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Classification Method Study of Joint Coal Fracture Based on Hoek-Brown Criterion


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1. ±êÌâ: Classification method study of joint coal fracture based on Hoek-Brown criterion
×÷Õß: Zhang Lisong; Yan Xiangzhen; Yang Xiujuan
´ÔÊé±àÕß: Xie, F
»áÒé: 5th International Symposium on In-Situ Rock Stress »áÒ鵨µã: Beijing, PEOPLES R CHINA »áÒéÈÕÆÚ: AUG 25-27, 2010
»áÒéÔÞÖúÉÌ: Int Soc Rock Mech; Inst Crustal Dynam China Earthquake Adm; Chinese Soc Rock Mech & Engn; Seismolog Soc China
À´Ô´³ö°æÎï: ROCK STRESS AND EARTHQUAKES  Ò³: 447-452   ³ö°æÄê: 2010


Classification method study of joint coal fracture based on Hoek-Brown criterion  
×÷Õß: Zhang, LS (Zhang Lisong)1; Yan, XZ (Yan Xiangzhen); Yang, XJ (Yang Xiujuan)  
±àÕß: Xie, F  
À´Ô´³ö°æÎï: ROCK STRESS AND EARTHQUAKES  Ò³: 447-452   ³ö°æÄê: 2010  
±»ÒýƵ´Î: 0 (À´×Ô Web of Science)  
ÒýÓõIJο¼ÎÄÏ×: 9 [ ²é¿´ Related Records ]     ÒýÖ¤¹ØÏµÍ¼      
»áÒé: 5th International Symposium on In-Situ Rock Stress »áÒ鵨µã: Beijing, PEOPLES R CHINA »áÒéÈÕÆÚ: AUG 25-27, 2010
»áÒéÔÞÖúÉÌ: Int Soc Rock Mech; Inst Crustal Dynam China Earthquake Adm; Chinese Soc Rock Mech & Engn; Seismolog Soc China  
ÕªÒª: Calculation formulas of geological strength index(GSI) and jointing parameter(JP) of rock strength index(RMi) are derived, and the GSI-JP modified analysis method for coal fracture in wellbore direction is given. Considering wavelet neural network, coal principal stresses with reservoir plane is analyzed, consequently coal seam plane fracture classification method is presented based on Hoek-Brown criterion. According to GSI-JP value, coal seam fracture coefficient size and energy method, four grades of A,B,C,D are divided for coal fracture degree at wellbore direction and reservoir plane, and coal fracture classification stan-dard is determined. Appling the classification method and standard, the distribution regularity of coal fracture is studied for ZP-1 Well and JinCheng region in QinShui basin. The research results show that coal GSI value of ZP-1 well is among 30-50, and JP value of RMI is 0.1-0.25, so coal fracture of ZP-1 is considered as grade B. Coal seam fracture degree of YangCheng, DingDian, FanZhuang, FanZhuang, ChangYe, ZhangZi in JinCheng block is defined as grade A, but northwest region coal seam is belong to grade D. The prediction results agree well with the measured values, therefore the classification method and standard are proved. Depending on research results, computer program is corresponding developed.  
Èë²ØºÅ: WOS:000290973700072  
ÎÄÏ×ÀàÐÍ: Proceedings Paper  
ÓïÖÖ: English  
ͨѶ×÷ÕßµØÖ·: Zhang, LS (ͨѶ×÷Õß),China Univ Petr, Coll Mech & Elect Engn, Dongying, Shandong, Peoples R China.  
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1. China Univ Petr, Coll Mech & Elect Engn, Dongying, Shandong, Peoples R China  
³ö°æÉÌ: CRC PRESS-TAYLOR & FRANCIS GROUP, 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA  
Web of Science Àà±ð: Engineering, Civil; Engineering, Petroleum; Engineering, Mechanical; Geosciences, Multidisciplinary; Mining & Mineral Processing  
Ñо¿·½Ïò: Engineering; Geology; Mining & Mineral Processing  
IDS ºÅ: BVB64  
ISBN: 978-0-415-60165-8
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