JP6725916B2 - Cement-based mixed material manufacturing system and cement-based mixed material manufacturing method - Google Patents
Cement-based mixed material manufacturing system and cement-based mixed material manufacturing method Download PDFInfo
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- 239000004568 cement Substances 0.000 title claims description 129
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 153
- 239000002245 particle Substances 0.000 claims description 108
- 238000009826 distribution Methods 0.000 claims description 68
- 238000012544 monitoring process Methods 0.000 claims description 37
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- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Description
本発明は、現地発生土や現地採取土等の地盤材料にセメントと水を混合したセメント系混合材料の製造システムおよびセメント系混合材料の製造方法に関する。 The present invention relates to a cement-based mixed material manufacturing system and a cement-based mixed material manufacturing method in which cement and water are mixed with a ground material such as locally generated soil or locally extracted soil.
現地発生土や現地採取土等の地盤材料に、セメント系の改良材を混合することにより製造されるセメント系混合材料は、コスト縮減と環境保全を可能にする材料として、盛土やダム、堤防、砂防、舗装等の土木構造物に有効活用が図られている。 Cement-based mixed materials manufactured by mixing cement-based improvement materials with ground materials such as locally-generated soil and locally-extracted soil are embankments, dams, levees, and embankments as materials that enable cost reduction and environmental conservation. It is effectively used for civil engineering structures such as erosion control and pavement.
セメント系混合材料のなかでも安定処理土やＣＳＧ等に採用される地盤材料は、一般に分級や粒度調整、洗浄等が行われないことから、土木構造物を施工する際には、粒度と単位水量の変動を許容しつつ、材料管理や強度管理等の品質管理を実施している。しかし、品質管理のなかでも材料管理を実施するにあたり、地盤材料に対してリアルタイムで全量分析を行うことの可能な技術が確立されていない。このため現状では、一定の期間もしくは一定量毎に地盤材料のサンプルを抜き取り、ふるい分け法等にて粒度分布を算出し、電子レンジ法等にて表面水量を算出する等、従来より実施されている試験法にて管理を行っており、多大な手間と時間をするとともに、急な材質変化に対しては何ら対策を講じることができなかった。 Among cement-based mixed materials, ground materials used for stabilized soil and CSG are generally not subjected to classification, particle size adjustment, cleaning, etc. Therefore, when constructing civil engineering structures, particle size and unit water amount The quality control such as the material control and the strength control is carried out while allowing the fluctuation of. However, in terms of quality control, among the quality controls, a technique capable of performing real-time full-scale analysis of the ground material has not been established. For this reason, at present, it has been practiced conventionally that a sample of the ground material is sampled for a certain period or every certain amount, the particle size distribution is calculated by the sieving method, and the surface water amount is calculated by the microwave oven method. Since it is managed by the test method, it takes a lot of time and labor, and it is impossible to take any measures against a sudden material change.
このような中、例えば特許文献１には、地盤材料の表面水量を管理する方法が開示されている。具体的には、工事現場へ継続的に供給される地盤材料の搬送路に、含水率計測装置を設置して地盤材料の全粒径を対象とした含水率を測定し、所定時間ｔごとに地盤材料の粒度検出の必要性を判定する。粒度検出が必要な場合には、サンプルを抜き取って重量を計測するとともに、画像解析により粒度分布を算出して粒径別材料ごとの重量比を算出し、この重量比と先に測定した全粒径を対象とした含水率から粒径別の含水率を算出する。 Under such circumstances, for example, Patent Document 1 discloses a method of managing the amount of surface water of the ground material. Specifically, a water content measuring device is installed in the transportation path of the ground material that is continuously supplied to the construction site to measure the water content for all particle sizes of the ground material, and every predetermined time t Determine the need for particle size detection of ground material. When it is necessary to detect the particle size, a sample is taken out and the weight is measured, and the particle size distribution is calculated by image analysis to calculate the weight ratio for each material by particle size. The water content for each particle size is calculated from the water content for the diameter.
これら粒径別の含水率に基づいて全粒径の表面水量を算出して正常か否かを判別し、正常でないと判別された場合には、あらかじめ設定されている単位水量を再設定する。その後、搬送路上の地盤材料の重量を測定し、重量と先に算出した表面水量から最適な加水量を算出し、搬送路上の地盤材料に給水を行う。この作業を継続的に工事現場に供給される地盤材料に対して繰り返す。 The amount of surface water of all particle sizes is calculated based on the water content of each particle size to determine whether it is normal or not. If it is not normal, the preset unit water amount is reset. After that, the weight of the ground material on the transport path is measured, the optimum amount of water is calculated from the weight and the surface water amount calculated previously, and water is supplied to the ground material on the transport path. This work is repeated for the ground material continuously supplied to the construction site.
