1Absorbed gas effect on seepage property of loaded coal containing gas in laboratoryWEI Jian-ping, WEI Le, WANG Deng-ke653-6572Experimental study on calculation of gas lost quantity in coal samplesWANG Yungang, YAN Gui-yun, LI Meng658-662,6903Spectrophotometric determination of hydroxyl radical of decomposing coal-mine gas by methylene blue decolorationDAI Jun, WANG Zheng-jin, SONG Hui-lei663-6674Research progress on coalfire diffusion and fracture development of coal rocks in coal-fire areasXU Yong-liang, WANG Lan-yun, CHU Ting-xiang, YU Ming-gao668-6725Research on mine rescue drilling positioning accuracy and construction errorsLIU Shao-tang, YANG Fu-qin673-6766Determination of model boundary sizes in numerical simulation of roof falling in gob and study of roof falling lawGAO Jian-liang, JIN Xiao-min, YANG Ming677-6807Numerical simulation of water pressure transmission during production of CBM in Panzhuang blockWANG Xiang-hao, WANG Yan-bin, NI Xiao-ming, WEI Qiu-ye, CHENG Ja-hui681-6858Study on reasonable hole-sealing-depth down the seam of Mengjin mineWEI Feng-qing, LIAN Shao-peng, ZHANG Chuan, LIU Shao-bo686-6909Discovery and significance of graphoglyplids trace fossils in Dongpu depressionZHANG Guo-cheng, WANG Lei, WU Xian-tao691-69610Analysis on sedimentary characteristics and environments of Paleogene in Mengyin basin, southwestern Shandong provinceZHENG De-shun, GAO Lin, LI Ming-long, ZHOU Lu, CHENG Yong, ZHANG Fei-peng697-702,70811Research on surface subsidence law under condition of deep mining with thick overburden conglomerate based on field measurement datumLI Chun-yi, LI Yan-hui, LIANG Wei-min, LIU Zhen-bo703-70812Study of 1/3 octave spectrum and weighted sound levelZHANG Deng-pan, GAO Zhi-qiang709-71213Digitization method of experimental diagram or numerical table in gear design and programmingWANG De-sheng, SI Yuan-yuan, ZONG Ya-dong713-71814Modal analysis on head frame of high-transportation and long-distance belt conveyorZHANG Xin-min, LI Qian, LIU Zhi-chao719-72215Simulation analysis on transmission mechanism of disc type coaxial permanent magnet reducerZHANG Hai, WANG Xiao-lei, Zheng Ya-jun, Xiao Lei723-72616Research on detection method of coal power cable leakage based on adaptiveDONG Ai-hua, BIAN Shuai727-73117Facial expression recognition algorithm based on feature extraction method of LBPLI Liang, GAO Na732-73518Modal characteristics and earthquake time history analysis for tower structureYAN An-zhi, QI Li-li736-74019Research on cavity formation problem of heated viscoelastic cylinderCHEN Ya-juan, SHANG Xin-chun741-74420Influence of grain grading of manufactured-sand on mechanical behaviors of dry-mixed mortarLIU Gui-feng, LI Shi-chao, QIN Yan-long745-750 