نوع مقاله: علمی - پژوهشی

نویسندگان

1 دانشجو

2 عضو هیئت علمی

3 عضو هیات علمی

چکیده

این تحقیق برای پیش‎بینی میزان گازخیزی لایه زغال‏ و ارزیابی ریسک سوانح ناشی از آن در معدن مکانیزه زغال‏سنگ طبس به کمک تخمینگر زمین‎آماری کریجینگ شاخص چندگانه و بر اساس داده‏های برداشت‌شده در خصوص گازخیزی لایه زغال C1 از 48 حلقه گمانه انجام شد. نتایج حاصل از نقشه پیش‎بینی گازخیزی نشان داد که تقریبا 12 درصد از کل مساحت محدوده مورد مطالعه، گازخیزی کمتر از (m3/t) 5 (ریسک کم)، 11 درصد از آن گازخیزی (m3/t) 10-5 (ریسک متوسط) و 15 درصد از آن دارای گازخیزی (m3/t) 15-10 (ریسک بالا) دارد. در حالی که حدود 62 درصد از کل مساحت مورد مطالعه، گازخیزی بالای (m3/t) 15 دارد که دارای ریسک گازخیزی بسیار بالایی است، بنابراین بر اساس تجارب حاصل از پانل‏های استخراج ‌شده، در مناطق با ریسک گازخیزی پایین تا متوسط ‏می‏توان با مدیریت استخراج و اصلاح سیستم تهویه عملیات استخراج را ادامه داد، اما در مناطق با ریسک گازخیزی بالا و خیلی بالا مدیران معدن مجبور به پیاده‏سازی سیستم متان‌زدایی‌اند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Gasification Risk Assessment of Tabas Mechanized Coal Mine Using Multiple Indicator Kriging Method

نویسندگان [English]

  • vali Safari 1
  • vahid vaziri 1
  • jafar khademi hamidi 3

1 Student

3 Faculty member

چکیده [English]

This study uses multiple indicator kriging estimator based on assayed data acquired from 48 exploration boreholes in Tabas coal mine in order to predict gas content of coal seams. Results of the estimated block models showed that approximately 12% of the total area has the gas content of less than 5 (m3/ton) (Low risk), 11% has 5-10 (m3/ton) (Medium Risk) and 15% has 10- 15 (m3/ton) (High Risk), while about 62% of total area has the gas content of more than 15(m3/ton) which is of a high risk. Therefore, according to the experiences from mined panels, in the zones with lower to median gasification risk, it is possible to keep the mining operation running with management and optimization of the ventilation system. However, in the zones with higher gasification rate, demethanization process is mandatory.

کلیدواژه‌ها [English]

  • Gas content
  • Geostatistics
  • Multiple indicator Kriging
  • Mechanized Tabas coal mine

منابع

[1]. US Bureau of Labor Statistics News, 2007, "National Census of Fatal Occupational Injuries in 2006", USDL 07-1202.

[2]. Cao, Y.X., He, D.D., David, C.G., 2001, "Coal and gas outbursts in footwalls of reversefaults", International Journal of Coal Geology 48 (1–2), 47–63.

[3]. Wold, M.B., Connell, L.D., Choi, S.K., 2008, “The role of spatial variability in coal seamparameters on gas outburst behaviourbehavior during coal mining”, International Journal of Coal Geology 75 (1), 1–14.

[4]. State Administration of Coal Mine Safety, 2009, “The 2008 Report of National CoalMine Accident Analysis”, China (in Chinese).

 [5]. Oliver,M., Webster,R., Gerrard,J., 1989, “Geostatistics in Physical Geografy”, Part 1:therory transactions of the In stature of British Geographers ,New Series,Vol.14.No.3, (1989), PP.256-269.گزارش زمین‏شناسی و طرح توجیهی معدن زغال سنگ طبس، بخش شرکت آدام، ، دفتر فنی و معاونت پژوهشی طبس، 1361

[6]. Daniela D., Melo, M. T. C., Elisabetta P., MariangelaMari Angela S., Daniele P., Luis R., 2016, “Combining natural background levels (NBLs) assessment with indicator kriging analysis to improve groundwater quality data interpretation and management”, Original Research Article Science of The Total Environment, Volumes 569–570, Pages 569-584.

