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| Study on Checking Hydraulic Support Height Method with Working Face Recovery Rate |
| YAN Jian-guo, WANG Li-xin, HU Cheng-jun |
| China Coal Handan Design Engineering Corporation Ltd., Handan 056031, China |
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Abstract In order to guarantee the working face recovery rate complying with relevant regulations, according to the mining face stoping rate calculation method, in combination with hydraulic support supporting height and the analysis of the working face mining height broken relationship, checking hydraulic support height method with working face recovery rate was put forward, which reduced the support selective blindness and ensured the working face recovery rate complying with relevant regulations.
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