CN109357657B - Method for predicting maximum depth of beach animal hole - Google Patents
Method for predicting maximum depth of beach animal hole Download PDFInfo
- Publication number
- CN109357657B CN109357657B CN201811352463.9A CN201811352463A CN109357657B CN 109357657 B CN109357657 B CN 109357657B CN 201811352463 A CN201811352463 A CN 201811352463A CN 109357657 B CN109357657 B CN 109357657B
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- CN
- China
- Prior art keywords
- beach
- determining
- soil body
- hole
- maximum depth
- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 241001465754 Metazoa Species 0.000 title claims abstract description 30
- 239000002689 soil Substances 0.000 claims abstract description 67
- 239000002245 particle Substances 0.000 claims abstract description 21
- 230000005484 gravity Effects 0.000 claims abstract description 13
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 10
- 230000028327 secretion Effects 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 241000238557 Decapoda Species 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 235000015170 shellfish Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000008855 peristalsis Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/18—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring depth
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention provides a method for predicting the maximum depth of a beach animal hole, which comprises the following steps: (1) determining the median particle size d of the beach soil mass50(ii) a (2) Determining the gravity gamma of the beach soil body; (3) determining the cohesive force c of the beach soil body; (4) determining saturated internal friction angle of beach soil
Determining the reinforcing effect coefficient α of the secretion of the beaches on the soil body of the hole wall, (6) determining the diameter R of the hole dug by the beaches, (7) determining the maximum depth of the hole dug by the animal according to the following formula,
Description
Technical Field
The invention relates to the field of marine organisms, in particular to a method for predicting the maximum depth of a beach animal cave excavation.
Background
The biological activities on the beach are frequent, and many living cave animals including crabs and various shellfish live on the beach. These animals typically dig holes in the beach or form holes by body peristalsis, where they live and breed and emerge to feed when the tide has subsided. Due to the limited strength of the beach soil body, the depth of the hole dug by the beach soil body is limited, when the depth exceeds the limit value, collapse occurs, and animals are buried in the beach soil body or can not enter the hole again. The maximum depth of the holes is clear, and the method has important significance for knowing the activity space of animals, the working range of artificial beach culture and the like. The invention provides a method for predicting the maximum depth of a beach animal cave excavation, which has the advantages of simple structure, convenience in implementation and reliable result.
Disclosure of Invention
The invention aims to provide a method for predicting the maximum depth of a beach animal hole, which has the advantages of simple structure, convenient implementation and reliable result.
In order to achieve the above object, the present invention provides a method for predicting the maximum depth of a beach animal hole, comprising the following steps:
(1) determining the median particle size d of the beach soil mass50；
(2) Determining the gravity gamma of the beach soil body;
(3) determining the cohesive force c of the beach soil body;
(4) determining saturated internal friction angle of beach soil
(5) Determining α the reinforcement effect coefficient of the secretion of the beach animals on the soil body of the hole wall;
(6) determining the diameter R of a hole dug by the beach animals;
(7) determining the maximum depth of the animal hole according to the following formula,
wherein β is the hole size influence factor.
In a preferred embodiment: step 1, determining the median particle diameter d of the beach soil body50The method specifically comprises the following steps: taking the beach soil body, adopting a screening method or a pycnometer method to test the particle size grading condition of the beach soil body, drawing a particle accumulation grading curve, and then calculating the median particle size d of the soil body50。
In a preferred embodiment: the step 2 of determining the gravity gamma of the beach soil body specifically comprises the following steps: taking an original soil sample from the beach soil body, carrying out a density test to test the gravity gamma of the beach soil body, or directly testing the gravity gamma of the beach soil body by adopting a cutting ring on site.
In a preferred embodiment: the step 3 of determining the cohesive force c of the beach soil body specifically comprises the following steps: and taking an original soil sample from the beach soil body, performing a direct shear test, and testing the cohesive force c of the beach soil body.
In a preferred embodiment: step 4, determining the saturated internal friction angle of the beach soil body
The method specifically comprises the following steps:median particle diameter d according to test50And determining the saturated internal friction angle by
In a preferred embodiment, the crab aperture reinforcement factor α is 1.02, the clam aperture reinforcement factor α is 1.10, and the razor clam aperture reinforcement factor α is 1.15.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the invention provides a method for predicting the maximum depth of a beach animal hole, which has the advantages of simple structure, convenience in implementation and reliable result.
Detailed Description
A beach animal hole maximum depth prediction method comprises the following steps:
(1) determining the median particle size d of the beach soil mass50；
(2) Determining the gravity gamma of the beach soil body;
(3) determining the cohesive force c of the beach soil body;
(4) determining saturated internal friction angle of beach soil
(5) Determining α the reinforcement effect coefficient of the secretion of the beach animals on the soil body of the hole wall;
(6) determining the diameter R of a hole dug by the beach animals;
(7) determining the maximum depth of the animal hole according to the following formula,
wherein β is the hole size influence factor.
Wherein the beach soil is determined in step 1Median particle diameter d50The method specifically comprises the following steps: taking the beach soil body, adopting a screening method or a pycnometer method to test the particle size grading condition of the beach soil body, drawing a particle accumulation grading curve, and then calculating the median particle size d of the soil body50。
The step 2 of determining the gravity gamma of the beach soil body specifically comprises the following steps: taking an original soil sample from the beach soil body, carrying out a density test to test the gravity gamma of the beach soil body, or directly testing the gravity gamma of the beach soil body by adopting a cutting ring on site.
The step 3 of determining the cohesive force c of the beach soil body specifically comprises the following steps: and taking an original soil sample from the beach soil body, performing a direct shear test, and testing the cohesive force c of the beach soil body.
