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High pressure rotary jet grouting pile construction method for power transmission line iron tower pile foundation construction

A technology for transmission line towers and high-pressure rotary jetting piles is applied in basic structure engineering, sheet pile walls, buildings, etc., which can solve the problems of easily polluting the environment, unsuitable soil quality, and high cost, avoiding environmental pollution and requiring less construction land. , the effect of small vibration

Inactive Publication Date: 2013-03-06
STATE GRID CORP OF CHINA +1
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AI Technical Summary

Problems solved by technology

The construction occupies less land, has little vibration and low noise, but it is easy to pollute the environment and the cost is high. It is not suitable for special soil that cannot solidify the sprayed slurry.

Method used

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Embodiment 1

[0031] A construction method of high-pressure rotary grouting piles for power transmission line iron tower pile foundation construction, which is specifically carried out according to the requirements of the following steps:

[0032] 1) Pile position measurement: according to the requirements of the drawings, when determining the pile position, it should be accurate and rechecked, and the pile position should be driven into wooden piles or short steel bars for marking;

[0033] 2) Drilling rig installation: After the drilling rig is installed, it must be stable and upright, and placed on the calibrated pile position, so that the center of the drill bit is aligned with the center of the pile, and the deviation of the pile position must not exceed 20mm. It is greater than 1%; during the drilling process, if the hole inclination is found to be too large after inspection, the levelness of the pile driver and the verticality of the drill pipe should be adjusted in time, and the dril...

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Abstract

The invention discloses a high pressure rotary jet grouting pile construction method for power transmission line iron tower pile foundation construction. The high pressure rotary jet grouting pile construction method is specifically performed according to the following steps of: (1) measuring a pile placement position; (2) mounting a drill; (3) drilling; (4) arranging a pile driver in place; (5) performing jet testing on the ground; (6) preparing slurry; (7) performing rotary jet grouting; (8) performing backfill grouting; and (9) washing grouting pipe machine equipment by using clear water. According to the high pressure rotary jet grouting pile construction method for the power transmission line iron tower pile foundation construction, a continuously lap-jointed cement reinforcing body can be formed; and the method has the prominent advantages of small occupation of land for construction, small vibration, low noise and the like. Meanwhile, attention is required to be paid to environmental pollution, the construction cost is controlled, and the method is prevented from being used under the special soil condition that the jetted slurry cannot be solidified as much as possible.

Description

Technical field: [0001] The invention relates to the technical field of construction and application of high-pressure rotary grouting piles, and in particular provides a construction method for high-pressure rotary grouting piles for pile foundation construction of power transmission line iron towers. Background technique: [0002] In the prior art, the high-pressure rotary grouting pile uses a high-pressure rotating nozzle to spray cement slurry into the soil layer and mix it with the soil to form a continuously lapped cement reinforcement. The construction occupies less land, has less vibration and lower noise, but it is easy to pollute the environment and the cost is high. It is not suitable for special soil that cannot solidify the sprayed slurry. [0003] The scope of application of high-pressure rotary grouting piles is as follows: [0004] (1) The high-pressure jet grouting method is suitable for treating foundations such as silt, silty soil, flow plastic, soft plast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/46E02D15/04E02D27/42
Inventor 王玲夏泳杜科
Owner STATE GRID CORP OF CHINA
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