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JP3634312B2 - Pipe drooping capacity calculation table - Google Patents
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JP3634312B2 - Pipe drooping capacity calculation table - Google Patents

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JP3634312B2
JP3634312B2 JP2002050598A JP2002050598A JP3634312B2 JP 3634312 B2 JP3634312 B2 JP 3634312B2 JP 2002050598 A JP2002050598 A JP 2002050598A JP 2002050598 A JP2002050598 A JP 2002050598A JP 3634312 B2 JP3634312 B2 JP 3634312B2
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Prior art keywords
calculation table
probability
route
capacity
pipe
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JP2002050598A
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JP2003256059A (en
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治 村岡
泰雄 黒田
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株式会社 極東技工コンサルタント
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Description

【0001】
【発明の属する技術分野】
本発明は土木設計,下水道施設計画設計ならびにそれらの調査に利用して好適な管渠流下能力計算表に関するものである。
【0002】
【従来の技術】
管渠(水路)流下能力は従来、断面,勾配等の要素で算定され、計算に使用される公式は指針・基準諸等に示されているものが使用されて、これら諸元を整理し、各路線毎に計算して流下能力計算表として一覧表に作成している。
【0003】
また、流出量は流量計算表として作成し、各路線毎に計算されるが、この流出量の算定は諸元である排水面積・確率降雨強度・流出計数により計算され、一つの降雨強度式に対して各路線の流出量が算定されて来た。
そして、現状ではこれらのことを個々に表あるいはグラフに作成し、数値的に整理したものに止まっている。
【0004】
【発明が解決しようとする課題】
しかし、管渠(水路)の流下能力を判定評価する場合、路線毎の計画値に対して能力が不足する、しないが基本であるが、水路の全体的な能力の把握が重要である。
ところが、全体的な能力把握を上記従来方式で算定された路線毎の流出量と、流下可能量(流下能力)との数値と見比べながら思い浮かべるのは非常に困難であり、見誤りやすい。
また、水路の能力表現において、流下可能量を確率年に置き換えて説明する必要が度々あり、流下能力の表現において分かり易い適切な表現が必要となっている。
【0005】
本発明は上述の如き実状に対処し、その要望に応え、水路の流下能力と比率を横棒グラフにすること、数種の確率年に対する流出量を1つの表の中に組み込むことを見出すことにより、従来の別々の表もしくはグラフからの読みとりの難解さから解放され、水路全体としての能力の判断を付き易くして、計画立案の合理的な現況把握を容易とし、下水道雨水計画におけるコスト縮減,浸水被害の撲滅を達成することを目的とするものである。
【0006】
【課題を解決するための手段】
即ち、上記目的に適合する本発明の特徴は、路線毎の流量計算諸元と、路線毎の任意に設定された数種の確率年の流出量と、各路線の管渠断面諸元及び流下可能流量,流速などを1つの計算表に夫々水路の上流から下流方向へ、表とすれば上段から下段へ表記してなる管渠流下能力計算表において、上記各路線における計画確率年に対する流下可能比率と、該比率の横棒グラフを作成し、これら比率及び横棒グラフを前記1つの計算表の各路線毎に更に併記し表示せしめた管渠下流能力計算表からなる。
なお、このとき、横棒グラフに色の変化を与え、色変化から確率年に対する能力判定を行えるようにすることが好適である。
【0007】
【作用】
既設水路を有効に利用し、改善計画を立案するような場合、路線毎の評価に加え、水路全体での総合的な流下能力の目安を立てる必要にせまられる。
【0008】
本発明計算表によれば能力を数字(パーセント)表示だけでなく棒グラフにしたことにより上下への連続性を表現できるようにし、水路全体としての能力の判断が付きやすくなっている。
