Cut and Cover (Bottom Up and Top Down) and Box Pushing Technique will be analyzed. Underground excavation methods. Long-hole stoping and removing ore after blasting. Surface and underground excavations: methods, techniques & equipment. This newly balanced text will continue to equip the student and the professional with a thorough understanding of the principles and processes of mine wastes. Before drilling starts a good drilling site has to be selected, where experience suggests that there will be an adequate quantity of good quality groundwater. 2014.11.10. 3.2.1 MINING OR TUNNELING TECHNIQUES 9) is used where the ore is weak, and the walls are not, The value of the ore must be relatively high, f, In square-set stoping, one small block of ore is remov, The timber sets interlock and are filled with brok, The waste rock or sand fill is usually added after, Square-set timbers are set into place as support and ar, Although it is very selective and allows for, -hole stoping can cater for varying ore thicknesses and dips (0 -, Applied to loner (~100 m) and longer diameter bla. Join ResearchGate to find the people and research you need to help your work. the investigation and design stage , construction dewatering is rarely a problem. Tunnel construction is a subset of underground construction. problem because they cannot be easily transported? Ore extraction and underground development is achieved by precise drilling, During the development and exploitation stages, are extracted from the earth, remarkably similar unit operations are normally, the deposit, and the auxiliary operations that are used, The production cycle employs unit operations that are normally grouped into rock, breakage and materials handling. G eotechnologies and related science and engineering fields make it possible to use underground space to support livable, resilient, and sustainable cities. Underground Mining Methods Flow Chart (modified from Brown. Classification of Underground Mining Methods Mineral production in which all extracting operations are conducted beneath the ground surface is termed underground mining. Block caving geomechanics. and resemble a low-profile front end loader, receive primary crushing via jaw or cone crusher. Through improved methods of design and construction, the dimensions of underground workings have increased, and the modern underground worker can count on much greater safety and much better working conditions than an historical counterpart. Basically, if you find that building underground is out of your budget, then you could take an old silo and place it in the ground to form a nice underground home for less money. The stope is left for the fill to consolidate. (2005). Longwall and caving methods are distinguished from other mining methods by the fact that the near-field rock undergoes large displacements so that mined voids become self-filling. In contrast, a number of different systems, materials, and construction methods have been used during the last century in order to achieve the necessary insulation and heat dissipation required for undergrounding transmission lines. via chutes obviating manual loading, traditionally the most common and least lik, predetermined pattern as designed by a Mining Engineer, blasting phase it cannot be accessed by personnel. Tunnel Construction Methods Introduction. The international caving JKMRC monograph series in mining In increasing order of magnitude of, 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 evolution of the method Condition deposit Principles of the method Methodology of block caving Basic issues of geomechanical to the black caving method: Caveability Mine design Fragmentation and extraction, Practical importance of the Room and pillars method Different applications of the R & P method R & P in hard rocks: Conditions of deposit for application of R & P in hard rock R & P equipment in hard-rock R & P in soft rocks: Conditions of deposit for application of R & P in soft rock: Characteristics of R & P method in non-coal applications R & P classic Step mining Post-pillar mining, Shrinkage stoping Ascending method of mining Advantages and Disadvantages Vertical Crater Retreat stoping Introduction Application Developmental sequence of stopes Production How Cratering Works. Mining can be done by the following methods: seam, after which the coal is gathered and loaded ont, will break easily when blasted with explosives, Coal Skimming (or Sink and Float) method. 1. Many different g, These holes are fired first, with enough firing time to allow, Typical Diagram for a Open Gripper Main Beam TBM, are something like 10% as efficient as TBM, However, digger shield machines too often met with poor. To create an underground passage that passes through the hill, under buildings or roads, underwater or under entire cities Tunnels are required. Breakage generally consists of drilling and blasting and, materials handling encompasses loading or excav. All figure content in this area was uploaded by Hassan Z. Harraz, All content in this area was uploaded by Hassan Z. Harraz on May 04, 2016. and dip, and the competency of the surrounding rock. These pieces of equipment may operate using diesel or electric engines, In some cases the underground primary crusher feeds an inclined. Check out this underground house. Future trends in underground construction Environmental and economic factors Improvement of surface environment. All rights reserved. The considerably updated third edition has novel and notable changes including: revision of text to reflect major developments and contemporary issues that are taking place in the field of mine waste science; new web pages at the end of each chapter; over 20 case studies and scientific issues; over 150 figures and tables; and an updated bibliography with over 1200 references. Tempe/North Bay: McIntosh Engineering. Hard Rock Miner's Handbook. removal of materials from all underground excavations. Almost the entire process can be automated. Underground Drilling and Loading Handbook. ResearchGate has not been able to resolve any references for this publication. Underground construction Techniques civil final year seminar more advanced topics in the field of civil engineering with lot of further scope Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Underground Drilling and Loading Handbook. The strong pedagogical framework is supported by case studies from around the world, presentation of crucial aspects of mine wastes as scientific issues; end-of-chapter summaries as well as lists of resource materials and www sites for each waste type. The method has a low explosive consumption. © 2008-2020 ResearchGate GmbH. Access scientific knowledge from anywhere. Finland: Tamrock Corp. Puhakka, T. (1997). Figure 3-1 provides an overview of the construction methods that would be used for the Preferred Alternative. The company specializes in power, communications, airport f… Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Discover the world's research. Standard construction methods would be used for traffic, noise, vibrations and dust control, consistent with all applicable laws. ResearchGate has not been able to resolve any citations for this publication. Michael S Schultz . They are usually of circular or horseshoe cross-section. © Springer-Verlag Berlin Heidelberg 2010. country rock displacement, and in decreasing order of strain energy stored in the near-field rock, the basic mining methods to be considered in the present category are longwall mining in hard rock, longwall coal mining, sublevel caving and block caving.