CN111090929B - Heavy haul railway throughput computing method - Google Patents
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Abstract
The invention discloses a calculation method for the passing capacity of a heavy haul railway, which comprises the following steps: loading infrastructure data, solving basic parameters, solving skylight occupation time, loading skylight data and solving heavy haul railway passing capacity. The invention brings the constraint factors of railway line infrastructure, skylight type, skylight time and station to departure number into the category of throughput capability calculation; the method considers the unequal running time of the train section, the number of stations to departure lines and the time constraint of train tracking intervals, causes the difference of the loss time outside the skylight of the V-shaped skylight and the vertical skylight and the influence on the calculation of the passing capacity, provides a method for calculating the passing capacities of the V-shaped skylight and the vertical skylight of the heavy-load railway, and has high calculation accuracy.
Description
Technical Field
The invention relates to the field of heavy haul railways, in particular to a method for calculating the passing capacity of a heavy haul railway.
Background
At present, the railway passing capability calculation method mainly comprises a deduction coefficient method, a minimum average interval method, a train operation diagram paving method through a computer and the like; the analysis of the factors influencing the passing ability mainly comprises an overrun scheme between passenger and cargo trains, a train stop scheme, a passenger and cargo train running line combination scheme, skylight arrangement and the like.
But currently there are the following problems:
(1) The heavy haul railway only runs heavy haul freight trains, the running speeds of the trains are basically the same, no over-running condition exists among the freight trains, the existing deduction coefficient method is difficult to solve the passing capacity of the heavy haul railway, and the passing capacity calculation method for the heavy haul railway needs to be researched according to the characteristics of the deduction coefficient method.
(2) Existing researches do not consider the unequal factors of the section length in the section and the running time of the train section into the calculation range of the passing capacity of the heavy haul railway, but in actual operation, the unequal factors cause larger loss time outside the skylight and have great influence on the passing capacity, so that the calculation result is inaccurate.
(3) The existing research does not consider the number of arrival/departure lines of the intermediate station for the train to stop into the calculation range of the passing capacity of the heavy haul railway, but in actual operation, when a vertical skylight is arranged, part of trains need to stop at the intermediate station, and when the distance between the stations is large, the influence of the number of arrival/departure lines of the intermediate station for the train to stop on the passing capacity is large, so that the calculation result is inaccurate.
(4) The existing researches do not consider the V-shaped skylight and the vertical skylight in the calculation range of the passing capacity of the heavy haul railway at the same time, but in actual operation, the V-shaped skylight and the vertical skylight are required to be opened for ensuring normal operation, so that the calculation result is inaccurate.
Therefore, it is necessary to provide a new method for calculating the throughput of the heavy haul railway, so as to improve the accuracy of calculating the throughput of the heavy haul railway.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for calculating the passing capability of a heavy-load railway, which comprises the steps of loading infrastructure data, solving basic parameters, solving the occupation time of a skylight, configuring skylight data, solving the passing capability of the heavy-load railway, and integrating factors such as infrastructure, different types of sky windows and the like into the category of the calculation of the passing capability, so that the calculation accuracy of the passing capability of the heavy-load railway is improved.
The invention is realized according to the following technical scheme.
A calculation method for the passing capacity of a heavy haul railway comprises the following steps:
s1, acquiring infrastructure data of a heavy haul railway, and classifying the infrastructure data according to a railway line interval and a power supply arm range;
s2, solving by adopting a train traction calculation method according to the loaded infrastructure data, wherein a solving result comprises interval running time, start-stop additional time and train tracking interval time;
s3, solving the skylight occupation time of each section and the power supply arm range by considering the skylight type, the number of stations reaching departure lines, train tracking intervals and the skylight occupation time model and constraint conditions of train section operation time factors;
s4, acquiring the opening types of the heavy-duty railway skylight and the opening time of different skylight types, and solving the proportion of the V-shaped skylight time and the vertical skylight time to the total skylight time;
s5, solving the passing capacity of the heavy haul railway according to the constraint conditions.
