CN111931374A - Typhoon area landslide stability evaluation method - Google Patents

Typhoon area landslide stability evaluation method Download PDF

Info

Publication number
CN111931374A
CN111931374A CN202010799455.XA CN202010799455A CN111931374A CN 111931374 A CN111931374 A CN 111931374A CN 202010799455 A CN202010799455 A CN 202010799455A CN 111931374 A CN111931374 A CN 111931374A
Authority
CN
China
Prior art keywords
landslide
typhoon
safety
safety factor
rainfall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010799455.XA
Other languages
Chinese (zh)
Other versions
CN111931374B (en
Inventor
闫金凯
王文沛
李海龙
刘凯
王志辉
任天翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chinese Academy of Geological Sciences
Original Assignee
Chinese Academy of Geological Sciences
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chinese Academy of Geological Sciences filed Critical Chinese Academy of Geological Sciences
Priority to CN202010799455.XA priority Critical patent/CN111931374B/en
Publication of CN111931374A publication Critical patent/CN111931374A/en
Application granted granted Critical
Publication of CN111931374B publication Critical patent/CN111931374B/en
Priority to PCT/CN2021/116321 priority patent/WO2022033601A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • G06Q50/26—Government or public services
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Tourism & Hospitality (AREA)
  • Educational Administration (AREA)
  • Economics (AREA)
  • Geometry (AREA)
  • Development Economics (AREA)
  • Evolutionary Computation (AREA)
  • Computer Hardware Design (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Resources & Organizations (AREA)
  • Marketing (AREA)
  • Primary Health Care (AREA)
  • Strategic Management (AREA)
  • General Business, Economics & Management (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

The invention discloses a landslide stability evaluation method in a typhoon area, which comprises the steps of acquiring each parameter of landslide safety coefficient calculation by collecting geological survey reports or by means of investigation and test; acquiring typhoon level, wind direction, rain intensity and duration parameters according to meteorological information of a typhoon area; calculating a safety factor FS influenced by the property of the slope body according to the acquired parameters1Safety factor FS influenced by rainfall2And safety factor FS affected by wind load3(ii) a And calculating the landslide safety coefficient of the typhoon area according to the obtained safety coefficients, and evaluating the landslide stability of the typhoon area by using the obtained landslide safety coefficient. According to the method, the influence of the typhoon load is considered in the safety coefficient calculation of the typhoon area landslide, so that the stability evaluation of the typhoon area landslide is more practical, and the practicability is improved.

