CN115901565A - Detection method and device for permeability coefficient of rockfill material, electronic equipment and medium - Google Patents
Detection method and device for permeability coefficient of rockfill material, electronic equipment and medium Download PDFInfo
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Abstract
The invention provides a method and a device for detecting permeability coefficient of rockfill material, electronic equipment and a medium, wherein the method comprises the following steps: acquiring a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the specific gravity of the rockfill material according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile; obtaining the dry density of the rockfill material, and calculating the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material; determining the permeability coefficient of the rockfill from the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill according to the porosity ratio of the rockfill; and under the condition that the permeability coefficient of the rockfill material is smaller than the preset coefficient, generating an indication instruction, wherein the indication instruction is used for indicating that the rockfill material with the particle size larger than the first preset particle size is adopted for filling in the filling process. The method can nondestructively measure the porosity ratio and the permeability coefficient of the rockfill material, shorten the detection time, reduce the interference on construction and improve the construction efficiency.
Description
Technical Field
The invention relates to the field of filling quality control, in particular to a method and a device for detecting permeability coefficient of rockfill material, electronic equipment and a medium.
Background
Rockfill permeability coefficient is one of the important indicators of rockfill fill quality control. In the filling stage of the rock-fill dam, after each layer of rockfill material is filled and rolled, permeability coefficient determination is carried out through a single-ring water injection method, so that the permeability coefficient of the filled rockfill material in a rockfill area is not less than a design lower limit value, and good water permeability of the rockfill material in the operation period is guaranteed. However, the field test pit seepage test has the following disadvantages: firstly, the test time is longer, the flow needs longer time, and the smaller the permeability coefficient of the rockfill material is, the longer the time needed by the test is; secondly, the dam is damaged, a single ring needs to be dug and buried in a pit on site, and the integrity of rockfill materials of the dam after rolling is damaged; thirdly, the number of detection samples is small, and due to the problem of construction period, field detection samples are generally small, and the phenomena of missing detection or no detection are easy to occur.
Disclosure of Invention
The invention provides a method and a device for detecting permeability coefficient of rockfill material, electronic equipment and a medium, which are used for solving the technical problems of long time, complicated process, dam damage and inaccurate detection of a site test pit water seepage test in a rockfill material filling stage.
In a first aspect, the invention provides a method for detecting permeability coefficient of rockfill material, comprising the following steps:
acquiring a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile;
obtaining the dry density of the rockfill material, and calculating the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material;
determining the permeability coefficient of the rockfill from the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill according to the porosity ratio of the rockfill;
under the condition that the permeability coefficient of the rockfill material is smaller than a preset coefficient, generating an instruction, wherein the instruction is used for instructing the rockfill material with the particle size larger than a first preset particle size to be used for filling in the filling process;
the first particle pile is a particle set with the particle size smaller than a second preset particle size;
the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size;
the first preset particle size is larger than the second preset particle size.
According to the method for detecting the permeability coefficient of the rockfill material, provided by the invention, the calculation of the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile comprises the following steps:
determining the mass content percentage of the first particle pile according to the mass of the first particle pile and the total mass of the rocky materials, and determining the mass content percentage of the second particle pile according to the mass of the second particle pile and the total mass of the rocky materials;
determining a first specific gravity value according to the first specific gravity and the mass content percentage of the first particle stack, and determining a second specific gravity value according to the second specific gravity and the mass content percentage of the second particle stack;
and determining the gravity of the rockfill material according to the first specific gravity value and the second specific gravity value.
According to the method for detecting the permeability coefficient of the rockfill material, provided by the invention, the method for acquiring the dry density of the rockfill material to calculate the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material comprises the following steps:
rolling the rockfill material, and determining the dry density of the rockfill material according to an additional mass method;
determining a void ratio intermediate value according to the specific gravity of the rockfill material and the dry density of the rockfill material;
and determining the porosity ratio of the rockfill material according to the porosity ratio intermediate value and a first preset constant.
