Coal Mining Technology 2009 Issue 5 Quality Development of Valve for Powered Support and Its Tendency

Quality Development of Valve for Powered Support and Its Tendency
jiang jin qiu

..............page:1-3

Analysis of Cracks Distribution Characteristic of Overlying Strata Influenced by Mining and Network Simulation
zhang yu jun ; li feng ming

..............page:4-6,82

Research on Reasonable Dimension of Protective Pillar for Cross-cut in Steeply Inclined Coal Seam
li ying jie ; pan yi shan ; yan hai peng

..............page:7-9,61

Research on Prediction of Mining Subsidence for Steeply inclined Coal Seam
ao jian feng ; wu zuo

..............page:10-12

Failure Characteristic of Residual Coal Pillar and Its Influence on Downward Mining
zhu tao ; song min ; kang li xun ; zhuo qing feng ; cui yong feng

..............page:13-15,49

Analysis of Nonlinear Visco-elastic-plastic Creep Model for Rock Specimen
liu yu chun ; zhao yang feng

..............page:16-18

Technology of 30kt/d Full-mechanized Mining with Large Mining Height in Large Angle Coal seam
liu zheng mao

..............page:19-20,69

Second Mining under Isolated Pillar Left by Wedge-pillar Mining Method
song bao sheng ; wang chang wei ; li yong

..............page:21-23,45

Practice and Experience of Large Mining-height Mining Face with Hard Roof and Hard Coal
zhu run sheng

..............page:24-26

Comprehensive Prevention of Rock-burst in 307 Panel in Meiyukou Colliery
meng qing

..............page:83-85

Research on Supporting Density of Powered Support for Full-mechanized Caving Ming in Shuiliandong Colliery
li lin ; xu gang

..............page:86-87,93

Analysis of Deformation Rules of Roadway in Narrow Pillar Surrounded by Gob
chen xue zhi

..............page:88-89,96

Research on Long Term Deformation Observation of Roadway in Deep Soft Rock
zheng xi hong ; kong de shan ; zhu ruo jun

..............page:90-93

Construction and Run of High-efficiency Mining Mode in Technical Reformation of Local Collieries
yu ji dong

..............page:94-96

Practice of Reducing Pollution Discharge and Utilizing Water Resource in Underground Mine
xu cheng bin ; wu wei min

..............page:97-98,96

mei kuang kai cai qi kan zheng gao jian ze

..............page:后插1

Application of Earth-sound Monitoring Technology in Rock-burst Forecast and Prediction
sun shu liang ; wang yuan jie ; qiao zhong dong ; yu gui liang ; ma lian xiong

..............page:80-82

Technology of Surrounding Rock Control in Roadway Influenced by Intersecting and Dynamic Pressure of Mining Face
wang shi jin ; shao yuan chun

..............page:77-79,73

Research on Movement Characteristic of Surrounding Rock in Full-mechanized Mining Face with Large Mining Height
chen jia xuan

..............page:74-76

Application of PLC Programmable Controller in Automatic Control of Overhead Manned Equipment
xiao gong ping ; luo qian fa

..............page:72-73

Design and Manufacture of KQY-300 Press
wu jun xia

..............page:70-71

Application Effect Evaluation of Common Soft-start System for Belt Conveyor
chen tie liang ; li wei dong ; wang wen bo

..............page:67-69

Practice of Memonic Cutting of Faceboss Coal Cutter
suo zhi wen

..............page:65-66,85

Analysis of Floor Heave of Main Roadway in Soft Rock and Its Prevention in Huating Colliery
li dian guo ; ju wen jun ; wei dong ; li qian

..............page:43-45

Full-mechanized Strip Mining in Xinzhi Colliery under Baimougou Village
zuo si mao ; song xiao ping

..............page:40-42,29

Research on Distribution Rules of Floor Failure Area of Mining Face on Pressurized Water
ji zhen wen ; pan jun feng ; ren yong ; wang yong xiu

..............page:37-39,29

Observation of Surface Subsidence Induced by Full-mechanized Caving Mining in Xinglongzhuang Colliery
yue zun cai ; tan zhi xiang ; yu de liang ; gao ming zhang ; deng ka zhong

..............page:33-36

Practice of Full-mechanized Caving Mining Face with Strong Underground Pressure in Softly Inclined and Extremely Thick Coal Seam
li bi zhu ; wei dong ; yang shi jie ; zhou peng

..............page:30-32

Analysis of Roof Fall Cause and Its Control in Large Height Mining Face
zuo zhen dong

..............page:27-29

Influence of Movement Track of Four-bar Linkage Structure on Overall Performance of Powered Support
ma duan zhi ; he xiao te ; niu yan qi

..............page:62-64

Research on Mightiness Powered Support for Shallow Buried and Thin Coal Seam
su lin jun

..............page:60-61

Development of Top-coal Caving Powered Support for Jiaoping Mining Area
zhang da wei ; meng feng lin ; wu tao

..............page:58-59

Research on Main Technical Problems in 4-prop Top-coal Caving Powered Support
wang biao mou ; guo zuo feng

..............page:56-57

Technology of Reinforcement with Grouting in Chamber for Belt Conveyor\'s head
zhao kang hong ; yang shu jun

..............page:54-55

New Technique of Driving Cross-cut through Coal Seam with High Bursting Danger
meng qing fan ; qiao yan wu ; xu shou ren ; chang ming hui ; ai can biao

..............page:52-53

Technology of Supporting Super High Roadway in Large-height Mining Face
cheng xiao yong

..............page:50-51,26

Anchored Bolt Supporting Design for Large deformation Roadway with High Geostress in Deep of Lu\'an Mining Area
wu zeng guang

..............page:46-49