Architecture, stress state and permeability of a fault ...

The Mafangquan (MFQ) fault zone, transecting a coal seam in Jiulishan coal mine in Jiaozuo coalfield, Henan Province, China, was investigated in detail in view of coal mining safety, including its architecture, stress and permeability features and implication for coal and gas outburst. 10 boreholes have been drilled for formation testing as well as coal sample retrieval for laboratory analysis.

Promotion effects of microwave heating on coalbed …

2021-5-5 · Sample preparation. The coal samples used in this study were collected from the No. 21 coal seam in the Jiulishan coal mine located in Jiaozuo, Henan province, China.

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2009-4-4 · Jiaozuo City currently possesses some power stations such as Jiaozuo Power Station, Danhe Power Station, AES Power Station, and Jinguan Power Station. The total installed capacity of the power stations is 3.12 million Kw, making it top in Henan Province.

Enhancing potential of hydrofracturing in mylonitic coal ...

2021-1-6 · Mylonitic coal was collected from the Jiulishan coal mine, near Jiaozuo, China. Jiulishan coal mine is located at the central part of the Jiaozuo coal basin and the sampled coal is No. 2 1 coal seam, which is the primarily mined layer of Jiulishan mine and also the typical mylonitic coal seam. 24

Influence radius of gas extraction borehole in an ...

Henan Polytechnic University, Jiaozuo, China. Email: [email protected] Funding information National Natural Science Foundation of China (No. 41772163, No. 51274090); The Science and Technology Innovation Team in Henan province (No. 15IRTSTHN029, No. 17IRTSTHN030). Abstract Coal seam degasification by in-seam drilling borehole is one of the popular ...

International Journal of Rock Mechanics and Mining …

2020-2-20 · of an outburst at the Jiulishan coal mine, Jiaozuo, China and general characteristics of outburst events explored. This coupling model enables the feasible range of outcomes of outbursts to be explored, providing guidance for mitigation and to inform disaster rescue. In addition, the

Coalbed methane resources and reservoir characteristics …

2018-2-23 · Jiaozuo coalfield is located in the northwest of Henan province, China, and close to the Southern Qinshui coal basin, the most successfully commercial CBM resource developed area in China. The No. II 1 coal seam is the main economic coal seam in Jiaozuo coalfield and its average thickness exceeds 5.36m. The maximum reflectance of vitrinite (R

(PDF) Pore characterization of different types of coal ...

2017-1-26 · MOE Engineering Center of Mine Disaster Prevention and Rescue, Henan Polytechnic University, Jiaozuo 454000, China ... than the other tested samples, which implies that Jiulishan coal.

Coalbed Methane Resources and Reservoir Characteristics of ...

2009-10-1 · Jiaozuo coalfield is located in the northwest of Henan province, China, and close to the Southern Qinshui coal basin, the most successfully commercial CBM resource developed area in China. The No. II 1 coal seam is the main economic coal seam in Jiaozuo coalfield and its average thickness exceeds 5.36m.

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2019-7-21 · , Henan Polytechnic University,Jiaozuo 454000, China ;2.Jiulishan Coal Preparation Plant, Henan Energy and Chemical Industry Group Co .Ltd,Jiao- zuo 454000, China ;3 ...

Coalbed methane resources and reservoir characteristics of ...

2021-3-29 · Jiaozuo coalfield is located in the northwest of Henan province, China, and Close to the Southern Qinshui coal basin. (lie most successfully commercial CBM resource developed area in China. The No. II1 coal seam is the main economic coal seam in Jiaozuo coalfield and its average thickness exceeds 5.36m. The maximum reflectance of vitrinite (R-0.max) No. II1 coal across the Jiaozuo is between 3 ...

Experimental Study of Gas Desorption Law of Deformed Coal

2011-1-1 · Henan Polytechnic University, Jiaozuo (2008) (in Chinese) Google Scholar. X.Y. Li. Characteristics and effecting factors of adsorption time of coalbed gas reservoir. Natural Gas Geoscience, 14 (2003), pp. 502-505 (in Chinese) View Record in Scopus Google Scholar. Q.L. Yang.

Jiaozuo | FIRST CHINA

2021-6-22 · Jiaozuo is a city in the region Henan, in China., City. Test Plant Construct Donglu Qiangnan, No. 9 Jiefang East Road, Jiaozuo, Henan, 454002, Jiaozuo, China

2020-11-5 · Jiaozuo: Henan Polytechnic University, 2014 . []. :, 2014 [15] Sun K M, Xin L W, Zhang S C, et al. Experimental study on laws of crack caused by gas burst of supercritical carbon dioxide.

