Device and method for simultaneously burying multiple soil pressure sensors

An earth pressure sensor and sensor technology, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc., can solve the problems of uncoordinated earth pressure test results, easily deformable soil, excessive rigidity, etc., and achieve test results Reliable, obvious economic benefit, high effect of deformation coordination

Active Publication Date: 2018-05-15
HOHAI UNIV +1
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Problems solved by technology

[0005] In order to solve the problems in the prior art, the present invention provides a device and method for embedding multiple earth pressure sensors at the same time, which overcomes the incompatibility of the reinforcement cage or channel steel due to excessive rigidity, easy deformation and soil mass in the conventional drilling method. And then lead to the defect that the error of the earth pressure test result is large

Method used

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  • Device and method for simultaneously burying multiple soil pressure sensors
  • Device and method for simultaneously burying multiple soil pressure sensors
  • Device and method for simultaneously burying multiple soil pressure sensors

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Embodiment 1

[0048] The Binjiang Avenue project in a certain city uses the original river embankment to widen and reinforce it to become a secondary urban road. After geological exploration, it was found that the subsurface is mainly composed of silt and fine sand with silty clay, in order to find out the lateral displacement of the embankment soil. In case, it is planned to drill holes and bury lateral soil pressure sensors at the corners of the embankment.

[0049] Specific steps are as follows:

[0050] Step 1. According to the test requirements, use mud protection wall drilling at a certain horizontal distance away from the corner of the embankment. The diameter of the hole is larger than the diameter of the earth pressure sensor 2. The drilling method adopts mud protection rotary drilling, and the level of the protection mud is high. Above the groundwater level 0.5 m;

[0051] Step 2. Take several sections of PVC casing 1 with a length of 1 m, and insert the earth pressure sensor 2 into the...

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Abstract

The invention discloses a device for simultaneously burying multiple soil pressure sensors. The device comprises multiple sections of PVC sleeve pipes, the multiple soil pressure sensors, protection steel clamps, high-strength bolts and multiple joint pipes. Each PVC sleeve pipe is of a U-shaped structure. The two ends of each soil pressure sensor are embedded in guide grooves of the correspondingPVC sleeve pipe correspondingly and are fixed by the corresponding protection steel clamps and high-strength bolts. One corresponding soil pressure sensor is fixed in each section of PVC sleeve pipe.Every two sections of PVC sleeve pipes are connected through the corresponding joint pipe. The multiple soil pressure sensors are simultaneously buried in soil and are connected with a data collectorfor soil pressure testing. According to the device and method for simultaneously burying the multiple soil pressure sensors, the multiple soil pressure sensors can be simultaneously buried in a drilled hole, the burying efficiency is high, the soil pressure sensors are effectively protected, the damage rate is reduced, the service life is long, the cost of work components is low, practicality ishigh, and application prospects are wide.

Description

Technical field [0001] The invention relates to the technical field of engineering monitoring, in particular to a device and method for burying multiple earth pressure sensors at the same time. Background technique [0002] In engineering monitoring, especially in geotechnical engineering monitoring, it is often necessary to obtain the earth pressure parameters inside the soil. Usually, an earth pressure gauge is buried in the soil and the required data is obtained through the corresponding receiving instrument. [0003] The method of embedding the soil pressure gauge in the soil is usually the drilling method. First, drill holes in the soil by means of mud wall protection, then fix the earth pressure gauge on the steel cage, put the earth pressure gauge and the steel cage together at the specified depth in the drill hole, and finally backfill the hole For fine sand, the earth pressure test shall be carried out after the fine sand is consolidated. But the shortcomings of this met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/08
CPCE02D1/08
Inventor 李海淼孙阳许乐炎马志国王华坤
Owner HOHAI UNIV
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