上記の方法は、画像解析により粒度分布を算出することから、ふるい分け法等にて粒度分布を算出する場合と比較して作業性が向上する。しかし、工事現場へ継続的に供給される地盤材料のなかからサンプルを抜き取り、このサンプルに対して画像解析を実施するものであって、供給される地盤材料をリアルタイムで全量分析するものではないため、必ずしも高い精度で粒度分布が算出されるとは言えない。 Since the above method calculates the particle size distribution by image analysis, the workability is improved as compared with the case where the particle size distribution is calculated by a sieving method or the like. However, the sample is extracted from the ground material that is continuously supplied to the construction site, and the image analysis is performed on this sample, and the ground material that is supplied is not completely analyzed in real time. However, it cannot be said that the particle size distribution is calculated with high accuracy.
また、これらサンプルの重量とサンプルから算出した粒度分布を用いて粒径別材料ごとの重量比を算出し、この重量比に基づいて表面水量を算出するため、粒度分布と同様に表面水量の算出値についても信頼性に劣る。 In addition, the weight ratio of each material by particle size is calculated using the weight of these samples and the particle size distribution calculated from the sample, and the surface water amount is calculated based on this weight ratio. The value is also unreliable.
本発明は、かかる課題に鑑みなされたものであって、その主な目的は、連続的に搬送される地盤材料の粒度分布（重量比）および含水率をリアルタイムで連続的に算出し、その変動量に応じてセメント量および加水量を自動的に調整することの可能な、セメント系混合材料の製造システムおよびセメント系混合材料の製造方法を提供することである。 The present invention has been made in view of the above problems, and its main purpose is to continuously calculate in real time the particle size distribution (weight ratio) and water content of the ground material that is continuously conveyed, and to fluctuate the fluctuation. It is to provide a cement-based mixed material manufacturing system and a cement-based mixed material manufacturing method capable of automatically adjusting the amount of cement and the amount of water added depending on the amount.
かかる目的を達成するため、本発明のセメント系混合材料の製造システムは、ベルトコンベヤ装置と３Ｄラインレーザーカメラとを備え、前記ベルトコンベヤ装置のコンベヤベルト上に連続的に撒き出された地盤材料の三次元表面形状データを取得する粒度監視設備と、該粒度監視設備の前記ベルトコンベヤ装置から前記地盤材料が連続的に投下される、密度水分計が設置されたホッパを備え、該ホッパに投下された前記地盤材料の含水率を計測する含水率監視設備と、該含水率監視設備から前記地盤材料が連続的に投下される、重量計が設置されたベルトコンベヤ装置を備え、該ベルトコンベヤ装置に投下された前記地盤材料の単位時間当たりの搬送重量を測定するとともに、前記地盤材料にセメント及び水を添加して混練し、セメント系構造材料を製造する混合設備と、前記三次元表面形状データに基づいて前記地盤材料の粒度分布（重量比）を算出する粒度分布算出部、前記粒度分布（重量比）と前記搬送重量に基づいて調整した前記セメントの添加量を算出するセメント量調整部、および前記含水率と前記搬送重量に基づいて調整した前記水の添加量を算出する加水量調整部、を備える管理制御装置と、を有することを特徴とする。 In order to achieve such an object, the cement-based mixed material manufacturing system of the present invention includes a belt conveyor device and a 3D line laser camera, and comprises a ground material continuously spread on a conveyor belt of the belt conveyor device . Particle size monitoring equipment for acquiring three-dimensional surface shape data, and the ground material is continuously dropped from the belt conveyor device of the particle size monitoring equipment, equipped with a hopper provided with a density moisture meter, and dropped into the hopper. The water content monitoring equipment for measuring the water content of the ground material, and the ground material continuously dropped from the water content monitoring equipment, equipped with a belt conveyor device with a weight scale installed, in the belt conveyor device Along with measuring the transported weight per unit time of the ground material dropped, kneading by adding cement and water to the ground material, mixing equipment for manufacturing a cement-based structural material, and the three-dimensional surface shape data Based on the particle size distribution (weight ratio) of the ground material based on the particle size distribution calculation unit, a cement amount adjustment unit that calculates the added amount of the cement adjusted based on the particle size distribution (weight ratio) and the transport weight, and A management control device comprising: a water addition amount adjusting unit that calculates the amount of water added, which is adjusted based on the water content and the transport weight.
