A measurement system and method for variable water head permeability coefficient

A permeability coefficient and measurement system technology, which is applied in the field of rock permeability experiments, can solve the problems of long time-consuming permeability experiments and low accuracy of permeability coefficient measurement, and achieve the effects of short test period, improved measurement accuracy, and guaranteed accuracy

Active Publication Date: 2019-06-14
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0003] In order to solve the technical problem that the permeability experiment takes a long time and the experiment is affected by temperature and pressure changes, the accuracy of the permeability coefficient measurement is not high. The present invention provides a variable head permeability coefficient measurement system and measurement method. The specific technical scheme is as follows

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  • A measurement system and method for variable water head permeability coefficient
  • A measurement system and method for variable water head permeability coefficient
  • A measurement system and method for variable water head permeability coefficient

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Embodiment Construction

[0035] combine Figure 1 to Figure 9 As described above, the specific implementation of a variable head permeability coefficient measurement system and measurement method provided by the present invention is as follows.

[0036] A variable water head permeability coefficient measurement system specifically includes a liquid storage system, a test system, a control system and a data processing system. Through the cooperation of the liquid storage system 1, the test system 2, the control system 3 and the data processing system 4, the automatic control of the experiment process of the permeability coefficient measurement is realized, thereby improving the test efficiency and measurement accuracy.

[0037] Wherein, the liquid storage system 1 includes a water storage bucket 11, a sealing cover 12 and an adapter box 13, the sealing cover 12 is arranged on the upper end of the water storage bucket 11, and the sealing cover 12 is provided with a water injection port 121 and an air in...

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Abstract

A measurement system and method for a falling head permeability coefficient, relating to the technical field of rock seepage experiments, solving the technical problem of long time consumed by a permeability test, eliminating the impact of temperature and pressure changes on permeability coefficient measurement. The system comprises a liquid storage system (1), a test system (2), a control system (3), and a data processing system (4); the liquid storage system (1) comprises a water storage barrel (11), a sealing cover (12), and an adaption box (13); a water injection opening (121) and an air inlet (122) are provided on the sealing cover (12); the test system (2) comprises a test bench (21), a water guide pipe (22), and a test barrel (23); the water guide pipe (22) is connected to the test barrel (23); the control system (3) comprises an automatic control valve (31), a heating rod (32), an air inlet pipe (34), a high-pressure gas tank (35), and a pressure reducing valve (36); the automatic control valve (31) is connected to the adaption box (13); the high-pressure gas tank (35) is communicated with the air inlet (122); the data processing system (4) comprises a signal acquisition device (41) and a computer (42). Also disclosed is a method for determining a permeability coefficient by means of instantaneous Darcy's law and the system. The present system and method have the beneficial effects of high degree of automation, short test period, and more accurate measurement.

Description

technical field [0001] The invention relates to the technical field of rock seepage experiments, in particular to a test device for measuring the permeability coefficient of variable water head and a method for measuring the permeability coefficient by using the device. Background technique [0002] Similar material simulation experiment is an important technical means of geotechnical engineering research. In the laboratory, a model similar to the actual engineering is made according to the similarity principle, and the mechanical parameters and stress distribution of the model are observed with the help of test instruments, and the results of the research on the model are used to infer The mechanical phenomena that may occur in the prototype, as well as the law of rock mass stress distribution, so as to solve the practical problems in the production of geotechnical engineering. Similarly, in the process of mine geological research, it is also an important research method to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 刘伟韬刘玉本杜衍辉庞立夫孙茜徐百超
Owner SHANDONG UNIV OF SCI & TECH
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