また、各確率年降雨にて複数の確率年毎の流出量を確率年の低い順に表示し、既設水路の流下量に対し、量の大小により数字の色を変えることにより、その路線が、何年確率の降雨に対して能力があるのか、ないのかの判断と色の変化から横棒グラフの性格を与え確率年に対する能力判定を行えるようになった。
確率年の数値をグラフに置き換えることも可能であるが、数値にて表現すれば、誤り易い確率年の数値的倍率と計算される確率年毎流出量の数値的倍率が説明でき、理解を得られ易い。
【0009】
【発明の実施の形態】
以下、更に本発明の具体的な実施形態について詳述する。
一般に管渠の流出量,流下能力は各々、雑多な諸元、即ち、排水面積,確率降雨強度,流出計数や断面,勾配などから複雑な計算経過を経た結果の数値であり、これを如何に整理し、表現するかで具体的な考察が出来、その結果として新たな改修計画が立案される。
【0010】
本発明は上記改修計画にあたり、使用して効果的な計算表であり、図1はかかる本発明の管渠流下能力計算表の具体例を示す。
【0011】
図示計算表は水を流入点又は断面変化点で区切った水路の1区間を路線として、(1)各路線毎の流量算出諸元、(2)各路線毎の各確率年流出量、図では5年確率,7年確率,10年確率,30年確率の流出量であるが、適宜、任意に設定された数種の確率年の流出量、(3)路線毎の管渠断面諸元、(4)流下可能流量(流下能力)及び流速、(5)計画確率年に対する流下可能比率(%)及び横棒グラフによって構成されており、1つの計算表内において上記の各数値は水路の上流から下流方向へ、表においては上段から下段方向へ表記され、上下への連続性(図では下段側への連続を省略している)が表現されている。
なお、図中、上記(1)で挙示する各路線毎の流量算出諸元(排水面積,確率降雨強度,流達時間,流出係数)などについては通常、下流側管記号と確率年流出量との間に記載されるが、これらは従来の路線流出量の算定要素であり、特に本発明の特徴部分に当たらないので省略している。
ここで、上記表中において対応確率年の表示を色の変化により表示させることも好ましく、また、能力判定の判断を容易ならしめるため、横棒グラフに色の変化を与えることも好適であり、効果的である。
【0012】
しかして、上記図示計算表では、計画確率年は10年となっているが、必ずしも10年に拘泥されず、適宜、所要の計画確率年を設定することができる。
また、表中の流下可能比率(%)は計画しようとする管渠(下水管)の流量の30確率年流出量に対する比率であり、第39雨水幹線の14路線においては7.155/7.259→98.6%(近似)、16路線においては10.395/7.478→139%(近似)となっている。
【0013】
即ち、前記98.6%であれば、30年確率流出量を対象としたとき、流下能力が不足ということになり、一方、139%であれば充分な余裕を有することになる。
従って、計算表において、各路線毎に上記流下可能比率を横棒グラフ化すれば、横棒グラフを一見するだけで既設水路の流下量に対し、その路線が何年確率の降雨に対して能力があるのか、ないのかの能力判定の判断が容易となる。
【0014】
ところで、表中の確率年の数値をグラフに置き換えることも可能であるが、その場合は数値で表現すれば誤り易い確率年の数値的倍率と、計算される確率年毎流出量の数値的倍率が説明でき、理解を得るのに有利である。
【0015】
以上、本発明について説明してきたが、本発明は上記図示具体例に限られるものではなく、もの要旨を逸脱しない範囲において種々、変形が可能であることは云うまでもない。
特に流下能力比率を横棒グラフによって表現し、従来の流下能力計算表における数種の確率年に対する流出量に併記し、1つの表にまとめたことは極めて重要である。
【0016】
【発明の効果】
本発明は以上のように各路線毎に計算された流下能力及び流出量を1つの表にまとめた計算表に更に各路線における計画確率年に対する流下可能比率と、該比率をグラフ化した横棒グラフを併記表示せしめたものであり、流下能力比率を横棒グラフにしたため、水路の流下能力が性格に把握でき、また、数種の確率年に対する流出量を一つの表の中に組み込んだことで、従来の別々の表もしくはグラフからの読み取りの難解さから解放される。
従って、特に下水道雨水計画において、コスト縮減・浸水被害の撲滅・段階的な整備等が叫ばれる中、合理的な現況(流下能力)把握が容易となり、計画立案の決め手となる点で益々重要性が増大すると共に、雨水計画は、恒久的なものでなく、社会情勢・安全への関心・経済的負担等のバランスの上に成り立ち、確率年への評価と量である流出量を並記することによって、ある意味、専門的な内容を一般に分かり易い説明の道具として利用することが可能となる効果を有する。
【図面の簡単な説明】
【図1】本発明に係る管渠流下能力計算表の1例を示す概要図である。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a civil engineering design, a sewerage facility plan design, and a pipe drooping capacity calculation table suitable for use in the survey.