本発明のセメント系混合材料の製造システムは、前記密度水分計が、前記ホッパの排出口近傍であって平面視で互い向かい合うことのない位置に対をなして配置されていることを特徴とする。 The cement-based mixed material manufacturing system of the present invention is characterized in that the density moisture meter is arranged in a pair in the vicinity of the discharge port of the hopper so as not to face each other in a plan view. ..
本発明のセメント系混合材料の製造方法は、本発明のセメント系混合材料の製造システムを用いたセメント系混合材料の製造方法であって、連続して搬送される前記地盤材料の前記粒度分布（重量比）、前記含水率および前記搬送重量を所定時間の経過ごとに算出し、前記粒度分布（重量比）に基づいて単位セメント量を調整し、この単位セメント量と前記搬送重量に基づいて調整した前記セメントの添加量を算出するとともに、前記含水率に基づいて単位水量を調整し、この単位水量と前記搬送重量に基づいて調整した前記水の添加量を算出し、前記地盤材料にセメント及び水を添加して混練する際に、前記所定時間の経過ごとに前記セメントおよび水のうち少なくともいずれか一方を、あらかじめ規定した量に代えて調整した添加量にて搬送されてきた前記地盤材料に添加することを特徴とする。 A method for producing a cement-based mixed material according to the present invention is a method for producing a cement-based mixed material using the production system for a cement-based mixed material according to the present invention, wherein the particle size distribution of the ground material continuously conveyed ( Weight ratio), the water content and the transport weight are calculated for each predetermined time, the unit cement amount is adjusted based on the particle size distribution (weight ratio), and the unit cement amount and the transport weight are adjusted. Along with calculating the added amount of the cement, adjusting the unit water amount based on the water content, calculate the addition amount of water adjusted based on the unit water amount and the transport weight, cement and the ground material At the time of adding water and kneading, at least one of the cement and water for each elapse of the predetermined time, to the ground material that has been conveyed in an adjusted addition amount in place of a predetermined amount. It is characterized in that it is added.
本発明のセメント系混合材料の製造システム及びセメント系混合材料の製造方法によれば、所定時間の経過ごとで粒度分布（重量比）を算出するとともに含水率および時間当たりの搬送重量を算出し、所定時間の経過ごとに地盤材料に見合うよう調整したセメント及び水の添加量を算出するため、これを添加することにより連続して供給される地盤材料に粒度のバラツキや含水率のバラツキがある場合であっても、均一で高品質なセメント系混合材料を製造することが可能となる。 According to the cement-based mixed material manufacturing system and the cement-based mixed material manufacturing method of the present invention, the particle size distribution (weight ratio) is calculated every time a predetermined time elapses and the water content and the transport weight per hour are calculated, When the added amount of cement and water adjusted to suit the ground material is calculated after a lapse of a predetermined time, when the ground material continuously supplied by adding this has a variation in particle size and a variation in water content. Even in this case, it is possible to manufacture a uniform and high quality cement-based mixed material.
また、所定時間の経過ごとの粒度分布（重量比）が、連続的に搬送される地盤材料の全量をリアルタイムで撮像した三次元表面形状データから算出されるため、サンプルを抜き取って粒度分布（重量比）を算出する場合と比較して、高い信頼性を確保することが可能となる。また、粒度分布（重量比）の算出に多大な時間を要することもない。 In addition, the particle size distribution (weight ratio) for each lapse of a predetermined time is calculated from the three-dimensional surface shape data obtained by real-time imaging of the total amount of the ground material that is continuously conveyed. It is possible to secure high reliability as compared with the case of calculating (ratio). In addition, it does not take a long time to calculate the particle size distribution (weight ratio).
本発明のセメント系混合材料の製造方法は、前記含水率が、前記地盤材料の複数地点で計測した含水率を平均して算出された調整含水率であることを特徴とする。 The method for producing a cementitious mixed material of the present invention is characterized in that the water content is an adjusted water content calculated by averaging the water content measured at a plurality of points of the ground material.
