CN108898529A - Cut the Landslide hazard judgment method and application on slope in a kind of In The Granite Area - Google Patents
Cut the Landslide hazard judgment method and application on slope in a kind of In The Granite Area Download PDFInfo
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- 238000011160 research Methods 0.000 abstract description 17
- 230000007246 mechanism Effects 0.000 abstract description 5
- 238000012876 topography Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 32
- 238000005520 cutting process Methods 0.000 description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000008595 infiltration Effects 0.000 description 6
- 238000001764 infiltration Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- OVBPIULPVIDEAO-LBPRGKRZSA-N folic acid Chemical compound C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-LBPRGKRZSA-N 0.000 description 4
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- 239000004927 clay Substances 0.000 description 3
- 239000002734 clay mineral Substances 0.000 description 3
- FEPMHVLSLDOMQC-UHFFFAOYSA-N virginiamycin-S1 Natural products CC1OC(=O)C(C=2C=CC=CC=2)NC(=O)C2CC(=O)CCN2C(=O)C(CC=2C=CC=CC=2)N(C)C(=O)C2CCCN2C(=O)C(CC)NC(=O)C1NC(=O)C1=NC=CC=C1O FEPMHVLSLDOMQC-UHFFFAOYSA-N 0.000 description 3
- 241000755729 Clivia Species 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RVRCFVVLDHTFFA-UHFFFAOYSA-N heptasodium;tungsten;nonatriacontahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[W].[W].[W].[W].[W].[W].[W].[W].[W].[W].[W] RVRCFVVLDHTFFA-UHFFFAOYSA-N 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241001553014 Myrsine salicina Species 0.000 description 1
- 239000005442 atmospheric precipitation Substances 0.000 description 1
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- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
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Abstract
The invention discloses the Landslide hazard judgment methods that slope is cut in a kind of In The Granite Area, which is characterized in that includes the following steps：A, the slip mass length of grade L on slope, slip mass gradient α, landslide bulk area A, slip mass upside area A are manually cut in field investigation mapping In The Granite AreauWith slip mass upper side gradient β；B, the terrain generalization Assessing parameters T that slope is manually cut in In The Granite Area is calculated according to T=S+1.9U；C, slope Landslide hazard is manually cut to granite with slip mass length of grade L and terrain generalization Assessing parameters T to differentiate；The present invention carries out internal mechanism research to landslide occurrence degree by research orographic factor, establish the risk computation model that granite manually cuts the slope and land slide on slope, it is with strong points, by the influence of topography factor for considering manually to cut the slope and land slide on slope comprehensively, Landslide hazard region is accurately divided in quantitative mode, division precision has been effectively ensured.
Description
Technical field
The present invention relates to manually cut hill wash slope prevention and control field more particularly to the landslide hazard on slope is cut in a kind of In The Granite Area
Property judgment method and application.
Background technique
Manually cut domatic at new side slope be widely distributed in low mountain and knob, the especially low mountain in east in China
The knob and.
Due to people's income increase, per-capita housing is also continuously increased, and original house is no longer satisfied local resident
Growing life requirement needs to build new building again.But China arable land is less, to protect farmland, when will lid new house again,
Then only look for another way.It is exactly unique admissible method in the local-style dwelling houses house site that domatic Cheng Xin is cut on low mountain side.In order to reduce
Cost is built, it is generally selecting for residents that the slope gradient is cut in increase, but heavy grade brings security risk again：It is original manually to cut slope
It just brings unstable, the very big slope gradient of cutting to keep side slope more unstable, under larger rainfall induction, often will form landslide.Cause
This makes accurate judgment to such slope and land slide risk for manually cutting slope extremely important.The side for manually cutting slope of In The Granite Area
Hill wash slope generally requires have two conditions：Be conducive to occur the orographic condition of shallow-layer landslide o earth slope；Abundant rainfall
Infiltrate the generation for entering the soil body and final induced landslide.These condition combined influences and the stability for determining the slope surface soil body.Wherein,
Orographic condition includes to the influence factor for the slope and land slide for manually cutting slope：The ramp slope of potential slip mass, slip mass upside are slow
Hillside fields shape.Potential slip mass two sides are usually plane, are not influenced on landslide；Generally without free face on the downside of potential slip mass, but
It is that slip mass still can cut to form landslide.
