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Optimization of toe in bench Blasting – A practical view
| Content Provider | Scilit |
|---|---|
| Author | Navalkar, C. B. |
| Copyright Year | 2018 |
| Description | Success of a Blast design in bench Blasting is judged by various factors of which the main is left-over of toe after completion of mucking operation. Formation of toe in Blasted benches reduces the efficiency of mucking/excavation machinery and thereby also affects adversely on the total productivity of the mine. There are various factors that are responsible for the formation of toe. The main unavoidable element is the Geology of the area whereas the avoidable factor is basically Blast DESIGN which would include bench geometry, diameter & depth of drill hole, pattern of charging, initiation system etc. These factors/elements can be improved upon to achieve practically a toe-less Blast. Though this paper has summed up some of the practical data collected from the field, the inference can be more or less generalized for the optimization of toe in bench Blasting operations as a whole. The concept of Blasting the rock using explosives is to convert the solid rock mass into smaller fragments so that it can be loaded by the excavators. Formation of toe in Blasted benches reduces the efficiency of mucking/excavation machinery and thereby also affects adversely on the total productivity of the mine. This chapter discusses some of the practical data collected from the field and describes the optimization of toe in bench blasting operations as a whole. It analyzes a number of Blasts and the factors that are responsible for the formation of toe on blasted benches. Factors which influence on toe formation during blasting operation can be categorized into two types viz, avoidable types and unavoidable types. Avoidable types include bench geometry, diameter of blast hole, and size of drill block, condition of blast holes, preblasting condition of the face, charging pattern, sub-grade drilling and initiation systems. Unavoidable types include geology of the area controlling strata variance and watery condition. Book Name: Mine Planning and Equipment Selection 2000 |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2004-0-28217-4&isbn=9780203747124&doi=10.1201/9780203747124-18&format=pdf |
| DOI | 10.1201/9780203747124-18 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2018-05-08 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Mine Planning and Equipment Selection 2000 Mining and Mineral Processing Bench Blasting Toe in Blasted Formation of Toe Optimization of Toe in Bench |
| Content Type | Text |
| Resource Type | Chapter |
