collar excavation是什么意思

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This text introduced the practice method of the box permanent steel petroleum derrick shaft sinking in the construction of vertical shaft pit shaft.

在立井井筒建设中,我们在原设计的基础上,对箱形永久钢井架凿井的实际方法作了改进。

Monitoring for sidewall safety in deep alluvium freezing shaft sinking engineering is discussed in the paper.

重点介绍了深厚表土中冻结法凿井的井壁安全监测技术,利用现代计算机控制和远程通信技术,通过电话网和调制解调器,借助预埋的传感器,经过信息的分析和反演,实现了冻结法凿井中对井壁的远程全自动安全监测。

Through the practice of Guqiao auxiliary shaft construction, this paper discusses how to increase the shaft sinking velocity with the existing technology and equipment.

如何利用国内现有的凿井技术、凿井设备提高建井速度,本文通过对顾桥副井的建井实例进行了深入的分析探讨。

Shaft sinking winch

GB/T15112-1994凿井绞车

Experience on the shrink shaft drilling construction reserve period

缩短立井井筒凿井施工准备期的经验

Kind-Chaudron process

金特－肖德隆凿井法

construction survey for conventional shaft sinking method

普通凿井法施工测量

construction survey for special methods of shaft sinking

特殊凿井法施工测量

Design Optimization of Drilled Shaft Lining Structure in 1000m Deep Shaft

千米深井钻井法凿井井壁结构设计优化

The Present Situation and the New Developing Trend of 1000m Deep Shaft Sinking Technology

千米深井凿井技术现状及发展新动向

Desigh of Centralized Control System of Sinking Hoist in Shaft Construction

立井施工凿井绞车集中控制系统设计

On the Derrick Installation of ShaftⅣ_G In main Shaft of a Coalmine

浅谈塔然高勒煤矿主井IV_G凿井井架安装

Freeze Sinking Sidewall's Stress Analysis Considering Damage under Complicated Load;

复杂荷载下冻结凿井井壁损伤应力分析

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

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

The Key Technology of Freezing Repairing Shaft of the 658m Soft Rock Drilling Shaft

658m软岩普通法凿井井筒冻结修复关键技术

Frozen method applied in excavation of vertical shaft of iron ore mine

冻结法凿井技术在铁矿山竖井中的应用

Application of Waste Drilling Mud Treatment Technology for Mine Full Face Drilling

钻井法凿井废弃泥浆处理技术的研究应用

New construction technology of setting large steel-structure shaft frame during shaft sinking

凿井期间起立大型钢结构井架施工新技术

Gangue Vertical Shaft Sinking Mechanization Equipment and Technology Application to Xintie Coal Mine

新铁煤矿矸石立井凿井机械化装备与技术应用

Safe and Rapid freezing Process in Deep Impact Layer of Guqiao Main Shaft

顾桥主井厚冲积层冻结法凿井施工技术