Currently, domestic and foreign scholars are to the slope and land slide for manually cutting slope, there are no enough researchs.It is formed to shallow failure
The research of orographic condition focuses primarily upon the research of the slope surface gradient, is not had to the simple data statistics of its distribution rule
Further investigate its inherent mechanism (engineering geology journal, 2013,21:607-612；HYDROELECTRIC ENERGY science, 2014,32:119-122；
Mountain research, 2015,33:108-115；Rock-soil mechanics, 2006,27:1393-1397；Rock-soil mechanics, 2007,28:2046-
2010；Geological disaster and environment protect, and 2000,11:145-146；Geographical infor mation systems in
assessing natural hazards,1995,135-175；Toro nto,1984,307-323；Earth Surface
Processes and Landforms,1993,18:579-591；The Netherlands.1995,93-106；
Geomorphology,1998,24:309-331.), research achievement is difficult to other regions.In addition to the slope surface gradient is sliding to shallow-layer
Outside the influence on slope, influence of the factors such as upstream, the left and right sides and downstream of shallow failure sensitizing range to shallow failure has on a small quantity
Research, but be mostly focused on qualitative research and describe the influence of single factors, few quantitative calculation methods such as consider upstream
Computation model (Water resources research, 1994,4:1153-1171；Math Geol,1983,15:403-
426；Processes La ndforms,1991,16:427-445.).The judgment method of these above-mentioned rough gradients and single
The accuracy that judges for shallow-layer soil property Landslide hazard of orographic factor research it is poor.
Publication No. CN 104805846A, publication date are that on 07 29th, 2015 Chinese patent literatures disclose one kind
The risk division methods of superficial layer landslide o earth slope, it is characterised in that：It is surveyed and drawn by field investigation and determines slip mass basically
Graphic data studies the relationship of the gradient and the top gradient and length, two sides side grade and width and the lower part gradient and length respectively,
And above-mentioned relation association study is finally established into more accurate superficial in conjunction with the mechanism of action of each influence factor in landslide
The easy hair computation model of layer landslide o earth slope determines that the risk of superficial layer landslide o earth slope divides rank.
Publication No. CN 105804094A, publication date are that on 07 27th, 2016 Chinese patent literatures disclose one kind
The risk judgment method of rock landslip, which is characterized in that include the following steps：A, it is surveyed and drawn by field investigation and determines slip mass
Basic terrain data：Slip mass gradient α, come down bulk area A, slip mass upper side area Au, slip mass upper side gradient β,
Slip mass left side area AL, slip mass left side hypsography gradient θ1, slip mass right side area AR, slip mass right side
Hypsography gradient θ2；B, upper steep terrain factor U, two sides multi-stress C are calculated；C, terrain generalization Assessing parameters T is calculated again；d,
The Hazard rank of rock landslip is divided.
Using above patent document as the prior art of representative, the landslide o earth slope or rock matter primarily directed to Based on Red Bed are sliding
Slope, it is not applicable in other areas, it cannot judge the Landslide hazard for manually cutting slope side slope；And these researchs are only used for natural side
Slope, the gradient of potential slip mass is often at 45 degree hereinafter, substantially can not be at 50 degree or more.Because of the gradient of potential slip mass
When greater than 50 degree or without soil layer or all slide.And the artificial of In The Granite Area cuts the gradient on slope substantially all 50
Degree or more, without free face, two sides are also without charge for remittance.The side slope for manually cutting slope has different featuress of terrain from natural side slope,
Therefore landslide is more readily formed in the side slope for manually cutting slope, and risk is higher.