Further, the infrastructure data comprise railway line horizontal and vertical section data, station diagram and station to departure line data, tunnel gap data, power supply arm distribution data, maintenance skylight type data, train type and marshalling and rolling stock data;
the railway line flat profile data comprises line mileage, gradient, slope length, elevation, curve starting point mileage, curve length, curve radius and line speed limit;
the train type and consist and rolling stock data includes locomotive type and number, vehicle type and number, rolling stock performance data, train load.
Further, the basic parameter is solved by adopting a train traction calculation method according to the loading infrastructure data, and the solving result comprises interval running time
Additional time for starting and stopping>
Train tracking interval time (I);
the train tracking interval time is station departure interval time (I f ) Station inter-arrival time (I) d ) Station transit time interval (I) t ) And interval tracking interval time (I q ) The maximum of the four.
Further, the skylight occupation time refers to the time occupied by the loss of passing capacity caused by the fact that a train running line cannot be paved due to the fact that the skylight is opened;
the skylight occupation time (T w ) Comprising sunroof effective working time (T y ) Sunroof auxiliary operation time (T) f ) And sunroof outer loss time (T s )；
The effective operation time of the skylight is the time for operation such as line maintenance, contact net maintenance and the like;
the auxiliary operation time of the skylight is the operation time required for handling confirmation and the like for maintaining the skylight;
the sunroof outer loss time includes a V-shaped sunroof outer loss time
And vertical skylight outer loss time->
The loss time outside the skylight is the ratio (B) of the loss time outside the V-shaped skylight and the time of the V-shaped skylight to the total skylight time V ) And the ratio of the vertical sunroof outer loss time to the vertical sunroof time to the total sunroof time (B H ) The sum of the products of (a) is given by:
furthermore, the effective operation time of the skylight is the actual operation time for providing equipment maintenance in the skylight, and is generally determined according to the actual skylight time of a railway operation department, wherein the actual operation time is related to the size of the adopted maintenance mechanical equipment and maintenance workload.
Furthermore, the auxiliary operation time of the skylight is the auxiliary operation time before and after the operation of the skylight is performed, and is the time required by the railway transportation department, the departments such as power supply and work and the inside of each department to perform a series of operations such as contact, confirmation, release, recitation commands and the like, and is usually determined according to the actual operation time of the railway operation department.
Further, the loss time outside the V-shaped skylight is a large value of the distance between stations in the range of a line section of the V-shaped skylight and the running time of a train in the range of the length of a power supply arm.
Further, the outside of the vertical skylight loses time
Train operation time in the line section for vertical sunroof>
Additional time for starting and stopping train>
And deducting the sum of all the train occupation time of each station of the tracking operation stop along the road which can be paved in the time range, wherein the formula is as follows:
wherein n is the sum of the number of departure lines available for the train to stop at all stations in the section.
Further, the calculation formula of the passing capacity of the heavy haul railway is as follows:
wherein I is I f 、I d 、I t And I q The maximum of the four.
Further, the constraints include railway line infrastructure constraints, sunroof type and sunroof time constraints, station to departure number constraints.
The invention has the following advantages and beneficial effects.
In the calculation and analysis process, the invention considers the restrictions of railway line infrastructure, skylight type, skylight time and station arrival and departure number, overcomes the limitation that the traditional throughput calculation cannot simultaneously consider skylight, station and line factors, improves the reliability of the calculation result of the throughput of the heavy-load railway, and has obvious popularization and application values.
Drawings
FIG. 1 is a flow chart of a heavy haul railway throughput calculation method of the present invention;
FIG. 2 is a schematic view of the occupancy time of the V-shaped skylight of the present invention;
fig. 3 is a schematic view of the vertical sunroof occupancy time of the present invention.
Wherein in FIG. 2, T w The time occupied by the skylight; t (T) y The effective operation time of the skylight; t (T) f 2 is 1/2 of the auxiliary operation time of the skylight; t (T) s Time is lost outside the skylight; a. b, c and d are respectively the names of the stations;
in FIG. 3, T y The effective operation time of the skylight; t (T) f 2 is 1/2 of the auxiliary operation time of the skylight;
run time for a-b interval; />
Additional time for a-b start-stop; i is train tracking interval time; a. b, c and d are respectively the names of the stations.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to the accompanying drawings and examples. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.
