软岩填料湿化变形规律
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U416

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Study on Wetting Deformation Characteristics of Soft Rock Filler
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    摘要:

    分别对风干和饱和状态软岩填料进行了中型三轴压缩试验,得到了不同围压条件材料的变形规律。采用双线法,以同一轴向偏应力下风干及饱和状态材料的应变差值作为其湿化变形,主要分析了围压对其变化规律的影响,主要得到了以下规律:①相对于风干状态,围压对饱和状态填料变形规律影响更大;②湿化变形发展分为两个阶段,以湿化变形值发展到临界值为分界,后一阶段湿化变形显著增大;③在湿化变形发展到临界值之前的初始阶段中,围压不是其主要影响因素,第二阶段中围压对其影响明显;④给出了湿化变形分析回归公式并进行了验证。

    Abstract:

    The medium triaxial compression tests of air-dried and saturated soft rock fillers were carried out respectively, and the deformation laws of materials under different confining pressure conditions were obtained. Using double-line method, the strain difference of air-dried and saturated materials under the same axial deviatoric stress is taken as its wetting deformation, and the influence of confining pressure on its variation law is mainly analyzed. The following laws are obtained: ①Compared with air-dried state, confining pressure has a greater influence on the deformation law of saturated state fillers; ②The development of wetting deformation is divided into two stages, in which the wetting deformation value develops to the critical value as the boundary value, and the wetting deformation increases significantly in the latter stage;③In the initial stage before the wetting deformation develops to the critical value, the confining pressure is not the main influencing factor, and the influence of the confining pressure on it is obvious in the second stage;④The regression formula of wetting deformation analysis is given and verified.

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殷坤垚,杜秦文,刘辉. 软岩填料湿化变形规律[J]. 科学技术与工程, 2020, 20(13): 5363-5368.
Yin Kunyao, Du Qinwen, Liu Hui. Study on Wetting Deformation Characteristics of Soft Rock Filler[J]. Science Technology and Engineering,2020,20(13):5363-5368.

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  • 收稿日期:2019-08-05
  • 最后修改日期:2019-12-11
  • 录用日期:2019-11-10
  • 在线发布日期: 2020-06-09
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