A kind of in-situ three-dimensional prospecting equipment and its prospecting method

Abstract

The present invention discloses an in-situ three-dimensional exploration apparatus. The in-situ three-dimensional exploration apparatus comprises a seismic source device and at least one receiving device; each of the receiving devices is arranged around the seismic source device and is located within the effective radius of the seismic source device; the first probing rod of the seismic source device is provided with a seismic source probe; and the second probing rods of each of the receiving devices are provided with a plurality of wave detectors for receiving and recording vibration waves generated by the seismic source probe. According to the in-situ three-dimensional exploration apparatus of the invention, the seismic source probe and the wave detectors are respectively installed on the probing rods of the seismic source device and the receiving devices; the probing rod provided with the seismic source probe and the probing rods provided with the wave detectors are matched with each other and are pressed into the ground; the wave detectors arranged around the seismic source probe receive sound waves emitted by the seismic source probe; stratum division and stratum characteristic analysis are performed according to the characteristics of the sound waves transmitted in strata and are received by the wave detectors; and therefore, a geologic engineering survey scope is expanded, and accurate judgment on the strata and stratum physical and mechanical indexes can be improved.

Description

technical field [0001] The invention relates to geological exploration equipment, in particular to an in-situ three-dimensional exploration equipment and an exploration method thereof. Background technique [0002] At present, the in-situ exploration equipment used in geological engineering survey mainly includes penetrating equipment and geophysical equipment. [0003] The penetrating equipment uses the penetrating power device on the ground to press the penetrating rod with the penetrating probe at the front end vertically into the ground, and the formation is carried out according to the change of the cone tip resistance of the penetrating probe and the frictional resistance of the side wall, that is, the relative hardness of the formation. divided. The measurement range and measurement accuracy of penetrating detection equipment have certain limits. [0004] The geophysical prospecting equipment includes an excitation source and a geophone. The sound wave emitted by th...

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Problems solved by technology

Both the seismic source probe and the geophone of the geophysical prospecting equipment are placed on the surface, and the judgment of the formation will have certain limitations. There is a dead angle between the sound wave of the seismic source and the geophone, which affects the accuracy of the physical and mechanical indicators of the stratum by the geophysical prospecting means

[0005] The application of penetration testing equipment and geophysical prospecting equipment are two different in-situ exploration methods, each with its own characteristics and limitations, and these two in-situ exploration work cannot be carried out at the same place at the same time

The penetration probe of the penetration detection equipment is directly pressed into the formation, and the measurement range of the penetration detection equipment can only understand the profile formation situation of one point, and the obtained formation information is limited; However, both the seismic source probe and the geophone are placed on the surface, and there is a dead angle in the propagation of sound waves between the seismic source and the geophone, and the measurement range is still limited, which affects the accurate judgment of the physical and mechanical indicators of the formation.

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