About Zhang Yuheng
About 西山煤電集団有限公司西銘鉱,山西太原030052
About Jixie Guanli Kaifa
About coal
About mining
About water intake(engineering)
About mining operations
About sieve tube
About hydrogeology
About borehole
About geology(geological feature)
About upper layer
About 作業面
About 貯水量
About Damage to plant and animal life
About Mine drainage in general
About 山
About 採水
About ふるい管
About 応用