Summary of the invention
The present invention in order to overcome the defects of the prior art described above, provides a kind of Landslide hazard that slope is cut in In The Granite Area and sentences
Disconnected method and application, the present invention carry out internal mechanism research to landslide occurrence degree by research orographic factor, establish Hua Gang
Rock manually cuts the risk computation model of the slope and land slide on slope, with strong points, passes through the slope and land slide for considering manually to cut slope comprehensively
Influence of topography factor, Landslide hazard region is divided accurately in quantitative mode, division precision has been effectively ensured.
The present invention is achieved through the following technical solutions：
Cut the Landslide hazard judgment method on slope in a kind of In The Granite Area, which is characterized in that include the following steps：
A, the slip mass length of grade L on slope, slip mass gradient α, landslide bulk area are manually cut in field investigation mapping In The Granite Area
A, area A on the upside of slip massuWith slip mass upper side gradient β；
B, the terrain generalization Assessing parameters T that slope is manually cut in In The Granite Area is calculated according to formula 1；
T=S+1.9U formula 1
In formula, T is terrain generalization Assessing parameters；S is slip mass slope factor, is calculated and is determined according to formula 2；U be it is upper slowly
The shape factor is calculated according to formula 3 and is determined；
S=tan α formula 2
U=tan (alpha-beta) Au/ A formula 3
In formula, α is the slip mass gradient, unit °；AuFor area on the upside of slip mass, unit m2；A is landslide bulk area, unit
m2；β is the slip mass upper side gradient, unit °, β < α；
As β >=α, if tan (alpha-beta) Au/ A=0；
C, slope Landslide hazard is manually cut to granite with slip mass length of grade L and terrain generalization Assessing parameters T to differentiate；
Slip mass length of grade L very little, is difficult to come down；In the smallest slip mass length of grade L or more, terrain generalization Assessing parameters T is bigger, danger
Dangerous bigger, terrain generalization Assessing parameters T is smaller, and risk is smaller.
Slope Landslide hazard is manually cut to granite by Hazard rank to differentiate；
As slip mass length of grade L < 3m, granite manually cuts slope Landslide hazard very little；
As slip mass length of grade L >=3m and T < 2.85, then granite manually cuts slope Landslide hazard very little；
As slip mass length of grade L >=3m and 2.85≤T < 3.30, then it is small manually to cut slope Landslide hazard for granite；
As slip mass length of grade L >=3m and 3.30≤T < 3.65, then it is medium manually to cut slope Landslide hazard for granite；
As slip mass length of grade L >=3m and T >=3.65, then it is big manually to cut slope Landslide hazard for granite.
The present invention is suitable for the judgement that slope Landslide hazard is manually cut in the In The Granite Area that slip mass gradient α is 53 ° -55 °.
Basic principle of the invention is as follows：
The slope and land slide for manually cutting slope occurs mainly on the soil body excavated in the recent period, and slopes are loosely organized to have larger hole
The feature stronger than, water penetration, such landslide, vulnerable to Atmospheric precipitation and reservoir level cyclic effects, are stablized since slip mass is loose
Property is poor.
The side slope for manually cutting slope belongs to soil-slope, and soil layer belongs to stack layer, is shape after protolith weathering and short-haul operation
At stack layer, therefore the characteristic of soil is mainly by the lithologic character controlling of protolith.In the characteristic of soil, infiltration coefficient and clay mine
Influence of the object to landslide is maximum.The infiltration coefficient of soil is bigger, and water flow caused by rainfall is more easily accessible soil, and water flow is in soil
In under when being seeped into fluid-tight water barrier, water level lifting increases self weight and the sliding force of soil layer, and bottom friction power reduces, and soil layer is got over
It is easy to happen landslide.The viscosity of the clay mineral of soil is stronger, and clay content is more, there is more, the drying that will absorb water when rainfall
When, will shrink more, form bigger crack；Crack is bigger, and the easier suitable crack of the production stream of rainfall enters soil, and water flow exists
When flowing to fluid-tight water barrier, water level lifting increases self weight and the sliding force of soil layer, and bottom friction power reduces, and soil layer is easier
It comes down.Therefore, the particle for the stack layer soil that protolith weathering is formed is thicker, and infiltration coefficient is bigger, is more easy to happen cunning
Slope；The viscosity of the clay mineral for the stack layer soil that protolith weathering is formed is stronger, and clay content is more, is more easy to happen landslide.
