Abstract The aim of this project was to provide the Australian underground coal mining industry with an up to date, state of the art summary of the Longwall Top Coal Caving (LTCC) mining system and its potential for application in Australia.

A brief description of longwall top coal caving (LTCC) is included at the end of the Longwall section of the Fundamentals of Coal Mining module of this web site. Despite the fact that there are numerous coal seams in Australia which are thick enough for LTCC to be used to increase recoveries, potentially at a reduced cost/tonne, there has been ...

Longwall Top Coal Caving (LTCC) technology Yancoal introduced the Longwall Top Coal Caving (LTCC) mining technology to Australia at its Austar mine in 2006. Developed in China, top coal caving uses a modified long wall mining system.

The mine's coal reserve amounts to approx. 200 million tonnes. Starting at the end of 2017, a seam with a thickness of approx. 20m will be mined using Top-Coal Caving and the longwall method. Approx. 5 million tons of coal per year will be mined here. The longwall operations are fully mechanized, and the drifts are advanced using road headers.

2Zhangji Coal Mine, Xuzhou Mining Bureau, Xuzhou 221147, Jiangsu Province, P.R of China ABSTRACT Longwall top-coal caving technology has developed rapidly in China, in recent years. The application of longwall top-coal caving can double both the productivity and the efficiency of a working face and reduce the cost of production by 30 to 40o/o.

Longwall top coal caving mining is one of the main methods of mining thick coal seams in China. Therefore, carrying out the classification evaluation of top coal caving is of great significance to ensure mining success and reduce the risk of mining technology. In order to realize the classification evaluation of top coal caving, this article introduces the method of using …

Geological and geotechnical aspects of underground coal mining methods within Australia. Download. Related Papers. STUDY AND REVIEW OF ADVANCE DEPILLARING METHODS USED IN CONTINUOUS MINER PANELS IN UNDERGROUND MINES. By Harshal Tagade. An innovative initiative to design a feasible mining method in the deepest coal mine of India.

LONGWALL TOP COAL CAVING DESCRIPTION . Longwall Top Coal Caving (LTCC) is an enhanced form of the conventional longwall recovery system, whereby a rear Armoured Face Conveyor (AFC) (refer to Figure 3) is utilised to extract coal from behind the powered supports that would otherwise be left unrecovered in thick seam environments. The major

Exploration is being realized via two parallel inclined rock headings. The total coverage is 400-600m at a depth of approx. 150m. The mine has a coal reserve of approx. 36 million tons and seam thicknesses between 12m and 30m. The Longwall Method with Top Coal Caving is being used for excavation and the mine produces in up to 3 levels.

Join us for the 20th Anniversary Australian Longwall Mining Conference in 2022 for a return to the Nation's only gathering for elite underground coal miners. Longwall 2022 will aim for a return to the face-to-face networking and shared learning that has come to define the event – alongside in-depth case studies, learnings through the COVID ...

Analytical Study on the Stability of Longwall Top Coal Caving Face (Tien Dung Le)....Pages 308-319 ... Table 1 shows different types of rock mass classification systems and the purpose of application development with respective factors. A karst classification for engineering is suited for foundation design. While cone and tower karst ...

This app has been developed for the students of Minerals and Energy Resources Engineering (MERE) subjects at the University of New South Wales (UNSW), Australia. It is intended to provide an introduction to the longwall top coal caving (LTCC) mining method through an interactive simulation.

This representation techniques can also be seen in Li et al. (2018) and Zhang et al. (2019), in which FLAC3D was used to investigate rockburst and …

Longwall Top Coal Caving (LTCC) is an improved longwall mining technique that has shown many advantages compared with other methods in terms of coal recovery rate, face equipment design, development cost and spontaneous combustion control for extracting coal seam with thickness in excess of 4.5 m (Hebblewhite et al. 2002).

Oraee-Mirzamani B, Zandi S, Oraee K, 2014, Evaluation of Top Coal Yielding Potential in Longwall All Top Coal Caving Mining, 22nd MPES Conference, Publisher: Springer International Publishing, Pages: 143-149 Longwall Top Coal Caving (LTCC) is a method of extraction for underground mining of thick coal seams.

