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伺服控制土石混合体压力渗透仪研究
引用本文:顾金略,李晓,李守定,陈雨.伺服控制土石混合体压力渗透仪研究[J].力学学报,2009,17(5):711-716.
作者姓名:顾金略  李晓  李守定  陈雨
作者单位:(中国科学院地质与地球物理研究所,北京,100029) (中国科学院研究生院,北京,100049)
摘    要:土石混合体渗流特性的研究对于工程建设、土石混合体滑坡的防治有重要意义。总结了前人对于堆石料渗透试验仪的研究,其特点在于渗透筒的大尺寸、供水系统、供水压力的控制;透水板、制样方法、筒壁防渗对于试验的影响。周中等自制的常水头渗透仪,主要对土石混合体渗透系数及其影响因素进行研究。本文研制的伺服控制土石混合体压力渗透仪能够准确伺服控制供水压力和供水速度,提供不超过2MPa的高水压,调节试样渗流速度,操作方便,能够有针对性的研究土石混合体的渗流特性。

关 键 词:土石混合体  渗透仪  伺服控制  高水压

DEVELOPMENT OF SERVO-CONTROL ROCK AND SOIL AGGREGATE PERMEABILITY TEST APPARATUS
GU Jinlue|LI Xiao|LI Shouding|CHEN Yu.DEVELOPMENT OF SERVO-CONTROL ROCK AND SOIL AGGREGATE PERMEABILITY TEST APPARATUS[J].chinese journal of theoretical and applied mechanics,2009,17(5):711-716.
Authors:GU Jinlue|LI Xiao|LI Shouding|CHEN Yu
Institution:(Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing|100029) (Graduate University of Chinese Academy of Sciences, Beijing|100049)
Abstract:The permeability of rock and soil aggregates (RSA) is important for engineering construction, prevention and treatment of landslides in RSA. This paper gives a summary of the previous studies of the rockfill permeability test apparatus. The Tsinghua University test system is special for its recycle of water.  The Hohai University test instrument is horizontal. Its lifter has the accurate control of the water level for its higher and lower water supply. Nanjing Hydraulic Research Institute studied the influence of water board, sample preparation methods and anti-seepage of the wall  to the permeability test. The Luo Yuzai permeability test apparatus is special at its capability for providing the continuous high-pressure water without air.  Using self-made permeability test instrument, Zhou Zhong and others  from Central South University studied the permeability coefficient and its influencing factors of RSA.  On the basis of previous studies,  we have developed a servo-control rock and soil aggregate permeability test apparatus. The apparatus can servo-control the velocity and stress of the water supply, provide high-pressure (< 2MPa) and adjust the velocity of the seepage. It is convenient to operate. The apparatus can study the permeability of the RSA successfully.
Keywords:Rock and soil aggregate  Permeability  Test apparatus  Servo-control  High-pressure water
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