文献类型：期刊文献

中文题名：Principles of the roof cut short-arm beam mining method (110 method) and its mining-induced stress distribution

英文题名：Principles of the roof cut short-arm beam mining method (110 method) and its mining-induced stress distribution

作者：Tao Zhigang[1,2,3];Song Zhigang[1,3];He Manchao[1,3];Meng Zhigang[4];Pang Shihui[1,3]

机构：[1]State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China;[2]Shaoxing Univ, Ctr Rock Mech & Geoharzards, Shaoxing 312009, Peoples R China;[3]China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China;[4]Geol Explorat & Res Inst LNYS, Shenyang 110000, Liaoning, Peoples R China

年份：2018

卷号：28

期号：3

起止页码：391

中文期刊名：矿业科学技术学报：英文版

外文期刊名：INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000434282000004)、CSTPCD、、EI(收录号：20174104260023)、Scopus(收录号：2-s2.0-85030723322)、WOS、CSCD2017_2018、CSCD

基金：The research was supported by the funding of National Natural Science Foundation of China ( 41502323 , 41602308 ) and the Open Fund of Zhejiang Collaborative Innovation Center for Prevention and Control of Mountain Geologic Hazards (no. PCMGH2016Z02 ). The authors would like to thank the State Key Laboratory for Geo-mechanics and Deep Underground Engineering for their support and assistance in making theses research findings possible. The authors also express gratitude to other participants for their support.

语种：英文

中文关键词：采矿方法;房顶;分发;横梁;手臂;压力;技术革新;数字模拟

外文关键词：Mining innovation; 121 mining method; Cutting cantilever beam theory; Non-pillar mining; 110 mining method

中文摘要：Since the 1960 s, mining science and technology in China has experienced two technical innovations, i.e.the ‘‘Masonry Beam Theory(MBT)" and ‘‘Transfer Rock Beam Theory(TRBT)". Based on those theories, the conventional mining method(being called the 121 mining method) was established, consisting of excavating two tunnels with a pillar left for mining a working panel. However, with increasing mining depth,engineering geological disasters in the underground caverns have been frequently encountered. In addition, the use of the coal-pillar mining results in a large amount of coal resources unexploited. In order to address the problems above, the ‘‘Roof Cut Short-Arm Beam Theory(RCSBT), being called the 110 mining method)" was proposed by He Manchao in 2008. The 110 mining method features the mining of one coal seam panel, excavating necessarily only one roadway tunnel and leaving no pillars. Realization of the 110 mining method includes the following steps:(1) directional pre-splitting roof cutting,(2) supporting the roof by using high Constant Resistance Large Deformation bolt/cable(CRLD), and(3) blocking gangue by hydraulic props. This paper presents an overview of the principles, techniques and application of the 110 mining method. Special emphasis is placed on the numerical simulation of the geostress distribution found in the mining panel using the 110 method compared to that of the 121 method. In addition, the stress distribution on the ‘‘short beam" left by the roof cutting when performing the 110 method was also investigated using both numerical simulation and theoretical formulation.

外文摘要：Since the 1960s, mining science and technology in China has experienced two technical innovations, i.e. the "Masonry Beam Theory (MBT)" and "Transfer Rock Beam Theory (TRBT)". Based on those theories, the conventional mining method (being called the 121 mining method) was established, consisting of excavating two tunnels with a pillar left for mining a working panel. However, with increasing mining depth, engineering geological disasters in the underground caverns have been frequently encountered. In addition, the use of the coal-pillar mining results in a large amount of coal resources unexploited. In order to address the problems above, the "Roof Cut Short-Arm Beam Theory (RCSBT), being called the 110 mining method)" was proposed by He Manchao in 2008. The 110 mining method features the mining of one coal seam panel, excavating necessarily only one roadway tunnel and leaving no pillars. Realization of the 110 mining method includes the following steps: (1) directional pre-splitting roof cutting, (2) supporting the roof by using high Constant Resistance Large Deformation bolt/cable (CRLD), and (3) blocking gangue by hydraulic props. This paper presents an overview of the principles, techniques and application of the 110 mining method. Special emphasis is placed on the numerical simulation of the geostress distribution found in the mining panel using the 110 method compared to that of the 121 method. In addition, the stress distribution on the "short beam" left by the roof cutting when performing the 110 method was also investigated using both numerical simulation and theoretical formulation. (C) 2017 Published by Elsevier B.V. on behalf of China University of Mining & Technology.