Minimally-invasive non-excavation pipe jacking and pull technology
A trenchless, top-pulling technology, applied in pipeline laying and maintenance, pipes/pipe joints/fittings, machinery and equipment, etc., can solve problems such as increasing costs, affecting traffic, and affecting people's livelihood, and achieving the effect of reducing construction costs
Inactive Publication Date: 2013-11-20
JIANGSU WODI CONSTR ENG
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The invention discloses a minimally-invasive non-excavation pipe jacking and pull technology which comprises the following steps that 1, a working well and a receiving well are excavated; 2, minimally-invasive non-excavation drilling equipment is erected in the working well, and a hole is drilled towards the receiving well by a guide drilling bit till the drilling bit penetrates into the receiving well; 3, the guide drilling bit of the minimally-invasive non-excavation drilling equipment is dismounted, a back dragging reamer in a preset specification is mounted on a drilling rod of the minimally-invasive non-excavation drilling equipment, the minimally-invasive non-excavation drilling equipment is started for back dragging, and back dragging reaming begins till the back dragging reamer reams and is moved to the working well; and 4: (1), the back dragging reamer is dismounted, the minimally-invasive non-excavation drilling equipment is started, and the drilling rod passes through to the receiving well; (2), a pipe jacking machine is arranged in the receiving well; (3), a cement pipe is put into the receiving well, the drilling rod is sleeved with the cement pipe in a penetrating manner, and a pipe dragging device is mounted; and (4), the minimally-invasive non-excavation drilling equipment is started for the back dragging, the cement pipe is dragged by the pipe dragging device, and the pipe jacking machine is started and jacks the cement pipe into the hole till the cement pipe is dragged and jacked to a preset position.
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