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 (中冶集團(tuán)武漢勘察研究院有限公司， 武漢 430080)

［摘要］依據(jù)強(qiáng)夯-排水板聯(lián)合加固機(jī)理，結(jié)合具體工程項(xiàng)目針對(duì)長(zhǎng)江中下游河漫灘吹填地基特點(diǎn)進(jìn)行了插塑料排水板和不插塑料排水板兩種情況在不同能級(jí)下的強(qiáng)夯試驗(yàn)。通過試驗(yàn)對(duì)超孔隙水壓力、夯擊次數(shù)、夯沉量、CPT值和地基承載力特征值等進(jìn)行分析研究，得到了強(qiáng)夯處理該類地基的一系列參數(shù)，據(jù)此對(duì)原設(shè)計(jì)方案進(jìn)行了補(bǔ)充和優(yōu)化，并在原料場(chǎng)地基處理中予以應(yīng)用。工程實(shí)踐表明，通過強(qiáng)夯-排水板聯(lián)合處理后的河漫灘吹填地基可以滿足料場(chǎng)初期堆料要求，并為后期貯礦管理實(shí)現(xiàn)最終堆料目標(biāo)提供保障，是一種既科學(xué)經(jīng)濟(jì)又切實(shí)可行的地基處理方法。

［關(guān)鍵詞］強(qiáng)夯; 塑料排水板; 河漫灘; 吹填地基; 有效加固深度; 淺層平板載荷試驗(yàn); 超孔隙水壓力

中圖分類號(hào)：TU47      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2014)01-0092-06

Experimental study and application of combination consolidation of dynamic consolidation and drainage plate in floodplain blow-fill foundation

Huang Tao, Peng Dianhua

（Wuhan Surveying-Geotechnical Research Institute Co., Ltd. of MCC, Wuhan 430080, China)

Abstract: Based on combination consolidation mechanism of dynamic consolidation and drainage plate, dynamic compaction tests were conducted with different power levels under conditions with or without plastic drainage plate inserted in floodplain blow-fill foundation of a practical engineering project located in middle and lower reaches of Yangtze River. Excess pore water pressure, dynamic consolidation numbers, ramming volume, CPT and fak were analyzed by tests to obtain a series of parameters in dynamic consolidation. Based on above parameters, the original design scheme was complemented and optimized accordingly, which is applied in the rare material foundation treatment. The practical application of engineering shows that foundation treatment by the combinations means of dynamic consolidation and drainage plate make the floodplain blowfill foundation meet the requirements of preliminary stockpiling, and ensure the mine storage to reach the stockpiling goal finally. Combination consolidation of dynamic consolidation and drainage plate is a scientific and economic foundation treatment method.

Keywords: dynamic consolidation; plastic drainage plate; floodplain; blow-fill foundation; effective reinforcement depth; shallow plate static load test; excess pore water pressure

作者簡(jiǎn)介：黃濤，碩士，教授級(jí)高級(jí)工程師，碩士生導(dǎo)師，注冊(cè)土木工程師（巖土），Email: huangtao0815@126.com。

參考文獻(xiàn)

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