白垩系地层煤矿立井冻结壁的力学特性及温度场研究

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Abstract The physico-mechanical characteristics of cretaceous rocks in frozen conditions were studied with the laboratory testing，the field measurement and the finite element simulation. The frozen mechanism of the shaft wall during the period of shaft excavation was discussed；and the variation and causes of freezing pressure in the frozen wall in the cretaceous layer were analyzed in detail. The measured temperatures on the frozen wall and in the thermometer holes were compared with the simulated results yielding the influence range of heating of the concrete hydration on the frozen wall to be 440–480 mm.

Key words： mining engineering cretaceous strata thermal and mechanical properties frozen pressure temperature field

Received: 28 April 2014

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http://www.rockmech.org/EN/Y2014/V33/I09/1873

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