井筒防冻,pit shaft antifreeze
1)pit shaft antifreeze井筒防冻
2)heat insulation and freeze protection of mine shaft井筒保温防冻
3)frozen shaft冻结井筒
1.C70,C75 high strength concrete were used to construction of deep unconsolidated layersfrozen shaft.在深厚松散层冻结井筒中采用了C70、C75高强高性能混凝土。
英文短句/例句
1.Rapid Construction Technology of Freezing Well-wide Shaft of New Shanghai No.1 Ventilation Shaft Mine新上海一号矿风井全井冻结井筒快速施工技术
2.Slippery Mold Construct of Internal Shaft Lining in Freezing Shaft on Large Sectio Thick Surface Soil大断面深厚表土层冻结井筒内层井壁滑模施工
3.Technical Analysis of Rapid Excavation of Freezing Saft of YANGYIN Mine"s Main Shaft杨营矿主井冻结井筒实现快速掘砌施工的技术浅析
4.Dynamic Analysis on the Stabality of the Freeze Shaft Lining in Thick Top Soil;深厚表土中的冻结立井井筒稳定性动态分析
5.Application of information construction technology in the deep shaft freezing method信息化施工在深井井筒冻结中的应用研究
6.Increasing Blasting Efficiency of Frozen Rock and Speedingup Shaft Construction提高冻结基岩爆破效率 加快立井井筒施工速度
7.Using Bedrock Freezing for Safe and Rapid Construction of Large-Diameter Shaft大直径井筒全井基岩冻结法安全快速施工
8.The Key Technology of Freezing Repairing Shaft of the 658m Soft Rock Drilling Shaft658m软岩普通法凿井井筒冻结修复关键技术
9.The Simple Discussion on the Safe Construction of Deep Thick Swelling Clay Layer of Vertical Shaft浅谈立井井筒深厚冻结膨胀粘土层的安全施工
10.Quick Construction Technology of Big Section Deep Shaft with Freezing Surface Soil大断面深立井井筒冻结表土段快速施工技术
11.The Construction Technology of the Frozen Air Shaft with Huge-Thick Soil and Major Diameter巨厚表土层大直径立井井筒冻结法施工技术
12.Shaft Slippery Mold Construction of Frosen Liner at Big Section with Deep Thick Surface Soil大断面深厚表土层冻结立井井筒内层井壁滑模施工
13.Application of Liquid Nitrogen Freezing Technology to Water Sealing Rescue in Mine Shaft液氮冻结技术在井筒封水抢险中的应用
14.The Frequent Problems of Freezing Method in Shaft and Their Prevention and Treatment Measures井筒冻结法施工的常见问题及防治措施
15.Research on the Influence of Frost Heave of Frozen Soil to Derrick Footing in Freezing Sinking Shaft;冻结法凿井冻土冻胀对井架基础影响的研究
16.A Non-linear Number Analysis of the Frozen-wall;冻结凿井时冻结壁的非线性数值分析
17.Analysis and Prevention of Freezing Tube Breakage in Deep Shaft Freezing Sinking;深井冻结凿井冻结管断裂原因分析及防治技术
18.In-Situ Measurements and Analysis of Frost-Heave Pressure Inside and Outside the Ice Wall During Freeze Sinking冻结法凿井冻结壁内外部冻胀力的工程实测及分析
相关短句/例句
heat insulation and freeze protection of mine shaft井筒保温防冻
3)frozen shaft冻结井筒
1.C70,C75 high strength concrete were used to construction of deep unconsolidated layersfrozen shaft.在深厚松散层冻结井筒中采用了C70、C75高强高性能混凝土。
4)freezing shaft冻结井筒
5)anti-freezing for ore well竖井防冻
6)deep frozen shaft深冻结井筒
延伸阅读
井筒钻进井筒钻进shaft drilling{Ingtong zuonj旧井筒钻进(shaft drilling)用竖井钻井法掘进时，利用钻井设备钻凿竖井井筒的作业。井筒钻进、洗井和支护是竖井钻井法掘进的三大工序，其中井筒钻进是主体工序。它包括钻井准备工作、钻凿、防偏和测斜、故障处理等，所用时间占总工期的80%一85%。准备工作在此期间应完成的工作有:平整井场，保证水、电管线及道路和通讯的畅通，钻凿井筒的检查孔，建立工业和生活福利设施，检查并安装钻井设备，制备洗井泥浆，进行综合试运转等。准备工作所需时间取决于钻井工程的规模、设备大小、施工组织的合理程度。钻凿主要工作有:下钻、起钻、接长钻杆和钻进。下钻包括下钻头、钻头就位、接钻杆、下放钻杆钻头、接风管和混合器、接主动钻杆等工作。起钻按下钻相反的顺序进行。当主动钻杆钻到最低位置时，需接一根钻杆(又称加尺)，这时要停止钻进和停止泥浆循环，把主动钻杆提出转盘，并提出风管，接长一根钻杆，重新安上风管和主动钻杆，继续钻进，依此循环不已，直至钻完整个井筒。钻进时要根据地质条件正确选择合理钻进参数，注意观察转盘、钻具运转和排碴等情况。防偏和测斜采用钻井法掘进井筒时，对井筒偏斜率有严格要求:当钻井深度小于30om时，允许偏斜率不得超过0.1%;钻深为300~4O0m时不得超过32omm，401一SOom时不得超过400mm，501~6oom时不得超过48Omm。因此在钻进过程中必须注意防止偏斜过大。井筒偏斜的原因很多，主要有钻井设备安装不当、钻压过大、冲击层中有卵石、工作面岩层软硬不均等。针对上述原因要采取相应的有效防偏措施，及时测量井筒偏斜率。当偏斜率超过允许值时，要及时纠偏。中国矿山常用的钻井测井仪有CJ一501型，CSX-731型和超声波式等。这类测井仪的测量范围是，井筒直径小于10m，井筒深度小于50om，测量精度为l%。测井仪所适应的泥浆，其粘度要小于25Pa·s，密度小于1·39/em3，温度在10一35℃。故障处理钻井时常见的故障有泥包钻头，跳钻，卡钻，掉钻头、刀具和风管等，井筒片帮或坍塌。一旦出现这些故障，要采取相应的措施予以处理。 (何修仁)
