GOB-SIDE ENTRY WITH LIMESTONE ROOF RETAINED BY ANCHORAGE CABLE AND INDIVIDUAL PROP SUPPORT
Theoretical analysis and in-situ tests are adopted to study the support method for gob-side entry with a limestone roof. A combinational method of the anchor cable and individual prop are put up, and it is shown that this combinational method is valid for cutting the roof with a certain hanging distance. It is also found that, because of the roof hanging effect, there exists an 8-metre-wide high stress concentrated zone in front of work face, and a concentrated load zone with 8 metres width lag behind work face. When main roof fractures, a rebound ahead of work face may occur, this can be used for forecasting both the time and the place of main roof fracturing.
YUN-LIANG TAN LI-JUN ZHANG
Education Ministry Key Lab of Mine Disaster Prevention and Control, Shandong University of Science a Binhu Mine, Zaozhuang Mine Ltd, Zaozhuang, Shandong 277000, P.R.China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
143-148
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）