上述する本発明のセメント系混合材料の製造方法によれば、投入された地盤材料の複数地点で計測した含水率の平均値である調整含水率を用いるため、より高い精度をもって加水量の見直し調整を実施することが可能となる。 According to the method for producing a cement-based mixed material of the present invention described above, the adjusted water content, which is the average value of the water content measured at a plurality of points of the input ground material, is used, so that the water content is reviewed and adjusted with higher accuracy. Can be carried out.
本発明のセメント系混合材料の製造方法は、所定時間の経過ごとに算出される前記粒度分布（重量比）および前記含水率が、あらかじめ規定した時間間隔内の平均値を前記所定時間の経過ごとに連続して算出する移動平均によるものであることを特徴とする。 The method for producing a cementitious mixed material according to the present invention is such that the particle size distribution (weight ratio) and the water content calculated for each elapse of a predetermined time is an average value within a predetermined time interval for each elapse of the predetermined time. Is a moving average continuously calculated.
上述する本発明のセメント系混合材料の製造方法によれば、所定時間の経過ごとで算出される粒度分布（重量比）および含水率が、移動平均よりなるから、所定時間ごとに算出した粒度分布（重量比）もしくは含水率に不規則な変動があっても均されるため、セメントおよび水の添加量の調整を精度よく実施することが可能となる。 According to the method for producing a cementitious mixed material of the present invention described above, since the particle size distribution (weight ratio) and the water content calculated at each elapse of a predetermined time consist of a moving average, the particle size distribution calculated at each predetermined time Even if there is an irregular fluctuation in (weight ratio) or water content, it is possible to adjust the addition amounts of cement and water with high accuracy.
本発明によれば、連続的に搬送される地盤材料の粒度分布（重量比）および含水率をリアルタイムで連続的に算出し、その変動量に応じてセメント量および加水量を調整するため、地盤材料の品質にバラツキがある場合にもに均一な品質を簡略な方法で確保することが可能となる。 According to the present invention, the particle size distribution (weight ratio) and the water content of the continuously conveyed ground material are continuously calculated in real time, and the amount of cement and the amount of water added are adjusted according to the amount of fluctuation, so Even if the quality of the material varies, it is possible to ensure uniform quality by a simple method.
本発明のセメント系混合材料の製造システムは、安定処理土やＣＳＧ等の土木構造物を築造する際の材料となるセメント系混合材料を製造するための設備であり、セメント系混合材料とは、施工現場近傍で入手可能な現地採取土や現場発生土等の地盤材料にセメント系固化材（以下、セメントと言う）および水を混合したものをいう。以下に、図１〜図９を参照して説明する。 The cement-based mixed material manufacturing system of the present invention is a facility for manufacturing a cement-based mixed material that is a material when constructing a civil engineering structure such as stabilized soil and CSG, and the cement-based mixed material is It refers to a mixture of ground material such as locally collected soil and soil generated at the site, which is available near the construction site, with cement-based solidifying material (hereinafter referred to as cement) and water. Below, it demonstrates with reference to FIGS.
セメント系混合材料の製造システム１は、図１及び図２で示すように、地盤材料１００の三次元表面形状データを取得するための粒度監視設備１０、地盤材料１００の含水率を計測するための含水率監視設備２０、地盤材料１００の時間当たりの搬送重量を測定するとともに、セメントおよび水を添加して地盤材料１００と混練するための混合設備３０、および粒度監視設備１０、含水率監視設備２０、混合設備３０各々と通信接続される管理制御装置４０を備えている。 As shown in FIGS. 1 and 2, the cement-based mixed material manufacturing system 1 includes a particle size monitoring facility 10 for acquiring three-dimensional surface shape data of the ground material 100 and a water content of the ground material 100 for measuring the water content. Water content monitoring equipment 20, mixing equipment 30 for measuring the transported weight of the ground material 100 per hour and kneading with the ground material 100 by adding cement and water, a particle size monitoring equipment 10, and a water content monitoring equipment 20. , A management control device 40 that is communicatively connected to each of the mixing facilities 30.
