CN113605349A - Novel high polymer nano ecological sand fixation material and reinforcement method thereof - Google Patents

Novel high polymer nano ecological sand fixation material and reinforcement method thereof Download PDF

Info

Publication number
CN113605349A
CN113605349A CN202111074019.7A CN202111074019A CN113605349A CN 113605349 A CN113605349 A CN 113605349A CN 202111074019 A CN202111074019 A CN 202111074019A CN 113605349 A CN113605349 A CN 113605349A
Authority
CN
China
Prior art keywords
slope
sand
water
formula
flow
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.)
Pending
Application number
CN202111074019.7A
Other languages
Chinese (zh)
Inventor
袁进科
裴钻
杨森林
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.)
Chengdu Univeristy of Technology
Original Assignee
Chengdu Univeristy of Technology
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 Chengdu Univeristy of Technology filed Critical Chengdu Univeristy of Technology
Priority to CN202111074019.7A priority Critical patent/CN113605349A/en
Publication of CN113605349A publication Critical patent/CN113605349A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10Complex mathematical operations
    • G06F17/11Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/152Water filtration

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mathematical Physics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Paleontology (AREA)
  • Computational Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Operations Research (AREA)
  • Software Systems (AREA)
  • Databases & Information Systems (AREA)
  • Algebra (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Revetment (AREA)

Abstract

The invention discloses a novel high polymer nano ecological sand fixation material and a reinforcing method thereof, belonging to the technical field of geological protection materials, and comprising an aqueous solution and a solid material, wherein the solid material is a sand material and a high polymer nano material, the aqueous solution is tap water, the liquid-solid ratio of the aqueous solution to the solid material is 1:2, the aqueous solution and the solid material form a net film through matrix cementation, the net film is laid on the slope surface of a sand slope, the thickness of the net film is 2cm, and the surface of the sand slope is wrapped and naturally air-dried to form a solidified body. According to the novel high polymer nano ecological sand fixation material and the reinforcement method thereof, the ratio of the quality of the aqueous solution to the quality of the solid material is prepared according to the theoretical scouring amount and the experimental scouring amount of a sand slope, the comparison is carried out according to the theoretical scouring amount and the experimental scouring amount, and the liquid-solid ratio is selected reasonably, so that the protection effect of the sand fixation material is reflected to the maximum extent.