According to the method for detecting the permeability coefficient of the rockfill, provided by the invention, the permeability coefficient of the rockfill is determined from the corresponding relation between the porosity ratio of the rockfill and the permeability coefficient according to the porosity ratio of the rockfill, and the method comprises the following steps:
determining a first numerical value according to the porosity ratio of the rockfill material and the particle size of the screened weight of the crushed rockfill material in a preset percentage;
determining a second numerical value according to the uneven coefficient of the soil grains after the rockfill material is rolled and the first parameter;
determining a third value according to the rockfill material porosity ratio and a second preset constant;
determining the rockfill material permeability coefficient according to the first value, the second value, the third value and a second parameter;
the grain size of the post-crushed rockfill material screening weight accounting for the preset percentage and the non-uniform coefficient of the post-crushed rockfill material soil grains are determined according to the post-crushed grading curve of the post-crushed rockfill material.
According to the method for detecting the permeability coefficient of the rockfill material, before the permeability coefficient of the rockfill material is determined, the method further comprises the following steps:
rolling the sample rockfill material for a preset number of times, and obtaining a sample permeability coefficient of the sample rockfill material after each rolling and a porosity ratio of the sample rockfill material after each rolling according to a water injection method;
constructing a fitting function according to each sample permeability coefficient and the porosity ratio of the sample rockfill material related to each sample permeability coefficient, wherein the fitting function is used for determining the corresponding relation between the rockfill material porosity ratio and the permeability coefficient;
the fitting function is determined after calibrating the first parameter and the second parameter.
According to the method for detecting the permeability coefficient of the rockfill material, the step of acquiring the first specific gravity of the first particle pile and the second specific gravity of the second particle pile in the rockfill material comprises the following steps:
sieving the rockfill material based on the second pre-set particle size holes to sieve out the first particle pile and the second particle pile;
sampling the first particle stack to obtain a first sample, and sampling the second particle stack to obtain a second sample;
and measuring the first sample according to a pycnometer to obtain a first specific gravity, and measuring the second sample according to a siphon barrel to obtain a second specific gravity.
In a second aspect, there is provided an apparatus for detecting permeability coefficient of rockfill material, comprising:
a calculation unit: the device is used for obtaining a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile;
an acquisition unit: the system is used for acquiring the dry density of the rockfill material, and calculating the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material;
a determination unit: the permeability coefficient of the rockfill is determined from the corresponding relation between the porosity ratio of the rockfill and the permeability coefficient according to the porosity ratio of the rockfill;
a generation unit: the method comprises the steps of generating an instruction under the condition that the permeability coefficient of the rockfill material is smaller than a preset coefficient, wherein the instruction is used for instructing the rockfill material with the particle size larger than a first preset particle size to be used for filling in the filling process;
the first particle pile is a particle set with the particle size smaller than a second preset particle size;
the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size;
the first preset particle size is larger than the second preset particle size.
In a third aspect, an electronic device is further provided, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the rockfill permeability coefficient detection method when executing the program.
In a fourth aspect, there is also provided a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for detecting permeability coefficient of rockfill material.
In a fifth aspect, there is also provided a computer program product comprising a computer program which, when executed by a processor, implements the method of detecting an rockfill material permeability coefficient.
