Mining Technical

Watch this video on Youtube :https://www.youtube.com/watch?v=sxvRyoEOTEE Regulation 47: Duties & responsiblities of overman The duties of overman basically revolve around three things: 1. Proper working of his district 2. Saftey of his district 3. Discipline in his district For Discipline   For Discipline                                                         For Descipline 1. O/M shall follow the rules given by his superior officials. 2. He shall be responsible for control and charge to the mine parts assigned to him. 3.He shall follow the duties assigned by the manager 4. he shall always keep the tracings of his district on duty, and keep tracings up to date 5. He shall enforce in his district the provisions of the Act, regulations and orders.   6 He shall give directions as may be necessary to ensure compliance with those provisions, and to secure the safety of the district and the safety and pr

* Important fire Indices For Overman exams * 1. Grahm’s Ratio -: CO produced ——————————- O2 consumed Index value:- Less than 0.5% :- Normal More than 0.5% but less than 1% :- Existence of Fire More than 1% but less than 2%:- Fire in advance stage More than 3%:- Active fire 2.Young’s Ratio:- CO2 Produced —————- O2 consumed Index value:- Less than 25:- Normal 25-50:- superficial heating More than 50:- heating 3.Oxides of Carbon Ratio :- CO —— CO2 Index value:- More than 2:- Normal 2- 13Superficial Heating More than 13:- Blazing Fire 4. Willet Ratio :- CO produced % ——————————- Black Damp + combustible Gas Index value :- Ratio increases with increase in temperature 5. Justin & Kim’s Ratio(Hydro Carbon Ratio) : {1.01(THC)-CH4}1000 ———————————- THC+C { THC= Total Hydro Carbon in ppm,CH4 in ppm,C=0.01ppm} Index Value:- 0-50 :- Normal 50-100:- possible spice of Heating More than 100 :- Hot Zone 6.Jone

ROPE HAULAGE                      Lashing chain C-Link D-Link Types of Rope Haulage 1)Direct rope haulage:- a)Single drum direct rope haulage b)Double drum direct rope haulage 2)Main & tail rope haulage 3)Endless rope haulage:- a)Under rope endless rope haulage b)Over rope endless rope haulage 4)Gravity rope haulage 1)Direct Rope Haulage a)Single Drums Direct Rope Haulage : This is simplest system of rope haulage. It consists of one track, one rope & one drum which are connected to a motor through gears. One end of the rope is connected with the train of tubs on the track & another end of the rope is connected to the drum. When the drum rotates situated at the top of the incline, the loaded tubs moves upwards. But for the downward journey of the empty tubs it does not require any power because a tub moves downward due to their own weight. The system

GMDC Recruitment –  26 Mine Sirdar (Sahayak) Vacancy – Last Date 27 February 2018 Gujarat Mineral Development Corporation Limited (GMDC) invites application for the post of 26 Mine Sirdar (Sahayak) on contract basis. Apply Online before 27 February 2018. Qualification/eligibility conditions, how to apply & other rules are given below… Advt. No. :  11/ 2017-18 GMDC Job Details : Post Name :  Mine Sirdar (Sahayak) No of Vacancy :  26 Posts Pay Scale :  Rs. 19950/- (per month) Eligibility Criteria for GMDC Recruitment : Educational Qualification :  HSC WITH 55 % marks Candidates . Besides, candidate should possess DGMS Mine Sirdar/Mine Mate certificate . Nationality :  Indian Age Limit :  Maximum age limit is 28 years as on 01.03.2018 Job Location :  Ahmedabad ( Gujarat ) GMDC Selection Process :  Selection will be through Interview. Application Fee :   Candidates have to pay Rs.200/- through Demand Draft in favour of GMDC LTD. Reserved category candidat

Oxygen( आक्सीजन )  यह वायुमण्डल मे पायी जाने वाली सबसे महत्वपूर्ण गैस है |इस गैस के बिना किसी भी जीव ,जन्तु ,मानवकी कल्पना नहीं की जा सकती || इस गैस को को प्राणवायु और जान गैस भी कहा जाता है | • Physial Properties(मुख्य गुण) 1. रंगहीन 2.गंधहीन  3.स्वादहीन  4.आपेक्षिक भार =1.1 5.Critical Temperature = -119•C 6. Critical Pressure = 50 atm 7.अत्यंत   सक्रिय गैस   8.पानी में थोड़ी मात्रा में घुलती है (20•C पर क़रीब 3% घुलती है 9.चीज़ों को जलने में मदद करती है   आक्सीजन  की ख़ान में खपत( Consumption of oxygen in mines) १ . मनुष्य के द्वारा साँस लेने से  २. फ़्लेम safety lamp जलने से  ३.कोयला का ऑक्सीकरण से  ४. लकड़ी के सड़ने या गलने से  ५. blasting से  ६. विस्फोट से  ७. आग लगने से  ८. diesel लोकोमोटिव चलने से  ९. coal सिम या पत्थरों के स्तरों से गर्म गैस निकलने से  १०. machinery चलने से   Follow us on Our Facebook page :  https://mbasic.facebook.com/miningtechnical/