[0002]
[Prior art]
Pipe pipe (water channel) flow capacity has been calculated based on factors such as cross-section and gradient, and the formulas used in the calculations are those indicated in the guidelines and standards, etc. It is calculated for each route and created in the list as a flow capacity calculation table.
[0003]
In addition, the runoff is created as a flow rate calculation table and is calculated for each route. The runoff is calculated based on the drainage area, the probability rainfall intensity, and the runoff count, which are the specifications. On the other hand, the outflow of each line has been calculated.
At present, these things are created individually in tables or graphs and numerically organized.
[0004]
[Problems to be solved by the invention]
However, when judging and evaluating the flow capacity of pipes (water channels), it is basic that the capacity is insufficient or not with respect to the planned value for each line, but it is important to understand the overall capacity of the water channel.
However, it is very difficult to imagine the overall capacity grasp by comparing it with the numerical value of the outflow amount for each route calculated by the above-mentioned conventional method and the flowable amount (flowing capacity).
Further, in the expression of the capacity of the water channel, it is often necessary to explain by replacing the possible amount of flow with the probability year, and an appropriate expression that is easy to understand in the expression of the flow capacity is necessary.
[0005]
The present invention addresses the situation as described above, meets the demand, finds the flow capacity and ratio of waterways in a horizontal bar graph, and finds outflows for several probable years into one table. , Freed from the difficulty of reading from separate tables or graphs in the past, making it easy to judge the capacity of the waterway as a whole, making it easier to grasp the current state of planning, reducing costs in sewer stormwater planning, The objective is to eliminate flood damage.
[0006]
[Means for Solving the Problems]
In other words, the features of the present invention that meet the above-mentioned objectives are the flow rate calculation specifications for each route, the flow rate of several arbitrarily set probability years for each route, the pipe cross-sectional specifications and the flow-down of each route. It is possible to flow in the calculation probability year for each line in the pipe flow capacity calculation table in which the possible flow rate, flow velocity, etc. are shown in one calculation table from the upstream to the downstream of the water channel, and from the upper stage to the lower stage. A ratio and a horizontal bar graph of the ratio are prepared, and the ratio and horizontal bar graph are further composed of a pipe capacity downstream capacity calculation table that is additionally shown for each route of the one calculation table.
At this time, it is preferable to change the color of the horizontal bar graph so that the ability can be determined for the probability year from the color change.
[0007]
[Action]
When an existing waterway is used effectively and an improvement plan is made, in addition to the evaluation for each line, it is necessary to establish an overall flow capacity standard for the whole waterway.
[0008]
According to the calculation table of the present invention, the ability can be expressed not only as a number (percentage) but also as a bar graph so that continuity in the vertical direction can be expressed, and the ability of the entire waterway can be easily judged.
In addition, by displaying the runoff amount for each probability year in descending order of the probability year, and by changing the color of the number according to the amount of the flow rate of the existing waterway, what is the route? The ability to judge the probability year can be determined by giving the character of a horizontal bar graph based on the judgment of whether there is an ability for the annual probability of rainfall or not and the color change.
It is possible to replace the numerical value of the probability year with a graph. However, if expressed numerically, the numerical value of the probable year and the numerical value of the calculated annual flow rate can be explained and understood. It is easy to be done.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described in detail.
In general, pipe runoff and runoff capacity are numerical values as a result of complicated calculation processes from various specifications, that is, drainage area, probable rainfall intensity, runoff count, cross section, gradient, etc. Specific consideration can be made by organizing and expressing, and as a result, a new renovation plan is drawn up.
[0010]
The present invention is an effective calculation table to be used in the above renovation plan, and FIG.
[0011]
The illustrated calculation table shows (1) flow rate calculation specifications for each route, (2) each probable annual runoff amount for each route, with one section of the waterway divided by inflow points or cross-section change points as the route, The 5-year probability, 7-year probability, 10-year probability, and 30-year probability of spillage, but the spillage of several kinds of probability years arbitrarily set as appropriate, (3) Pipe cross-sectional specifications for each route, (4) Flowable flow rate (flowing capacity) and flow velocity, (5) Flowable ratio (%) with respect to the planned probability year, and a horizontal bar graph. Each of the above numbers from the upstream of the channel in one calculation table. In the downstream direction, in the table, it is written from the upper stage to the lower stage, and expresses continuity in the vertical direction (continuation to the lower stage is omitted in the figure).