The invention provides a method for detecting permeability coefficient of rockfill, which comprises the steps of obtaining the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill at the field rolling test stage, measuring the specific gravity of each particle pile after stacking the rockfill in the filling stage, further obtaining the specific gravity of the rockfill, calculating the porosity ratio of the rockfill by combining the dry density of the rockfill, determining the permeability coefficient of the rockfill from the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill, and indicating to fill by using the rockfill with larger particle size under the condition that the filling requirement is not met. The method can nondestructively measure the permeability coefficient of the rockfill material, shortens the detection time by over 50 percent compared with the traditional water injection method, reduces the interference on construction and improves the construction efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of the method for detecting permeability coefficient of rockfill material according to the present invention;
FIG. 2 is a schematic view of the process for calculating the specific gravity of the rockfill material according to the present invention;
FIG. 3 is a schematic flow chart of the calculation of the rockfill porosity ratio provided by the present invention;
FIG. 4 is a schematic view of the process for determining the permeability coefficient of rockfill material according to the present invention;
FIG. 5 is a second schematic flow chart of the method for detecting permeability coefficient of rockfill material according to the present invention;
FIG. 6 is a schematic flow chart of obtaining a first specific gravity and a second specific gravity according to the present invention;
FIG. 7 is a schematic structural view of a rockfill permeability coefficient detection apparatus according to the present invention;
fig. 8 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Fig. 1 is a schematic flow chart of a rockfill permeability coefficient detection method provided by the present invention, and the present invention provides a rockfill permeability coefficient detection method, which includes:
acquiring a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile;
obtaining the dry density of the rockfill material, and calculating the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material;
determining the permeability coefficient of the rockfill from the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill according to the porosity ratio of the rockfill;
under the condition that the permeability coefficient of the rockfill material is smaller than a preset coefficient, generating an instruction, wherein the instruction is used for instructing the rockfill material with the particle size larger than a first preset particle size to be used for filling in the filling process;
the first particle pile is a particle set with the particle size smaller than a second preset particle size;
the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size;
the first preset particle size is larger than the second preset particle size.
In step 101, the rockfill material is divided into a first particle pile and a second particle pile according to particle size, the first particle pile is a particle set with a particle size smaller than a second preset particle size, the second particle pile is a particle set with a particle size greater than or equal to the second preset particle size, optionally, the second preset particle size is 2mm, and in other embodiments, the second preset particle size may also be 3mm, 2.5mm, and the like, the first specific gravity is a relative density of the first particle pile, namely a ratio of the density of the first particle pile to a density of pure water at a temperature of 3.98 ℃ and standard atmospheric pressure, and the second specific gravity is a relative density of the second particle pile, namely a ratio of the density of the second particle pile to the density of pure water at a temperature of 3.98 ℃ and standard atmospheric pressure.
Alternatively, the specific gravity of the rock-fill material is calculated according to the first specific gravity, the mass content percentage of the first particle stack, the second specific gravity and the mass content percentage of the second particle stack.
In step 102, the dry density of the rockfill material is obtained, the porosity ratio of the rockfill material is calculated according to the specific gravity of the rockfill material and the dry density of the rockfill material, the rockfill material is processed according to a field rolling test, and the dry density of the rockfill material can be measured according to an additional mass method.
The rockfill material specific gravity can be obtained in step 101, and the rockfill material pore ratio is calculated according to the rockfill material specific gravity and the rockfill material dry density, wherein the pore ratio is the ratio of the pore volume in the soil body to the solid particle volume thereof.
In step 103, an instruction is generated when the permeability coefficient of the rockfill material is smaller than a preset coefficient, where the instruction is used to instruct to fill the rockfill material with a particle size larger than a first preset particle size in the filling process, and when the permeability coefficient of the rockfill material is smaller than the preset coefficient, the permeability coefficient of the rockfill material is considered to be smaller, and at this time, there are many particles with smaller particle sizes, which may cause a reduction in water permeability and seriously affect construction quality, so that the particles with smaller particle sizes need to be controlled in the filling process, and the particles with larger particle sizes are used to fill in a subsequent filling process, which may further increase the water permeability of the dam, so that the first preset particle size is larger than the second preset particle size.
The invention provides a method for detecting permeability coefficient of rockfill, which comprises the steps of obtaining the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill at the field rolling test stage, measuring the specific gravity of each particle pile after the rockfill is piled at the filling stage, further calculating the specific gravity of the rockfill, calculating the porosity ratio of the rockfill by combining the dry density of the rockfill, determining the permeability coefficient of the rockfill from the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill, and indicating to fill the rockfill with larger particle size under the condition that the rockfill does not meet the filling requirement. The method can nondestructively measure the permeability coefficient of the rockfill material, shortens the detection time by over 50 percent compared with the traditional water injection method, reduces the interference on construction and improves the construction efficiency.