Description

Novel high polymer nano ecological sand fixation material and reinforcement method thereof
Technical Field
The invention belongs to the technical field of geological protection materials, and particularly relates to a novel high polymer nano ecological sand fixation material and a reinforcement method thereof.
Background
Scouring of desert slopes is an extremely complex physical, chemical and biological process. The method is influenced by a plurality of external natural factors, such as sand, terrain, climate, vegetation and the like, and is also interfered by human behaviors, and the factors have complicated interaction. The influence result comprises runoff quantity, splash erosion capacity of rainfall on a sand table and the like, and the parameters depend on rainfall characteristics, geological characteristics, landform, vegetation development and the like.
In the prior art, the sand fixing material is not selected in a mode of being suitable according to local conditions, and early calculation and test cannot be performed according to the local slope environment, so that the sand fixing material cannot achieve the expected ideal effect easily. In order to solve the problems, a novel high polymer nano ecological sand fixing material and a reinforcing method thereof are provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a novel high polymer nano ecological sand fixation material and a reinforcing method thereof, aiming at solving the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a novel high polymer nanometer ecological sand fixation material comprises an aqueous solution and a solid material, wherein the solid material is a sandy material and a high polymer nanometer material, the aqueous solution is tap water, the sandy material, the high polymer nanometer material and the tap water are subjected to ratio blending of the mass of the aqueous solution and the mass of the solid material according to the theoretical scouring amount and the experimental scouring amount of a sandy slope, the liquid-solid ratio of the aqueous solution and the solid material is 1:2, the aqueous solution and the solid material form a net film through matrix cementation, the net film is laid on the slope surface of the sandy slope, the thickness of the net film is 2cm, and the surface of the sandy slope is wrapped and naturally air-dried to form a solidified body.
Further optimizing the technical scheme, the theoretical scouring amount of the sandy slope is calculated according to the following mode:
the single-width-diameter flow of the slope surface water and sand flow unit body (the cross-sectional area is 1cm multiplied by 1cm) with the length delta x is changed into
Figure BDA0003261427330000021
And under the influence of rainfall and infiltration factors, the single-width-diameter flow of the slope water and sand flow unit body with the length delta x is (Q-I) cos theta delta x, and the single-width-diameter flow at the slope length S is as follows:
Figure BDA0003261427330000022
in the formula: q is the single width flow (m) of the unit body of the water and sand flow2S); q is single wide rainfall intensity (m/s); i is single-width infiltration coefficient (m/s); s is the slope length (m); θ is slope (°);
the flow velocity v of the water and sand flow at the slope length S can be obtained by the Manning formula as follows:
Figure BDA0003261427330000023
in the formula: v is the flow velocity (m/s) of the water sand flow; h is the average depth (m) of water infiltration; θ is slope (°); n is the equivalent roughness coefficient of the slope;
combining formula (1) and formula (2) to give formula (3):
Figure BDA0003261427330000024
according to the law of conservation of energy, the scouring action of the water and sand flow can be analyzed through energy conversion, and by analyzing the material change and the energy conversion of the water and sand flow in the process of flowing on the slope, a water and sand body scouring energy balance equation is established as follows:
Figure BDA0003261427330000025
in the formula: ehIs the initial potential energy (J) of the water-sand flow unit at the top of the slope; e1 vThe kinetic energy (J) of the water-sand flow unit at the top of the slope; efFriction energy consumption (J) when the water and sand flow unit flows through the slope; e2 vFor water-sand flow units at the toe of a slopeKinetic energy (J);
because the slope surface catchment condition does not exist on the natural desert slope, namely the initial speed of the water-sand flow unit body at the top of the slope is 0, according to the formula (4), namely E1 vIs zero; initial potential energy E at the top of the slopehSee formula (5):
