The paper study thin and thick seam with steep dip mining technique of 7417 fully mechanized top-coal caving face,in Zhangshuanglou coal mine,introduce to coal mining method and equipment anti-skid successful experience,provide reliable use for reference mining of resemble face.
通过对张双楼煤矿7417综采放顶煤工作面急倾斜较薄厚煤层开采技术的综合治理研究,系统的介绍了采煤方法、设备防倒防滑的成功经验,可供相似复杂条件下综放面的安全开采借鉴。
2 Coal Mine, systematically introduce the successful experiences in coal mining method, equipment model selection mating, hyudraulic support anti-skid measures.
通过对国投新集能源股份公司二矿1113107综采面,在推覆体下大倾角、厚软煤层开采技术的综采技术研究,系统地介绍了采煤方法、设备选型配套、液压支架防倒防滑措施的成功经验,可为相似复杂条件下综采面的安全开采提供借鉴经验。
It was also evaluated the concentration of treating solution,baking time and baking temperature had effect on water-and oil-proofing.
以全氟辛酸和氨基硅油为原料,合成了一种氟烷基聚硅氧烷防水防油剂,用IR、NMR对其结构进行了表征。
Fire and explosion prevention in railway tunnel is of great significance for ensuring good tunnel condition and traffic safety.
铁路隧道防火防爆对于确保隧道完好、行车安全具有重要意义。