The risk for manually cutting hill wash slope, the critical value that rainfall induced landslide occurs and the administration way on landslide in different lithology region
Deng all there is very big difference.
Granite is one kind of magmatic rock, be distributed on the earth's crust it is most wide, be magma in crust depth gradually cooling condenses into
Crystalline rock masses, main component is quartz, feldspar and mica, contains a small amount of melanocratic mineral.The stack layer that Weathered Granite is formed
The main mineral constituent of soil is quartz, kaolinite, but kaolinic clay mineral viscosity is very weak.It is formed by Weathered Granite
Stack layer soil based on the grains of sand, be sandy soil, the infiltration coefficient of soil is larger.It is this kind of manually to cut slope side slope and be easy to occur
Landslide.
The gradient is the main factor for influencing landslide and occurring, and the suddenly slow of the hillside gradient not only influences the poly- of loose fines substance
Collection and distribution, and slope concentration condition is influenced, the slope in 50-70 ° of the gradient occurs for most of slope and land slides for manually cutting slope
Degree is too slow, and landslide is short of power, and can not occur；The gradient is too steep, then in the digging process of slope surface may unstability, sent out
Raw landslide.Steep landform is conducive to rain infiltration into potential slip mass under above delaying, and then the soil body is caused gradually to be saturated and soften, base
Matter suction and shearing strength are gradually reduced, and the soil body failure by shear locally occurs and generates shear crack, and rainwater constantly penetrates into these
Crack makes its full water, and pore water pressure increases to form excess pore water pressure, and shear crack gradually extends connection and forms shear surface, soil
Body intensity further decreases, and eventually leads to the local soil body and glides due to shear surface shearing strength is lower than shear stress along slip band.Rain
Water penetration enters the soil body and is cutting mouth perforation exudation after lower formation shear surface along slope, and then slopes is caused to glide.But slip mass
Downside does not have free face, and slip mass is needed in the slip mass lower end outlet port You Jian.
Therefore slip mass slope Gao Tai little, rainwater cuts mouth there are no arrival and enters below ground, can not cut, thus nothing
Method forms landslide.Therefore the gradient, upside gentle slope can play a role in landslide, but the influence of the gradient is the largest.Simultaneously enough
Length of grade be necessary condition, it is necessary to meet.The gradient, upper slow orographic condition are fully incorporated in together, and consider length of grade item by formula 1
Part synthetically considers the effect of orographic factor, embodies each impact factor correlation and importance.
Beneficial effects of the present invention are mainly manifested in following aspect：
One, of the invention, " a, field investigation mapping In The Granite Area manually cut the slip mass length of grade L on slope, slip mass gradient α,
Come down bulk area A, slip mass upside area AuWith slip mass upper side gradient β；B, In The Granite Area is calculated according to formula 1 manually to cut
The terrain generalization Assessing parameters T on slope；C, hill wash slope is cut manually to granite with slip mass length of grade L and terrain generalization Assessing parameters T
Risk is differentiated；Slip mass length of grade L very little, is difficult to come down；In the smallest slip mass length of grade L or more, terrain generalization
Assessing parameters T is bigger, and risk is bigger, and terrain generalization Assessing parameters T is smaller, and risk is smaller ", by studying orographic factor pair
The occurrence degree that comes down carries out internal mechanism research, establishes the risk computation model that granite manually cuts the slope and land slide on slope,
With strong points, the influence of topography factor of the slope and land slide by considering manually to cut slope comprehensively accurately divides cunning in quantitative mode
Division precision has been effectively ensured in slope fatalness region.