Fig. 2 is a schematic diagram of a process for calculating the specific gravity of the rock mass according to the present invention, wherein the calculating the specific gravity of the rock mass according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile comprises:
determining the mass content percentage of the first particle pile according to the mass of the first particle pile and the total mass of the rocky materials, and determining the mass content percentage of the second particle pile according to the mass of the second particle pile and the total mass of the rocky materials;
determining a first specific gravity value according to the first specific gravity and the mass content percentage of the first particle stack, and determining a second specific gravity value according to the second specific gravity and the mass content percentage of the second particle stack;
and determining the rockfill material specific gravity according to the first specific gravity value and the second specific gravity value.
In step 1011, the mass of the first particle pile and the total mass of the rocky material are obtained, the mass content percentage of the first particle pile is determined according to the ratio of the mass of the first particle pile to the total mass of the rocky material, the mass of the second particle pile is obtained, and the mass content percentage of the second particle pile is determined according to the ratio of the mass of the second particle pile to the total mass of the rocky material.
In step 1012, a first specific gravity value is determined based on the product of the first specific gravity and the percentage by mass of the first mass of particles, and a second specific gravity value is determined based on the product of the second specific gravity and the percentage by mass of the second mass of particles.
In step 1013, the specific gravity of the rockfill material is determined according to the sum of the first specific gravity value and the second specific gravity value, and specifically, the formula may be referred to:
G s ＝P 1 *G s1 +P 2 *G s2 (1)
in the formula (1), G s Is the specific gravity of rockfill material, P 1 Is the mass content percentage of the first particle pile, P 2 Is the mass content percentage of the second particle mass, G s1 Is a first specific gravity, G s2 Is the second specific gravity.
FIG. 3 is a schematic flow chart of the method for calculating the porosity of the rockfill material, which is provided by the present invention, and the method for obtaining the dry density of the rockfill material to calculate the porosity of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material comprises the following steps:
rolling the rockfill material, and determining the dry density of the rockfill material according to an additional mass method;
determining a porosity ratio intermediate value according to the rockfill material specific gravity and the rockfill material dry density;
and determining the porosity ratio of the rockfill material according to the porosity ratio intermediate value and a first preset constant.
In step 1021, the rockfill material is rolled, and the rockfill material dry density is determined according to an additional mass method, wherein the additional mass method is a test detection method which enables an earth-rock body to be equivalent to a single-degree-of-freedom linear and elastic system, obtains the vibration mass by using the additional mass, and obtains the density by detecting the dynamic stiffness and the elastic longitudinal wave wavelength.
In step 1022, a void ratio intermediate value is determined based on the specific gravity of the rockfill material and the dry density of the rockfill material, and a void ratio intermediate value is determined based on a quotient of the specific gravity of the rockfill material and the dry density of the rockfill material.
In step 1023, the first predetermined constant may be 1, 2, 3, etc., and in an alternative embodiment, the rockfill porosity is determined by the following equation:
in the formula (2), e is the rockfill porosity ratio, G s Is the specific gravity of rockfill material, rho d Is rockfill dry density.
Fig. 4 is a schematic flow chart of the method for determining permeability coefficient of rockfill according to the present invention, wherein the determining permeability coefficient of rockfill from the corresponding relationship between the porosity ratio and the permeability coefficient includes:
determining a first numerical value according to the porosity ratio of the rockfill material and the particle size of the sieved rock mass with preset percentage after the rockfill material is rolled;
determining a second numerical value according to the uneven coefficient of the soil grains after the rockfill material is rolled and the first parameter;
determining a third numerical value according to the rockfill material porosity ratio and a second preset constant;
determining the rockfill material permeability coefficient according to the first value, the second value, the third value and a second parameter;
the grain size of the post-crushed rockfill material screening weight accounting for the preset percentage and the non-uniform coefficient of the post-crushed rockfill material soil grains are determined according to the post-crushed grading curve of the post-crushed rockfill material.