The invention discloses a calculation method of the passing capacity of a heavy haul railway, which is characterized in that under the constraint of unequal running time of a train section, the number of stations to departure lines and the tracking interval of trains, a skylight outer loss time model of a V-shaped skylight and a vertical skylight is established, and the calculation method of the passing capacity of the heavy haul railway is established according to the proportion of the opening time of the V-shaped skylight and the vertical skylight on the basis.
As shown in the flowchart of fig. 1, the method for calculating the passing capability of the heavy haul railway according to the present invention includes the steps of: loading infrastructure data (S1), solving basic parameters (S2), solving skylight occupation time (S3), loading skylight data (S4), and solving heavy haul railway passing capacity (S5).
S1, loading infrastructure data
The infrastructure data comprise railway line flat profile data, station diagram and station to departure line data, tunnel gap data, power supply arm distribution data, maintenance skylight type data, train type and marshalling and rolling stock data.
The railway line flat profile data comprises line mileage, gradient, slope length, elevation, curve starting point mileage, curve length, curve radius and line speed limit.
The train type and consist and rolling stock data includes locomotive type and number, vehicle type and number, rolling stock performance data, train load.
S2, solving basic parameters
The basic parameter solving is to adopt the section 1 of train traction calculation according to the loading infrastructure data: locomotive traction train (TB/T1407.1-2018) train traction calculation method is used for solving, and the solving result comprises interval running time
Additional time for starting and stopping>
Train tracking interval (I).
The train tracking interval time is station departure interval time (I f ) Station inter-arrival time (I) d ) Station transit time interval (I) t ) And interval tracking interval time (I q ) The maximum of the four.
S3, solving the skylight occupation time
The skylight occupation time refers to the time occupied by the loss of passing capacity caused by the fact that a train running line cannot be paved due to the fact that the skylight is opened.
The skylight occupation time (T w ) Comprising sunroof effective working time (T y ) Sunroof auxiliary operation time (T) f ) And sunroof outer loss time (T s )。
The effective operation time of the skylight is the actual operation time for line maintenance, contact net maintenance and the like, and the effective operation time of the skylight is valued according to the actual skylight time of a railway operation department.
The auxiliary operation time of the skylight is the operation time of the railway related departments for handling and maintaining the skylight, such as contact, confirmation, release, recitation and the like, and is valued according to the actual operation time of the railway operation department.
The sunroof outer loss time includes a V-shaped sunroof outer loss time
And vertical sunroof outer lost time
The loss time outside the skylight is the ratio (B) of the loss time outside the V-shaped skylight and the time of the V-shaped skylight to the total skylight time V ) And the ratio of the vertical sunroof outer loss time to the vertical sunroof time to the total sunroof time (B H ) And the sum of the products of (a) is provided.
The loss time outside the V-shaped skylight is a large value of the distance between stations in the range of the V-shaped skylight opening line section and the train running time in the range of the length of the power supply arm.
The outside loss time of the vertical skylight
Train operation time within the line section for vertical skylights
Additional time for starting and stopping train>
And deducting the sum of all the train occupation time of each station of the tracking operation stop along the road which can be paved in the time range, wherein the formula is as follows:
wherein n is the sum of the number of departure lines available for the train to stop at all stations in the section.
S4, loading skylight data
According to the time for opening the V-shaped skylight and the time for opening the vertical skylight of the heavy-duty railway, the total time for opening the skylight of the heavy-duty railway is obtained, so that the proportion of the time for opening the V-shaped skylight and the vertical skylight respectively accounting for the total skylight time, namely the proportion B of the time for loading the V-shaped skylight, is calculated V And vertical sunroof time ratio B H 。
The outside loss time of the skylight is obtained:
s5, solving the passing capacity of heavy haul railway
Solving the passing capacity of the heavy haul railway according to the obtained parameters:
wherein I is I f 、I d 、I t And I q The maximum of 4.
