Comprehensive gas control techniques and practice of extra - thick seams with low gas permeability in luling coal mine 芦岭煤矿特厚低透气性煤层瓦斯综合治理技术与实践
Preventing roof fall in fully - mechanized caving winning roadway of thick seam in geological structure complicated coal mine 地质构造复杂矿井厚煤层综放开采巷道防冒顶
Comprehensive control technology for ultra high gas emission from fullymechanized caving face in spontaneous combustion thick seam 易燃厚煤层综放面特大瓦斯涌出综合治理技术
Applying pressure - sharing ventilation technology to control gas in fully - mechanized sublevel caving faces of edge thick seam 均压通风技术治理瓦斯在急倾斜厚煤层综放工作面的应用
Fast equipment removing technology of fully mechanized top coal caving mining face in two hard and special thick seams of pingshuo mining area 平朔矿区两硬特厚煤层综放工作面快速回撤工艺
Key technologies of hydraulic powered caving supports for fully mechanized caving mining face in two hard and thick seams in pingshuo mining area 平朔矿区浅埋深两硬特厚煤层综放支架关键技术
Gone was the leaden canvas , the lace up front , the long stovepipe legs , the double thick seams and buttons that hurt when you paddled . nothing of the old was left so they started from scratch 沉重的帆布缀花边的前部长烟囱似的腿部，还有划水时会把人弄痛的两条厚接缝和钮扣，这些累赘统统予以抛弃。
Abstract : the article analyzed the thick seam duplicate to pick has the spontaneous combustion influence factor , introduced the multi - association two ore first well used the synthesis measure , enhanced the mine shaft fire area fire fighting efficiency the experience 摘要：文章分析了厚煤层复采发生自然发火的影响因素，介绍了多联二矿一号井采用综合措施，提高井下火区灭火效率的经验。