Eh=mgH=mgS sinθ (5)
in the formula: m is the initial mass (kg) of the water-sand flow unit; h is the initial slope height (m) of the water-sand flow unit;
the friction energy consumption of the water and sand flow unit when flowing through the slope is related to the mass change of the unit body; from the formula (1), the slope flow change is linearly related to the slope length, and the sand content is much smaller than the water flow, so that the water-sand flow change is approximately considered to be linearly related to the slope length, and the water-sand flow quality at any distance x of the slope is
Figure BDA0003261427330000031
The frictional energy consumption being related to the frictional force, i.e. friction
Figure BDA0003261427330000032
The friction energy is calculated as:
Figure BDA0003261427330000033
in the formula: Δ m is the water sand flow change (kg);
the united vertical type (4), (5) and the formula (6) obtain a water sand body scouring energy balance equation:
mgSsinθ=ngS(m+0.5Δm)cosθ+0.5(m+Δm)v2 (7)
in the formula: v is the velocity (m/s) of the water sand flow at the toe of the slope;
obtaining a water and sand rheological variable calculation formula through the formula (7):
Figure BDA0003261427330000034
since the water-sand flow change amount Δ m is the sum of the water change amount Δ Q and the sand change amount Δ m', the water-sand flow change amount Δ m is smaller than the sand flow change amount Δ Q
Δmˊ=Δm-ΔQ (9)
In the formula: Δ Q is the amount of change in water (kg); Δ m' is the amount of change in sand (kg);
the variation Δ Q of the water in equation (9) is related to the water flow Q and the time t, where t is:
Figure BDA0003261427330000035
in the formula: t is the slope catchment time(s);
combining formulae (1), (3), (9), and (10) to give the following formula:
Figure BDA0003261427330000041
Δ m' in formula (11) is the amount of change in sand, the total amount of sand washed is to be considered in conjunction with the total flow of water; catchment on the slope approximately equals the total flow at the toe, i.e.
M=ρVB (12)
In the formula: ρ is the density of water (kg/m)3) (ii) a V is the volume of water (m)3) (ii) a The flow and time conversion can be carried out; b is the slope width (m);
according to equations (11) and (12), the total sand-wash quantity can be obtained, namely:
Figure BDA0003261427330000042
in the formula: m' is the total flush (g); and m is the initial unit mass of the water sand flow and is 0.1 kg.
The technical scheme is further optimized, and by influencing the slope scouring, parameters of rainfall intensity, rainfall duration, gradient, equivalent rough coefficient and permeability coefficient are reasonably selected and are carried into the formula (13), so that theoretical calculation results of scouring amounts under different conditions are obtained.
Further optimizing the technical scheme, the test scouring amount of the sandy slope is calculated according to the following mode:
selecting four factors of rain intensity, gradient, duration and different liquid-solid ratios to carry out indoor scouring simulation tests, wherein the test rainfall intensity is 150mm/h, 200mm/h and 250mm/h, and the rainfall converted by a rain intensity formula is respectively 3.5L/min, 4.6L/min and 5.8L/min; the rainfall lasts for 10min, 20min and 30 min; the gradient is 30 degrees, 40 degrees and 50 degrees; the liquid-solid ratio is 0:0, 1:2 and 1: 3; nine groups of tests are respectively designed through an orthogonal method, and the influence of different influence factors on the simulated slope surface scouring is known through the scouring magnitude value and the infiltration rate change of the nine groups of tests.
A strengthening method of a novel high polymer nanometer ecological sand fixation material is based on the strengthening of the novel high polymer nanometer ecological sand fixation material, and comprises the following concrete strengthening steps:
s1, mixing the aqueous solution and the solid material according to the liquid-solid ratio of 1:2 to prepare the membrane, wherein the aqueous solution and the solid material form a membrane through matrix cementation;
s2, paving the surface of the sandy slope by adopting a C25 concrete rib framework;
s3, installing an anchor rod and hanging a net, and paving the net film in the S1;
and S4, performing regular maintenance at the later stage.
Further optimizing the technical scheme, in the step S3, the thickness of the net film is laid to be 2cm, the surface of the sandy slope is wrapped, and the sandy slope is naturally air-dried to form a solidified body.