Description

Typhoon area landslide stability evaluation method
Technical Field
The invention relates to the technical field of landslide stability research, in particular to a landslide stability evaluation method in a typhoon area.
Background
At present, typhoon landing is carried out for multiple times every year in coastal areas, typhoon rainstorm induces a large amount of geological disasters, most slopes in the influence range are simultaneously acted by typhoon loads and rainstorm after the typhoon landing, and the typhoon wind level generally reaches dozens of levels, so that the wind load is a non-negligible factor of landslide. The vegetation is luxuriant in the southeast coastal region, and wind load acts on the vegetation, can exert the effect to the vegetation, and this power can be transmitted to the slope body through the vegetation, leads to the stress state of landslide to change to influence the stability of landslide.
In the prior art, the calculation of the landslide safety coefficient in the typhoon area only considers the influence of rainstorm and does not consider the influence of typhoon load on landslide, the evaluation of the typhoon rainstorm type landslide is generally processed according to the common rainfall type landslide, and the landslide safety coefficient considering the wind load action has no scientific and reasonable solution.
Disclosure of Invention
The invention aims to provide a typhoon area landslide stability evaluation method, which considers the influence of typhoon load in the safety coefficient calculation of the typhoon area landslide, so that the stability evaluation of the typhoon area landslide is more practical, and the practicability is improved.
The purpose of the invention is realized by the following technical scheme:
a method for evaluating stability of landslide in a typhoon area comprises the following steps:
step 1, acquiring each parameter of landslide safety coefficient calculation by collecting geological survey reports or by means of investigation and test;
step 2, acquiring typhoon level, wind direction, rain intensity and duration parameters according to meteorological information of the typhoon area;
step 3, calculating a safety factor FS influenced by the property of the slope body according to the parameters obtained in the step 1 and the step 21Safety factor FS influenced by rainfall2And safety factor FS affected by wind load3；
And 4, calculating the landslide safety coefficients of the typhoon area according to the safety coefficients obtained in the step 3, and evaluating the landslide stability of the typhoon area by using the obtained landslide safety coefficients.
According to the technical scheme provided by the invention, the influence of typhoon load is considered in the safety coefficient calculation of the typhoon area landslide by the method, so that the stability evaluation of the typhoon area landslide is more practical, and the practicability is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for evaluating stability of a landslide in a typhoon area according to an embodiment of the present invention;
fig. 2 is a schematic sectional view of a model used for calculating the landslide safety coefficient of the typhoon area according to the embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The following will describe an embodiment of the present invention in further detail with reference to the accompanying drawings, and as shown in fig. 1, a schematic flow chart of a method for evaluating landslide stability in a typhoon area provided by the embodiment of the present invention is shown, where the method includes:
step 1, acquiring each parameter of landslide safety coefficient calculation by collecting geological survey reports or by means of investigation and test;
step 2, acquiring typhoon level, wind direction, rain intensity and duration parameters according to meteorological information of the typhoon area;
step 3, calculating a safety factor FS influenced by the property of the slope body according to the parameters obtained in the step 1 and the step 21Safety factor FS influenced by rainfall2And safety factor FS affected by wind load3；
In this step, as shown in fig. 2, a schematic cross-sectional view of a model adopted for calculating a landslide safety factor of a typhoon area according to an embodiment of the present invention is shown, and with reference to fig. 2:
safety factor FS influenced by slope body property1Obtained by the following formula:
Figure BDA0002626857770000021
wherein, FS1The safety factor is influenced by the property of the slope body;
Figure BDA0002626857770000022
is the internal friction angle of the soil body; alpha is the gradient; c is soil mass cohesion; gamma raysIs the volume weight of the soil body; z is the vertical thickness of the soil layer;
safety factor FS influenced by rainfall2Obtained by the following formula:
Figure BDA0002626857770000031
wherein psi0(Z) is stable matric potential distribution which corresponds to the stable seepage condition of the slope under the initial water content calculated under the condition of not considering rainfall; gamma raywIs the volume weight of water; gamma raysIs the volume weight of the soil body; i isZThe intensity of rainfall is used; kZIs the vertical saturation permeability coefficient; r (t)*) As a function of matric potential response; t is t*Calculating time for normalization; t is*Is the standardized rainfall time.
In a specific implementation, the matric potential response function R (t)*) Obtained by the following formula:
Figure BDA0002626857770000032
Figure BDA0002626857770000033
Figure BDA0002626857770000034
wherein t is time; d0The maximum matrix potential diffusion capacity of the soil; alpha is a slope angle (alpha is more than or equal to 0 and less than or equal to 90 degrees); t is the duration of the rainfall.
Factor of safety FS influenced by wind load3Obtained by the following formula:
Figure BDA0002626857770000035
wherein v is the wind speed; d is the maximum width of the crown; l is the crown height; n is the number of trees on the slope body in unit area; beta is the included angle between the wind direction and the slope direction.
And 4, calculating the landslide safety coefficients of the typhoon area according to the safety coefficients obtained in the step 3, and evaluating the landslide stability of the typhoon area by using the obtained landslide safety coefficients.
In this step, the landslide safety factor of the typhoon zone is influenced by the safety factor FS affected by the properties of the slope body1Safety factor FS influenced by rainfall2And safety factor FS affected by wind load3The composition is obtained by the following formula:
FS＝FS1+FS2+FS3。
it is noted that those skilled in the art will recognize that embodiments of the present invention are not described in detail herein.
In conclusion, the method provided by the embodiment of the invention considers the influence of the typhoon load in the safety coefficient calculation of the typhoon area landslide, so that the stability evaluation of the typhoon area landslide is more practical, and the practicability is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. A method for evaluating landslide stability in a typhoon area is characterized by comprising the following steps:
step 1, acquiring each parameter of landslide safety coefficient calculation by collecting geological survey reports or by means of investigation and test;
step 2, acquiring typhoon level, wind direction, rain intensity and duration parameters according to meteorological information of the typhoon area;
step 3, calculating a safety factor FS influenced by the property of the slope body according to the parameters obtained in the step 1 and the step 21Safety factor FS influenced by rainfall2And safety factor FS affected by wind load3；
And 4, calculating the landslide safety coefficients of the typhoon area according to the safety coefficients obtained in the step 3, and evaluating the landslide stability of the typhoon area by using the obtained landslide safety coefficients.
2. The typhoon area landslide stability evaluation method according to claim 1, wherein in step 3, a safety factor FS affected by the property of the slope body1Obtained by the following formula:
Figure FDA0002626857760000011
wherein, FS1Is the nature of the slopeThe safety factor of the influence;
Figure FDA0002626857760000012
is the internal friction angle of the soil body; alpha is the gradient; c is soil mass cohesion; gamma raysIs the volume weight of the soil body; z is the vertical thickness of the soil layer;
safety factor FS influenced by rainfall2Obtained by the following formula:
Figure FDA0002626857760000013
wherein psi0(Z) is stable matric potential distribution which corresponds to the stable seepage condition of the slope under the initial water content calculated under the condition of not considering rainfall; gamma raywIs the volume weight of water; gamma raysIs the volume weight of the soil body; i isZThe intensity of rainfall is used; kZIs the vertical saturation permeability coefficient; r (t)*) As a function of matric potential response; t is t*Calculating time for normalization; t is*The standardized rainfall time;
factor of safety FS influenced by wind load3Obtained by the following formula:
Figure FDA0002626857760000014
wherein v is the wind speed; d is the maximum width of the crown; l is the crown height; n is the number of trees on the slope body in unit area; beta is the included angle between the wind direction and the slope direction.
3. The typhoon area landslide stability evaluation method according to claim 2, wherein the matric potential response function R (t)*) Obtained by the following formula:
Figure FDA0002626857760000021
Figure FDA0002626857760000022
Figure FDA0002626857760000023
wherein t is time; d0The maximum matrix potential diffusion capacity of the soil; alpha is a slope angle; t is the duration of the rainfall.
4. The typhoon area landslide stability evaluation method according to claim 1, wherein in step 4, the landslide safety factor of the typhoon area is a safety factor FS affected by the property of the slope body1Safety factor FS influenced by rainfall2And safety factor FS affected by wind load3The composition is obtained by the following formula:
FS＝FS1+FS2+FS3。
CN202010799455.XA 2020-08-11 2020-08-11 Typhoon area landslide stability evaluation method Active CN111931374B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010799455.XA CN111931374B (en) 2020-08-11 2020-08-11 Typhoon area landslide stability evaluation method
PCT/CN2021/116321 WO2022033601A1 (en) 2020-08-11 2021-09-02 Typhoon area landslide stability evaluation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010799455.XA CN111931374B (en) 2020-08-11 2020-08-11 Typhoon area landslide stability evaluation method

