Line simple drilling cutting ring undisturbed sample extracting device

Abstract

The invention discloses a line simple drilling cutting ring undisturbed sample extracting device comprising a beam type opened cutting ring soil extracting device, a pressurizing lifting power assisting device matching with the beam type opened cutting ring soil extracting device and a cutting ring soil sample storing device. The beam type opened cutting ring soil extracting device comprises a fixed semi-closed sampling tube, one end of the fixed semi-closed sampling tube is provided with a sealing conical tube, the sealing conical tube is provided with a through hole, inside, communicated with the fixed semi-closed sampling tube, a ball valve is arranged in the through hole, the end of the sealing conical tube is provided with a connected hollow drill rod, and the sealing conical tube is provided with vent holes; the pressurizing lifting power assisting device is installed on the hollow drill rod.

Description

technical field [0001] The invention relates to the determination of a simple ring-cutter earth-taking device for a line, and belongs to the field of civil engineering. Background technique [0002] At present, the road survey mainly adopts drilling rigs to take samples, and the undisturbed samples and disturbed samples can be taken. In the route survey, considering the depth of subgrade influence, the convenience of construction and equipment handling, and economical factors, sampling is mainly carried out by manual Luoyang shovel or twist (spiral) drill, and only disturbed samples of grades III to IV can be taken for soil classification. , but the water content, density, consolidation and strength tests cannot be carried out. [0003] According to the "Code for Geological Survey of Highway Engineering" (JTJC20-2011), "Code for Geotechnical Engineering Survey" (revised in 2009) GB50021-2001, it is appropriate to use the rapid static continuous pressing method for soil samp...

AI Technical Summary

Problems solved by technology

In the route survey, considering the depth of subgrade influence, the convenience of construction and equipment handling, and economical factors, sampling is mainly carried out by manual Luoyang shovel or twist (spiral) drill, and only disturbed samples of grades III to IV can be taken for soil classification. , but the water content, density, consolidation and strength tests cannot be carried out

[0003] According to the "Code for Geological Survey of Highway Engineering" (JTJC20-2011), "Code for Geotechnical Engineering Survey" (revised in 2009) GB50021-2001, it is appropriate to use the rapid static continuous pressing method for soil samples, while the current Luoyang shovel, twist drill Neither can be realized. The ring knife can take the original sample on site, but it is only limited to the surface layer. The main reasons are three points: (1) How to add the arm of the ring knife to increase the depth of the soil, and the ring knife head to ensure the original soil; (2) the ring knife The preparation and fixation of the knife soil taker ensure that the soil sample can enter the ring knife; (3) the power-assisted method when going down to ensure that the sampler is pressed down and lifted up; (4) the transportation and storage of the ring knife sampling is also a problem, The ring knife is round, how to ensure that the sample is sealed, the direction of the sample is consistent with the original position, prevent the change of moisture content, strictly prevent exposure or freezing, and avoid vibration during transportation to ensure the quality of the original sample

Images