Underground Block Cave Mining Method

BLOCK CAVING METHOD.pptx

IV. DEFINITION / PROCESS The one underground mining method that has the potential to rival surface mining in output and cost is block caving. Block Caving is the mining method in which masses, panels, or blocks of ore are undercut to induce caving, permitting the broken ore to be drawn off below. If the deposit is overlain by capping or bounded by a hanging wall, it …

Block Caving: A Viable Alternative?

Block cave mining is an underground mass mining method that allows for the bulk extraction of large, relatively lower grade, ore deposits with substantial vertical dimension. In block caving, a large section of ore is initially undercut by drilling and blasting, creating a large unsupported roof that will start to collapse under its own weight ...

(PDF) UNDERGROUND MINING METHODS

There are several methods for bulk underground mining, the most common being block caving, long hole open stoping, sublevel open stoping, sublevel caving and vertical-crater-retreat. 2.2.1 Block Caving Block caving is a large-scale production technique applicable to homogeneous ore bodies of large dimensions and most commonly steep to vertical ...

Underground Definitive Feasibility Study demonstrates …

An underground concept study and a mining options study was commissioned in 2018 to evaluate the potential for underground mining at Savage Rivers North Pit. This suggested that underground mining by Block Cave (BC) or Sub Level Cave (SLC) methods could be a viable and economically attractive alternative to increasing the depth of the North Pit.

About

New Afton Mine is a block caving operation, located approximately 10 kilometres outside of Kamloops and 350 kilometres northeast of Vancouver in British Columbia. ... New Afton uses an underground mass mining method …

Prediction method of surface subsidence induced by block caving method

As the largest mine with block caving method in China, Pulang Copper Mine in the north-east of Shangri-La County, Yunnan Province, China, has serious surface subsidence problems, with the largest ...

Underground Mining: Caving Methods

Caving mining methods that are based on a planned caving of rock above and/or at times surrounding the material being mined can be classified in three broad categories: longwall mining, sublevel caving, and block caving. Each of the three methods involves a distinct technology as well as art of operation. Each requires a relatively large, regular, and …

Block Caving

Block caving is a gravity-based underground mining method that involves breaking up the rock mass located at depth into pieces. This method is particularly suitable for low-grade minerals …

Trona underground mining techniques | bore hole, block caving methods

Trona Mining includes Underground Mining such as block caving, bore hole mining. Great mining is mainly considered by mining companies product equipments like as Aluminum, copper, gold, mercury, etc. ... literally means extraction.Our Mother Earth has lots of resources deep within her and mining is the method of extracting all these valuable ...

Square set stoping | PPT

Square-set stoping is an underground mining method that relies on timber frames called "sets" for ground support. ... 20,400 Block Caving Cu historic shafts Closed for many years. Phelps Dodge Safford USA (AZ) Block Caving Cu historic shafts Mine built, but ore would not cave properly (blocky). Phelps Dodge Climax USA (CO) 36,000 Block Caving ...

Block caving

Block cave mining is the only underground method that can offer comparable open pit production rates and operating costs. For new developments, block cave mining offers the further advantage of a smaller surface footprint with …

Chuquicamata underground mine design: the …

Figure 1 Chuquicamata underground mine original configuration Aiming to allow operational and planning independence to the mining areas, and therefore maximising production reliability, the cave mining method decided upon was block caving using macro blocks (Fuentes & …

Underground mining methods | PPT

Caving Methods: Caving methods are those associated with induced, controlled, massive caving of the ore body, the overlying rock, or both, essential to the conduct of mining. (1) Longwall mining: Longwall mining is an exploitation method used in flat-lying, relatively thin, tabular deposits, in which the long faces are established to extract ...

Underground Mine

Block caving is a highly resource-efficient method of underground mining, in which large underground ore blocks are cut from beneath, allowing the ore to collapse under its own weight. After collapsing, ore is drawn through drawpoints and conveyed to a crusher. In DOZ block caving, LHD loaders transfer ore slurry into ore passes leading to chutes.

Block Caving Mining Method: Transformation and Its …

Among underground mining methods, block caving is the most cost-effective as it can produce 10,000–100,000 tons per day with a relative operating cost of USD 1 to 2.5 per ton [6,7]. In the last twenty years, existing block caving mines have varying ore body thickness ranges from 200 to 800 m.