Compared with the prior art, the invention provides a novel high polymer nano ecological sand fixation material and a reinforcing method thereof, and the novel high polymer nano ecological sand fixation material has the following beneficial effects:
according to the novel high polymer nano ecological sand fixation material and the reinforcement method thereof, the ratio of the quality of the aqueous solution to the quality of the solid material is prepared according to the theoretical scouring amount and the experimental scouring amount of a sand slope, the comparison is carried out according to the theoretical scouring amount and the experimental scouring amount, and the liquid-solid ratio is selected reasonably, so that the protection effect of the sand fixation material is reflected to the maximum extent.
Drawings
FIG. 1 is a schematic flow chart of a novel reinforcement method of a high polymer nano ecological sand-fixing material provided by the invention;
FIG. 2 is a schematic diagram of a test model of a novel high polymer nano ecological sand-fixing material provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a novel high polymer nanometer ecological sand fixation material comprises an aqueous solution and a solid material, wherein the solid material is a sandy material and a high polymer nanometer material, the aqueous solution is tap water, the sandy material, the high polymer nanometer material and the tap water are subjected to ratio blending of the mass of the aqueous solution and the mass of the solid material according to the theoretical scouring amount and the experimental scouring amount of a sandy slope, the liquid-solid ratio of the aqueous solution and the solid material is 1:2, the aqueous solution and the solid material form a net film through matrix cementation, the net film is laid on the slope surface of the sandy slope, the thickness of the net film is 2cm, and the surface of the sandy slope is wrapped and naturally air-dried to form a solidified body.
Specifically, the theoretical scouring amount of the sandy slope is calculated according to the following mode:
the single-width-diameter flow of the slope surface water and sand flow unit body (the cross-sectional area is 1cm multiplied by 1cm) with the length delta x is changed into
Figure BDA0003261427330000061
And under the influence of rainfall and infiltration factors, the single-width-diameter flow of the slope water and sand flow unit body with the length delta x is (Q-I) cos theta delta x, and the single-width-diameter flow at the slope length S is as follows:
Figure BDA0003261427330000062
in the formula: q is the single width flow (m) of the unit body of the water and sand flow2S); q is single wide rainfall intensity (m/s); i is single-width infiltration coefficient (m/s); s is the slope length (m); θ is slope (°);
the flow velocity v of the water and sand flow at the slope length S can be obtained by the Manning formula as follows:
Figure BDA0003261427330000063
in the formula: v is the flow velocity (m/s) of the water sand flow; h is the average depth (m) of water infiltration; θ is slope (°); n is the equivalent roughness coefficient of the slope;
combining formula (1) and formula (2) to give formula (3):
Figure BDA0003261427330000064
according to the law of conservation of energy, the scouring action of the water and sand flow can be analyzed through energy conversion, and by analyzing the material change and the energy conversion of the water and sand flow in the process of flowing on the slope, a water and sand body scouring energy balance equation is established as follows:
Figure BDA0003261427330000065
in the formula: ehIs the initial potential energy (J) of the water-sand flow unit at the top of the slope; e1 vThe kinetic energy (J) of the water-sand flow unit at the top of the slope; efFriction energy consumption (J) when the water and sand flow unit flows through the slope; e2 vThe kinetic energy (J) of the water-sand flow unit at the toe of the slope;
because the slope surface catchment condition does not exist on the natural desert slope, namely the initial speed of the water-sand flow unit body at the top of the slope is 0, according to the formula (4), namely E1 vIs zero; initial potential energy E at the top of the slopehSee formula (5):
Eh=mgH=mgS sinθ (5)
in the formula: m is the initial mass (kg) of the water-sand flow unit; h is the initial slope height (m) of the water-sand flow unit;
