Method for forecasting slurry performance in emulating horizontal directional drilling construction and its experimental device

A horizontally oriented and in-construction technology, applied in the field of construction engineering and trenchless horizontal directional drilling construction, can solve the problems of single mud, guide construction, and large difference, so as to reduce construction cost, shorten construction period, and reduce construction exploration. Effect

Active Publication Date: 2007-10-24
SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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  • Application Information

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Problems solved by technology

However, these test methods can only test a single performance index of the mud, and cannot directly reflect the actual situa...

Method used

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  • Method for forecasting slurry performance in emulating horizontal directional drilling construction and its experimental device
  • Method for forecasting slurry performance in emulating horizontal directional drilling construction and its experimental device
  • Method for forecasting slurry performance in emulating horizontal directional drilling construction and its experimental device

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Experimental program
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Effect test

Embodiment

[0032] Accompanying drawing 3, Fig. 4 are the experiment result that same kind of mud is implemented in clay and sandy soil.

[0033] From accompanying drawing 3, as can be seen in Fig. 4, in the drilling process, the land subsidence that clay produces is obviously littler than the ground subsidence that sandy soil produces. In clay, the maximum ground subsidence is 0.6mm during the drilling process of Φ60mm drill bit, while in sandy soil, the maximum ground subsidence is 1.7mm, which is about 3 times that of clay.

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Abstract

A method which can forecast slurry performance in simulating horizontal directional drilling construction and its experimental device belong to the construction engineering technical field. It is characterized by: accessing construction parameters through setting construction site model. Its installation is: a test chamber is laid on a shrink drilling bit horizontally; driving chains fastened on hand handle is occluded with hollow driving screwed pipe; the screwed pipe is connected with slip casting pipe and storage kettle; the device is equipped with displacement gauge, pressure and torque sensor; the top of the chamber is laid on a flat cross piece, the chamber is equipped with magnetic fixed mount under its horizontal and longitudinal directions in equal distances separately, the fixed mount is equipped with displacement gauge moving with soil layer; the detecting devices are connected with computer through static state strain gauge. After the invention is carried out, the performance of slurry stable pore wall and the protected soil layer can be acquired through indoor laboratory test, the guiding opinion can be presented for the construction method, so the site construction searching is reduced, the construction period is shortened and the construction cost is reduced, the method is a practical invention.

Description

technical field [0001] The invention belongs to the field of construction engineering, specifically relates to the technical field of trenchless horizontal directional drilling construction. Background technique [0002] Horizontal directional drilling technology first appeared in the 1970s. It is a construction method combining traditional road drilling and oilfield directional drilling technology. At present, it has been widely used in industries such as natural gas, tap water, electric power and telecommunications, especially in environmental protection. And municipal pipe network reconstruction and expansion projects and large-scale pipeline crossing river projects show its unique advantages. Its working process is guided and detected by computer control. First, a pilot hole with the same design curve is drilled, and then Expand the guide hole, drag the product pipeline back into the enlarged guide hole, and complete the construction process o...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B49/00E21B7/04
Inventor 顾利军范明星陈志超赵国强杨继范
Owner SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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