Publications (2)

Publication Number Publication Date
CN111931374A true CN111931374A (en) 2020-11-13
CN111931374B CN111931374B (en) 2021-08-03

Family

ID=73307493

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010799455.XA Active CN111931374B (en) 2020-08-11 2020-08-11 Typhoon area landslide stability evaluation method

Country Status (2)

Country Link
CN (1) CN111931374B (en)
WO (1) WO2022033601A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112733069A (en) * 2021-01-13 2021-04-30 中国地质科学院 Typhoon area bamboo forest landslide safety coefficient calculation method
WO2022033601A1 (en) * 2020-08-11 2022-02-17 中国地质科学院 Typhoon area landslide stability evaluation method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140359007A1 (en) * 2010-11-30 2014-12-04 Gary W. Grube Obtaining event response information
CN104951993A (en) * 2014-09-04 2015-09-30 国网山东省电力公司应急管理中心 Comprehensive monitoring and early warning system based on meteorology and power grid GIS and method thereof
CN107391949A (en) * 2017-08-02 2017-11-24 中国地质环境监测院 A kind of lower system of taproot arbor of typhoon effect causes the computational methods that slope is ftractureed
CN107423519A (en) * 2017-08-02 2017-12-01 中国地质环境监测院 A kind of Heavy Rain of Typhoon type shallow failure safety coefficient computational methods
CN109614760A (en) * 2019-01-21 2019-04-12 北京科技大学 A kind of Stability Analysis Methods for Evaluating Landslide and evaluating apparatus
CN109826243A (en) * 2018-12-21 2019-05-31 中国地质科学院地质力学研究所 Rock mass test test macro and method under a kind of three water coincidences effect