In step 1031, a first value is determined based on the rockfill porosity and the particle size at a predetermined percentage of the post-crushed rockfill screened weight, optionally 50%, and in other embodiments, 51% or 49%, i.e., based on the rockfill porosity and the particle size at 50% of the post-crushed rockfill screened weightDetermining a first value, optionally said first value may be expressed as
Wherein e is the rockfill porosity ratio, D 50 Sieving 50% by weight of the grain size after crushing rockfill material, and in other embodiments the first value can also be expressed as->
Or
In step 1032, a second numerical value is determined according to the non-uniformity coefficient of the soil grains after the stone dump rolling and the first parameter, the grain size of the sieve weight after the stone dump rolling accounting for the preset percentage and the non-uniformity coefficient of the soil grains after the stone dump rolling are determined according to the grading curve after the stone dump rolling, the grading curve generated after the stone dump rolling and corresponding to the grading curve are the existing technology which is commonly used in soil mechanics at present, and the grain size of the sieve weight after the stone dump rolling accounting for the preset percentage and the non-uniformity coefficient of the soil grains after the stone dump rolling are obtained according to the grading curve are also calculation parameters which are easily obtained. The second value may be represented as (C) u +n) 2 And in other embodiments, may also be denoted as C u + n or (C) u +n) 3 Wherein, C u The non-uniformity coefficient of the soil grains after the rockfill is rolled, and n is a first parameter.
In step 1033, a third value is determined based on the rockfill porosity ratio and a sum of a second predetermined constant, which may be 1, and in other embodiments, may be 1.3, 2.1, or 3.5.
In step 1034, the rockfill permeability coefficient is determined based on the first, second, third and second values and a second parameter, which in an alternative embodiment may be determined with reference to the following formula:
in the formula (3), K is the permeability coefficient of the rockfill material, C is a second parameter, e is the porosity ratio of the rockfill material, and D 50 Sieving 50% by weight of the granules C after crushing the rockfill material u The non-uniformity coefficient of the soil grains after the rockfill is rolled, and n is a first parameter.
Fig. 5 is a second schematic flow chart of the method for detecting permeability coefficient of rockfill material according to the present invention, before determining the permeability coefficient of rockfill material, further comprising:
rolling the sample rockfill materials for preset times, and obtaining the sample permeability coefficient of the sample rockfill materials after each rolling and the porosity ratio of the sample rockfill materials after each rolling according to a water injection method;
constructing a fitting function according to each sample permeability coefficient and the porosity ratio of the sample rockfill material related to each sample permeability coefficient, wherein the fitting function is used for determining the corresponding relation between the rockfill material porosity ratio and the permeability coefficient;
the fitting function is determined after calibrating the first parameter and the second parameter.
In step 201, rolling a sample rockfill material for a preset number of times, obtaining a sample permeability coefficient of the sample rockfill material after each rolling and a porosity ratio of the sample rockfill material after each rolling according to a water injection method, wherein the porosity ratio of the sample rockfill material is obtained according to a sample rockfill material specific gravity and a sample rockfill material dry density, the sample rockfill material specific gravity is obtained by performing particle size screening on the sample rockfill material, distinguishing a first sample pile and a second sample pile which are different in particle size, and calculating the sample rockfill material specific gravity according to the first sample pile specific gravity, the mass content percentage of the first sample pile, the second sample pile specific gravity and the mass content percentage of the second sample pile. The method comprises the steps of rolling a sample rockfill material for a preset number of times, and further measuring the sample permeability coefficient of the sample rockfill material for a plurality of times and the corresponding porosity ratio of the sample rockfill material after each rolling.
