Static cone penetration facility and method for rock and soil geological surveying

Abstract

The invention relates to a static cone penetration facility and method for rock and soil geological surveying. The static cone penetration facility and method for rock and soil geological surveying are used for solving the problem that when a protection pipe is utilized to protect a penetration rod to conduct a static cone penetration test at present, much inconvenience exists. According to the static cone penetration facility for rock and soil geological surveying, a lifting plate is arranged above a supporting base, a rotary table is arranged on the lifting plate, and circular holes are formed in the centers of the lifting plate and the rotary table. Plug pins are arranged on the upper surface of the rotary table in the circumferential direction of the circular hole. Grooves which are matched with the plug pins are formed in the circumferential directions of a penetration rod and a protection pipe, and teeth are arranged at the lower end of the protection pipe. The static cone penetration method for rock and soil geological surveying comprises the steps that an inner pipe and the protection pipe are assembled together and fixed to the lifting plate; a motor is started, the end ofthe protection pipe downwards drills a hole, the motor is closed after the protection pipe arrives at the deepest point, the position of the protection pipe is kept, and the inner pipe is taken out;the penetration rod section located above the ground is taken down; and the penetration rod stretches into the protection pipe, a probe arrives at the bottom of the protection pipe and then is fixed to the lifting plate through the plug pins, and the static cone penetration test is conducted after the probe and a signal receiving device are well set.

Description

technical field [0001] The invention belongs to the technical field of rock and soil engineering exploration, and in particular relates to a static sounding equipment and a static sounding method for rock and earth geological exploration. Background technique [0002] As an in-situ test method that can directly provide the comprehensive mechanical properties of foundation soil, static penetration testing is also an engineering geological exploration method with detailed layers and accurate layers. It is widely used in the field of geotechnical engineering exploration and Trusted. Static CPT refers to using the pressure device to press the penetrating rod with the probe into the test soil layer, and through the measurement system to measure the penetration resistance of the soil, some basic physical and mechanical properties of the soil can be determined, such as the deformation mode of the soil. volume, the allowable bearing capacity of the soil, etc. There are three types...

AI Technical Summary

Problems solved by technology

[0003] The first object of the present invention is to provide a static penetration testing equipment for rock and soil geological survey, to solve the problem that there are many inconveniences in the static penetration testing of the protective pipe protection probe

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