煤矿采空区地面沉陷是永城矿区典型、突出的矿山地质环境问题。
The surface subsidence above coalmine gob area is a typical and serious geological environment problem in Yongcheng mining area.
经XRD证实永城煤矸石是砂质泥岩。
The fact that coal mine refuse of Yongcheng is sandy mudstone was confirmed by XRD.
中国大陆河南省商丘市永城市的邮政编码是 476600 。
The postcode of Yongcheng City, Shangqiu City, Henan Province, China is 476600.
中国大陆河南省商丘市永城市的邮政编码是 476600 。
The postcode of Yongcheng City, Shangqiu City, Henan Province, China is 476600.
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