Deformation of mining caving zone grouting compound rock under overlying strata pressure |
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Authors: | Yu Yang Xie-xing Miao Wen-sheng Liu Xing-hua Li |
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Affiliation: | (1) The Research Center of Mining Damage and Control Engineering, Liaoning Technical University, Fuxin, 123000, China;(2) School of Mines, China University of Mining & Technology, Xuzhou, 221008, China |
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Abstract: | To solve the problem of surface subsidence caused by mining, the main method is to reasonably process coal mining space. “Mining
caving zone high-pressure grouting pulverized coal ash hydromass controlling roof and overlying strata movement” technology
is one of processing methods. After grouting pulverized coal ash hydromass in mining caving zone, formed one kind of special
material which is used to support roof and effectively control the subsidence of overlying strata. For the accurate calculation
of roof mining subsidence at grouting state, based on the characteristics of such materials, established its constitutive
equation based on certain assumptions, gave deformation calculation method when the compound rock supports overlying strata,
lay foundation for the actual calculation of subsidence of overlying strata after grouting and the promotion of mining caving
zone grouting technology. |
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Keywords: | mining caving zone grouting compound rock compression quantity overlying rock controlling |
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