Research on the effects of coal mining on the karst ...

2019-7-18 · Jiaozuo city, a typical coal mining industry city in China, is in the transition zone of Taihang Mountains and north Henan plain (Fig. 1) addition, Jiaozuo is an important distribution area of north China coalfield, where the proven reserves of coalfields start from Xiuwu to western Boai and southern Wuzhi.

Pore Structure Characteristics and Evolution Law of ...

2021-6-17 · Sample 6 Jiulishan mine, Jiaozuo mining area 2.32 12.92 7.68 2.55 Note: M ad, A ad, and V daf are the moisture, ash, and volatile matter contents on the air-dried basis, respectively. R 0,max is the maximum vitrinite reflectance. Beijing Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sample 6 Xinjiang Uygur Autonomous Region China Henan Province ...

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Measurement of pressure drop in drainage boreholes and its ...

2013-11-23 · The Jiaozuo Coalfield is located in northern Henan Province in China. The Jiulishan Mine is located in the central part of the Jiaozuo Coalfield and spans an area of 18.6 km 2.The No. 2 1 coal seam is the primary mined layer in the Jiulishan Mine and is characterized by a high danger of coal and gas outbursts. More than 60 sudden coal and gas outbursts have occurred during coal mining since ...

Investigation of pore structure characteristics and ...

2019-8-8 · The Jiaozuo coalfield is located in Henan Province, China. The Jiaozuo coalfield, which contains complex geological structures and abundant tectonic coal with a high gas content, high gas pressure, and low permeability, is one of the most notable coalfields in terms of coal and gas outburst disasters in China.

2020-7-20 · of Jiulishan mining region in Jiaozuo City, Henan Province, China, were selected as object of the study. Soil samples were collected from soil layers (0-10 cm, 10-20 cm, 20-30 cm, 30-40 cm and 40-50 cm) of soil profiles distributed in different slope

Enhancing potential of hydrofracturing in mylonitic coal ...

Mylonitic coal was collected from the Jiulishan coal mine, near Jiaozuo, China. Jiulishan coal mine is located at the cen-tral part of the Jiaozuo coal basin and the sampled coal is No. 2 1 coal seam, which is the primarily mined layer of Jiulishan mine and also the typical mylonitic coal seam.24

Great Potential for CBM/CMM Recovery and Utilization …

2020-12-13 · • CMM Power Generation Project at Jiulishan Coal Mine The project is located in Jiaozuo City, Henan Province. The coal production of Jiulishan coal mine in 2009 reached 910 thousand tonnes. In the project, three drainage pumps with a total capacity of 300 m3 per minute will be installed. The gas drainage volume is 140 m3 per minute at

Evaluation of hierarchically weighted principal component ...

2018-3-1 · Jiaozuo city is located in the transitional zone of the Taihang Mountains and the North Plain of Henan Province. It belongs to the warm temperate zone continental climate, where surface water system consists of many developed rivers, belonging to two major basins of the Yellow River and Haihe River.

(PDF) Investigation of pore structure characteristics and ...

Jiaozuo Shi: Henan Polytechnic University. Li YH, Lu GQ and Rudolph V (1999) Compressibility and fractal dimension of fine coal particles in relation to pore structure characterisation using ...

Macun, Jiaozuo, Henan at China Foreigners'' Guide

China Foreingers Guide, Your Guide to tour, do business and live in China. CFG brings you to every villages, towns,cities, counties, prefectures and provinces of China Mainland,,,,,

Optimum combination of water drainage, water supply and ...

2000-4-1 · It is located in the east of Jiaozuo coal mine, Henan Province, China. It consists of three mines: Hanwang Mine, Yanmazhuang Mine and Jiulishan Mine. The land surface is flat, and the whole area is about 30 km2. An intermittent river Shanmen flows through the sector from the north to the south.

Architecture, stress state and permeability of a fault ...

2018-10-1 · The Mafangquan (MFQ) fault zone, transecting a coal seam in Jiulishan coal mine in Jiaozuo coalfield, Henan Province, China, was investigated in detail in view of coal mining safety, including its architecture, stress and permeability features and implication for coal and gas outburst. 10 boreholes have been drilled for formation testing as well as coal sample retrieval for laboratory analysis.

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