管理制御装置４０は、図２で示すように、情報処理装置４１、入力装置４２および出力装置４３を少なくとも備えるいわゆるコンピュータであり、情報処理装置４１は演算処理装置及び記憶装置等のハードウェアと、該ハードウェア上で動作するソフトウェアとで構成されている。なお、記憶装置には、あらかじめ室内配合試験および試験施工した際の、地盤材料１００の粒度分布（重量比）、およびこれら試験にて規定した単位セメント量および単位水量が格納されている。 As shown in FIG. 2, the management control device 40 is a so-called computer including at least an information processing device 41, an input device 42, and an output device 43. The information processing device 41 includes hardware such as an arithmetic processing device and a storage device. It is composed of software that operates on the hardware. The storage device stores the particle size distribution (weight ratio) of the ground material 100 and the unit cement amount and unit water amount defined in these tests when the interior mixing test and the test construction are performed in advance.
これらセメント系混合材料の製造システム１を利用したセメント系混合材料の製造方法は、連続して搬送される地盤材料１００に対して所定時間の経過ごとで、粒度分布（重量比）、含水率および時間当たりの搬送重量（ｋｇ/ｍ3）を算出する。そして、この算出結果に基づいて、所定時間の経過ごとに地盤材料１００に見合うよう調整したセメント及び水の添加量を算出し、セメント及び水の少なくとも一方の添加量をあらかじめ規定した添加量に代えて調整した数量にて添加し、連続的にセメント系混合材料１３０を製造する方法である。 A method for manufacturing a cement-based mixed material using the cement-based mixed material manufacturing system 1 is such that the particle size distribution (weight ratio), water content and Calculate the transport weight per hour (kg/m 3 ). Then, based on this calculation result, the added amount of cement and water adjusted to suit the ground material 100 is calculated every time a predetermined time elapses, and the added amount of at least one of the cement and water is replaced with a predetermined added amount. Is a method of continuously producing the cement-based mixed material 130 by adding in an amount adjusted by.
本実施の形態では、１分が経過するごとに地盤材料１００に見合うよう調整したセメント及び水の添加量にてセメント系混合材料を製造する場合を事例とし、セメント系混合材料の製造システム１の詳細とセメント系混合材料の製造方法を併せて、図９のフロー図に示した手順（ｓｔｅｐ１〜ｓｔｅｐ９）に沿って、以下に詳述する。 In the present embodiment, the case where the cement-based mixed material is manufactured with the added amount of cement and water adjusted so as to match the ground material 100 every one minute is taken as an example, and the cement-based mixed material manufacturing system 1 The details and the method for producing the cement-based mixed material will be described in detail below along the procedure (step 1 to step 9) shown in the flowchart of FIG. 9.
（ｓｔｅｐ１およびｓｔｅｐ２）
地盤材料１００を粒度監視設備１０に連続的に供給し、リアルタイムで連続的に地盤材料１００の三次元画像表面形状データを取得する。本実施の形態では、地盤材料１００に、分級や粒度調整、洗浄等が行われない現地発生土もしくは現地採取土を採用しているが、必ずしもこれに限定されるものではなく、安定処理土やＣＳＧ等の土木構造物を築造する際に用いられるセメント系混合材料に採用される地盤材料であれば、いずれでもよい。
(Step1 and step2)
The ground material 100 is continuously supplied to the particle size monitoring facility 10, and three-dimensional image surface shape data of the ground material 100 is continuously acquired in real time. In the present embodiment, the soil material 100 employs locally generated soil or locally extracted soil that is not subjected to classification, particle size adjustment, cleaning, etc., but is not necessarily limited to this, and stabilized soil or Any ground material may be used as long as it is a ground material used as a cement-based mixed material used when building a civil engineering structure such as CSG.
<粒度監視設備１０>
図１で示すように、粒度監視設備１０は地盤材料１００の三次元画像表面形状データを取得する設備であり、ベルトコンベヤ装置１４、およびコンベヤベルト１３の搬送面に撒き出される地盤材料１００を撮像する３Ｄラインレーザーカメラ１５を備えている。
<Particle size monitoring equipment 10>
As shown in FIG. 1, the particle size monitoring facility 10 is a facility for acquiring three-dimensional image surface shape data of the ground material 100, and images the ground material 100 sprinkled on the conveyor surface of the belt conveyor device 14 and the conveyor belt 13. The 3D line laser camera 15 is provided.
