6 results about "Thrust fault" patented technology

This invention relates to the field of slope stability technology, and more particularly to a slope stability optimization and reinforcement method based on fault sliding mode. The method includes the following steps: acquiring basic information of the target slope, determining the slope's state data by combining geological conditions and geometric information, detecting the fault zone's strike trend based on geological data, performing bedding-parallel sliding detection on the slope state, analyzing the cumulative increase of sliding stress, performing reverse fault jacking detection, estimating the slope's progressive failure trend by combining sliding stress and jacking conditions, determining the slope stability decay based on the failure growth trend, tracing the source data of missing stability data, and performing reinforcement optimization calculations to derive a reinforcement scheme. This invention achieves greater slope stability through slope reinforcement.

The application discloses a tunnel model experiment system and method for simulating fault dip-slip and strike-slip effects, can more truly restore the dynamic response of a tunnel crossing an active fault under the action of a strong earthquake and the action of an earthquake under faulting, can simulate faults with different faulting mechanisms, can simulate the properties of faults with strike-slip faulting (left rotation or right rotation) and dip-slip faulting (normal fault or reverse fault) at the same time, and solves the problem that a current traditional shaking table model box cannot simultaneously simulate different strike-slip faulting types and different dip-slip faulting.

The present application relates to the field of geological science, and particularly relates to a thrust fault structure simulation test system, which comprises a simulation box formed by two relatively slidable box bodies, the box body comprises a box bottom plate and oppositely arranged box side plates, the box side plates and the box bottom plate form a box frame; a baffle is arranged on the inner side surface of the box side plate, and the upper surface of the box bottom plate is provided with a stacking area; a stacking plate is placed on the stacking area, and the stacking plate comprises a plurality of mutually stacked push blocks; the system further comprises a force applying part for applying extrusion force to the box frame so that the two box bodies are close to each other; a driving part for relatively moving the two box bodies in the vertical direction; and an auxiliary part for applying an external force to each push block in the stacking plate periodically towards the inside of the simulation box. Through the device, the vibration change of the simulated stratum in the process of forming the thrust fault is closer to the damage condition of the real stratum in the process of forming the thrust fault, so that the result of the simulation test is more accurate.

The application discloses a method and system for palaeogeomorphology recovery of reef flat facies, comprising: obtaining stratum boundary characteristics, stratum thickness and fault distribution characteristics according to depth domain seismic data of target reef flat facies stratum, then identifying synsedimentary faults and epigenetic reverse faults, and determining breakpoints matched with the epigenetic reverse faults and reverse fault repetition zones; dividing the epigenetic reverse faults into upper and lower plates, obtaining dip angle attributes of each plate at corresponding breakpoints, and further extending the boundaries of each plate with the breakpoints as starting points to obtain residual thicknesses of each plate, on the basis of which, the thicknesses of each plate are obtained in combination with the stratum boundary characteristics and the stratum thicknesses; respectively for the synsedimentary faults and the epigenetic reverse faults, displacement amounts and strike-slip components causing topographic repetition are obtained, and then the identified faults are integrated into the same coordinate system in combination with the thicknesses of each plate, so that corresponding palaeogeomorphology recovery results are obtained. The application can accurately realize palaeogeomorphology recovery of reef flat facies.

The application discloses a fault stick-slip motion test device considering the viscoelastic plasticity influence of a geological environment, which comprises a shell, a hydraulic push rod, variable constitutive relation members and stress transmission members in the shell; wherein the clamping plates of the two stress transmission members are opposite to each other, and the space between the two clamping plates is a placement cavity for a compression-shear sample; the transmission arms of the two stress transmission members are connected with four corresponding variable constitutive relation members, including three passive variable constitutive relation members installed and positioned on the shell, and one active variable constitutive relation member installed on the hydraulic push rod, and the adapter plate of the active variable constitutive relation member is installed with a displacement meter at the base of the hydraulic push rod; and the data of the displacement meter is collected and processed by a computer. The test scheme of the device simultaneously considers the active member and the passive member, the active stress and the passive stress loading forms in the fault are clear, and the loading state of the reverse fault in the actual situation is more suitable.

This invention provides a method and apparatus for distinguishing between knee faults and faults, comprising: acquiring seismic data of a target area, the seismic data including the geometric characteristics of seismic wave groups; obtaining a seismic profile based on the seismic data, the seismic profile including folds composed of multiple strata; identifying a template stratum and multiple extension lines in the multiple strata, the template stratum being a continuous, unbroken, high-peak reflection layer; identifying multiple extension layers in the seismic profile based on the template stratum and multiple extension lines; and outputting a determination result based on the geometric characteristics of the seismic wave groups and the geometric characteristics of each extension layer. The method for distinguishing between knee faults and faults of this invention directly and accurately determines whether a compressional structural zone in the oil and gas exploration process is a knee fault, a high-angle thrust fault, or a regulating fault using seismic data. This ensures the accuracy of seismic detection, provides important guidance for the deployment of oil and gas exploration and development drilling, and improves the success rate of oil and gas exploration drilling.