overhand stoping / animation / stoping methods / metal mining

in this video i've discussed about the STOPING method i.e. OVERHAND STOPING method with interactive animation in metal mine. HOPE THIS VIDEO WILL BE HELPFUL TO YOU!!! credit to our prestigious dignity - Prof. Neeraj Yadav #MININGMAFIA #STOPINGMETHOD #OVERHANDSTOPING terminology of ug metal : https://youtu.be/Omz5_HcB49k raising method in metal mine: - open raising : https://youtu.be/5jzHx94sC_4 - two compartment : https://youtu.be/vtsJrlQY8js - long hole drilling : https://youtu.be/OInJDkLfbtw - alimak raising : https://youtu.be/_8VPY65KhEA - raise borer : https://youtu.be/fOMB5QNlri0 stoping method: - overhand stoping : https://youtu.be/yy6T4n2d8ac - underhand stoping : https://youtu.be/jhFObbzpx2s - breast stoping : https://youtu.be/cdRwfo4QnJ0 - cut and fill stoping : https://youtu.be/dHknqaa6J68 OVERHAND STOPING : the overhand holes used used in exploration of stope then the method is known as overhand stoping. The two levels enclosing an ore block are connected by raises at interval, 60-125m and stopping starts from one direction only. The stopping operation proceeds from lower main level towards the upper main level and ore is extracted in an ascending manner. Horizontal slices are taken parallel with the haulage level. If the ore body has a mild gradient which prevents gravitation of blasted ore, scrapers are used to collect and load it into mine cars. In the method of overhand stoping with stull timbering the preparatory arrangement consists in driving roof haulage drift and raise from lower level to upper level. If the ore body is not steep and nearly 3m in thickness. Overhand stopping is replaced by room and pillar method of stopping. In thick ore body (nearly 3m and above) stopping dipping the overhand method of stopping is usually changed to shrinkage method or sub-level method of stoping. Condition : 1. The thickness is selected is upto 4.5m. 2. The ore body required strong. 3. Both hangwall and footwall should be strong. 4. The inclination of ore body is 40°-90°. STOPE Preparation : 1. Preparation are made for ventilation supply of power, supply of material, addition man power and additional handling of production. 2. The lower level is prepared for ore transport. STOPE Development : 1. The ore body is approached from the shaft, inclines or adits. 2. The ore body is further approached by cross-cuts, set regular interval from shaft and inclines. 3. When cross-cut touch the ore body, the ore body is developed by driving the levels. 4. These levels are inter connected at regular intervals, by raise or winzes. 5. The raise and winzes are connecting the upper and lower level. 6. When the development of two adjacent levels is complete the stopping operation is under taken. STOPE WORKING:- - block of ore divided into two halves - direction of excavation is upward - make heading from lower level to upper level - make benches by performing drilling & blasting - bench height - 1.5 to 2.5m - bench width - bench height - bench length - thickness of ore body - spacing - 1-2m, - burden - 1-2m - no. of holes - 2-5 ADVANTAGES: ADVANTAGE OF GRAVITATION FORCE IS TAKEN IN BLASTING BLASTING EFFICIENCY IS HIGH FACE IS ALWAYS CLEAR & CAN BE COMPLETELY DRESSED. VENTILATION IS GOOD. EASY TRANSPORTATION OF ORE FROM CHUTE. DISADVANTAGES: WORKING IS DIFFICULT AS WE STAND ON LOOSE ROCK DRILLING IS DIFFICULT MUCK FALLS ON BODY OF WORKERS. NOT SUITABLE FOR WEAK ORE BODY SELECTIVE MINING IS NOT POSSIBLE affiliate link:- amazon.in elements of mining tech -vol 1-dj deshmukh : https://amzn.to/2EVrzFH elements of mining tech -vol 2 -dj deshmukh : https://amzn.to/2PZm1Aq elements of mining tech -vol 3-dj deshmukh : https://amzn.to/2EVfVuh flipkart- elements of mining tech -vol 1 -dj deshmukh : http://bit.ly/34YdXnI elements of mining tech -vol 2 -dj deshmukh : http://bit.ly/2PXEVHS VIDEO: title video - Video by KML from Pexels end video - Video by Gam Ol from Pexels SEND YOUR QUERIES ON :- facebook:- https://www.facebook.com/mining_mafia... instagram:- https://instagram.com/mining_mafiayt?i... OVERHAND STOPING, UNDERHAND STOPING, breast stoping, cut & fill stoping, shrinkage stoping, sub level caving, caving method of stoping, top slicing, stoping method, stoping method in metal mine, different types of stoping method, stope preparation, stope development, mining mafia, Mining Mafia, https://youtu.be/yy6T4n2d8ac