Two, of the invention, influence of the landform to the slope and land slide for manually cutting slope is considered comprehensively, is especially the introduction of slip mass
The influence of length of grade L sets most clivia high level, improves the accuracy for manually cutting the risk judgement of the slope and land slide on slope.
Three, of the invention, 1 mesorelief comprehensive distinguishing factor T of formula, slip mass slope factor S, upper slow terrain factor U are nothing
Dimensional parameters can use under the conditions of manually cutting the slope and land slide on slope, have stronger applicability.
Four, of the invention, it is contemplated that the infiltration feature of the particularity of In The Granite Area and its soil gives specific
The risk judgement of the slope and land slide for manually cutting slope of In The Granite Area, more targetedly, more accurately.
Detailed description of the invention
The present invention is described in further detail below in conjunction with specification drawings and specific embodiments：
Fig. 1 is orographic factor front schematic view；
Fig. 2 is orographic factor side schematic view；
Wherein：Au, area on the upside of slip mass, A, landslide bulk area, L, slip mass length of grade, α, the slip mass gradient, β, landslide
The body upper side gradient.
Specific embodiment
The Landslide hazard judgment method on slope is cut in a kind of In The Granite Area, includes the following steps：
A, the slip mass length of grade L on slope, slip mass gradient α, landslide bulk area are manually cut in field investigation mapping In The Granite Area
A, area A on the upside of slip massuWith slip mass upper side gradient β；
B, the terrain generalization Assessing parameters T that slope is manually cut in In The Granite Area is calculated according to formula 1；
T=S+1.9U formula 1
In formula, T is terrain generalization Assessing parameters；S is slip mass slope factor, is calculated and is determined according to formula 2；U be it is upper slowly
The shape factor is calculated according to formula 3 and is determined；
S=tan α formula 2
U=tan (alpha-beta) Au/ A formula 3
In formula, α is the slip mass gradient, unit °；AuFor area on the upside of slip mass, unit m2；A is landslide bulk area, unit
m2；β is the slip mass upper side gradient, unit °, β < α；
As β >=α, if tan (alpha-beta) Au/ A=0；
C, slope Landslide hazard is manually cut to granite with slip mass length of grade L and terrain generalization Assessing parameters T to differentiate；
Slip mass length of grade L very little, is difficult to come down；In the smallest slip mass length of grade L or more, terrain generalization Assessing parameters T is bigger, danger
Dangerous bigger, terrain generalization Assessing parameters T is smaller, and risk is smaller.
Slope Landslide hazard is manually cut to granite by Hazard rank to differentiate；
As slip mass length of grade L < 3m, granite manually cuts slope Landslide hazard very little；
As slip mass length of grade L >=3m and T < 2.85, then granite manually cuts slope Landslide hazard very little；
As slip mass length of grade L >=3m and 2.85≤T < 3.30, then it is small manually to cut slope Landslide hazard for granite；
As slip mass length of grade L >=3m and 3.30≤T < 3.65, then it is medium manually to cut slope Landslide hazard for granite；
As slip mass length of grade L >=3m and T >=3.65, then it is big manually to cut slope Landslide hazard for granite.
" a, field investigation mapping In The Granite Area manually cut the slip mass length of grade L on slope, slip mass gradient α, landslide bulk area
A, area A on the upside of slip massuWith slip mass upper side gradient β；B, the landform for manually cutting slope according to the calculating of formula 1 In The Granite Area is comprehensive
Close Assessing parameters T；C, slope Landslide hazard is manually cut to granite with slip mass length of grade L and terrain generalization Assessing parameters T to carry out
Differentiate；Slip mass length of grade L very little, is difficult to come down；In the smallest slip mass length of grade L or more, terrain generalization Assessing parameters T is got over
Greatly, risk is bigger, and terrain generalization Assessing parameters T is smaller, and risk is smaller ", journey is occurred to landslide by research orographic factor
Degree carries out internal mechanism research, establishes the risk computation model that granite manually cuts the slope and land slide on slope, with strong points, leads to
The influence of topography factor for considering manually to cut the slope and land slide on slope comprehensively is crossed, Landslide hazard area is divided accurately in quantitative mode
Division precision has been effectively ensured in domain.
