The Study and Realization of the Trenchless Guide Drilling Trace-designing Software;

Experimental study on fluid of trenchless drilling through fluidized bed

During the process of trenchless construction,it is often inconvenient due to the bit water way matching the pump output inappropriate.

Through introduced the operating principle of guide bit in Trenchless Technology,the stress state of guide bit was analysed adopting ANSYS software and simulation technology.

Currently,horizontal direction drilling(HDD) has been considered as the mainstream in the trenchless technology used for municipal construction,in which the geo-radar and electromagnetic-based underground pipe detectors are widely used to find the distribution of pipes near the construction route so as to avoid destroying the latent buried pipes.

This paper discusses the definition,connotation,research objective,purpose and the characteristics of the new developed subject—trenchless technology.

Based on non-excavation pipe-laying construction on Kailuo High Way of Henan Province, the paper briefly analyzes curved mechanism in drilling horizontal hole and introduces executing method and its practical effect.

The article briefly introduces a non-excavation construction technology for the small-diameter pipeline i.

This article introduced occurred mechanisms of the power plant underground water pipeline leakage,describes various non-excavation repair technology features,introduced the application of high-density polyethylene pipes in Jiaozuo power plant.

Study of automation system of no-dig guided boring track;

Construction Technology and Project Application Studying of No-dig Horizontal Directional Drilling Pipe Paving;

This paper discussed the horizontal directional drilling trace optimization design in no-dig engineering.

In this paper, a way to detect the guide bit track under the complex building is introduced by the way of two curves crossing with the RD 385 In practical projects,the theoretical method has been applied successfully The problem of guide drilling of no dig installation of pipelines in complicated regions is effectively solve

The technology of no dig installation is applied more extensively in recent years The difficulties encountered are more and more,such as drilling pilot hole in hard soil formation,improving the reaming bit in the formation,choosing reaming bit and equipment in soft soil formation,and pulling back bunched pipes from problem section Some solutions for the difficulties in construction are presente

The oriented hole construction technique is key in no dig engineering,it decides the success or defeated of no dig engineering.

Emerging trenchless technology—pipe bursting;

A Topic for the Rock and Soil Mechanics Study in Trenchless Technology of Underground Pipes in City;