伺服控制土石混合体压力渗透仪研究.pdf

Journal of Engineering Geology工程地质学报1004-96652009/17(5)-0711-06
伺服控制土石混合体压力渗透仪研究
顾金略0李晓の李守定°陈雨
(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)
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
制的常水头滲透仪,主要对土石混合体滲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
中图分类号:P642文献标识码:A
DEVELOPMENT OF SERVO- CONTROL ROCK AND SOIL AGGREGATE
PERMEABILITY TEST APPARATUS
GU Jinlue D LI Xiao LI Shouding CHEN Yud
Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029)
(2graduate Uniuersity of Chinese Academy of Sciences, Beijing 100049
Abstract The permeability of rock and soil aggregates( RSA) is important for engineering construction, preven-
tion and treatment of landslides in RSA. This paper gives a summary of the previous studies of the rockfill permea
bility 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 sup-
ply. Nanjing Hydraulic Research Institute studied the influence of water board, sample preparation methods and an
ti -seepage of the wall to the permeability test. The o 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
test apparatus. The apparatus can servo -control the velocity and stress of the water supply, provide At meability
RSA. On the basis of previous studies, we have developed a servo-control rock and soil aggregate pe
res
sure(< 2MPA )and adjust the velocity of the seepage. It is convenient to operate. The apparatus can study the
permeability of the RSA successfully
Key words Rock and soil aggregate, Permeability, Test apparatus, Servo-control, High-pressure water
收稿日期:2009-04-17;收到修改稿日期:2009-07-10
甚金项目:国家重点基础研究发展规划(973)项目(200CB724605),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(KICX3-SWーLI,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
(CZ2007-03),中国科学院地质与地球物理研究所实验技术创新基金(20905)资助
第一作者简介:顾金略,工程地质专业,Email:kinglet206@qg.com