A Method and Equipment for Continuously Testing the Permeability Coefficient of Rock and Soil Layers
The water pressure test and steady-flow pumping test are still commonly used for measuring the permeability coefficient of rock and soil strata. Limited by the fact that the average value of the permeability coefficient could be obtained only by this testing method, the accuracy of the experimental...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/6639892 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832550850849931264 |
|---|---|
| author | Wei Chen Datian Cui Meng Xu Rongchao Xu |
| author_facet | Wei Chen Datian Cui Meng Xu Rongchao Xu |
| author_sort | Wei Chen |
| collection | DOAJ |
| description | The water pressure test and steady-flow pumping test are still commonly used for measuring the permeability coefficient of rock and soil strata. Limited by the fact that the average value of the permeability coefficient could be obtained only by this testing method, the accuracy of the experimental results of the permeability coefficient for special rock and soil strata is not good. Therefore, a new on-site testing method and equipment for continuously measuring the permeability coefficient of rock and soil strata is studied in this paper. The method is suitable for water pressure testing in borehole and the steady-flow pumping test. The technical proposal is when the pumping test or water pressure test is carried out, the final water penetration will tend to be a stable value, and then, the high-precision current meter probe will be placed at the bottom of the pumping test hole or water pressure test hole. For the pumping test, the current meter will be lifted uniformly from the bottom of the borehole testing section to the stable water level. Meanwhile, the flow rate of a differential zone of the tested section is continuously detected. For the water pressure test, the current meter will be lifted uniformly from the bottom of the borehole test section to the top of the borehole test section, and the flow rate of the differential section will be continuously detected. Through data analysis and processing, not only the average permeability coefficient of the detected sections can be obtained but also the permeability coefficient of the differential section of the rock and soil stratum can be calculated, respectively. Furthermore, the corresponding relationship between the permeability coefficient and the detected location can be obtained. In view of the abovementioned reasons, the leaking point, the specific position, and the leakage quantity of the detected section could be found out accurately, which will improve the accuracy of the testing results obviously. |
| format | Article |
| id | doaj-art-98c79181cea34a059076e7093e1f77eb |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-98c79181cea34a059076e7093e1f77eb2025-02-03T06:05:46ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/66398926639892A Method and Equipment for Continuously Testing the Permeability Coefficient of Rock and Soil LayersWei Chen0Datian Cui1Meng Xu2Rongchao Xu3College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaSchool of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaCollege of Geology and Info-Physics Engineering, Central South University, Changsha 410083, ChinaCollege of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaThe water pressure test and steady-flow pumping test are still commonly used for measuring the permeability coefficient of rock and soil strata. Limited by the fact that the average value of the permeability coefficient could be obtained only by this testing method, the accuracy of the experimental results of the permeability coefficient for special rock and soil strata is not good. Therefore, a new on-site testing method and equipment for continuously measuring the permeability coefficient of rock and soil strata is studied in this paper. The method is suitable for water pressure testing in borehole and the steady-flow pumping test. The technical proposal is when the pumping test or water pressure test is carried out, the final water penetration will tend to be a stable value, and then, the high-precision current meter probe will be placed at the bottom of the pumping test hole or water pressure test hole. For the pumping test, the current meter will be lifted uniformly from the bottom of the borehole testing section to the stable water level. Meanwhile, the flow rate of a differential zone of the tested section is continuously detected. For the water pressure test, the current meter will be lifted uniformly from the bottom of the borehole test section to the top of the borehole test section, and the flow rate of the differential section will be continuously detected. Through data analysis and processing, not only the average permeability coefficient of the detected sections can be obtained but also the permeability coefficient of the differential section of the rock and soil stratum can be calculated, respectively. Furthermore, the corresponding relationship between the permeability coefficient and the detected location can be obtained. In view of the abovementioned reasons, the leaking point, the specific position, and the leakage quantity of the detected section could be found out accurately, which will improve the accuracy of the testing results obviously.http://dx.doi.org/10.1155/2020/6639892 |
| spellingShingle | Wei Chen Datian Cui Meng Xu Rongchao Xu A Method and Equipment for Continuously Testing the Permeability Coefficient of Rock and Soil Layers Advances in Civil Engineering |
| title | A Method and Equipment for Continuously Testing the Permeability Coefficient of Rock and Soil Layers |
| title_full | A Method and Equipment for Continuously Testing the Permeability Coefficient of Rock and Soil Layers |
| title_fullStr | A Method and Equipment for Continuously Testing the Permeability Coefficient of Rock and Soil Layers |
| title_full_unstemmed | A Method and Equipment for Continuously Testing the Permeability Coefficient of Rock and Soil Layers |
| title_short | A Method and Equipment for Continuously Testing the Permeability Coefficient of Rock and Soil Layers |
| title_sort | method and equipment for continuously testing the permeability coefficient of rock and soil layers |
| url | http://dx.doi.org/10.1155/2020/6639892 |
| work_keys_str_mv | AT weichen amethodandequipmentforcontinuouslytestingthepermeabilitycoefficientofrockandsoillayers AT datiancui amethodandequipmentforcontinuouslytestingthepermeabilitycoefficientofrockandsoillayers AT mengxu amethodandequipmentforcontinuouslytestingthepermeabilitycoefficientofrockandsoillayers AT rongchaoxu amethodandequipmentforcontinuouslytestingthepermeabilitycoefficientofrockandsoillayers AT weichen methodandequipmentforcontinuouslytestingthepermeabilitycoefficientofrockandsoillayers AT datiancui methodandequipmentforcontinuouslytestingthepermeabilitycoefficientofrockandsoillayers AT mengxu methodandequipmentforcontinuouslytestingthepermeabilitycoefficientofrockandsoillayers AT rongchaoxu methodandequipmentforcontinuouslytestingthepermeabilitycoefficientofrockandsoillayers |