the friction energy consumption of the water and sand flow unit when flowing through the slope is related to the mass change of the unit body; from the formula (1), the slope flow change is linearly related to the slope length, and the sand content is much smaller than the water flow, so that the water-sand flow change is approximately considered to be linearly related to the slope length, and the water-sand flow quality at any distance x of the slope is
Figure BDA0003261427330000071
The frictional energy consumption being related to the frictional force, i.e. friction
Figure BDA0003261427330000072
The friction energy is calculated as:
Figure BDA0003261427330000073
in the formula: Δ m is the water sand flow change (kg);
the united vertical type (4), (5) and the formula (6) obtain a water sand body scouring energy balance equation:
mgSsinθ=ngS(m+0.5Δm)cosθ+0.5(m+Δm)v2 (7)
in the formula: v is the velocity (m/s) of the water sand flow at the toe of the slope;
obtaining a water and sand rheological variable calculation formula through the formula (7):
Figure BDA0003261427330000074
since the water-sand flow change amount Δ m is the sum of the water change amount Δ Q and the sand change amount Δ m', the water-sand flow change amount Δ m is smaller than the sand flow change amount Δ Q
Δmˊ=Δm-ΔQ (9)
In the formula: Δ Q is the amount of change in water (kg); Δ m' is the amount of change in sand (kg);
the variation Δ Q of the water in equation (9) is related to the water flow Q and the time t, where t is:
Figure BDA0003261427330000081
in the formula: t is the slope catchment time(s);
combining formulae (1), (3), (9), and (10) to give the following formula:
Figure BDA0003261427330000082
Δ m' in formula (11) is the amount of change in sand, the total amount of sand washed is to be considered in conjunction with the total flow of water; catchment on the slope approximately equals the total flow at the toe, i.e.
M=ρVB (12)
In the formula: ρ is the density of water (kg/m)3) (ii) a V is the volume of water (m)3) (ii) a The flow and time conversion can be carried out; b is the slope width (m);
according to equations (11) and (12), the total sand-wash quantity can be obtained, namely:
Figure BDA0003261427330000083
in the formula: m' is the total flush (g); and m is the initial unit mass of the water sand flow and is 0.1 kg.
Specifically, parameters of rainfall intensity, rainfall duration, gradient, equivalent roughness coefficient and permeability coefficient are reasonably selected by influencing the slope scouring, and are brought into the formula (13), so that theoretical calculation results of scouring amounts under different conditions are obtained.
Specifically, the test scouring amount of the sandy slope is calculated according to the following mode:
as shown in fig. 2, in the test model, four factors of rain intensity, gradient, duration and different liquid-solid ratios are selected to carry out an indoor scouring simulation test, the test rainfall intensity is 150mm/h, 200mm/h and 250mm/h, and the rainfall is converted by a rain intensity formula to be 3.5L/min, 4.6L/min and 5.8L/min respectively; the rainfall lasts for 10min, 20min and 30 min; the gradient is 30 degrees, 40 degrees and 50 degrees; the liquid-solid ratio is 0:0, 1:2 and 1: 3; nine groups of tests are respectively designed through an orthogonal method, and the influence of different influence factors on the simulated slope surface scouring is known through the scouring magnitude value and the infiltration rate change of the nine groups of tests. The results of the nine sets of simulations are shown in table 1.
TABLE 1 rainfall erosion simulation test theoretical calculation and test comparison
Figure BDA0003261427330000091
Figure BDA0003261427330000101
It can be seen from table 1 that the analysis test value is closer to the calculated value, but the equivalent roughness coefficient changes with the change of the rainfall erosion test parameter, and through comparison, the slope of the 1:2 liquid-solid ratio reinforcing material generates more runoff, the sand-covered particles are larger, and the corresponding erosion amount is also larger.
Example two:
referring to fig. 1, a method for reinforcing a novel high polymer nano ecological sand-fixing material, based on the embodiment, includes the following specific reinforcing steps:
s1, mixing the aqueous solution and the solid material according to the liquid-solid ratio of 1:2 to prepare the membrane, wherein the aqueous solution and the solid material form a membrane through matrix cementation;
s2, paving the surface of the sandy slope by adopting a C25 concrete rib framework;
s3, installing an anchor rod and hanging a net, and paving the net film in the S1;
and S4, performing regular maintenance at the later stage.