 [7]. Delhomme, J.P., 1978, “Kriging in the hydro sciences”, Water Resources 1 (5), 251–266.

[8]. Volpi, G., Gambolati, G., 1978, “On the use of a main trend for the kriging technique inhydrology”, Water Resources 1 (6), 345–349.

[9]. Dunlap, L.E., Spinazola, J.M., 1984, “Interpolating water-table altitudes in west-central Kansasusing kriging techniques”, Geological Survey Water-Supply-Paper 2238, p. 19.

[10]. Aboufirassi, M., Marino, M.A., 1989, “Kriging of water levels in the Sous aquifer”, Journal of Mathematical Geology 15 (4), 537–551.

 

[11] Hoeksema, R.L., Clapp, R.B., Thomas, A.L., Hunley, A.E., Farrow, N.D., Dearstone, K.C., 1989, “Cokriging model for estimation of water table elevation”, Water Resources 25 (3), 429–438.

[12]. Domenico, P.A., Schwartz, F.W., 1990, “Physical and Chemical Hydrogeology”, Wiley, New York.

[13]. Hevesi, J.A., Flint, A.L., Istok, J.D., 1992, “Precipitation estimation in mountainous terrainusing multivariate geostatistics”, Journal of Applied Meteorology 31, 677–688.

[14]. Takara, K., Oka, A., 1992, “Regionalization of probable rainfall using regression analysis andkriging”, Journal of Structural Mechanics and Earthquake Engineering 456 (II-21), 1–10.

[15]. Hudson, G., Wackernagel, H., 1994, “Mapping temperature using kriging with externaldrift”, Theory and an example from Scotland, International Journal of Climatology 14 (1), 77–91.

[16]. Knotters, M., Brus, D.J., Oude-Voshaar, J.H., 1995, “A comparison of kriging, co-krigingand kriging combined with regression for spatial interpolation of horizon depth with censored observations”, Geoderma 67, 227–246.

[17]. Pebesma, E., Kwaadsteniet, J.W., 1997, “Mapping groundwater quality in the Netherlands”,Journal of Hydrology 200, 364–386 (Amsterdam).

[18]. Goovaerts, P., 1997, “Geostatistics for Natural Resources Evaluation”, Oxford University Press, New York.

[19]. Goovaerts, P., 1999, “Geostatistics in soil science: state of the art and perspectives”, Geoderma 89, 1–46.

[20]. Goovaerts, P., 2000, “Geostatistical approaches for incorporating elevation into the spatialinterpolation of rainfall”, Journal of Hydrology 228, 113–129 (Amsterdam).

[21]. Pardo-Ig, U.E., 1998, “Comparison of geostatistical methods for estimating the areal averageclimatological rainfall mean using data on precipitation and topography”, International Journal of Climatology 30, 1031–1047.

[22]. Ghahraman, B., Sepaskhah, A.R., 2001, “Autographic rain-gage network design for Iranby kriging”, Journal of Science and Technology 25 (B4), 653–660.

[23]. Knotters, M., Bierkens, M.F.P., 2001, “Predicting water table depths in space and timeusing a regionalized time series model”, Geoderma 103, 51–77.

[24]. Desbarats, A.J., Logan, C.E., Hinton, D.R., 2002, “On the kriging of water table elevationsusing collateral information from a digital elevation model”, Journal of Hydrology 255, 25–38 (Amsterdam).

[25]. Shahrokhnia, M.B., Sepaskhah, A.R., Javan, M., 2004, “Estimation of hydraulic parametersfor karoon river by cokriging and residual kriging”, Iranian Journal of Science & Technology, Transaction B 28 (B1), 153–163.

[26]. Shoji, T., Kitaura, H., 2004, “Statistical and geostatistical analysis of rainfall in centralJapan”, Journal of Computers and Geosciences 32 (8), 1007–1024.