The foregoing examples of the present invention are merely illustrative of the present invention and are not intended to limit the embodiments of the present invention, and other variations or modifications of various forms may be made by those skilled in the art based on the foregoing description, and it is not intended to be exhaustive of all embodiments, and all obvious variations or modifications that come within the scope of the invention are defined by the following claims.
Claims (7)
1. The method for calculating the passing capacity of the heavy haul railway is characterized by comprising the following steps of:
s1, loading infrastructure data;
s2, solving basic parameters;
the basic parameter solving is to solve by adopting a train traction calculation method according to the loading infrastructure data, and the solving result comprises interval running time
Additional time for starting and stopping>
Train tracking interval time I;
the train tracking interval time is station departure interval time I f Station inter-arrival time I d Station passing interval time I t Interval tracking interval time I q The maximum of the four;
s3, solving the skylight occupation time;
the skylight occupation time refers to the time occupied by the loss of passing capacity caused by the fact that a train running line cannot be paved due to the fact that the skylight is opened;
the skylight occupation time T w Including sunroof effective working time T y Skylight auxiliary operation time T f And sunroof outer loss time T s ；
The effective operation time of the skylight is the operation time for line maintenance and contact net maintenance;
the auxiliary operation time of the skylight is the confirmation operation time required by handling and maintaining the skylight;
the sunroof outer loss time includes a V-shaped sunroof outer loss time
And vertical skylight outer loss time->
The loss time outside the skylight is the ratio B of the loss time outside the V-shaped skylight and the time of the V-shaped skylight to the total skylight time V And the ratio B of the vertical skylight time to the total skylight time H The sum of the products of (a) is given by:
s4, loading skylight data;
s5, solving the passing capacity of the heavy haul railway according to the constraint conditions;
the calculation formula of the passing capacity of the heavy haul railway is as follows:
wherein I is I f 、I d 、I t And I q The maximum of the four.
2. The method for calculating the passing capability of a heavy haul railway according to claim 1, wherein the infrastructure data comprises railway line flat profile data, station yard and departure to station data, tunnel gap data, power supply arm distribution data, maintenance skylight type data, train type and consist and rolling stock data;
the railway line flat profile data comprises line mileage, gradient, slope length, elevation, curve starting point mileage, curve length, curve radius and line speed limit;
the train type and consist and rolling stock data includes locomotive type and number, vehicle type and number, rolling stock performance data, train load.
3. The method for calculating the passing capacity of the heavy haul railway according to claim 1, wherein the effective working time of the skylight is the actual working time for providing equipment maintenance in the skylight, and is determined according to the actual skylight time of a railway operation department according to the adopted maintenance mechanical equipment and the maintenance workload.
4. The method for calculating the passing capacity of the heavy haul railway according to claim 1, wherein the auxiliary operation time of the skylight is the auxiliary operation time before and after the operation of the skylight is performed, and is the time required for the railway transportation department to perform a series of connection, confirmation, release and recitation commands with the power supply and the service department, and is determined according to the actual operation time of the railway operation department.
5. The method for calculating the passing capacity of a heavy haul railway according to claim 1, wherein the V-shaped skylight outer loss time is a large value of a station distance in a range of a V-shaped skylight opening line section and a train running time in a range of a power supply arm length.
6. The method for calculating the passing capacity of a heavy haul railway according to claim 1, wherein the vertical type sunroof has a lost time
Train operation time in the line section for vertical sunroof>
Additional time with train start-stop
And deducting the sum of all train occupation time of each station along the tracked operation stop paved in the time range, wherein the formula is as follows:
wherein n is the sum of the number of departure lines available for the train to stop at all stations in the section.
7. A method of calculating the throughput of heavy haul railway as defined in claim 1, wherein said constraints include railway line infrastructure constraints, sunroof type and sunroof time constraints, station-to-departure number constraints.
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| CN111680849B (en) * | 2020-08-11 | 2020-12-29 | 北京交通大学 | Method for calculating station passing capacity under abnormal event, storage medium and terminal |
| CN113415325B (en) * | 2021-08-09 | 2022-01-28 | 中国铁道科学研究院集团有限公司通信信号研究所 | Rail transit station arrival interval calculation system and method |
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