Inside block caving: the deep mining method of …

Block caving is a mining system which involves undermining an ore body and then allowing it to collapse under its own weight, a process that opens access to deeper deposits.

Grasberg Block Cave Underground Mine

Mining and ore processing for the Grasberg Block Cave mine. Underground block caving method, involving undercut and drawbell blasting, is employed for ore extraction at the Grasberg Block Cave mine. The extracted …

Prediction method of surface subsidence induced by block …

As the largest mine with block caving method in China, Pulang Copper Mine in the north-east of Shangri-La County, Yunnan Province, China, has serious surface subsidence …

Longwall; Sublevel Caving and Block Caving Underground mining methods

Longwall Longwall in coal Longwall in Hard Rock Sublevel Caving Characteristics of the ore body and mining method Development Production Equipments Used Block Caving Introduction Historical ...

The design & operating philosophies of panel vs block …

Block caving is a mining method where the mine footprint is completely undercut prior to ramping up the draw tonnage to propagate the cave and achieve steady state production. Ideally, the footprint is ... Caving is arguably the safest underground mining method, with the greatest hazards often occurring as a

Understanding Underground Mining Methods

Methods used in underground mining are generally classified based on the type of deposit being mined and the type of ground conditions at the site. The three main types of underground mining are room-and-pillar, cut-and-fill, and block caving. The process of underground mining is aimed at ensuring safety, economic viability, and minimal waste.

Major Mines & Projects | Grasberg Complex

The Grasberg minerals district includes the following underground mines that are being operated: the Grasberg Block Cave, the Deep Mill Level Zone (DMLZ) and Big Gossan. Long-term mine development activities are ongoing for PT-FI's Kucing Liar deposit in the Grasberg minerals district, which is expected to produce over 7 billion pounds of ...

Metode Penambangan BawahTanah Underground …

Harries, N J, 2001. Rock mass characterisationfor cave mine engineering. PhD thesis, University of Queensland, Brisbane. Mawdesley, C, 2002. Predicting rock mass cavability in block caving mines. PhD thesis, University of Queensland, Brisbane. Wattimena, R K, 2003. Designing undercut and production level drifts in block caving mines .

Week 7 Geology Questions Flashcards

Open pit mines create much more _____ than underground mines Question 8 options: A) Pollution B) Waste ... Block Cave Mining is a large scale mining method suitable for ... Cut and Fill Mining Methods Question 4 options: A) Involve the presence of workers within the orebody being mined B) are suitable for sub-horizontal orebodies of limited ...

An overview of block caving operation and available …

In this paper, first, production scheduling methods for underground mining are reviewed and then, block caving method is described. Afterwards, available mathematical models of block …

Chuquicamata Underground Mine

Hatch undertook the Chuquicamata underground mine feasibility study and basic engineering to transition the open-pit mine to a large underground mine. Who We Are + What We Do + Insights + Solutions + Careers. Chuquicamata Underground Mine ... Block-caving. underground method. 140,000 tpd. ore production. 97%.

Mining Methods: Block Caving | Geology for …

Block (gravity) caving is a bulk underground mining method, which allows large low-grade deposits to be mined underground. This method involves undermining the orebody to make it collapse under its own weight …

[PDF] Cave mining

Caving is the lowest-cost underground mining method, provided that the drawpoint spacing, drawpoint size, and ore-handling facilities are designed to suit the caved material, and that the drawpoint horizon can be …

Major Mines & Projects | Oyu Tolgoi Mine

Oyu Tolgoi Mine Open Pit & Underground Mine is located 540 km S from Ulaanbaatar, Mongolia. Data Access; Keep me signed in. ... The Hugo North deposit is currently being developed as an underground mine using the block caving mining method. A staged approach is envisaged for developing the Hugo North deposit, involving mining two block …

Underground metal mining methods | PPT

Underground metal mining methods - Download as a PDF or view online for free ... Caved stope methods include sublevel caving and block caving. Parameters to consider when choosing a stoping method include geo-mechanical conditions, ore reserves and grades, costs, productivity, and available equipment. Read less. Read more.