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Construction method for pile foundation drilling of gravel stratum with floating pebble layer

A pebble layer and hole-forming technology, which is applied in infrastructure engineering, drilling equipment and methods, sheet pile walls, etc., can solve the problems of slow construction period and poor hole-forming quality, save economic costs and reduce pile foundation construction. The effect of cycle, saving time and cost

Inactive Publication Date: 2019-03-19
THE THIRD CONSTR CO LTD OF YNJG
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Problems solved by technology

[0005] In view of the above problems, the present invention proposes a hole-forming construction method for a pile foundation in a sandy conglomerate layer containing a floating pebble layer. By using two different hole-forming methods to form holes in the same pile hole, it solves the problem of complex geological conditions in the past. A single hole-forming method brings problems such as slow construction period and poor hole-forming quality

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  • Construction method for pile foundation drilling of gravel stratum with floating pebble layer
  • Construction method for pile foundation drilling of gravel stratum with floating pebble layer
  • Construction method for pile foundation drilling of gravel stratum with floating pebble layer

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Embodiment Construction

[0046] The specific implementation of the construction method of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] The technical scheme of the present invention is specifically as follows:

[0048] 1. Buried protective tube, including:

[0049] 1) The protective tube is made of steel plate coil;

[0050] 2) Loft, dig pits, and put in steel protective tube according to the center of the pile position;

[0051] 3) Buried protection tube;

[0052] 2. Mud preparation, specifically including:

[0053] 1) Mud tanks are set up on site, including sedimentation tanks for slurry return and mud storage tanks;

[0054] 2) Wall protection mud regeneration treatment adopts gravity sedimentation and slag removal method, and the mud is transported to the mud storage tank after sedimentation and purification in the sedimentation tank for slurry return;

[0055] 3. The percussion drill drills into the hole, specifically including:

[0056] 1) Inject ...

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Abstract

The invention discloses a construction method for pile foundation drilling of a gravel stratum with a floating pebble layer. Drilling of a pile foundation adopts two pore-forming methods, namely percussion drilling and rotary drilling, at the same time. The problems are solved that as only one pore-forming method is adopted during pile foundation drilling of the gravel stratum with the floating pebble layer under the complex geological condition, the construction period is long, and the pore-forming quality is poor. The incidence of deviated holes and inclined holes is effectively reduced during pore forming of the floating pebble layer as the surface layer, a rotary drilling machine is used for the deep layer, the hole-enlarging rate is effectively reduced, the pore-forming quality of thepile foundation is more excellent, and the work efficiency is higher.

Description

Technical field [0001] The invention discloses a construction method for forming a hole in a pile foundation of a sandy conglomerate layer containing a boulder layer, belonging to the technical field of methods for forming a hole in a pile foundation. Background technique [0002] With the accelerated pace of infrastructure construction, the scale of highway construction in recent years has continued to grow, and more highways are routed more smoothly, which requires a large number of bridges and tunnels to span deep valleys and mountains, especially the amount of bridge engineering is more than previous designs More, there are often bridges and super bridges, high piers with pile groups and other characteristics. The number of pile foundations, pile diameters, and depths are more than those of previous highway bridges. How to complete the pile foundation construction quickly and efficiently is the ability of the entire bridge The key to completion as scheduled. [0003] At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B1/00E21B3/00E21B21/00E02D5/38
CPCE02D5/38E21B1/00E21B3/00E21B21/00
Inventor 丁恒徐云顺王位王长录许艳苗晁树生孔德行高兴成李奇李志祥郭龙哈斯巴根
Owner THE THIRD CONSTR CO LTD OF YNJG
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