In step 202, a fitting function is constructed according to each sample permeability coefficient and the porosity ratio of the sample rockfill material related to each sample permeability coefficient, the fitting function is used for determining the corresponding relation between the rockfill material porosity ratio and the permeability coefficient, in the invention, the fitting function is constructed according to each sample permeability coefficient and the porosity ratio of the sample rockfill material related to each sample permeability coefficient, the purpose of the fitting function is to mark the first parameter and the second parameter, and due to the fact that the parameters corresponding to rocks with different lithologies are different, in combination with the situation of rolling the rockfill body on site, the invention marks the first parameter and the second parameter which are most suitable for determining the rockfill material permeability coefficient according to the specific situation on site, and substitutes the first parameter and the second parameter into the formula (3). The fitting function may be an expression in the expression (3), and may also be other polynomial expressions, which are not described herein again.
The invention combines an additional mass device and adopts an additional mass method to realize the rapid nondestructive measurement of the permeability coefficient of the rockfill material on site, and the permeability coefficient measurement is divided into two stages: in the field rolling test stage, calibrating test parameters; and in the filling stage, on-site detection is carried out, and the validity of the detection method and the result is verified by a water injection method.
Fig. 6 is a schematic flow chart of the present invention for obtaining the first specific gravity and the second specific gravity of the first particle pile and the second particle pile in the rockfill material, including:
screening the rockfill material based on the second preset-particle-size holes to screen out the first particle stack and the second particle stack;
sampling the first particle stack to obtain a first sample, and sampling the second particle stack to obtain a second sample;
and measuring the first sample according to the pycnometer to obtain a first specific gravity, and measuring the second sample according to the siphon barrel to obtain a second specific gravity.
In step 301, the rock-fill material is sieved based on the holes with the second preset particle size to sieve out the first particle pile and the second particle pile, the size of the holes is adapted to the second preset particle size, and then the first particle pile and the second particle pile are sieved out according to the holes, wherein the first particle pile is a particle set with a particle size smaller than the second preset particle size, and the second particle pile is a particle set with a particle size larger than or equal to the second preset particle size.
In step 302, the first particle stack is sampled to obtain a first sample, the second particle stack is sampled to obtain a second sample, and optionally, three portions of the first sample, each portion being 150g, and three portions of the second sample, each portion being 5kg, are weighed.
In step 303, the first sample is measured according to the pycnometer to obtain a first specific gravity, and the second sample is measured according to the siphon barrel to obtain a second specific gravity.
Fig. 7 is a schematic structural diagram of an apparatus for detecting permeability coefficient of rockfill material according to the present invention, which includes a computing unit 1: the calculating unit 1 is configured to obtain a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculate a specific gravity of the rockfill material according to the first specific gravity, a mass content percentage of the first particle pile, the second specific gravity, and a mass content percentage of the second particle pile, and the working principle of the calculating unit may refer to the step 101, which is not described herein again.
The detection device for the permeability coefficient of the rockfill material further comprises an acquisition unit 2: for obtaining the dry density of the rockfill material, and calculating the void ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material, the operation principle of the obtaining unit 2 may refer to the step 102, which is not described herein again.
The apparatus for detecting permeability coefficient of rockfill material further includes a determination unit 3: for determining the permeability coefficient of the rockfill material from the corresponding relationship between the porosity ratio of the rockfill material and the permeability coefficient according to the porosity ratio of the rockfill material, the working principle of the determining unit 3 may refer to the foregoing step 103, which is not described herein again.
The rockfill material permeability coefficient detection device further comprises a generation unit 4: the generating unit 4 is configured to generate an instruction for instructing to perform filling by using rockfill materials with particle sizes larger than a first preset particle size in a filling process when the permeability coefficient of the rockfill materials is smaller than a preset coefficient, and the working principle of the generating unit 4 may refer to the step 104, which is not described herein again.
The first particle pile is a particle set with the particle size smaller than a second preset particle size;
the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size;
the first preset particle size is larger than the second preset particle size.