In the figure, the flow rate calculation specifications (drainage area, probability rainfall intensity, flow time, runoff coefficient) for each route listed in (1) above are usually the downstream pipe symbol and the probability annual runoff. However, these are omitted because they are the conventional elements for calculating the route outflow amount and do not correspond to the characteristic part of the present invention.
Here, in the above table, it is also preferable to display the display of the corresponding probability year by a color change, and it is also preferable to give a color change to the horizontal bar graph in order to facilitate the judgment of ability determination. Is.
[0012]
Thus, in the illustrated calculation table, the planned probability year is 10 years, but it is not necessarily limited to 10 years, and the required planned probability year can be set as appropriate.
In addition, the flowable ratio (%) in the table is the ratio of the flow rate of pipes (sewage pipes) to be planned to the 30-year probable runoff amount, and 7.155 / 7. 259 → 98.6% (approximate), and on 16 routes, 10.395 / 7.478 → 139% (approximate).
[0013]
That is, if it is the 98.6%, the flow capacity is insufficient when the 30-year probability outflow amount is targeted, whereas if it is 139%, there is a sufficient margin.
Therefore, in the calculation table, if the above flowable ratio is converted into a horizontal bar graph for each route, the line has the capacity for the annual rainfall with respect to the flow rate of the existing water channel just by looking at the horizontal bar graph. Judgment of ability judgment of whether or not.
[0014]
By the way, it is possible to replace the numerical value of the probability year in the table with a graph, but in that case, if expressed numerically, the numerical value of the probable year that is likely to be mistaken and the numerical value of the calculated annual flow rate Can be explained, which is advantageous for understanding.
[0015]
Although the present invention has been described above, the present invention is not limited to the specific examples shown in the drawings, and it goes without saying that various modifications can be made without departing from the scope of the invention.
In particular, it is extremely important that the flow capacity ratio is expressed by a horizontal bar graph, and is written together with the outflow for several probability years in the conventional flow capacity calculation table.
[0016]
【The invention's effect】
As described above, the present invention is a calculation table in which the flow capacity and the outflow amount calculated for each route are summarized in one table, and the flowable ratio with respect to the planned probability year in each route, and a horizontal bar graph in which the ratio is graphed. Since the flow capacity ratio is a horizontal bar graph, the flow capacity of the waterway can be grasped in character, and the outflow for several kinds of probability years is incorporated into one table. You are freed from the difficulty of reading from separate traditional tables or graphs.
Therefore, especially in the sewer stormwater plan, while cost reduction, eradication of inundation damage and step-by-step maintenance are called out, it is easier to understand the rational current situation (flowing capacity), and it is becoming increasingly important as a decisive factor in planning. As rainwater plans increase, stormwater plans are not permanent, but are based on a balance of social conditions, interest in safety, economic burden, etc. In this way, there is an effect that it is possible to use a technical content in a sense as a tool for explanation that is generally easy to understand.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an example of a pipe drooping capacity calculation table according to the present invention.

Claims (2)

路線毎の流量計算諸元と、路線毎の任意に設定された数種の確率年の流出量と、各路線の管渠断面諸元及び流下可能流量,流速などを1つの計算表に夫々、水路の上流から下流方向に順次、上段から下段へ表記してなる管渠流下能力計算表において、前記各路線における計画確率年に対する流下可能比率と、該比率の横棒グラフを作成し、これら比率及び横棒グラフを前記計算表の各路線毎に更に併記し表示せしめたことを特徴とする管渠流下能力計算表。Flow rate calculation specifications for each route, flow rate of several probability years set arbitrarily for each route, pipe cross-sectional specifications of each route, flowable flow rate, flow velocity, etc. in one calculation table, In the pipe drooping capacity calculation table written in order from the upper stage to the lower stage in order from the upstream to the downstream of the water channel, a flowable ratio with respect to the planned probability year in each line and a horizontal bar graph of the ratio are created, and these ratios and A pipe drooping capacity calculation table characterized in that a horizontal bar graph is further written and displayed for each line of the calculation table. 横棒グラフに色の変化を与えた請求項1記載の管渠流下能力計算表。The pipe drooping capacity calculation table according to claim 1, wherein a color change is given to the horizontal bar graph.
JP2002050598A 2002-02-27 2002-02-27 Pipe drooping capacity calculation table Expired - Fee Related JP3634312B2 (en)

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