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- Poor machining quality of drillpipe of coal roadway drilling machine and the cause of rupture on case are analysed. 分析了煤矿用坑道钻机钻杆的加工质量问题和现场使用时产生断裂的原因。
- coal roadway drilling machine 煤矿用坑道钻机
- Development of Combined Hydraulic Chuck of Roadway Drilling Machine 坑道钻机组合式液压卡盘的研制
- According to the experiences with rapid drilling in mechanized caving coal roadway, the author analyzes and proposes the measures to improve drilling - speed. 根据多年机掘煤巷快速掘进施工经验进行因素分析并提出了进一步提高快速掘进的措施。
- WISDOM DEEP HOLE DRILLING MACHINE CO., LTD. 慧能深孔机械有限公司。
- HANGZHOU WESTAKE BENCH DRILLING MACHINE CO., LTD. 杭州西湖台钻有限公司。
- The drilling machine can do many thingsbesides drilling holes. 除钻孔之外,在钻床上还可以完成多种工序。
- Existing Problems of Coal Roadway Bolting Technology in Datong Coalmines Group Co. 煤巷锚杆支护技术在同煤集团应用中存在的问题。
- The results show the combined roof trusses has a practical support effect in coal roadway. 研究表明组合桁架锚杆对煤巷具有良好的支护效果。
- Dimond drilling sheet : Suit for various kind of drill machine. 简 介: 金刚石钻片:适用于台钻、进口、国产机械专用设备。
- The drilling machine should not be started while being debugged. 正在调试的钻床不得开动。
- The combined support with cable bolt wire mesh and shotcreting is applied in coal roadway in Xingan Coal Mine of Hegang Mining Industry Group. 鹤岗矿业集团兴安煤矿在煤巷中应用锚索锚杆挂网喷喧支护,取得了较好的技术经济效果。
- In 1997, the Xingtai Mine succeeded in using bolting &boltmesh supporting tech. in coal roadway(supporting the top coal along the bottom). 1997年,邢台矿在全煤(沿底托顶煤)巷道采用锚杆加锚索的支护技术获得成功。
- This new model of drilling machine can bore through solid rock ten metres deep. 这台新型钻机能钻透十米厚的坚固岩石。
- Owing to the the fact that the difficult-to-work seams account for over 90% of these worked by hydromines,tbe coal roadway bolting technique has made slow progress. 由于煤层地质构造复杂,煤厚变化大等难采煤层条件在水采矿区占90%25以上,故水采矿井煤巷钻杆支护技术发展缓慢。
- After he invented the new drilling machine, honors were thrust upon him. 他发明了新的钻机之后,许多荣耀都加在他的身上了。
- After he invented the new drilling machine, honours were thrust upon him. 他发明了新的钻机之后,许多荣耀都加在他的身上了。
- By means of similarity-simulation test the authors have studied the displacement law of surrounding rock in coal roadway supported by the roof trusses,bolt-mesh shoterete and H-beam steel. 通过相似模拟试验,研究煤巷采用组合桁架锚杆、锚架网和工字钢支护时的变形玻坏规律,由此对比分析探讨组合桁来锚杆的支护效果。
- Anchor drilling machine also effects rapidity of anchor bolt support. 锚杆钻机又直接影响到锚杆支护的速度。
- Capable of operating milling machine, drill machine, grinder, lathe machine. 熟练操作铣床;砖床;磨床;车床(其中2总以上)优先考虑.