The invention provides a method for detecting permeability coefficient of rockfill, which comprises the steps of obtaining the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill at the field rolling test stage, measuring the specific gravity of each particle pile after the rockfill is piled at the filling stage, further calculating the specific gravity of the rockfill, calculating the porosity ratio of the rockfill by combining the dry density of the rockfill, determining the permeability coefficient of the rockfill from the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill, and indicating to fill the rockfill with larger particle size under the condition that the rockfill does not meet the filling requirement. The method can be used for nondestructively measuring the permeability coefficient of the rockfill material, shortens the detection time by over 50 percent compared with the traditional water injection method, reduces the interference on construction and improves the construction efficiency.
Fig. 8 is a schematic structural diagram of an electronic device provided by the present invention. As shown in fig. 8, the electronic device may include: a processor (processor) 810, a communication Interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication Interface 820 and the memory 830 communicate with each other via the communication bus 840. The processor 810 may invoke logic instructions in the memory 830 to perform a method of rockfill material permeability coefficient detection, the method comprising: acquiring a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile; obtaining the dry density of the rockfill material, and calculating the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material; determining the permeability coefficient of the rockfill from the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill according to the porosity ratio of the rockfill; under the condition that the permeability coefficient of the rockfill material is smaller than a preset coefficient, generating an indication instruction, wherein the indication instruction is used for indicating that the rockfill material with the particle size larger than a first preset particle size is adopted for filling in the filling process; the first particle pile is a particle set with the particle size smaller than a second preset particle size; the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size; the first preset particle size is larger than the second preset particle size.
In addition, the logic instructions in the memory 830 can be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing a method for detecting permeability coefficient of rockfill material, the method comprising: acquiring a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile; obtaining the dry density of the rockfill material, and calculating the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material; determining the permeability coefficient of the rockfill material from the corresponding relation between the porosity ratio of the rockfill material and the permeability coefficient according to the porosity ratio of the rockfill material; under the condition that the permeability coefficient of the rockfill material is smaller than a preset coefficient, generating an instruction, wherein the instruction is used for instructing the rockfill material with the particle size larger than a first preset particle size to be used for filling in the filling process; the first particle pile is a particle set with the particle size smaller than a second preset particle size; the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size; the first preset particle size is larger than the second preset particle size.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for detecting permeability coefficient of rockfill material provided by the methods described above, the method comprising: acquiring a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile; obtaining the dry density of the rockfill material, and calculating the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material; determining the permeability coefficient of the rockfill material from the corresponding relation between the porosity ratio of the rockfill material and the permeability coefficient according to the porosity ratio of the rockfill material; under the condition that the permeability coefficient of the rockfill material is smaller than a preset coefficient, generating an indication instruction, wherein the indication instruction is used for indicating that the rockfill material with the particle size larger than a first preset particle size is adopted for filling in the filling process; the first particle pile is a particle set with the particle size smaller than a second preset particle size; the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size; the first preset particle size is larger than the second preset particle size.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for detecting permeability coefficient of rockfill material is characterized by comprising the following steps:
acquiring a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile;
acquiring the dry density of the rockfill material, and calculating the porosity ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material;
determining the permeability coefficient of the rockfill from the corresponding relation between the porosity ratio and the permeability coefficient of the rockfill according to the porosity ratio of the rockfill;
under the condition that the permeability coefficient of the rockfill material is smaller than a preset coefficient, generating an instruction, wherein the instruction is used for instructing the rockfill material with the particle size larger than a first preset particle size to be used for filling in the filling process;
the first particle pile is a particle set with the particle size smaller than a second preset particle size;
the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size;
the first preset particle size is larger than the second preset particle size.
2. The method for detecting the permeability coefficient of the rockfill material according to claim 1, wherein the calculating the rockfill material specific gravity based on the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile comprises:
determining the mass content percentage of the first particle pile according to the mass of the first particle pile and the total mass of the rocky materials, and determining the mass content percentage of the second particle pile according to the mass of the second particle pile and the total mass of the rocky materials;
determining a first specific gravity value according to the first specific gravity and the mass content percentage of the first particle stack, and determining a second specific gravity value according to the second specific gravity and the mass content percentage of the second particle stack;
and determining the gravity of the rockfill material according to the first specific gravity value and the second specific gravity value.
