Treatment Technique for Axis Deviation in a Curved Pipe Jacking Project Shallow Buried

ICPTT 2011 ◽  
2011 ◽  
Author(s):  
Hui Liu ◽  
Zhuanyun Yang
Keyword(s):  
Treatment Technique ◽  
Axis Deviation ◽  
Curved Pipe ◽  
Pipe Jacking

Guiding Survey Technology for Long Curved Pipe Jacking

2013 ◽  
Vol 639-640 ◽  
pp. 247-250
Author(s):  
Shao Tang Liu ◽  
Guo Rong Pan ◽  
Hui Feng Zhang
Keyword(s):  
Three Dimensional ◽  
Reference Points ◽  
Transformation Model ◽  
Long Distance ◽  
Time Saving ◽  
Curved Pipe ◽  
Survey System ◽  
Guide System ◽  
Pipe Jacking ◽  
Datum Transformation

The paper discusses guide survey system in long distance curved pipe jacking, presents a three-dimensional datum transformation model to determine the orientation of jacking pipe，The unitary principle and the new navigating method are introduced and the methods accuracy and variance are analyzed. The intelligence guide system is carried through easily associate with total station. The mathematical model, the operation principle, the hardware realization of extra long pipe jacking automatic guidance are introduced. Practice shows that all the reference points are used more efficiently in the new model than in the general model, and the surveying and navigating system gets enormous time-saving against conventional methods

Steel Curved Pipe Jacking Construction under Complicated Conditions for a Curved Pipe Roof

2016 ◽  
Author(s):  
Peng Zhang ◽  
Baosong Ma ◽  
Cong Zeng ◽  
Hongming Xie ◽  
Daowei Wang ◽  
...  
Keyword(s):  
Curved Pipe ◽  
Pipe Jacking ◽  
Complicated Conditions

Key techniques for the largest curved pipe jacking roof to date: A case study of Gongbei tunnel

2016 ◽  
Vol 59 ◽  
pp. 134-145 ◽  
Author(s):  
Peng Zhang ◽  
Baosong Ma ◽  
Cong Zeng ◽  
Hongming Xie ◽  
Xuan Li ◽  
...  
Keyword(s):  
Curved Pipe ◽  
Pipe Jacking ◽  
Key Techniques

On the Behavior of a Stuck Curved Pipe-Jacking

ICPTT 2011 ◽  
2011 ◽  
Author(s):  
K. J. Shou ◽  
J. H. Yen
Keyword(s):  
Curved Pipe ◽  
Pipe Jacking

Diagnosis and Ablation of Fascicular Tachycardia

2011 ◽  
Vol 3 (1) ◽  
pp. 67
Author(s):  
Akihiko Nogami ◽  
Keyword(s):  
Ventricular Tachycardia ◽  
Right Bundle Branch Block ◽  
Axis Deviation ◽  
Exit Site ◽  
Rare Form ◽  
Bundle Branch Block ◽  
Diagnosis And Therapy ◽  
Narrow Qrs ◽  
Left Posterior ◽  
Qrs Morphology

Verapamil-sensitive fascicular ventricular tachycardia (VT) is the most common form of idiopathic left VT. According to the QRS morphology and the successful ablation site, left fascicular VT can be classified into three subgroups: left posterior fascicular VT, whose QRS morphology shows right bundle branch block (RBBB) configuration and superior axis (common form); left anterior fascicular VT, whose QRS morphology shows RBBB configuration and right-axis deviation (uncommon form), and upper septal fascicular VT, whose QRS morphology shows narrow QRS configuration and normal or right-axis deviation (rare form). Posterior and anterior fascicular VT can be successfully ablated at the posterior or anterior mid-septum with a diastolic Purkinje potential during VT or at the VT exit site with a fused pre-systolic Purkinje potential. Upper septal fascicular VT can also be ablated at the site with diastolic Purkinje potential at the upper septum. Recognition of the heterogeneity of this VT and its unique characteristics should facilitate appropriate diagnosis and therapy.

Sign in / Sign up

Export Citation Format

Share Document