Hi Mining Publication: Jet Fan Ventilation in Very Deep Cuts - A Preliminary Analysis.

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Hi Abstract;

January 1992

Future coal mining systems will be able to cut from crosscut to crosscut where advances could exceed 100 ft. However, limitations arise when ventilating such mining systems. In deep advance mining, there would be no workers at the face to advance ventilation tubing or curtain manually. Traditional methods also provide no means for maintaining face ventilation after the miner backs away from the face. U.S. Bureau of Mines research is studying means to provide effective ventilation at cut depths beyond the current limit of 40 ft. Several innovative ventilation schemes are currently being considered. One such method is the use of a jet fan to ventilate a deep cut. A jet fan is simply a freestanding fan using little or no ducting to direct the ventilation flow. Jet fan testing in a 90-ft entry revealed that higher exit velocities and greater penetration depth occurred when various configurations were used to confine and direct the air flow. Additional testing also indicated that 2,200 cfm of fresh air was delivered to the face 90 ft distant when a check curtain was used to limit entrapment around the fan. Without this curtain, this quantity dropped to only 1,000 cfm. This testing indicated that a jet fan was capable of providing ventilation to a distant face area. It also highlighted potential problems, such as re-circulation at the fan and entrapment in the jet flow. Despite these potential problems, jet fans may be adequate for ventilating cuts exceeding 40 ft.

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Hi Publication;

Jet Fan Ventilation in Very Deep Cuts - A Preliminary Analysis.

Hi View & Download Mine Ventilation Synopsis Papers, Section A.

1. Ventilation planning for metal/non-metal mines:

A protocol and standard for mine ventilation studies, D. J. Brake. Click .PDF Link Here.

Implementing a tracking and ventilation control system at Barrick Goldstrike’s underground division, M.A. Meyer. Click .PDF Link Here.

Analyzing ventilation requirements and the utilization efficiency of the Kidd Creek mine ventilation system, S. Hardcastle, C. Kocsis, G. Li & K. Hortin. Click .PDF Link Here.

Technology convergence for sustainable underground mine ventilation system control, A.M. Tonnos & C. Allen. Click .PDF Link Here.

Ventilation on demand (VOD) auxiliary fan project – Vale Inco Limited, Creighton Mine, D. F. O’Connor. Click .PDF Link Here.

Ventilation on demand (VOD) project – Vale Inco Ltd. Coleman Mine, C. Allen & B. Keen. Click .PDF Link Here.

Case study – ventilation planning for Bog Zone, Lisheen Mine, K. Hopperstead. Click .PDF Link Here.

Extension of the main ventilation system at LKABs Kiruna Mine for the new main haulage level 1365 m, L. Mukka & C. Blomgren. Click .PDF Link Here.

A study of radon regulation and pathology as it relates to underground hardrock mining, D. M. Loring. Click .PDF Link Here.

Ventilation requirements for uranium mines, C. Gherghel & E. De Souza. Click .PDF Link Here.

Old Mines – New Regulations: The re-opening of the Gordonsville, Elmwood, and Cumberland Mines under new DPM regulations , A. Adu-Acheampong, S. Patton & J. Dawson & K. Huffman. Click .PDF Link Here.

Upcoming Sections include; (3) Ventilation Planning For Coal Mines, (4) Spontaneous Combustion, (5) Heat & Humidity, (6) Miners act & Mine seals, (7) Numerical Modeling, (8) Coal Mine Methane, (9) Mine Dust, (10) Mine Fans, (11) Diesel Emissions Control, (12) Mine Fires, (13) General Ventilation Design & Monitoring, (14) Other.

2. Tunnel Ventilation:

Fires in vehicular tunnels, I.J. Duckworth. Click .PDF Link Here.

Ventilation and atmosphere control inside a 3-bar compressed air TBM heading, B.R. Zernich & M.A. Krulc. Click .PDF Link Here.

Ventilation of the Northern Mujsky Railway Tunnel, S.G. Gendler. Click .PDF Link Here.

The application of vertically-mounted jet fans in ventilation shafts for a rail overbuild, R.E. Ray. Click .PDF Link Here.