ベルトコンベヤ装置１４は、バラ荷を搬送する際に一般に使用される装置であり、本実施の形態では、ベルトフィーダ１２のフィーダー速度およびコンベヤベルト１３のベルト速度をそれぞれ調整可能な調整機構を備えている。これにより、フィーダー速度がコンベヤベルト１３のベルト速度より遅くなるよう調整し、ホッパ１１からベルトフィーダ１２を介して撒き出される地盤材料１００を、コンベヤベルト１３の搬送面上で重なり合うことなく平面上に分散させる。 The belt conveyor device 14 is a device generally used when conveying bulk goods, and in the present embodiment, it is provided with an adjusting mechanism capable of adjusting the feeder speed of the belt feeder 12 and the belt speed of the conveyor belt 13, respectively. There is. As a result, the feeder speed is adjusted to be lower than the belt speed of the conveyor belt 13, and the ground material 100 sprinkled from the hopper 11 via the belt feeder 12 is placed on a plane without overlapping on the conveying surface of the conveyor belt 13. Disperse.
また、３Ｄラインレーザーカメラ１５は、図３で示すように、レーザー線状光Ｌを照射可能なレーザー投光部１５１とカメラレンズ１５２を備えた、光切断法に対応したカメラを採用している。そして、ベルトコンベヤ装置１４の搬送部におけるコンベヤベルト１３の搬送面上に設定された撮像対象領域に、レーザー線状光Ｌをコンベヤベルト１３の移動方向と直交するように照射し、撮像対象領域を移動する地盤材料１００を、この移動に同期してカメラレンズ１５２にて撮像する。 Further, as shown in FIG. 3, the 3D line laser camera 15 employs a camera compatible with the optical cutting method, which includes a laser projecting unit 151 capable of irradiating the laser linear light L and a camera lens 152. .. Then, the laser linear light L is irradiated to the imaging target area set on the transportation surface of the conveyor belt 13 in the transportation section of the belt conveyor device 14 so as to be orthogonal to the moving direction of the conveyor belt 13, and the imaging target area is irradiated. The moving ground material 100 is imaged by the camera lens 152 in synchronization with this movement.
こうして、地盤材料１００をコンベヤベルト１３の幅方向に切断した際の断面形状の外形を示すプロファイルデータＰを多数取得することにより、地盤材料１００の三次元表面形状データを得ることができ、また、プロファイルデータＰを画像処理することにより、地盤材料１００の二次元断面形状を得ることができる。これらプロファイルデータＰ、およびプロファイルデータＰからなる三次元表面形状データは、図２で示す管理制御装置４０に送信され画像処理される。 In this way, three-dimensional surface shape data of the ground material 100 can be obtained by obtaining a large number of profile data P indicating the outer shape of the cross-sectional shape when the ground material 100 is cut in the width direction of the conveyor belt 13, and By image-processing the profile data P, the two-dimensional cross-sectional shape of the ground material 100 can be obtained. The profile data P and the three-dimensional surface shape data including the profile data P are transmitted to the management control device 40 shown in FIG. 2 and subjected to image processing.
なお、３Ｄラインレーザーカメラ１５の撮像対象領域は、図４で示すように、ベルトコンベヤ装置１４とは独立して設置した暗室１６の内方に位置しており、３Ｄラインレーザーカメラ１５は、暗室１６に設置されている。そして、暗室１６はベルトコンベヤ装置１４と接触しないよう構築されて、ベルトコンベヤ装置１４の振動が３Ｄラインレーザーカメラ１５に伝達することを防止している。 As shown in FIG. 4, the imaging target area of the 3D line laser camera 15 is located inside a dark room 16 installed independently of the belt conveyor device 14, and the 3D line laser camera 15 is a dark room. It is installed in 16. The dark room 16 is constructed so as not to contact the belt conveyor device 14 to prevent the vibration of the belt conveyor device 14 from being transmitted to the 3D line laser camera 15.
（ｓｔｅｐ３）
粒度監視設備１０にて取得した地盤材料１００の三次元表面形状データを用いて、管理制御装置４０の粒度分布算出部４４にて、ベルトコンベヤ装置１４により連続的に搬送される地盤材料１００の１分ごとの粒度分布（重量比）を算定する。
(Step3)
Using the three-dimensional surface shape data of the ground material 100 acquired by the particle size monitoring facility 10, the particle size distribution calculation unit 44 of the management control device 40 uses the 1 of the ground material 100 continuously conveyed by the belt conveyor device 14. Calculate the particle size distribution (weight ratio) for each minute.
