Probe for micro static penetrometer

Abstract

The invention discloses a probe for a micro static penetrometer. An outer barrel is a cylinder with openings at two ends, wherein inner threads are arranged at two ends of the inner barrel wall of the outer barrel; a strain barrel is arranged in an inner cavity of the outer barrel; outer threads which are matched with the inner threads of the inner barrel wall of the outer barrel are arranged on a peripheral surface on one opening end of the strain barrel; a strain sheet is arranged on the barrel wall of the strain barrel; outer threads are arranged on the peripheral surface on the lower end of a force guide rod; a limiting boss is additionally arranged on the peripheral surface of the force guide rod; the upper end of the force guide rod is inserted into the inner cavity of the strain barrel; a inner step hole is arranged in a conical head; the conical head is arranged below the outer barrel; a screw plug is arranged on the lower end of the outer barrel; and the lower surface of the limiting boss of the strain barrel is fixed against the top surface of the screw plug. The probe for the micro static penetrometer provided by the invention has the advantages of reducing weight and size of the static penetrometer, being capable of miniaturizing the penetrometer, being convenient to carry, being capable of greatly improving working efficiency of detection and the like.

Description

technical field [0001] The invention relates to a probe for a miniature static penetration sounder. Background technique [0002] In the construction of power transmission projects, it is necessary to conduct geotechnical surveys where the power transmission facilities to be built are located, and to extract geotechnical related data to serve the project construction. [0003] The geotechnical engineering investigation of transmission lines has the following characteristics: 1) Large spatial span: each transmission line ranges from a few kilometers to hundreds of kilometers, with a large spatial span and a wide range of operations; 2) Many operating points: usually transmission lines are Level and topography limit the number of tower positions per kilometer, and a power transmission line has tens to hundreds of tower positions. Each base tower position needs to provide foundation soil and geotechnical engineering parameters separately, and the workload is heavy; 3) Geotechni...

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Problems solved by technology

[0003] The geotechnical engineering investigation of transmission lines has the following characteristics: 1) Large spatial span: each transmission line ranges from a few kilometers to hundreds of kilometers, with a large spatial span and a wide range of operations; 2) Many operating points: usually transmission lines Level and topography limit that there are several base tower positions per kilometer, and a power transmission line has tens or hundreds of tower positions. Each base tower position needs to provide foundation soil and geotechnical engineering parameters separately, and the workload is heavy; 3) Geotechnical engineering conditions are complex: a power transmission line The line usually spans a variety of terrain and landforms, and the geotechnical engineering conditions are various and complex. The distance between every two adjacent exploration points is at least hundreds of meters

4) The field work time is relatively short and the method is not complete, especially for 220kV and below power transmission projects, the field time period is short, and the regulations require the same geomorphic unit to arrange an exploration point every 3 to 5 bases, which itself lacks certain rigor sex

However, there are several disadvantages: first, there is no objective data to determine the engineering parameters of the foundation soil; second, although the manual small screw drill operation is faster, it still cannot match the progress of the power overhead line team

Third, the survey depth is limited, requiring a little more staff

[0007] At present, the most portable 2T portable static penetrometer has a probe with a cone area of ​​10mm 2 , the length is about 200mm, it needs a set of complex three-stage transmission mechanism, so the whole is heavy and requires 4 skilled workers to operate, which is time-consuming and labor-intensive

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