Method for double-vacuum self-loading prepressing and earthwork composite filling low-energy strong-ramming reinforcing soft soil

A composite filler, low-energy technology, used in soil protection, infrastructure engineering, construction, etc., can solve problems such as inability to provide construction methods, inability to form holes, and sudden increase in engineering costs, so as to reduce the probability of rubber soil and reduce engineering costs. cost and the effect of improving construction efficiency

Inactive Publication Date: 2008-01-09
张志铁 +1
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Problems solved by technology

For areas lacking in sand and stone resources, it will be necessary to transport sand and stones over long distances, which will increase the cost of the project sharply, and even cause the construction method to be in trouble because these fillers cannot be provided at all.
[0004] 2. In the construction method, from vacuum electroosmotic dewatering to low-energy dynamic compaction, it takes a long construction time to pull out the tube and lay the filler in the middle
At this time, the "recharge" phenomenon of external water will occur on the site after precipitation, which will cause the water level of the water level pipe to rise, which will bring great disadvantages to the next low-energy dynamic compaction construction.
[0005] 3. If block stones are used as dynamic tamping filler in the construction method, due to the obstruction of block stones, it is difficult to insert vacuum electroosmosis tubes during the second vacuum electroosmosis dewatering, so that the process cannot be completed. hole failed
[0006] The above shortcomings largely restrict the popularization and application of this construction method.

Method used

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  • Method for double-vacuum self-loading prepressing and earthwork composite filling low-energy strong-ramming reinforcing soft soil

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] As shown in Figure 1 and 2.

[0037] 1. Low-level vacuum self-loading combined with preloading

[0038] See Figure 1. First build the cofferdam 2, blow fill mud 3 into the cofferdam to a certain elevation, insert plastic drainage board 13 on the mud surface, lay vacuum horizontal network pipe 4, install vacuum system 5, blow ultra-thick mud seal layer 6, vacuum preloading system Vacuuming, low vacuum self-loading joint preloading starts. The vacuum preloading system is to lay horizontal main pipes and branch pipes on the mud blowing surface, plastic drainage boards are connected to the branch pipes, and the branch pipes are connected to the main pipes. The dry pipe is connected to the water collection well, and the water collection well is connected to the vacuum pump. When the soft soil below the mud seal layer reaches the design consolidati...

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Abstract

A ground reinforce procedure includes the steps of: A. low position vacuum self-loading pre-press; B. vacuum well point precipitation; C. vacuum electroosmosis precipitation and complex stuffing paving simultaneously; D. low power strong tamp; E. vibrate rolling; F. smoothing.

Description

technical field [0001] The invention relates to a comprehensive reinforcement method for high-efficiency large-area soft soil foundations suitable for flow mud, silt and silty soil foundations mainly composed of fine particles and low permeability coefficient. In particular, it is suitable for land reclamation or low-lying land where the site has high requirements on strength and deformation and the local lack of materials such as sand and gravel as fillers required for low-energy dynamic compaction requires large-area soft foundation reinforcement and uses dredging mud to raise its elevation. The method for height filling engineering is specifically a method for reinforcing soft soil with dual vacuum self-loading preloading and geotechnical composite filler low-energy dynamic compaction. Background technique [0002] At present, the techniques for strengthening soft soil foundation and raising its elevation include surcharge preloading method, vacuum surcharge combined prel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/02
Inventor 张志铁刘斯宏
Owner 张志铁
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