A portable measuring device with adjustable depth for rock and soil geological survey

Abstract

The invention discloses a portable measuring device with adjustable depth for rock and soil geological survey, which comprises a bottom plate, a through hole is arranged in the middle of the bottom plate, a borehole sampling device is arranged above the through hole, and the borehole sampling device It includes a first rotating shaft, a drill bit is arranged below the first rotating shaft, a number of connecting drill rods are arranged between the drill bit and the first rotating shaft, and first flanges are arranged at both ends of the connecting drill rods, The connecting drill rods are respectively connected to the drill bit and the first rotating shaft through the second flange, the connecting drill rod is provided with a first helical leaf, and the inside of the connecting drill rod is provided with a cavity, so A rotating shaft is arranged inside the cavity. Beneficial effects: the device is simple in structure, easy to operate and use, and can sample rock and soil at different depths at one time, avoiding mixing of rock and soil at different depths during ascent, greatly increasing the safety of use and increasing the accuracy of sampling , to improve the accuracy of sampling measurement.

Description

technical field [0001] The invention relates to the design field of rock and soil geological survey measuring devices, in particular to a portable measuring device with adjustable depth for rock and soil geological survey. Background technique [0002] The contents of geotechnical engineering investigation mainly include: engineering geological investigation and surveying and mapping, exploration and taking soil samples, in-situ testing, indoor testing, on-site inspection and testing, and finally, according to several or all of the above methods, qualitative engineering geological conditions of the site Or quantitative analysis and evaluation, and prepare report documents that meet the needs of different stages. [0003] Geological prospecting is the survey and research activities of geological exploration and detection through various means and methods, determining the appropriate bearing layer, determining the foundation type and calculating the foundation parameters accor...

AI Technical Summary

Problems solved by technology

[0003] Geological prospecting is the survey and research activities of geological exploration and detection through various means and methods, determining the appropriate bearing layer, determining the foundation type and calculating the foundation parameters according to the foundation bearing capacity of the bearing layer. Excavate pits, grooves, wells, and holes for observation and detection, and measure the distance between the pits, which is convenient for making geological structure models. Because the bottom surface is usually in a state of unevenness, it is difficult to use tools such as tape measure to measure. The existing distance measurement methods mainly Theodolite and range finder are used to measure. This method of measurement is accurate and can measure the direct distance and the horizontal distance between the pits. However, in the existing geological drilling, the commonly used drilling rigs basically include diesel engines and winches, and the fuselage is heavy. , up to several hundred kilograms, and most of the construction sites cannot be transported mechanically, relying solely on manpower, which brings great inconvenience to the drilling work. At the same time, it is impossible to sample rocks and soils at different depths and bring them back to the room for testing during the drilling process. It increases the troublesomeness of use, so it is necessary to solve the above problems with a portable measuring device with adjustable depth for rock and soil geological survey

Images