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evaluation method of mine ventilation system

In order to address the issue of high temperatures and thermal damages in deep mines the factors causing downhole heat damage at high temperatures were analyzed the mine ventilation system was optimized and rebuilt and a cooling system was established The proposed cooling system uses mine water as the cooling source and its features are based on the analysis of traditional cooling systems

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The Efficiency Study Of The Pushpull Ventilation System

The Efficiency Study Of The Pushpull Ventilation System

20201013ensp enspthe efficiency study of the pushpull ventilation system in underground mine xichen zhang 1missouri university of science and technology rolla mo usa this paper focuses on the effici ency evaluation for a pushpu ll ventilation system by using two methods the dead zone and the mean age of air value is used to evaluate the

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Ventilation System Design For The Wassa

Ventilation System Design For The Wassa

The paper describes the longterm ventilation planning goals and expectations as the mine achieves a production of 4000 tpd with truck haulage to surfaceintroductionthe wassa gold mine is located in the southern portion of the ashanti greenstone gold belt

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Virtual Labs Virtual Lab On Mine Ventilation

Virtual Labs Virtual Lab On Mine Ventilation

2018117ensp enspdetermination of method factor of a duct performance evaluation of mine evasee present in a ventilation system experiments under development calibration of inclined tube manometer using askania minimeter calibration of orifice plates fan rating test establishment of the relationship between kata cooling power and air velocity

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Algorithm Of Complex Ventilation Network Solution

Algorithm Of Complex Ventilation Network Solution

With the mine ventilation system becoming more and more complexthe traditional calculation methods have difficulty in meeting the requirements of network solutionits of significance to develop a quick algorithm for calculating complex wind networkthe theory of network solution of circuit airquantity method was systematically and thoroughly studiedalsothe limitation of the existing

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Research On Hazards Identification Evaluation And

Research On Hazards Identification Evaluation And

Deciding the constant right value for each index through the method of combing the fuzzy interval method and the analytic hierarchy process method and achieving variable weight using the value change of hazards and in the end establish the mathematical model of comprehensive evaluation of hazards about mine ventilation system

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Ventilation Measurements Missouri Sampt

Ventilation Measurements Missouri Sampt

2002214ensp enspventilation measurements for evaluation planning improvements and changes ventilation surveys air velocity and air pressure most important air temperature and specific weight especially needed in air conditioning regular spot checks to check status of system continuous monitoring of more threatening conditions to maintain safety air

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Journal Of China Coal Society201801

Journal Of China Coal Society201801

Fullmechanized coal mining and caving mining method evaluation and key technology for thick coal seam wang guofapang yihuicoal mining branch engineering practice and theoretical progress of topcoal caving mining technology in china

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30 Cfr 167 75371 Mine Ventilation Plan Contents

30 Cfr 167 75371 Mine Ventilation Plan Contents

20201118ensp enspthe mine ventilation plan shall contain the information described below and any additional provisions required by the district manager a the mine name company name mine identification number and the name of the individual submitting the plan information b planned main mine fan stoppages other than those scheduled for testing maintenance or adjustment including procedures

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Local Exhaust Ventilation Testing Protocols

Local Exhaust Ventilation Testing Protocols

20161228ensp enspcontaminant generation can be calculated and the system adjusted accordingly with the required slot velocity known for each individual slot hood future checks of the slot hood would only have to measure the average slot velocity to determine that it meets the minimum slot velocity set in the original evaluation

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Evaluation Of The Optimum Conditions For A Local

Evaluation Of The Optimum Conditions For A Local

The mine development in this study a computational analysis was conducted considering the ventilation method conditions of the duct and the fan for a selected test mine scenario to provide an effective and economical local ventilation system the resulting optimum local ventilation conditions suggested were

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Research On Safety Management Of Ventilation

Research On Safety Management Of Ventilation

Large metal mines have many features of returning to the wind shaft and multilevel mining the ventilation system is complex and the ventilation conditions and external environment of each area are different the general mine ventilation evaluation is for the entire mine system it is not possible to accurately and specifically make specific evaluations and management recommendations for

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Reliability Analysis Of Ventilation System Based On

Reliability Analysis Of Ventilation System Based On

The fuzzy fault tree analysis fta of mine ventilation system is set up based on thorough composition of the system with triangular fuzzy number being used as probability of elementary event and mine ventilation system fault being deemed as top event in this paper the reliability of fta has been analyzed and applied to a mine in gansu province

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Application Of Cut Set Method To Reliability Evaluation

Application Of Cut Set Method To Reliability Evaluation

For the reliability evaluation of mine ventilation network tunnel resistance and flow rate changes for all branches are considered as the reliability indices and criteria this paper describes a stepwise method for evaluation of the underground coal mine network reliability associated with major losses using the cut set method

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Paper Evaluation Of The Optimum Conditions For A

Paper Evaluation Of The Optimum Conditions For A

In this study a computational analysis was conducted considering the ventilation method conditions of the duct and the fan for a selected test mine scenario to provide an effective and economical local ventilation system the resulting optimum local ventilation conditions suggested were based on an evaluation of these characteristics

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Airflow Stability And Diagonal Mine Ventilation

Airflow Stability And Diagonal Mine Ventilation

201972ensp enspairflow reverse is a severe problem in an underground ventilation system in addition the airflow stability and safety production can be seriously affected by the problem of air velocity overrun in the roadways in this study the crucial causes of the ventilation problems in a coal mine case study are analyzed and a solution is proposed through an analytical methodology

