":{"name":"JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa)","volume":"24 24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120854902","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: 0

Soil Chemical and Enzyme Activity after Irrigation with Diluted Winery Wastewater in the Vineyard at Stellenbosch, Western Cape Province 西开普省Stellenbosch葡萄园用稀释的酒厂废水灌溉后的土壤化学和酶活性

JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa) Pub Date : 2022-03-17 DOI: 10.17758/iicbe3.c0322254

Takalani Sikhau, Adewole T Adetunji, C. Howell, Reckson A. Mulidzi, Francis Bayo, Lewu

引用次数: 0

Waste Management Practices in the Theewaterskloof Municipality, Grabouw, Western Cape 西开普省格拉博市Theewaterskloof市的废物管理实践

JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa) Pub Date : 2022-03-17 DOI: 10.17758/iicbe3.c0322235

Aseza Mpokopi, E. F. Itoba-Tombo, Brian Delcarme

{"title":"Waste Management Practices in the Theewaterskloof Municipality, Grabouw, Western Cape","authors":"Aseza Mpokopi, E. F. Itoba-Tombo, Brian Delcarme","doi":"10.17758/iicbe3.c0322235","DOIUrl":"https://doi.org/10.17758/iicbe3.c0322235","url":null,"abstract":" Abstract — Waste management is one of the challenges facing municipalities over the world, in Africa and in some parts of South Africa. The study evaluated waste management practices in Grabouw, Theewaterskloof Municipality. A waste management practices survey (using questionnaires and interviews) was carried out in Grabouw for the duration of 8-months. Four (4) residential areas were selected in Grabouw for undertaking the study. The selected residential areas were Rooidaka, Smarty Town, Zola and Marikana. These residential areas were selected based on the initial visit to Grabouw, where piles of waste on the streets and within the river systems were observed. Additionally, certain organizations were randomly selected based on their involvement in waste management. The selected organizations were Community Development Workers (CDW), Community Workers Programme (CWP), Theewaterskloof Municipality (TwK), and the Community Members (CM). The study used both qualitative and quantitative methods. The study revealed that waste management practices in the study area are misunderstood, inefficient and fragmented. Furthermore, the study showed that community members were not involved in waste management planning, waste receptacles allocated to households were too small and only two trucks were servicing the Theewaterskloof Municipality for waste collection. The waste management practices applied within Grabouw were limited to collection, transportation and disposal. The major issues that affected waste management practices in Grabouw, Theewaterskloof included organizational structure, insufficient waste management investment i.e. financial and human resources, lack of waste management planning, education and awareness that included uncoordinated political interference on the application of waste management practices. The study discussed and provided waste management practices applied globally, in Africa, and in other parts of South Africa as well as within the study area, which","PeriodicalId":426472,"journal":{"name":"JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134534743","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: 0

Economic Effectiveness of Feeding Pomegranate (Punica granatum L.) Peel Powder Supplemented Diets to Broiler Birds 投喂石榴的经济效益果皮粉在肉仔鸡饲粮中的添加

JCBEE-22 Mar. 17-18, 2022 Johannesburg (South Africa) Pub Date : 2022-03-17 DOI: 10.17758/iicbe3.c0322206

E. A. Akuru, C. Oyeagu, T. Mpendulo, K. Mopipi, Adetunji Adewole Tomiwa, F. Lewu

引用次数: 0