Application of longwall top coal caving to Australian. 15/2/2004· The aim of this project was to provide the Australian underground coal mining industry with an up to date, state of the art summary of the Longwall Top Coal Caving (LTCC) mining system and its potential for application in Australia.The aim of this project was to provide the Australian underground …

longwall recovery system called Longwall Top Coal Ca ving (LTCC) to the Australian coal mining industry in 2006. The LTCC technology has since been utilised to extract the Stage 1 panels known as A1 and A2 and in 2009 commenced in the Stage 2 panel A3. Current LTCC operations are in the A4 panel with

Yasitli N, Unver B (2005) 3D numerical modeling of longwall mining with top-coal caving. Int J Rock Mech Min 42:219–235. Article Google Scholar Yu B, Zhao J, Kuang T, Meng X (2015) In situ investigations into overburden failures of a super-thick coal seam for longwall top coal caving. Int J Rock Mech Min 78:155–162

The application of PFC to simulate longwall top coal caving Zhengyang Song, Heinz Konietzky, & Martin Herbst (PFC3D, Germany) Application of PFC in earthquake modelling and seismic hazard assessment of an underground nuclear waste repository Jeoung Seok Yoon, Arno Zang, Ove Stephansson, Carl-Henrik Pettersson & Flavio Lanaro (PFC3D, Germany)

Longwall mining systems are capable of producing significant outputs from a single longwall face – 8 million tones per annum or more. When operating correctly the coal is mined in a systematic, relatively continuous and repetitive process which is ideal for strata control and for associated mining operations

supplying special shields for the longwall top coal caving method (LTCC), where extremely thick seams are being mined. This method utilizes a second AFC behind the shields to take the coal on top of the longwall outside of the face. Several such systems have been supplied and successfully installed in Australia at the

Longwall top coal caving (LTCC) is a special type of longwall mining applicable to very thick seams (greater than 4.5m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining height.

Castleman Hall Mining Safety of Longwall Top-coal Caving in China 9:00 a.m. - 10:15 a.m. Jian Wu and Yueping Qin, China University of Mining Technology, Beijing, and Minghua Zhai, Zhangi Coal Symposium Chairman: Jerry C. Tien, UMR Mine, Xuzhou, China.

This creates an effective cave line at an angle to the coal face, that helps reduce the goaf pressure on the face end, thereby increasing the stability of the main gate roof support. A longwall mining system includes at least one face end roof support having a longitudinal length, and at least one near end roof support adjacent the face end ...

The aim of this project was to provide the Australian underground coal mining industry with an up to date, state of the art summary of the Longwall Top Coal Caving (LTCC) mining system and its potential for application in Australia. In supporting the project, ACARP requested that the project focus on "summarising the status of the LTCC system ...

Gradual instability of coal pillars left behind underground with room mining is one of the main reasons for sudden roof caving in the gob, surface subsidence, and other significant hazards.

105 papers have been selected for this symposium, entitled the 5th International Itasca Symposium on Applied Numerical Modeling, held on February 18-20, 2020 in Vienna, Austria. The papers are organized in areas of engineering applications including mining, underground construction, slope stability, hydraulic fracturing, nuclear waste disposal ...

For thick coal seams, application of the traditional longwall method can lead to a significant coal loss, which not only can influence the production efficiency, but also may increase the spontaneous combustion risk in longwall operations. Longwall Top Coal Caving (LTCC) is a modified longwall mining method for efficient extraction of the thick ...

and Balusu R. (2012) Geotechnical Studies for Introducing High Capacity Longwalls and Longwall Top Coal Caving Mining in SCCL, 4th Coal Summit,18-19 September 2012, New Delhi, csiro:EP126830. Adhikary, D.P . and Guo, H. (2011) Modelling of mine gas emissions.

Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 0.6–1.0 m (2 ft 0 in–3 ft 3 in) thick). The longwall panel (the block of coal that is being mined) is typically 3–4 km (1.9–2.5 mi) long and 250–400 m (820–1,310 ft) wide.

A surface mining system for removing material from a mining face generally includes a conveyor extending substantially parallel to the mining face, a miner supported by and moveable along the conveyor, and a conveyor translation device associated with the conveyor and operable to move the conveyor and the miner toward the mining face. A method for advancing a surface mining …

China Underground Mining Equipment Industry Latest Edition 2020. Impact of COVID-19 Outbreak on China Underground Mining Equipment Market. Quantitative analysis of the current & future market outlook 2017-2030. Goldstein Market Intelligence latest report covers the market opportunity, dynamic trends, challenges to industry growth and recovery strategy of …