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Analysis Of A Ventilation Network In A Multiple Fans

Analysis Of A Ventilation Network In A Multiple Fans

2020713ensp enspnot accounted for properly may result in ventilation system inefficiencies are shown a pressure and quantity ventilation survey has been conducted the hardy cross method using switching parameters has been found to be a good tool to solve a multi fan network the modified hardy cross method is faster and more flexible than other methods

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Distinguishing Investment Changes In Metro

Distinguishing Investment Changes In Metro

201833ensp enspyu hy yang l evaluation method of mine ventilation system based on grdy relational and support vector machine model coal mine saf 1 181184 2013 31 charkhakan mh heravig identification of changes formation scenarios in construction projects based on

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Autocad Based Mine Ventilation Analysis

Autocad Based Mine Ventilation Analysis

2020114ensp enspautocad based mine ventilation analysis ted sartain1 and don scheck1 1jim walters resources brookwood alabama usa 20hio automation inc athanes ohio usa abstract mine vent is a mine ventilation analysis system which runs inside autocad and uses the penn state and other ventilation simulators

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Brittleness Risk Evaluation Of Mine Safety Based On

Brittleness Risk Evaluation Of Mine Safety Based On

Mineral extracting involves lots of uncertain factors which take on the typically nonlinear characteristics to find out the accidents caused by main factors and make clear of disastercausing factors and risk sources a modified risk evaluation modelassociated interaction effect analysis method was constructed from four aspects of man subsystem machine subsystem working environment

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Alternative Methodologies For Evaluating

Alternative Methodologies For Evaluating

2012830ensp enspmethod endorsed by the mine safety and health administration msha for seal design in american mines these explosion tests are laborintensive expensive to conduct and can interfere with other critical underground safety and health research programs conducted by niosh therefore the prl has developed an alternative seal evaluation method

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Comparison Of Methods Dynamic Versus Hydrostatic

Comparison Of Methods Dynamic Versus Hydrostatic

2012830ensp enspfullscale testing of mine seals if fullscale performance testing is required to develop seal stressstrain response data the authors propose a hydrostatic test method as an alternative to fullscale explosion testingthis method uses water to load the seal to pressures at least twice the expected dynamic design load to determine stressstrain

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Method Of Evaluating Mine Ventilation System

Method Of Evaluating Mine Ventilation System

This paper discusses the factors to be taken into consideration when making analysis for a mine ventilation system in the paper the method and the discriminants for discriminating the stability of the direction of air flow the conditional formulas relating to keep the steady operation of mine fans and the basic conditions for preventing the propagation of disasters under emergency cases are

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Evaluation Method For Reliability Of Mine Ventilation

Evaluation Method For Reliability Of Mine Ventilation

Reliability evaluation can reflect directly reliability degree of mine ventilation system and provide useful information for decisionmakerlarge safety problem may be dissolved by changing mine ventilation system in time according to the informationthis paper analyzed and compared domestic reliability evaluation technologies of mine ventilation system and indicated the development tendency

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Evaluation Of Mine Ventilation System Based On Gray

Evaluation Of Mine Ventilation System Based On Gray

Based on extensive investigation and analysis of main factors influencing the running of mine ventilation systema comprehensive evaluation index system for mine ventilation system was constructed by utilizing the principle and method of multiobjective decision

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Topsis Method For Evaluation On Mine Ventilation

Topsis Method For Evaluation On Mine Ventilation

20201215ensp enspthe indices system of mine ventilation system evaluation was put forwardthe multilevel model of topsistechnique for order preference by similarity to ideal solution based on entropy weight was establishedthis method was applied to evaluate the ventilation system in 4th5th and 6th mine of pingdingshan coal group corporation ltdthe order preference of mine ventilation systems was

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Topsis Method For Evaluation On Mine Ventilation

Topsis Method For Evaluation On Mine Ventilation

Request fulltext topsis method for evaluation on mine ventilation system article april 2007 with 10 reads april 2007 with 10 reads

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Mine Ventilation System Evaluation Model Based On Rs

Mine Ventilation System Evaluation Model Based On Rs

Li hao1xiao junxian1tian tao21coal mine exploration of guizhou provinceguiyang 550008china2guizhou dafang coal industry coltd dafang 551600chinathe grey comprehensive evaluation of mine ventilation system based on ahpjsafety in

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Rationality Evaluation Of Coal Mine Ventilation System

Rationality Evaluation Of Coal Mine Ventilation System

Rationality evaluation of coal mine ventilation system based on gas monitoring data december 2010 caikuang yu anquan gongcheng xuebaojournal of mining and safety engineering 274522526531

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Feasibility Of Mine Ventilation System Bp Network

Feasibility Of Mine Ventilation System Bp Network

In recent yearsbp network and improved bp network are usually used in mine ventilation system evaluationhoweverits feasibility can not be provedon the basis of prefect mine ventilation evaluation index systemfuzzy comprehensive evaluation program and bp network evaluation program using visual basic 60 are obtainedfinallytwo methods in practice are compared and the correctness and

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Data Mining Applications In Evaluating Mine

Data Mining Applications In Evaluating Mine

A mines ventilation system is an important component of an underground mining system it provides a sufficient quantity of air to maintain suitable working environment

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