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A construction method of vibrating flat roller circular roller compaction

A construction method and technology in the direction of circulation, applied in filling, infrastructure engineering, construction, etc., can solve the problems of large impact on the dam filling period, low qualification rate of one-time rolling ratio, and poor quality of rolling surface. , to achieve the effect of ensuring the overall construction period, good visual quality and high pass rate

Active Publication Date: 2018-11-09
SINOHYDRO BUREAU 5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The dam of the Lianghekou Hydropower Station is a gravel-soil rock-fill dam with a straight core wall. The rock-fill materials for the dam body are divided into the upstream rock-fill zone I, the downstream rock-fill zone I, and the upstream rock-fill zone II. Use a single-vibration flat roller to overlap 20cm low-frequency and high-vibration one-time rolling for 8 times. Digital dam monitoring shows that the pass rate of one-time rolling ratio (calculated according to the rolling area ratio) is about 80% on average; after increasing the lap width, That is, single-vibration flat roller lapped 30cm low-frequency high-vibration one-time rolling 8 times rolling times digital dam monitoring shows that the pass rate of one-time rolling ratio (calculated according to the rolling area ratio) is about 86% on average, and the design of this project requires stacking The qualified rate of stone rolling is over 95%, and a lot of supplementary rolling work is required, which affects the construction period and the economy is relatively poor; at the same time, there are deep rolling traces on the rolling surface after the on-site rolling is qualified, reaching about 15cm, which is qualified The perceived quality of the rolling surface is relatively poor; the existing rolling method has deep rolling marks on the rolling surface, and at the same time, there is a problem that the pass rate of the first rolling ratio is low, resulting in a large number of follow-up repair work, resulting in serious additional Economic loss, which has a great impact on the overall filling period of the dam

Method used

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  • A construction method of vibrating flat roller circular roller compaction
  • A construction method of vibrating flat roller circular roller compaction
  • A construction method of vibrating flat roller circular roller compaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, in this embodiment, a is 5.7m, K is 6, n is 3, g is 1, and s is 8. The rolling surface that will be rolled on site is marked with lime at intervals of a. After the line is finished, the rolling method is as follows:

[0025] 1# The starting point coordinates of vibrating flat rolling is (0, 0), rolling starts in the y-axis direction, the rolling base of vibrating flat rolling is 2, and the overlap width is 30cm; cycle in the x-axis direction, rolling to the edge of the construction area That is, after the position (18a, 0), turn back to the position of the starting point coordinates, continue rolling in the y-axis direction, and rolling until the starting point coordinates (6a, 0) of 2# vibrating flat rolling, the cycle route is 1.

[0026] 2# The starting point coordinates of vibrating flat rolling is (6a, 0), and rolling is started in the y-axis direction. The rolling base of vibrating flat rolling is 2, and the overlap width is 30cm, and rolling...

Embodiment 2

[0034] Such as figure 2 As shown, in this embodiment, a is 5.7m, K is 4, n is 4, g is 1, and s is 10; the rolling surface that will be rolled on site is marked with lime at intervals of a. After the line is finished, the rolling method is as follows:

[0035] 4# The starting point coordinates of vibrating flat rolling are (0, 0), starting rolling in the y-axis direction, the rolling base of vibrating flat rolling is 2, and the overlap width is 30cm; cycling in the x-axis direction, rolling to the edge of the construction area That is, after the position (18a, 0), turn back to the origin (0, 0), continue to cyclically roll in the y-axis direction, and roll to the starting point coordinate (4a, 0) of the 5# vibrating roll. The cycle route is 4.

[0036] 5# The coordinates of the starting point of the vibrating flat rolling are (4a, 0), and the rolling starts in the y-axis direction. The rolling base of the vibrating flat rolling is 2, and the overlap width is 30cm. The rolling to th...

Embodiment 3

[0046] Such as figure 1 As shown, in this embodiment, a is 5.7m, K is 6, n is 3, g is 2, and s is 10; the rolling surface that will be rolled on site is marked with lime at intervals of a. After the line is finished, the rolling method is as follows:

[0047] 8# The coordinates of the starting point of vibrating flat rolling are (0, 0), starting rolling in the y-axis direction, the rolling base of vibrating flat rolling is 2, and the overlap width is 30cm; cycling in the x-axis direction, rolling to the edge of the construction area That is, after the position (18a, 0), turn back to the position of the starting point coordinates, continue rolling in the y-axis direction, and rolling until the starting point coordinates (12a, 0) of 10# vibrating flat rolling, the cycle route is 8.

[0048] 9# The coordinates of the starting point of the vibrating flat rolling are (6a, 0), and the rolling starts in the y-axis direction. The rolling base of the vibrating flat rolling is 2, and the ove...

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Abstract

The invention discloses a circulating rolling construction method for smooth drum vibratory rollers. The circulating rolling construction method comprises the following steps of: A, defining a construction area; B, marking in the construction area; C, putting the smooth drum vibratory rollers; D, performing circulating rolling in a mode that travelling directions of the smooth drum vibratory rollers are in the y-axis direction, and circulating directions of the smooth drum vibratory rollers are in the x-axis direction; returning to a starting point to continuously perform circulating construction when the circulating direction of a m-th smooth drum vibratory roller reaches edge of a rectangular construction area until coordinates, in the x-axis direction, of the m-th smooth drum vibratory roller reaches the starting point of the (m+g)-th smooth drum vibratory roller; entering a second period when (m+g) is greater than n until coordinates, in the x-axis direction, of the (m+g)-th smooth drum vibratory roller reach the starting point of the (m+g-n)-th smooth drum vibratory roller for a second time, wherein m is 1, 2, 3 to n, and g is a natural number, and is smaller than n. The circulating rolling construction method is good in rolling surface appearance quality, is high in once rolling proportion qualification rate, can be applied to various kinds of earth-rock dam engineering construction, and is less in rolling supplementing work.

Description

Technical field [0001] The invention relates to a rolling construction method, in particular to a vibrating flat rolling cyclic rolling construction method. Background technique [0002] The dam of Lianghekou Hydropower Station is a gravel-soil straight-core wall rockfill dam. The rockfill materials of the dam body are divided into upstream rockfill zone I, downstream rockfill zone I, and upstream rockfill zone II; the rockfill materials of the dam project of Lianghekou Hydropower Station are rolled according to conventional methods Use single vibration flat roller to overlap 20cm low frequency and high vibration, 8 times of rolling at one time. Digital dam monitoring shows that the pass rate of one rolling ratio (calculated according to the ratio of rolling area) is about 80% on average; after increasing the overlap width, That is, single vibration flat roller overlaps 30cm low frequency high vibration, one roller compaction 8 times, and the digital dam monitoring shows that the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/046E02D17/18
CPCE02D3/046E02D17/18
Inventor 刘武超干海勇王森荣乔介平熊亮
Owner SINOHYDRO BUREAU 5