Geological condition real-time reflecting and advance detecting system and geological condition real-time reflecting and advanced detecting method applied to drilling rig

Abstract

The invention discloses a geological condition real-time reflecting and advanced detecting system and a geological condition real-time reflecting and advanced detecting method applied to a drilling rig. The geological condition real-time reflecting and advanced detecting system comprises the drilling rig, a high-precision rock stratum drilling exploration instrument, a drilling parameter real-time analyzing system for the drilling rig and drilling radar. The high-precision rock stratum drilling exploration instrument is provided with sensors for acquiring rock physical and mechanical property parameters in drilling procedures; the drilling radar comprises transmitting antennas and receiving antennas for detecting rock parameters of surrounding rocks within certain ranges around drilling bits and electromagnetic signals of unfavorable geological bodies such as water layers. The geological condition real-time reflecting and advanced detecting system and the geological condition real-time reflecting and advanced detecting method have the advantages that categories and physical and mechanical properties of rock strata within ranges of drilled hole diameters can be accurately measured by the aid of the drilling parameter real-time analyzing system of the geological condition real-time reflecting and advanced detecting system, conditions of the surrounding rock within the certain ranges of the drilling bits can be predicted by the aid of the drilling radar and can be displayed in rock stratum spreading graphs, and surrounding rock information such as crack angles, quantities and rock stratum boundaries of the surrounding rock further can be recorded by the aid of the high-precision rock stratum drilling exploration instrument.

Description

technical field [0001] The invention relates to the field of advanced detection of underground engineering geology, in particular to a real-time reflection and advanced detection system of geological conditions applied to drilling rigs. Background technique [0002] In the construction of underground engineering, the weak fault zone and unfavorable geological bodies of surrounding rocks cause great safety hazards to the engineering construction of tunnels or roadways. Therefore, we must find out the unfavorable geological bodies and Strength of surrounding rock ahead. At present, the detection of surrounding rock strength mainly adopts the method of drilling core sampling, and the time interval from the on-site coring to the experimental report is long by using the drilling method, which seriously restricts the construction progress and increases the project budget cost; The detection is mainly carried out by means of induced polarization and borehole radar. However, when t...

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Problems solved by technology

At present, the detection of surrounding rock strength mainly adopts the method of drilling core sampling, and the time interval from the on-site coring to the experimental report is long by using the drilling method, which seriously restricts the construction progress and increases the project budget cost; The detection is mainly carried out by means of induced polarization and borehole radar. However, when the borehole radar and induced polarization encounter complex stratum environments, there are often large errors in the detection results, and the simple hole test can only Ascertain the unfavorable geological conditions within the drilling range, the measurement range is small and the representativeness is poor

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