Specifically, in S3, the net film is laid to a thickness of 2cm, and the surface of the sandy slope is wrapped and naturally air-dried to form a solidified body.
The invention has the beneficial effects that: according to the novel high polymer nano ecological sand fixation material and the reinforcement method thereof, the ratio of the quality of the aqueous solution to the quality of the solid material is prepared according to the theoretical scouring amount and the experimental scouring amount of a sand slope, the comparison is carried out according to the theoretical scouring amount and the experimental scouring amount, and the liquid-solid ratio is selected reasonably, so that the protection effect of the sand fixation material is reflected to the maximum extent.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A novel high polymer nanometer ecological sand fixation material comprises an aqueous solution and a solid material, and is characterized in that the solid material is a sandy material and a high polymer nanometer material, the aqueous solution is tap water, the sandy material, the high polymer nanometer material and the tap water are subjected to ratio blending of the quality of the aqueous solution and the quality of the solid material according to the theoretical scouring amount and the experimental scouring amount of a sandy slope, the liquid-solid ratio of the aqueous solution to the solid material is 1:2, the aqueous solution and the solid material form a net film through matrix cementation, the net film is laid on the slope surface of the sandy slope, the thickness of the net film is 2cm, the surface of the sandy slope is wrapped and naturally air-dried to form a solidified body.
2. The novel high polymer nano ecological sand fixing material as claimed in claim 1, wherein the theoretical scouring amount of the sandy slope is calculated as follows:
the single-width-diameter flow of the slope surface water and sand flow unit body (the cross-sectional area is 1cm multiplied by 1cm) with the length delta x is changed into
Figure FDA0003261427320000011
And under the influence of rainfall and infiltration factors, the single-width-diameter flow of the slope water and sand flow unit body with the length delta x is (Q-I) cos theta delta x, and the single-width-diameter flow at the slope length S is as follows:
Figure FDA0003261427320000012
in the formula: q is the single width flow (m) of the unit body of the water and sand flow2S); q is single wide rainfall intensity (m/s); i is single-width infiltration coefficient (m/s); s is the slope length (m); θ is slope (°);
the flow velocity v of the water and sand flow at the slope length S can be obtained by the Manning formula as follows:
Figure FDA0003261427320000013
in the formula: v is the flow velocity (m/s) of the water sand flow; h is the average depth (m) of water infiltration; θ is slope (°); n is the equivalent roughness coefficient of the slope;
combining formula (1) and formula (2) to give formula (3):
Figure FDA0003261427320000014
according to the law of conservation of energy, the scouring action of the water and sand flow can be analyzed through energy conversion, and by analyzing the material change and the energy conversion of the water and sand flow in the process of flowing on the slope, a water and sand body scouring energy balance equation is established as follows:
Figure FDA0003261427320000021
in the formula: ehIs the initial potential energy (J) of the water-sand flow unit at the top of the slope; e1 vThe kinetic energy (J) of the water-sand flow unit at the top of the slope; efFriction energy consumption (J) when the water and sand flow unit flows through the slope; e2 vThe kinetic energy (J) of the water-sand flow unit at the toe of the slope;
because the slope surface catchment condition does not exist on the natural sand slope, namely the initial speed of the water-sand flow unit body at the top of the slope is 0, according to the formula (4), namely E1 vIs zero; initial potential energy E at the top of the slopehSee formula (5):
Eh=mgH=mgS sinθ (5)
in the formula: m is the initial mass (kg) of the water-sand flow unit; h is the initial slope height (m) of the water-sand flow unit;
the friction energy consumption of the water and sand flow unit when flowing through the slope is related to the mass change of the unit body; from the formula (1), the slope flow change is linearly related to the slope length, and the sand content is much smaller than the water flow, so that the water-sand flow change is approximately considered to be linearly related to the slope length, and the water-sand flow quality at any distance x of the slope is
Figure FDA0003261427320000022
