伺服控制土石混合体压力渗透仪研究  

DEVELOPMENT OF SERVO-CONTROL ROCK AND SOIL AGGREGATE PERMEABILITY TEST APPARATUS

作　　者：顾金略[1,2] 李晓[1] 李守定[1] 陈雨[1] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国科学院研究生院,北京100049

出　　处：《工程地质学报》2009年第5期711-716,共6页Journal of Engineering Geology

基　　金：国家重点基础研究发展规划(973)项目(2009CB724605);国家自然科学基金资助项目(40702052);中国科学院知识创新工程重要方向项目(KJCX3-SW-L1;KZCX2-YW-109);地质灾害防治与地质环境保护国家重点实验室开放基金资助项目(GZ2007-03);中国科学院地质与地球物理研究所实验技术创新基金(ZC0905)资助

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。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.

关 键 词：土石混合体 渗透仪 伺服控制 高水压 

分 类 号：P642[天文地球—工程地质学]