On the piezocone test of shallow biogenetic gassy sand soil

GUO Ai-guo; KONG Ling-wei; CHEN Jian-bin; ZHONG Fang-jie

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On the piezocone test of shallow biogenetic gassy sand soil

更新时间：2026-06-25

- On the piezocone test of shallow biogenetic gassy sand soil
- Vol. 27, Issue S2, (2006)
- 作者机构：
  
  中国科学院岩土力学重点实验室,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU411
- Online First：16 December 2006，
  
  Published：2006
- 稿件说明：
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GUO Ai-guo, KONG Ling-wei, CHEN Jian-bin, et al. On the piezocone test of shallow biogenetic gassy sand soil[J]. 2006, 27(S2).
DOI：

GUO Ai-guo, KONG Ling-wei, CHEN Jian-bin, et al. On the piezocone test of shallow biogenetic gassy sand soil[J]. 2006, 27(S2). DOI：

摘要

含浅层生物气的砂土是一类特殊的非饱和土，由于此类砂土中含有数量不等的生物气，生物气的存在对砂土的工程性质影响较大，使其有着有别于一般砂性土的特殊工程特性。本文采用孔压静力触探仪，对河湖相沉积的砂土是否含有生物气进行了初步判别，然后对生物气释放前后砂土的承载性能进行了现场和室内试验对比研究，认为在不发生渗透破坏的情况下，生物气的缓慢释放会提高砂土的承载力，有利于砂土上部建筑物的稳定。

Abstract

Shallow biogenetic gassy sand soil is one of special unsaturated soil. The biogenetic gas with different quantities constained in the sand soil has great influence on its engineering properties. In this paper

the preliminary judgment is drawn on the existence of the biogenetic gas in the fluvial-lacustrine deposit sand soil

and then the in-situ and laboratory tests are done to compare the bearing capacities of the soil before and after gas release. It is found that without seepage failure

the slow release of the biogenetic gas can increase the bearing capacity of the soil

which is benefit to the stability of the upper buildings.

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