Influence of the landform to the slope and land slide for manually cutting slope is considered comprehensively, is especially the introduction of the shadow of slip mass length of grade L
It rings, sets most clivia high level, improve the accuracy for manually cutting the risk judgement of the slope and land slide on slope.
1 mesorelief comprehensive distinguishing factor T of formula, slip mass slope factor S, upper slow terrain factor U are dimensionless group,
It can be used under the conditions of the artificial slope and land slide for cutting slope, there is stronger applicability.
Risk judgment method of the present invention is verified below by specific example：
The side that mass-sending property manually cuts slope had occurred on May 19th, 2015 in Ganzhou City of Jiangxi Province Xingguo County embankment village of East Village township
Hill wash slope, but not everyone work cuts the side slope on slope and is all come down.This area belongs to In The Granite Area.
The slope surface unit for participating in calculating includes choosing the artificial slope of cutting manually cutting slope side slope and not coming down come down
Side slope is at totally 19, wherein come down at 8, does not come down at 11, soil belongs to the stack layer of In The Granite Area.Referring to Fig. 1 and Fig. 2,
Measure each potential slip mass gradient α, measurement landslide bulk area A respectively first, potential slip mass measures bottom, width from above
To charge for remittance width, slip mass length of grade L, slip mass upper side gradient β and slip mass upside area area Au, cunning is calculated by formula 2
Slopes slope factor S, formula 3 calculate slow terrain factor U, finally calculate terrain generalization Assessing parameters T by formula 1.People at 19
Work cuts slope side slope orographic factor, including slip mass length of grade L measured value, terrain generalization Assessing parameters T value, danger classes and landslide
To actually occur situation as shown in table 1.
| Number | α(°) | A(m2) | Au(m2) | (°) | L(m) | S | U | T | Danger classes | Landslide |
| 1 | 61 | 38.4 | 25.6 | 3 | 4.5 | 1.80 | 1.07 | 3.83 | Greatly | It is |
| 2 | 68 | 48 | 27.6 | 50 | 4 | 2.48 | 0.19 | 2.83 | Very little | It is no |
| 3 | 66 | 30 | 21 | 39 | 5 | 2.25 | 0.36 | 2.92 | It is small | It is no |
| 4 | 67 | 15.2 | 9.6 | 16 | 3.8 | 2.36 | 0.78 | 3.84 | Greatly | It is |
| 5 | 51 | 11.4 | 9 | 7 | 3.8 | 1.23 | 0.76 | 2.68 | Very little | It is no |
| 6 | 64 | 18 | 9 | 9 | 5 | 2.05 | 0.71 | 3.41 | In | It is |
| 7 | 63 | 19.5 | 15 | 20 | 3.9 | 1.96 | 0.72 | 3.33 | In | It is no |
| 8 | 65 | 17.02 | 18.4 | 51 | 3.7 | 2.14 | 0.27 | 2.66 | Very little | It is no |
| 9 | 60 | 47.3 | 29.7 | 20 | 4.3 | 1.73 | 0.53 | 2.73 | Very little | It is no |
| 10 | 66 | 36 | 36 | 19 | 5.4 | 2.25 | 1.07 | 4.28 | Greatly | It is |
| 11 | 69 | 90 | 60 | 54 | 9 | 2.61 | 0.18 | 2.94 | It is small | It is no |
| 12 | 69 | 32 | 28 | 21 | 6.5 | 2.61 | 0.97 | 4.45 | Greatly | It is |
| 13 | 68 | 18 | 14.4 | 46 | 5 | 2.48 | 0.32 | 3.09 | It is small | It is no |
| 14 | 64 | 57.6 | 112 | 32 | 3.6 | 2.05 | 1.22 | 4.36 | Greatly | It is |
| 15 | 62 | 64 | 88 | 19 | 4 | 1.88 | 1.28 | 4.32 | Greatly | It is |
| 16 | 54 | 24 | 16 | 38 | 6 | 1.38 | 0.19 | 1.74 | Very little | It is no |
| 17 | 62 | 143 | 208 | 15 | 6.5 | 1.88 | 1.56 | 4.84 | Greatly | It is |
| 18 | 62 | 21.5 | 7 | 31 | 4.3 | 1.88 | 0.2 | 2.25 | Very little | It is no |
| 19 | 58 | 225 | 300 | 44 | 15 | 1.60 | 0.33 | 2.23 | Very little | It is no |
Table 1
Seen from table 1：Be judged as risk it is big manually cutting slope side slope has 7, all come down；It is judged as risk
In manually cut slope side slope and have 2,1 is come down, and there is no landslides for another；It is judged as small artificial of risk
Cutting slope side slope has 3, and all there is no landslides；It is judged as manually cutting slope side slope and there are 7 for risk very little, all there is no cunnings
Slope.Illustrate that the Landslide hazard judgement of the invention that slope is manually cut to In The Granite Area is very accurate.
