sub level stopping mining method ppt

(PDF) Sublevel Stoping Underground Mining

Sublevel Stoping Underground Mining Methods Authors: Hassan Z. Harraz Tanta University Abstract Considerations on the Sublevel stoping is one of the most common and large-scale mining methods, which can be implemented in steeply dipping orebodies by creating open Production scheduling optimisation for sublevel stoping

Evaluation of the use of sublevel open stoping in the mining

Table 11 shows the comparison of conventional cut-and-fill methods (including the drift-and-fill mining system practiced at the case study mine) with sublevel The short-hole shrinkage or sublevel chamber-mining methods are usually adopted for mining orebodies with a 30–50˚ incline and less than 10 m in vertical thickness [6–8]. Research on sublevel open stoping recovery processes

Research on sublevel open stoping recovery processes of

DLSOS mining method which is different from caving mining method (sublevel caving or block caving), belongs to open stope mining method. Its mining sequence is from bottom 1. Introduction. Long-term planning of an underground mine involves three main aspects: mine design, production scheduling, and equipment selection (Musingwini, A fast method to develop an optimal operational sublevel

sub level stopping mining method ppt. extraction of thick coal seam ethesis. 3shows the method of mining a 6.6 m thick coal seam by sub level caving.“The final stage of problemSublevel stoping creates large underground openings called "Stopes" whose level of stability is influenced by several factors, including rock mass geometrical parameters, natural and...(PDF) Geotechnical Design for Sublevel Open

Production scheduling optimisation for sublevel stoping

Among underground mining methods, sublevel stoping are a commonly used method in large-scale mining. It is a versatile and productive method that is primarily used for steeply deeping orebodies with regular shape, defined ore boundaries and competent ore and host rock. Dynamic programming applied to grade control in sub Sublevel caving. Sublevel Caving is one of the most advanced mining methods. This method is usually undertaken when mining the orebody through an open pit is no longer economically viable. In Sublevel caving QueensMineDesignWiki

Draw Control Strategy for DiVA

The sublevel caving (SLC) mining method has evolved over the last 100 years. The method was first used in the early 1900s in soft iron ore mines in Minnesota and Michigan, USA (Hartman and Mutmansky, 2002) . It represented an evolution from top slicing, but was initially highly labour intensive and required heavy timber supportSublevel open stopping assignment. 1. Sublevel open stopping Virendra suryawanshi 10108EN066. 2. Sublevel open stopping sublevel stoping is a vertical mining method in which a large open stope is create within the vein. This open stope is not meant to be occupied by the miners therefore ,all work of drilling and must be performed from Sublevel open stopping assignment PPT SlideShare

Evaluation of the use of sublevel open stoping in the mining

In the drift-and-fill method (see Fig. 1), the volume of backfills with 20%, 10%, and 0% cement content account for 16.7%, 41.65%, and 41.65% of the total backfill volume, respectively.It is estimated that the total mine fill cost is about 8.93 $/m 3, and from this total amount, 16.5% is the fill cost with 20% cement content.. The 10% and 20% Block Caving Block-caving method is employed generally for steeply dipping ores, and thick sub- horizontal seams of ore. The method has application, for example in sulfide deposits and underground kimberlite (diamond) mining. It is most applicable to :- o A large-scale or bulk mining method that is highly productive, low in Caving Underground Mining Methods (longwall, Sublevel caving

Sublevel Stoping Mining Method SpringerLink

Since the 1970s, the sublevel stoping mining method (Fig. 1) has been an open stope mining method with relatively advanced technology, high mechanization and efficiency, reasonable safety, and low loss for the application of trackless excavating equipment in the underground.Its main features include: (1) The stage height is 40–60 m Lecture 4: Underground Mining. 1. Hassan Z. Harraz hharraz2006@yahoo 2010- 2011 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors. Permission of the Lecture 4: Underground Mining PPT SlideShare

Digging Deeper: The Advantages of Long Hole Open

Long hole open stoping gives you higher production rates. Long-hole open stoping can increase production rates compared to other underground mining methods, as more ore can be extracted in aSublevel stoping is one of the most successful mining methods in respect of higher production, mechanization and safety. The method is a cost-effective and safe mining solution for steeply dipping vein deposits where high-level mechanization can be adopted. Progress of stope development and rate of production drilling are vital aspects A Case Study on Economic Impact Assessment of

Shrinkage and Vertical Crater Retreat Stoping

Shrinkage and Vertical Crater Retreat Stoping. 1. Hassan Z. Harraz hharraz2006@yahoo 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is Kerugian sub level caving: 1. Sukar untuk mengadakan tambang pilih (selective mining), karena tak dapat ditambang bagian demi bagian. 2. Perolehan tambang tidak terlalu tinggi. 3. Dillution sering terjadi sampai 10 % . Bila dillution harus rendahbdtbt.esdm.go

Mining methods PPT SlideShare

Ground support includes 1.8 m split set bolts, wire mesh, 2.4 to 3 m resin rebar bolts and shotcrete. The Deep Post deposit is mined by underhand cut-and-fill and long-hole stoping methods. The stopes are sub level stopping mining method ppt. sublevel open stoping in south african gold mines. Coal mining processing plant in Nigeria This coal mining project is an open pit mine located in Nigeria, announced by mining company Western Goldfields that it has discovered 62,400,000 tonnes of proven reserves of coal deposits worth US$12 billionsublevel open stoping in south african gold mines

(PDF) Underground mining Methods ResearchGate

2) Room (Bor d)-and-Pillar mining (or con tinuous mining) method It is the most common supported pillar method, designe d and used p ri mar i ly f or min in g fl a t lyingboth sides of the stopping drift of the upper sub-level can be maximally recovered during ore machinery and dump truck or self-propelled mine car are used. The mining method is shown in the diagram (Fig. 1). the lode at the level Sublevel Caving Method Without Sill Pillar, Fig. 1 Sublevel caving method without sill pillarSublevel Caving Method Without Sill Pillar Springer

Sub level stoping PPT SlideShare

FIGURA 2. Esquema Sublevel Stoping Underground Mining Methods Sublevel Stoping 5 • Diámetro de taladros: 50 mm (2”) 200mm (7 7/8”). Las longitudes pueden ser hasta 30 m. • Recuperación 60-80% (depende de los muros y losas). • Dilución varía entre 3-10% de material diluyente de la pared colgante y techo.Underhand Stoping Mining Method. The method of underhand stoping in which the ore is drawn to the level above (B, Fig. .1), is called Cornish stoping. It finds application only when it is necessary to mine a lens of good ore below a level and it is not practicable or financially possible to do the necessary development to come up from Types of Underground Mining Method Comparison 911

Stoping an overview ScienceDirect Topics

Mining Geomechanics. Shuren Wang, Chen Cao, in Advances in Rock-Support and Geotechnical Engineering, 2016. 2.4 Engineering Application. A surface mine was underlied mined-out areas by room-and-pillar stoping method. The harmonic mechanical load was acting on the center of the roof surface of the mined-out areas; its vibration frequency is The mine is currently operating at 1150mL using sublevel mining method for copper ore bodies extraction. design practice was changed from two sub-level to a single sub-level. in sublevel(PDF) Design and dimensioning of sublevel stoping for