The frictional energy consumption being related to the frictional force, i.e. friction
Figure FDA0003261427320000023
The friction energy is calculated as:
Figure FDA0003261427320000024
in the formula: Δ m is the water sand flow change (kg);
the united vertical type (4), (5) and the formula (6) obtain a water sand body scouring energy balance equation:
mgS sinθ=ngS(m+0.5Δm)cosθ+0.5(m+Δm)v2 (7)
in the formula: v is the velocity (m/s) of the water sand flow at the toe of the slope;
obtaining a water and sand rheological variable calculation formula through the formula (7):
Figure FDA0003261427320000025
since the water-sand flow change amount Δ m is the sum of the water change amount Δ Q and the sand change amount Δ m', the water-sand flow change amount Δ m is smaller than the sand flow change amount Δ Q
Δmˊ=Δm-ΔQ (9)
In the formula: Δ Q is the amount of change in water (kg); Δ m' is the amount of change in sand (kg);
the variation Δ Q of the water in equation (9) is related to the water flow Q and the time t, where t is:
Figure FDA0003261427320000031
in the formula: t is the slope catchment time(s);
combining formulae (1), (3), (9), and (10) to give the following formula:
Figure FDA0003261427320000032
Δ m' in formula (11) is the amount of change in sand, the total amount of sand washed is to be considered in conjunction with the total flow of water; catchment on the slope approximately equals the total flow at the toe, i.e.
M=ρVB (12)
In the formula: ρ is the density of water (kg/m)3) (ii) a V is the volume of water (m)3) (ii) a The flow and time conversion can be carried out; b is the slope width (m);
according to equations (11) and (12), the total sand-wash quantity can be obtained, namely:
Figure FDA0003261427320000033
in the formula: m' is the total flush (g); and m is the initial unit mass of the water sand flow and is 0.1 kg.
3. The novel high polymer nano ecological sand fixing material as claimed in claim 2, wherein the parameters of rainfall intensity, rainfall duration, gradient, equivalent roughness coefficient and permeability coefficient are reasonably selected by influencing the slope scouring, and are brought into formula (13) to obtain the theoretical calculation results of scouring amount under different conditions.
4. The novel high polymer nano ecological sand fixing material as claimed in claim 1, wherein the test scouring amount of the sandy slope is calculated as follows:
selecting four factors of rain intensity, gradient, duration and different liquid-solid ratios to carry out indoor scouring simulation tests, wherein the test rainfall intensity is 150mm/h, 200mm/h and 250mm/h, and the rainfall converted by a rain intensity formula is respectively 3.5L/min, 4.6L/min and 5.8L/min; the rainfall lasts for 10min, 20min and 30 min; the gradient is 30 degrees, 40 degrees and 50 degrees; the liquid-solid ratio is 0:0, 1:2 and 1: 3; nine groups of tests are respectively designed through an orthogonal method, and the influence of different influence factors on the simulated slope surface scouring is known through the scouring magnitude value and the infiltration rate change of the nine groups of tests.
5. A method for reinforcing a novel high polymer nano ecological sand fixing material, which is characterized in that the novel high polymer nano ecological sand fixing material is reinforced based on the claims 1 to 4, and comprises the following specific reinforcing steps:
s1, mixing the aqueous solution and the solid material according to the liquid-solid ratio of 1:2 to prepare the membrane, wherein the aqueous solution and the solid material form a membrane through matrix cementation;
s2, paving the surface of the sandy slope by adopting a C25 concrete rib framework;
s3, installing an anchor rod and hanging a net, and paving the net film in the S1;
and S4, performing regular maintenance at the later stage.
6. The method for reinforcing novel high polymer nano ecological sand-fixing material as claimed in claim 5, wherein in S3, the net film is laid to a thickness of 2cm, the surface of the sandy slope is wrapped and air-dried naturally to form a solidified body.
CN202111074019.7A 2021-09-14 2021-09-14 Novel high polymer nano ecological sand fixation material and reinforcement method thereof Pending CN113605349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111074019.7A CN113605349A (en) 2021-09-14 2021-09-14 Novel high polymer nano ecological sand fixation material and reinforcement method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111074019.7A CN113605349A (en) 2021-09-14 2021-09-14 Novel high polymer nano ecological sand fixation material and reinforcement method thereof