Claims (2)
1. the Landslide hazard judgment method that slope is cut in a kind of In The Granite Area, which is characterized in that include the following steps：
A, the slip mass length of grade L on slope, slip mass gradient α, landslide bulk area A, cunning are manually cut in field investigation mapping In The Granite Area
Area A on the upside of slopesuWith slip mass upper side gradient β；
B, the terrain generalization Assessing parameters T that slope is manually cut in In The Granite Area is calculated according to formula 1；
T=S+1.9U formula 1
In formula, T is terrain generalization Assessing parameters；S is slip mass slope factor, is calculated and is determined according to formula 2；U be upper slow landform because
Son is calculated according to formula 3 and is determined；
S=tan α formula 2
U=tan (alpha-beta) Au/ A formula 3
In formula, α is the slip mass gradient, unit °；AuFor area on the upside of slip mass, unit m2；A is landslide bulk area, unit m2；β
For the slip mass upper side gradient, unit °, β < α；
As β >=α, if tan (alpha-beta) Au/ A=0；
C, slope Landslide hazard is manually cut to granite with slip mass length of grade L and terrain generalization Assessing parameters T to differentiate；Landslide
Body length of grade L very little, is difficult to come down；In the smallest slip mass length of grade L or more, terrain generalization Assessing parameters T is bigger, risk
Bigger, terrain generalization Assessing parameters T is smaller, and risk is smaller；
Slope Landslide hazard is manually cut to granite by Hazard rank to differentiate；
As slip mass length of grade L < 3m, granite manually cuts slope Landslide hazard very little；
As slip mass length of grade L >=3m and T < 2.85, then granite manually cuts slope Landslide hazard very little；
As slip mass length of grade L >=3m and 2.85≤T < 3.30, then it is small manually to cut slope Landslide hazard for granite；
As slip mass length of grade L >=3m and 3.30≤T < 3.65, then it is medium manually to cut slope Landslide hazard for granite；
As slip mass length of grade L >=3m and T >=3.65, then it is big manually to cut slope Landslide hazard for granite.
2. the application of the Landslide hazard judgment method on slope, feature are cut in a kind of In The Granite Area according to claim 1
It is：The judgement of slope Landslide hazard is manually cut suitable for the In The Granite Area for being 53 ° -55 ° slip mass gradient α.
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| Application Number | Priority Date | Filing Date | Title |
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| CN105512443A (en) * | 2016-01-28 | 2016-04-20 | 成都理工大学 | Method for judging dangerousness of shallow soil landslide |
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| CN105512443A (en) * | 2016-01-28 | 2016-04-20 | 成都理工大学 | Method for judging dangerousness of shallow soil landslide |
| CN105761436A (en) * | 2016-03-10 | 2016-07-13 | 成都理工大学 | Red bed region landslide early warning method and application thereof |
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