| 康和勇,吴取渗,刘建茂.用双头深层搅拌桩施工止水帷幕的新工法研究[J].地质找矿论丛,2009,24(1):87-90 |
| 用双头深层搅拌桩施工止水帷幕的新工法研究 |
| STUDY ON THE NEW TECHNOLOGY FOR WATER-STOP SCREENING WITH THE DEEP-DUALBIT AGITATOR OPERATION |
| 投稿时间：2008-02-14 |
| DOI：10.6053/j.issn.1001-1412.2009.1. 017 |
| 中文关键词: 深层搅拌桩 止水帷幕 |
| 英文关键词:deep agitation column water-stop screen |
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| 中文摘要: |
| 双头深层搅拌桩是做止水帷幕的一种常用方法。常规施工为"整米施工法"。新工法改为半米移机,由一组一组的间断施工改为一根一根的连续施工,保证了桩与桩之间的搭接长度和有效咬合,使深层搅拌桩形成一个连续的整体;喷浆与搅拌根据地层情况及所在位置而定,对透水性好的地层多喷多搅,对透水性差的地层少喷少搅,对透水性强的土层位于基坑底部时更要多喷多搅。这样就保证了喷浆及搅拌的效果,使喷浆、搅拌更有针对性,使深层搅拌桩做止水帷幕的止水效果更好。 |
| 英文摘要: |
| The deep agitated column is the common technology to build water-stop screen.The conventional method is of one meter operation and the new one is of half meter operation.The conventional adopted intermittent operation one group of column by one group of column and the new changes the intermittent to continuous operation of each column and ensure overlapping length and griping of the neighboring column and integration of the deeply agitated column.Operation of cement injection and agitation is accorded with stratum situation and its location.For the stratum with high permeability more cement would be injected and agitation more intensified and the stratum with poor permeability less injection and agitation and the most injection and agitation for strong permeable stratum at bottom of base pit.Operated in this way the injection and agitation are more targeted and the water efficiently stopped by the screen. |
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