System and method for monitoring soil body inner stress variation of loess field under soaking condition
A technology for internal stress and monitoring systems, applied in the direction of measuring force, measuring devices, instruments, etc., to achieve the effect of simple system structure, simple operation, and safety design
Inactive Publication Date: 2013-07-10
NORTHWEST UNIV(CN)
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Problems solved by technology
Therefore, when evaluating the sensitivity of loess to collapsibility and the influence of lateral deformation, it is necessary to obtain data on the internal stress intensity and stress distribution state of the soil during water immersion, but there is no systematic, scientific, and efficient method for obtaining such data. The device and method, the research and development of the device and method are very necessary, and have great practical significance for the foundation treatment of various major projects in the loess area
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[0082] In order to obtain the data and changes of the internal stress intensity and stress distribution state of the loess site under the condition of large-scale flooding, feedback the possible problems in the construction process, and provide a theoretical basis for timely adjustment of the construction plan, the inventor was in Shanxi Province. The system and method of the present invention are used in a loess plateau area to carry out dynamic monitoring of earth pressure. The specific process is as follows:
[0083] 1. Assembly of the monitoring system
[0084] Firstly, the upper computer was installed and debugged to adapt to the data transmission from the data collector to the upper computer in the future; then the data collector was matched with the upper computer to ensure normal connection and data transmission, and the data collector passed the RS485 to USB data cable Connect the host computer; after that is the assembly of the power module, the 220v AC is directly ...
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Abstract
The invention discloses a system and a method for monitoring soil body inner stress variation of a loess field under a soaking condition. The method includes the following steps: (1) monitoring system assembling; (2) sensor calibrating: calibrating each soil pressure sensor to obtain calibration curves of all the soil pressure sensors; (3) sensor burying: excavating a soaking pit and burying wells, burying one soil pressure sensor in each burying well, after all the soil pressure sensors are buried, backfilling and punning all the burying wells; (4) data collecting; and (5) data processing: calculating soil pressure sigma to obtain a soil pressure temporal curve. The soil body inner stress development conditions of the loess field under the near-surface soaking condition can be monitored rapidly, continuously and accurately, the loess body inner stress state of the field is fed back, reliable parameters are provided for evaluation of saturated yielding sensibility and lateral deformation influence.
Description
technical field [0001] The invention belongs to the technical field of engineering monitoring, and in particular relates to a soil internal stress monitoring system and method, in particular to a soil internal stress monitoring system and method under the condition of loess field flooding. The invention is used for rapid, continuous and accurate monitoring of the internal stress intensity and stress distribution state of the loess body under the condition of large-area water immersion on the ground surface. Background technique [0002] Due to its special formation age and environment, loess has macroporosity and thus strong water sensitivity, and the most prominent manifestation of loess water sensitivity is collapsibility. With the continuous and rapid development of the national economy and policy preference, the construction speed and scale in the central and western regions of my country are increasing day by day, resulting in increasingly tight land use in major cities...
Claims
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IPC IPC(8): G01L1/22
Inventor 王家鼎马闫彭淑君李家栋谢婉丽谷天峰
Owner NORTHWEST UNIV(CN)