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Earthquake inertia force calculation method for rock slope of Xigeda group stratum

A technology of rock slope and calculation method, applied in seismology, seismic signal processing, geophysical measurement, etc., can solve problems such as only considering the spatial effect of seismic waves, but not considering the time effect of seismic waves

Active Publication Date: 2020-08-28
KUNMING PROSPECTING DESIGN INST OF CHINA NONFERROUS METALS IND +1
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Problems solved by technology

In the current stability calculation of rock slopes, the quasi-static method is commonly used to calculate the seismic inertial force of the slope, but the quasi-static method only considers the spatial effect of seismic waves, and does not consider the time effect of seismic wave propagation. There are theoretical deficiencies in the calculation of the seismic inertial force of the Xigeda Formation rock slope

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  • Earthquake inertia force calculation method for rock slope of Xigeda group stratum
  • Earthquake inertia force calculation method for rock slope of Xigeda group stratum
  • Earthquake inertia force calculation method for rock slope of Xigeda group stratum

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Embodiment 1

[0065] Embodiment 1: as Figure 1-10 As shown, a seismic inertial force calculation method for Xigeda Formation rock slope, taking the Xigeda Formation rock slope as the research object; using the equivalent calculation method of rock mass parameters to simulate the Xigeda Formation The inhomogeneity of the rock slope; the calculation depth of the triangular unit is obtained by using the triangular unit discretization technique; and the seismic wave is assumed to be a simple harmonic sine wave, and the time effect of seismic wave propagation is simulated by the harmonic vibration theory, and the rock quality of the Xigeda Formation is established. The calculation model of the seismic acceleration of each unit of the slope; the establishment of the calculation model of the seismic inertia force of each unit of the Xigeda Formation rock slope. The calculation process of the method of the present invention is as figure 1 shown.

[0066] Further, the specific steps of the method...

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Abstract

The invention discloses an earthquake inertia force calculation method for a rock slope of a Xigeda group stratum, and belongs to the technical field of rock slope stability analysis. According to theinvention, an equivalent calculation method of rock mass parameters is adopted to simulate the nonuniformity of the rock mass distribution of the Xigeda group stratum; the spatial dispersion of the rock slope is realized by adopting the triangular units; meanwhile, seismic waves are assumed to be simple harmonic sine waves; a calculation mathematical model of the seismic inertia force of the rockslope of the Xigeda group stratum, which can consider the non-uniformity of rock mass distribution, the spatial effect of seismic wave propagation and the time effect at the same time, is established, so that the result of the seismic inertia force of the rock slope of the Xigeda group stratum acquired by the method is more accurate and convenient than that acquired by adopting a traditional method; the method can be applied to analysis of the seismic stability of the rock slope of the Xigeda group stratum, reliable and accurate seismic inertia force can be provided for slope design, and themethod is development and improvement of a rock slope seismic inertia force calculation method.

Description

technical field [0001] The invention relates to a method for calculating the seismic inertial force of rock slopes in Xigeda Formation, and belongs to the technical field of stability analysis of rock slopes. Background technique [0002] The Xigeda Formation is widely distributed in Panzhihua and Xichang areas of my country. It is a fluvial-lacustrine sedimentary strata formed between the Late Pleistocene and the Upper Tertiary. The Xigeda Formation is a set of semidiagenetic rocks interbedded with siltstone and claystones of different colors. The siltstone and claystone in the Xigeda Formation are extremely soft rocks with low compressive strength, tensile strength and shear strength, easy to soften and disintegrate. In recent years, large-scale infrastructure construction has been carried out in Panzhihua and Xichang areas, and a large number of rock slopes formed by the Xigeda Formation have been encountered. Due to the extremely poor engineering properties of the Xiged...

Claims

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/306G01V2210/624Y02A10/23
Inventor 刘文连李泽眭素刚陆得志唐果李江龙宁飞许汉华
Owner KUNMING PROSPECTING DESIGN INST OF CHINA NONFERROUS METALS IND
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