[27]. Cinnirella, S., Buttafuoco, G., Pirrone, N., 2005, “Stochastic analysis to assess the spatialdistribution of groundwater nitrate concentrations in the Po catchments Italy”, Journal of Environmental Pollution 133, 569–580.

[28]. Hu, K., Huang, Y., Li, H., Li, B., Chen, D., White, R., 2005, “Spatial variability of shallowgroundwater level, electrical conductivity and nitrate concentration, and risk assessment of nitrate contamination in North China Plain”, Journal of Environmental International 31, 896–903.

[29]. Gerstmann H., Doktor D., Gläßer C., Möller  M., 2016, “A geostatistical model for the Kriging-based spatial prediction of crop phenology using public phenological and climatological observations”, Original Research Article Computers and Electronics in Agriculture, Volume 127, Pages 726-738.

[30]. Reis, A., Sousa, A., Silva, E., Fonseca, E., 2005, “Application of geostatistical methods toarsenic data from soil samples of the Cova dos Mouros mine (Vila Verde–Portugal)”, Journal of Environment Geochemical Health 27, 259–270.

[31]. Sepaskhah, A.R., Ahmadi, S.H., Nikbakht-Shahbazi, A.R., 2005 “Geostatistical analysis ofsorptivity for a soil under tilled and no-tilled conditions”, Soil and Tillage Research83, 237–245.

[32]. Benmostef Largueche, F.-Z., 2006, “Estimating soil contamination with kriging interpolationmethod”, American Journal of Applied Sciences 3 (6), 1894–1898.

[33]. Mercedes R. D., Thomas G. O., Dominique A., Blandine L., Jean-Baptiste P., Christian W., Nicolas P.A., 2016, “Prediction of soil texture using descriptive statistics and area-to-point kriging in Region Centre (France)”, Original Research Article Geoderma Regional, Volume 7, Issue 3, Pages 279-292.

[34]. Sharda, V.N., Kurothe, R.S., Sena, D.R., Pande, V.C., Tiwari, S.P., 2006, “Estimation ofgroundwater recharge from water storage structures in a semi-arid climate of India”, Journal of Hydrology 329, 224–243 (Amsterdam).

[35]. Ahmadi, S.H., Sedghamiz, A., 2007, “Geostatistical analysis of spatial and temporal variationsof groundwater level”, Journal of Environmental Monitoring Assessment 129, 277–294.

[36]. Gundougdu, K.S., Guney, I., 2007, “Spatial analyses of groundwater levels using universalkriging”, Journal of Earth System Science 116 (1), 49–55.

[37]. Nikroo, L., Zare, K.M., Sepaskhah, A.R., Fallah, S.R., 2010, “Groundwater depth and elevationinterpolation by kriging method in Mohr Basin of Fars province in Iran”, Environmental Monitoring and Assessment 166, 387–407.

               

[38]. Margaret, A., Carignan, J., 1997, “Geostatistique lineaire application au domain minier”, Presses de IEcole des Mines de Paris.

[39]. Skochinsky, a., komarov, v., 1996, “Mine ventilation”, Mir publishers – Moscow.

 [40]. Johnston, K., Jay M., Hoef, V., Krivoruchko, K., Lucas, N., 2003, “Using ArcGIS Geostatistical Analyst”, Environmental System Research Institute - USA.

[41]. Burke, S., Chu, G., Heyer, J., Lee, J., Tang, X., Tran, T., Zhang, L., 2013, “Mass Quantification of PCE in Los Angeles Groundwater from the GeoTracker Database”, UCLA Institute of the Environment and Sustainability Senior Practicum.

[42]. Kamble, K. H., Aggrawal, P., 2011, “Geostatistical Analyst for Deciding Optimal Interpolation Strategies for Delineating Compact Zones”, International Journal of Geosciences, PP. 585-596.

[43]. Ahmed, S. S., El Tahlawi, M. R., Rashad, M. Z., Saleem, H. A., 2007, “Kriging techniques and GIS for management of phosphate extraction at hagaria district”, egypt, Journal of Engineering, Sciences, Assiut University, Vol. 35, No. 6, pp. 1559-1574


15.