您要查找的是不是：
- coal roadway excavation 煤巷掘进
- The roadway excavation and supporting are crucial techniques in mining engineering. 巷道掘进与支护是采矿工程的技术关键。
- 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。
- 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。
- When implementing the smooth blasting in small-sectional roadway excavation under complex geologic conditions,the blasting parameters and the implementation technology have a certain particularity. 在复杂地质条件小断面巷道掘进中实施光面爆破,其爆破参数和施工工艺有一定的特殊性。
- 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。
- 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。
- 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。
- quick constructing roadway excavation 快速成巷
- 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。
- Smooth Surface Blasting Technology in Mine Rock Roadway Excavation 在岩石巷道掘进中的光面爆破技术
- Application of include angle orientation in roadway excavation 夹角给向法在巷道掘进中的应用
- The Trial of bolt-mesh support on coal roadway 煤巷锚梁网支护试验
- Testing method of bolting support in coal roadway 煤巷锚杆支护的监测方法
- Coal roadway influenced by mining 采动煤巷
- bolting with wire mesh technique for coal roadway 煤巷锚网支护技术
- Technology of Roadway Excavation and Supporting in Loose and Cractured Ore Body 松软破碎矿体巷道掘进与支护技术
- Application of Denser Grouting in Coal Roadway Maintenance 挤密注浆在煤巷修护中的应用
