A drilling auxiliary device for inclined rock face and its construction method
An auxiliary device and inclined rock technology, applied in drilling equipment and methods, underwater drilling, directional drilling, etc., can solve the problems of high-strength inclined rock surface drilling difficulties, pile foundation drilling into inclined holes, etc., and achieve improved Drilling efficiency, easy installation and removal, and simple structure
Active Publication Date: 2021-08-10
THE 2ND ENG CO LTD MBEC +1
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Problems solved by technology
[0004] The embodiment of the present application provides a drilling auxiliary device for inclined rock faces, so as to solve the problems in the related art that the drilling of high-strength inclined rock faces is difficult and the pile foundation drills easily inclined holes.
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[0044] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0045] The embodiment of the present application provides a drilling auxiliary device for inclined rock faces, which can solve the problems of difficult drilling on high-strength inclined rock faces and the problems of pile foundation drilling into easily inclined holes.
[0046] like figure 1 As shown, the auxiliary drilling device fo...
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The present application relates to a drilling auxiliary device for inclined rock faces and a construction method thereof, and relates to the technical field of bridge foundation construction. The device includes at least one guide sleeve, and the guide sleeve includes: a plurality of first drilling pipes , arranged at equal intervals to form at least two concentric rings; a plurality of first dense hole tubes, distributed on multiple semi-circular rings on the same side of the largest ring outer diameter, and adjacent to two first drilled hole tubes There is a first dense hole pipe between them; the wrapping assembly includes an outer annular plate and an inner annular plate, and the outer annular plate and the inner annular plate of each wrapping assembly are respectively sleeved on the outer circumference and inner ring of a ring. Circumference: in adjacent hemming components, a first support structure for supporting and fixing is provided between the inner annular plate of the outer ring and the outer annular plate of the inner ring. The drilling auxiliary device and its construction method of the present application can effectively reduce the impact of high-strength inclined rock layers on drilling construction, avoid inclined holes, and significantly improve drilling efficiency and hole-forming quality of pile foundations.
Description
technical field [0001] The application relates to the technical field of bridge foundation construction, in particular to an auxiliary drilling device for inclined rock faces and a construction method thereof. Background technique [0002] At present, under deep water conditions, bored piles are generally operated by setting up a water platform, and the number of pile foundations for the main pier of a bridge in water is large, requiring multiple machines to drill at the same time. When the riverbed cover layer is in high-strength block rock geological conditions, it is easy to cause insufficient anchorage depth for the above-water platform, which greatly limits the load that the platform can bear. If large and heavy drilling machines are used for construction, the water platform needs to be reinforced, which not only greatly increases the project cost, but also has a long construction period. [0003] In addition, in the construction of large-diameter bored piles where the...
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IPC IPC(8): E21B7/04E21B7/12
CPCE21B7/043E21B7/12
Inventor 巩明潘剑峰易旺艾侠郝闯周航李梦乐李红晓梅前前孙浩然黄中华
Owner THE 2ND ENG CO LTD MBEC