化学注浆在兴隆庄煤矿西风井深井井筒微裂隙防渗中的应用
화학주장재흥륭장매광서풍정심정정통미렬극방삼중적응용
Application of Chemical grouting in leakage-prevention of fine fissure in deep well in west ventilation mine of Xinglong-zhuang coal mine
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