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| RELATED LAWS AND VERIFICATION OF MINED-OUT AREA SPAN，TIME AND RESIDUAL DEFORMATION |
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Abstract With the exploitation of the coal resources，many engineering cases show that residual movement distortion in mined-out area would destroy the buildings on the top of the area. Combined with the characteristics of the mined-out area under Lishi—Jundu highway in Shanxi Province，the grouting in mined-out areas，drilling data and the related relationship between the mined-out area span，time，and residual subsidence are put forward；and the distortion anticipation methods and corresponding formulas are also presented. What is more，the grouting volume in the treatment mined-out area is analyzed. The related laws between the mined-out area span，time，and residual subsidence are gained. The effects of treatment mined-out area can be analyzed and estimated by calculating equivalent height of unfilled space of mined-out area and equivalent height of grouting volume.
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Received: 06 April 2007
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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