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1 Journal of Mining & Safety Engineering Vol 24 No 2 J une 2007 : (2007) , 1, 2 1, (1, ; 2 ( ), ) :,,,,, : ; ; ; ; : TD : A Prest ress Truss Bolt Support Technology for Coal Roadway L I Gui2chen 1, ZHAN G Nong 1, L IU Zhao2hui 2, KAN Jia2guang 1 (1 State Key Laboratory of Coal Resource and Mine Safety, China University of Mining & Technology, Xuzhou, Jiangsu , China ; 2 Xutuan Coal Mine, Huaibei Mining ( Group) Co Ltd, Huaibei, Anhui , China) Abstract : A new pattern of support technology of prestress trusses was expounded in detail, in2 cluding it s conception, mechanism, advantages as compared to anchor cable, forms, and con2 struction technique The innovation of t he technology and it s application character in roadway are also introduced According to t he practical use in Huaibei Xutuan Coal Mine, t he character and action of t he prestress truss structure is verified Therefore, t he prestress truss technology can not only control the distortion of roadway, but also imp rove t he driving speed, resulting in a reduction of cost, making t he roadway be safe and reliable In addition, it has provided a ba2 sis for support in coal mines wit h various complex conditions Key words : coal roadway ; bolt supporting ; p rest ress t russ ; support technology ; applicatio n st udy [122 ] : 1 1),,,,,, 70 %, 2) 90 %,, : : ( ) : (19802),,,, E2mail : com Tel : 转载

2 2 : 151 3),, 50 %,,, 4),,,,, 5),,,,,, 6),,, ; 2,,,, [ 3 ],,,,,,,,,,, 70 %, 2/ 3,,,,,,,,, 3, [4 ],,, [ 5 ], 3 1,,,, 1 [6 ] 1 ( ) Fig 1 The structure of pretension truss (some cable) 3 2,, ( 2),,,,,,,,,,, 2 Fig 2 The load structure and action mechanism of pretension truss 3 3 :1),,, ;2),, ;,, ;3),

152 24 ;4), ;,, ;5),,, [7 ] 3 4 3 4 1,,,, 4 0 m,,,, 3,, ( 4),,,,

3 The support forms of the roof trusses 3 4 2 4 Fig 4 The linker

application of the horizontal trusses on the wall ( Huaibei

3 ;4), ;,, ;5),,, [7 ] ,,,, 4 0 m,,,, 3,, ( 4),,,, 5 Fig 5 The application of the vertical trusses on the wall 3 Fig 3 The support forms of the roof trusses Fig 4 The linker of trusses,,,,,,,, [8 ] :1),, 5,, ;2), 6, 6 ( ) Fig 6 The application of the horizontal trusses on the wall ( Huaibei Xutuan Coal Mine) 3 5,, 3 5 1, 60 [ 9 ],, ; ;, ;,, 70 kn 3 5 2,,,,,,, 10,,,

2 : 153, 7 7 (mm) Fig 7 The vertical truss was adjusted horizontal truss on the wall 4 72 23 71 23,,,,,,,,,,,,,,,,,,, 8 [10 ], 260 m/ 72 23,, 6 200 300 mm, 200 mm,( 50 m ) 500 600 mm,,, 9, 2006 4 5

4 2 : 153, 7 7 (mm) Fig 7 The vertical truss was adjusted horizontal truss on the wall ,,,,,,,,,,,,,,,,,,, 8 [10 ], 260 m/ 72 23,, mm, 200 mm,( 50 m ) mm,,, 9, m,, 9 Fig 9 The laceration of channel steel beam eyelet 5 1) 72 23,,,,, 2) 72 23,,,,, 30 % 3), 4) km, 20 % 30 %,,, : ( ) (mm) Fig 8 Coal roadway bolt (trusses) support methods of the working face in Xutuan coal mine U, 500, [1 ],,, [ M ] :,1999 [2 ],,, [ M ] :,2004 [3 ],,,

5 [J ],2006 (2) :425 L I Gui2chen, ZHAN G Nong, KAN Jia2guang, et al The mechanism analyses and control countermeasure about two coal laneways roof fall accident s[j ] Ener2 gy Technology and Management, 2006 (2) :425 [4 ] [J ],1999,20 (2) :23225 FU Yue2sheng Application of the simple bolt truss in coal roadway support [ J ] Mine Construction Technology, 1999,20 (2) :23225 [5 ] [J ], 1999, 16 (3/ 4) : ZHAN G Yi2dong The different actions to the roof support of trusses and common bolt s [ J ] Ground Pressure and Strata Control, 1999, 16 ( 3/ 4 ) : [6 ],, [J ],2002,19 (4) :12 4 ZHAN G Nong, GAO Ming2shi, XU Xing2liang Pretentioned supporting system of roadway and it s engineering application [ J ] Ground Pressure and Strata Control, 2002,19 (4) :124 [7 ],, [J ], 2004,23 (12) : ZHAN G Nong, L I Xue2hua, GAO Ming2shi Pre2 tensioned support of roadway driven along next gob and heading adjacent advancing coal race and it s ap2 plication[j ] Chinese Journal of Rock Mechanics and Engineering,2004,23 (12) : [8 ], [J ],2006,23 (1) :34238 ZHAN G Nong, YUAN Liang Control principle of separating and broken roof rock strata in roadway [J ] Journal of Mining & Safety Engineering, 2006, 23 (1) :34238 [9 ],,, [J ], 2003,20 (1) :20221 NIN G Jian2guo, J IAN G Jin2quan, DON G Jian2jun, et al The optimum study of the angle of the truss bolt supporting the roof in the actual mining roadway [J ] Ground Pressure and Strata Control, 2003, 20 (1) :20221 [10 ],,, [J ],2005,2 (4) :10212 L I Gui2chen, WAN G Kai, ZHAN G Nong, et al Application of anchor belt net and cable support in large slope angle soft and gas outburst coal road driving[j ] Journal of North China Institute of Sci2 ence and Technology, 2005,2 (4) :10212 ( 149 ) [5 ],,, [J ], 1995,17 (1) :10213 L I Yu, HUAN G Mei, L IAO Guo2hua, et al Fractal character of the time2space change of microseismicity before coal outburst s or rockburst s[j ] Journal of U2 niversity of Science and Technology Beijing, 1995,17 (1) :10213 [6 ],,, [J ],2005,27 (7) : L U Cai2ping, DOU Lin2ming, WU Xing2rong, et al Frequency spectrum analysis on microseismic monito2 ring and signal differentiation of rock material [ J ] Chinese Journal of Geotechnical Engineering, 2005, 27 (7) : [7 ] SLAWOMIR J G, ANDRZEJ K [ M ] :,1998 [8 ] [ D ] :,2005

增刊谢小林, 等. 上海中心裙房深大基坑逆作开挖设计及实践 745 类型, 水位埋深一般为地表下.0~.7 m 场地地表以下 27 m 处分布 7 层砂性土, 为第一承压含水层 ; 9 层砂性土

增刊谢小林, 等. 上海中心裙房深大基坑逆作开挖设计及实践 745 类型, 水位埋深一般为地表下.0~.7 m 场地地表以下 27 m 处分布 7 层砂性土, 为第一承压含水层 ; 9 层砂性土第 34 卷增刊岩土工程学报 Vol.34 Supp. 202 年. 月 Chinese Journal of Geotechnical Engineering Nov. 202 上海中心裙房深大基坑逆作开挖设计及实践谢小林 2 2, 翟杰群, 张羽, 杨科, 郭晓航, 贾坚 (. 同济大学建筑设计研究院 (