Publications (1)

Publication Number Publication Date
CN113605349A true CN113605349A (en) 2021-11-05

Family

ID=78310434

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111074019.7A Pending CN113605349A (en) 2021-09-14 2021-09-14 Novel high polymer nano ecological sand fixation material and reinforcement method thereof

Country Status (1)

Country Link
CN (1) CN113605349A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1546607A (en) * 2003-12-01 2004-11-17 中国农业科学院土壤肥料研究所 Nanometer scale multifunctional sand-fixing water-loss reducer production method
CN1553002A (en) * 2003-06-03 2004-12-08 吕加平 Dual-component chemical sand-fixation material and method thereof
CN201374905Y (en) * 2008-11-04 2010-01-06 卢四甫 Sand-fixing board for sand-fixing and soil moisture preserving technology
CN103348836A (en) * 2013-06-06 2013-10-16 易志坚 Method for governing tibbas by utilizing modified sand
CN107286940A (en) * 2017-07-12 2017-10-24 中石油北京天然气管道有限公司 A kind of environment-friendly type nano sand-fixing binder and preparation method and application
CN107371446A (en) * 2017-09-04 2017-11-24 广东清大同科环保技术有限公司 It is a kind of to utilize the method for planting sand Desert Control
CN108623849A (en) * 2018-03-30 2018-10-09 何新桥 A kind of natural inorganic age-inhibiting addition and its preparation method and application
CN112175624A (en) * 2020-10-27 2021-01-05 中国科学院西北生态环境资源研究院 Nano-adhesive substrate for sand fixation, nano-biomaterial and sand fixation method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1553002A (en) * 2003-06-03 2004-12-08 吕加平 Dual-component chemical sand-fixation material and method thereof
CN1546607A (en) * 2003-12-01 2004-11-17 中国农业科学院土壤肥料研究所 Nanometer scale multifunctional sand-fixing water-loss reducer production method
CN201374905Y (en) * 2008-11-04 2010-01-06 卢四甫 Sand-fixing board for sand-fixing and soil moisture preserving technology
CN103348836A (en) * 2013-06-06 2013-10-16 易志坚 Method for governing tibbas by utilizing modified sand
CN107286940A (en) * 2017-07-12 2017-10-24 中石油北京天然气管道有限公司 A kind of environment-friendly type nano sand-fixing binder and preparation method and application
CN107371446A (en) * 2017-09-04 2017-11-24 广东清大同科环保技术有限公司 It is a kind of to utilize the method for planting sand Desert Control
CN108623849A (en) * 2018-03-30 2018-10-09 何新桥 A kind of natural inorganic age-inhibiting addition and its preparation method and application
CN112175624A (en) * 2020-10-27 2021-01-05 中国科学院西北生态环境资源研究院 Nano-adhesive substrate for sand fixation, nano-biomaterial and sand fixation method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李芬: "《砂性土边坡冲刷量计算及试验研究》", 《武汉理工大学学报(交通科学与工程版)》 *

Similar Documents

Publication Publication Date Title
Najjar et al. On the identification of compaction characteristics by neuronets
Bunte et al. Effects of rock fragment size and cover on overland flow hydraulics, local turbulence and sediment yield on an erodible soil surface
Luo et al. Influence assessment of new Inner Tube Porous Brick with absorbent concrete on urban floods control
Cheng et al. Comparative study on rain splash erosion of representative soils in China
CN101683033A (en) Method for quickly desalting dredgerfill by using desulfurization gypsum (DSG)
Yang et al. A method for estimating the interaction depth of surface soil with simulated rain
CN104891873A (en) Similar material for simulating expansible tunnel surrounding rock and preparation method of similar material
CN106190035B (en) A kind of high-strength building construction site fast filming dust suppressant
Jiang et al. A comparison of the effectiveness of the roots of two grass species in reducing soil erosion on alluvial fans in south‐east China
Bera et al. Unconfined compressive strength of fly ash reinforced with jute geotextiles
CN105862535B (en) A kind of construction method of barged-in fill curing stake roadbed
Zhang et al. Modelling subsurface storm flow with the Representative Elementary Watershed (REW) approach: application to the Alzette River Basin
Oeser et al. Hydraulic and mechanical properties of porous cement-stabilised materials for base courses of PICPs
Chua et al. Structured soil mixture for solving deformation issue in GeoBarrier System
CN113605349A (en) Novel high polymer nano ecological sand fixation material and reinforcement method thereof
Lim et al. Hydraulic characteristics and incubation methods for enhancing durability of Fungi-Mycelium treated silica sand using Rhizopus oligosporus and Rhizopus oryzae combination
Bormann et al. Comparative discharge prediction from a small artificial catchment without model calibration: Representation of initial hydrological catchment development
Jing et al. Hydraulic behavior of sandy subgrade under extreme rainfall in Alashan, China
Zhang et al. Research on the ecological protection of coal gangue slope based on a polymer curing agent
Shaikh et al. Influence of infiltration on soil erosion in green infrastructures
Fei et al. Structure and material of sports turf based on sponge-city concept: A combined experimental and numerical study
Otçu et al. Determination of the plasticity index of soils with fine-grained soils using methylene blue test
Azam et al. Influence of cracks on soil water characteristic curve
Sholehah et al. Contribution of rainfall to the risk of landslides at cisumdawu toll road phase 3 STA 0+ 975 case study
CN105350419B (en) A kind of geology grading layer that can improve moisture content and its manufacturing method

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20211105

RJ01 Rejection of invention patent application after publication