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111191936B (en) * 2019-12-31 2020-09-15 深圳市国家气候观象台 Typhoon, wind and rain comprehensive influence index calculation method and storage device
CN111931374B (en) * 2020-08-11 2021-08-03 中国地质科学院 Typhoon area landslide stability evaluation method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140359007A1 (en) * 2010-11-30 2014-12-04 Gary W. Grube Obtaining event response information
CN104951993A (en) * 2014-09-04 2015-09-30 国网山东省电力公司应急管理中心 Comprehensive monitoring and early warning system based on meteorology and power grid GIS and method thereof
CN107391949A (en) * 2017-08-02 2017-11-24 中国地质环境监测院 A kind of lower system of taproot arbor of typhoon effect causes the computational methods that slope is ftractureed
CN107423519A (en) * 2017-08-02 2017-12-01 中国地质环境监测院 A kind of Heavy Rain of Typhoon type shallow failure safety coefficient computational methods
CN109826243A (en) * 2018-12-21 2019-05-31 中国地质科学院地质力学研究所 Rock mass test test macro and method under a kind of three water coincidences effect
CN109614760A (en) * 2019-01-21 2019-04-12 北京科技大学 A kind of Stability Analysis Methods for Evaluating Landslide and evaluating apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
WALTER W. CHEN 等: "Landslide site reconstruction with terrestrial laser scanning", 《2010 18TH INTERNATIONAL CONFERENCE ON GEOINFORMATICS》 *
王照财 等: "台风作用下植被对斜坡稳定性影响的物理模拟", 《自然灾害学报》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022033601A1 (en) * 2020-08-11 2022-02-17 中国地质科学院 Typhoon area landslide stability evaluation method
CN112733069A (en) * 2021-01-13 2021-04-30 中国地质科学院 Typhoon area bamboo forest landslide safety coefficient calculation method
CN112733069B (en) * 2021-01-13 2021-12-14 中国地质科学院 Typhoon area bamboo forest landslide safety coefficient calculation method

Also Published As

Publication number Publication date
WO2022033601A1 (en) 2022-02-17
CN111931374B (en) 2021-08-03

Similar Documents

Publication Publication Date Title
Shao et al. Drought characteristics over China during 1980–2015
Samba et al. Rainfall variability in Congo‐Brazzaville: 1932–2007
Liu et al. Multi-perspective analysis of vegetation cover changes and driving factors of long time series based on climate and terrain data in Hanjiang River Basin, China
CN111931374B (en) Typhoon area landslide stability evaluation method
Singh et al. The wet and dry spells across India during 1951–2007
Lana‐Renault et al. Comparative analysis of the response of various land covers to an exceptional rainfall event in the central Spanish Pyrenees, October 2012
CN102034002A (en) Method for designing high-resolution full distributed hydrological model TOPX
Alfaro-Sánchez et al. Growth and reproduction respond differently to climate in three Neotropical tree species
Ciftci et al. Analysis of the probability of failure for open-grown trees during wind storms
CN108764688A (en) The wet stain of winter wheat of based on star multi-source precipitation data fusion does harm to remote-sensing monitoring method
Wetzel et al. Role of land surface in controlling daytime cloud amount: Two case studies in the GCIP‐SW area
Lozano-Parra et al. Climate and topographic controls on simulated pasture production in a semiarid Mediterranean watershed with scattered tree cover
Li et al. Long‐term hydrological response to reforestation in a large watershed in southeastern China
Guo et al. The influence of temperature and precipitation on the vegetation dynamics of the tropical island of Hainan
Kopp et al. The summer 2021 Switzerland hailstorms: weather situation, major impacts and unique observational data
Marquardt et al. Variable climate response differentiates the growth of Sky Island Ponderosa Pines
Lin et al. Causes of spatial patterns of dead trees in forest fragments in Illinois
YASIN et al. Spatial distribution of tree species composition and carbon stock in Tozi tropical dry forest, Sinnar State, Sudan
Sánchez et al. Analysis of mesoscale convective systems with hail precipitation
Maxwell et al. United States drought of 2007: historical perspectives
Adenodi A centurial analysis of rainfall variability in Nigeria
Friesen et al. Spatio-temporal rainfall patterns in Northern Ghana
CN112733069B (en) Typhoon area bamboo forest landslide safety coefficient calculation method
Arellano‐Leyva et al. Rainfall retention and runoff generation processes in tropical mature green roof ecosystems
Umakanth et al. Increasing pre-monsoon rain days over four stations of Kerala, India

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information

Inventor after: Yan Jinkai

Inventor after: Wang Wenpei

Inventor after: Li Hailong

Inventor after: Liu Lei

Inventor after: Liu Kai

Inventor after: Wang Zhihui

Inventor after: Ren Tianxiang

Inventor before: Yan Jinkai

Inventor before: Wang Wenpei

Inventor before: Li Hailong

Inventor before: Liu Kai

Inventor before: Wang Zhihui

Inventor before: Ren Tianxiang

CB03 Change of inventor or designer information
GR01 Patent grant
GR01 Patent grant