Step 4, determining the saturated internal friction angle of the beach soil body
The method specifically comprises the following steps: median particle diameter d according to test50And determining the saturated internal friction angle by
In step 5, the strengthening effect coefficients are different for different animals, for example, the strengthening effect coefficient α of crab pores is 1.02, the strengthening effect coefficient α of clam pores is 1.10, and the strengthening effect coefficient α of razor clam pores is 1.15.
A certain beach is positioned in the coastal area of southeast of China, the soil body is mainly fine sand, the slope of the beach is small, the average slope is 3.4 degrees, the maximum tidal range is 4.7m, the tidal flat area is large, and a plurality of cave animals including crabs and a plurality of shellfish live in the beach. The method of the invention is adopted to predict the maximum depth of the crab hole, 1.0kg of soil body of the crab life is adopted on site and transported back to a laboratory for particle test, and the median particle diameter d is measured500.13; the severe gamma of the steel is 18kN/m by adopting a ring cutter method on site3(ii) a The cohesive force c is 1.2kPa by adopting a direct shear test; the saturated internal friction angle of the soil body is 4.5 DEG through calculationAnd the diameter R of the hole is 0.01m, and the maximum depth of the hole of the beach crab is 0.73m through further calculation.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and variations or technical scopes disclosed by the present invention can be easily conceived by those skilled in the art. Alternatives are intended to be included within the scope of the invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.
Claims (5)
1. A beach animal hole maximum depth prediction method is characterized by comprising the following steps:
(1) determining the median particle size d of the beach soil mass50；
(2) Determining the gravity gamma of the beach soil body;
(3) determining the cohesive force c of the beach soil body;
(4) determining saturated internal friction angle of beach soil
Median particle diameter d according to test50And determining the saturated internal friction angle by
(5) Determining α the reinforcement effect coefficient of the secretion of the beach animals on the soil body of the hole wall;
(6) determining the diameter R of a hole dug by the beach animals;
(7) determining the maximum depth of the animal hole according to the following formula,
wherein β is the hole size influence factor.
2. The method of claim 1, wherein the method for predicting the maximum depth of the beach animal hole comprises: step 1, determining the median particle diameter d of the beach soil body50The method specifically comprises the following steps: taking the beach soil body, adopting a screening method or a pycnometer method to test the particle size grading condition of the beach soil body, drawing a particle accumulation grading curve, and then calculating the median particle size d of the soil body50。
3. The method of claim 1, wherein the method for predicting the maximum depth of the beach animal hole comprises: the step 2 of determining the gravity gamma of the beach soil body specifically comprises the following steps: taking an original soil sample from the beach soil body, carrying out a density test to test the gravity gamma of the beach soil body, or directly testing the gravity gamma of the beach soil body by adopting a cutting ring on site.
4. The method of claim 1, wherein the method for predicting the maximum depth of the beach animal hole comprises: the step 3 of determining the cohesive force c of the beach soil body specifically comprises the following steps: and taking an original soil sample from the beach soil body, performing a direct shear test, and testing the cohesive force c of the beach soil body.
5. The method of claim 1, wherein the crab aperture reinforcement effect coefficient is α× 1.02.02, the clam aperture reinforcement effect coefficient is α× 1.10.10, and the razor clam aperture reinforcement effect coefficient is α× 1.15.15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352463.9A CN109357657B (en) | 2018-11-14 | 2018-11-14 | Method for predicting maximum depth of beach animal hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352463.9A CN109357657B (en) | 2018-11-14 | 2018-11-14 | Method for predicting maximum depth of beach animal hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109357657A CN109357657A (en) | 2019-02-19 |
| CN109357657B true CN109357657B (en) | 2020-08-07 |
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| CN201811352463.9A Expired - Fee Related CN109357657B (en) | 2018-11-14 | 2018-11-14 | Method for predicting maximum depth of beach animal hole |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10361301B4 (en) * | 2003-12-24 | 2014-09-18 | Volkswagen Ag | Method for the subsequent measurement of a recess introduced into a component, in particular a laser bore, and apparatus for carrying out a method for the subsequent measurement of a recess introduced into a component |
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| CN106950121A (en) * | 2017-03-31 | 2017-07-14 | 长沙理工大学 | It is a kind of that the method that side slope superficial distinguishes deepness is determined with triaxial compression test |
| CN107506566A (en) * | 2017-10-16 | 2017-12-22 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of new dynamics of debris flow Numerical Analysis methods and system |
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| CN108629126A (en) * | 2018-05-09 | 2018-10-09 | 中国地质大学（北京） | It is a kind of to consider the macro thin rock mass mechanics numerical modeling method for seeing defect coupled |
-
2018
- 2018-11-14 CN CN201811352463.9A patent/CN109357657B/en not_active Expired - Fee Related
Patent Citations (7)
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|---|---|---|---|---|
| DE10361301B4 (en) * | 2003-12-24 | 2014-09-18 | Volkswagen Ag | Method for the subsequent measurement of a recess introduced into a component, in particular a laser bore, and apparatus for carrying out a method for the subsequent measurement of a recess introduced into a component |
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| CN105432528A (en) * | 2015-12-21 | 2016-03-30 | 同济大学 | Field environment test system and method for small aquatic animals |
| CN106950121A (en) * | 2017-03-31 | 2017-07-14 | 长沙理工大学 | It is a kind of that the method that side slope superficial distinguishes deepness is determined with triaxial compression test |
| CN107506566A (en) * | 2017-10-16 | 2017-12-22 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of new dynamics of debris flow Numerical Analysis methods and system |
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Non-Patent Citations (1)
| Title |
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| 缺资料地区泥石流预警雨量阈值研究;潘华利等;《岩土力学》;20120731;第33卷(第7期);第2122-2126页 * |
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| CN109357657A (en) | 2019-02-19 |
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