3. The method for detecting the permeability coefficient of the rockfill material according to claim 1, wherein the obtaining of the dry rockfill material density to calculate the porosity of the rockfill material according to the specific gravity of the rockfill material and the dry rockfill material density includes:
rolling the rockfill material, and determining the dry density of the rockfill material according to an additional mass method;
determining a void ratio intermediate value according to the specific gravity of the rockfill material and the dry density of the rockfill material;
and determining the rockfill material porosity ratio according to the porosity ratio intermediate value and a first preset constant.
4. The method for detecting permeability coefficient of rockfill according to claim 1, wherein the determining permeability coefficient of rockfill from the correspondence between the porosity ratio and the permeability coefficient according to the porosity ratio of rockfill comprises:
determining a first numerical value according to the porosity ratio of the rockfill material and the particle size of the screened weight of the crushed rockfill material in a preset percentage;
determining a second numerical value according to the uneven coefficient of the soil grains after the rockfill material is rolled and the first parameter;
determining a third numerical value according to the rockfill material porosity ratio and a second preset constant;
determining the rockfill material permeability coefficient according to the first value, the second value, the third value and a second parameter;
the grain size of the post-crushed rockfill material screening weight accounting for the preset percentage and the non-uniform coefficient of the post-crushed rockfill material soil grains are determined according to the post-crushed grading curve of the post-crushed rockfill material.
5. The method of claim 4, wherein prior to determining the permeability coefficient, further comprising:
rolling the sample rockfill material for a preset number of times, and obtaining a sample permeability coefficient of the sample rockfill material after each rolling and a porosity ratio of the sample rockfill material after each rolling according to a water injection method;
constructing a fitting function according to each sample permeability coefficient and the porosity ratio of the sample rockfill material related to each sample permeability coefficient, wherein the fitting function is used for determining the corresponding relation between the rockfill material porosity ratio and the permeability coefficient;
the fitting function is determined after calibrating the first parameter and the second parameter.
6. The method for detecting permeability coefficient of rockfill material according to claim 1, wherein said obtaining a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material comprises:
sieving the rockfill material based on the second pre-set particle size holes to sieve out the first particle pile and the second particle pile;
sampling the first particle stack to obtain a first sample, and sampling the second particle stack to obtain a second sample;
and measuring the first sample according to a pycnometer to obtain a first specific gravity, and measuring the second sample according to a siphon barrel to obtain a second specific gravity.
7. A rockfill material permeability coefficient detection device is characterized by comprising:
a calculation unit: the device is used for obtaining a first specific gravity of a first particle pile and a second specific gravity of a second particle pile in the rockfill material, and calculating the rockfill material specific gravity according to the first specific gravity, the mass content percentage of the first particle pile, the second specific gravity and the mass content percentage of the second particle pile;
an acquisition unit: the device is used for acquiring the dry density of the rockfill material so as to calculate the void ratio of the rockfill material according to the specific gravity of the rockfill material and the dry density of the rockfill material;
a determination unit: the permeability coefficient of the rockfill is determined from the corresponding relation between the porosity ratio of the rockfill and the permeability coefficient according to the porosity ratio of the rockfill;
a generation unit: the method comprises the steps of generating an instruction under the condition that the permeability coefficient of the rockfill material is smaller than a preset coefficient, wherein the instruction is used for instructing the rockfill material with the particle size larger than a first preset particle size to be used for filling in the filling process;
the first particle pile is a particle set with the particle size smaller than a second preset particle size;
the second particle pile is a particle set with the particle size larger than or equal to a second preset particle size;
the first preset particle size is larger than the second preset particle size.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the rockfill material permeability coefficient detection method according to any one of claims 1 to 6.
9. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the rockfill material permeability coefficient detection method according to any one of claims 1 to 6.
10. A computer program product comprising a computer program, wherein the computer program, when executed by a processor, implements the rockfill permeability coefficient detection method according to any one of claims 1 to 6.
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