<管理制御装置４０の粒度分布算出部４４>
三次元表面形状データは、図２で示すように、管理制御装置４０の入力装置４２を介して記憶装置に格納されるとともに、粒度分布算出部４４にて後述する算定方法により粒度分布（重量比）が算出され、算出された粒度分布（重量比）は、管理制御装置４０の出力装置４３に出力されるとともに、記憶装置に格納される。
<Particle size distribution calculation unit 44 of management control device 40>
As shown in FIG. 2, the three-dimensional surface shape data is stored in the storage device via the input device 42 of the management control device 40, and the particle size distribution calculation unit 44 calculates the particle size distribution (weight ratio) by a calculation method described later. ) Is calculated, and the calculated particle size distribution (weight ratio) is output to the output device 43 of the management control device 40 and stored in the storage device.
以下に、地盤材料１００を５段階（０〜Ａ１ｍｍ、Ａ１ｍｍ〜Ａ２ｍｍ、Ａ２ｍｍ〜Ａ３ｍｍ、Ａ３ｍｍ〜Ａ４ｍｍ、Ａ４ｍｍ〜）に分級する場合を事例とし、地盤材料１００の粒度分布（重量比）の算定方法を詳述する。なお、本実施の形態では、図３で示すように、撮像対象領域を１秒間の間に通過した地盤材料１００を一つの地盤材料群１１０とし、１秒ごとに作成される地盤材料群１１０各々の三次元表面形状データを取得する作業を連続して行なっている。 In the following, the case where the ground material 100 is classified into 5 stages (0 to A1 mm, A1 mm to A2 mm, A2 mm to A3 mm, A3 mm to A4 mm, A4 mm ...) is used as an example, and the particle size distribution (weight ratio) of the ground material 100 is calculated. Will be described in detail. In the present embodiment, as shown in FIG. 3, the ground material 100 that has passed through the imaging target area for one second is regarded as one ground material group 110, and each ground material group 110 created every one second. The work of acquiring the three-dimensional surface shape data of is continuously performed.
まず、三次元表面形状データから地盤材料群１１０の全体積を計測する。ここで、地盤材料群１１０の全体積とは、地盤材料群１１０のコンベヤベルトの移動方向の長さ（本実施の形態では、図３で示すように１秒間の間に移動する長さ）範囲における、コンベヤベルト１３の搬送面よりなる下端面と、プロファイルデータＰよりなる上端面とで囲まれた領域の全体積である。 First, the total volume of the ground material group 110 is measured from the three-dimensional surface shape data. Here, the total volume of the ground material group 110 means the length of the ground material group 110 in the moving direction of the conveyor belt (in the present embodiment, the length that moves in one second as shown in FIG. 3) range. Is the total volume of the area surrounded by the lower end surface of the conveyor belt 13 and the upper end surface of the profile data P.
次に、図５の地盤材料群１１０における三次元表面形状データの断面図で示すような、コンベヤベルト１３の搬送面から４つの最適閾値（Ｌ１〜Ｌ４）各々に相当する高さまでの体積を計測し、全体積に対する比をそれぞれ加積通過率（画像体積比）として算出する。ここで、４つの最適閾値（Ｌ１〜Ｌ４）は、後述するキャリブレーションにて、骨材のふるい分け試験に用いる目開きの異なる複数のふるい各々に対応する数値となるよう、あらかじめ設定しておく。 Next, as shown in the cross-sectional view of the three-dimensional surface shape data in the ground material group 110 in FIG. 5, the volume from the transport surface of the conveyor belt 13 to the height corresponding to each of the four optimum threshold values (L1 to L4) is measured. Then, the ratio with respect to the total volume is calculated as the added product passage rate (image volume ratio). Here, the four optimum thresholds (L1 to L4) are set in advance so that they will be numerical values corresponding to a plurality of sieves with different openings used in the sieving test of the aggregate in the calibration described later.
つまり、４つの最適閾値（Ｌ１〜Ｌ４）各々で算出した加積通過率（画像体積比）がそれぞれ、ふるい分け試験にて地盤材料群１１０をふるい分けした際に、Ａ１ｍｍふるい、Ａ２ｍｍふるい、Ａ３ｍｍふるいおよびＡ４ｍｍふるいの加積通過率（重量比）と同一もしくは近似する数値となるよう、４つの最適閾値（Ｌ１〜Ｌ４）を設定する。 That is, when the added material passing rate (image volume ratio) calculated by each of the four optimum thresholds (L1 to L4) is respectively sieved by the sieving test, the ground material group 110 is sieved by A1 mm sieve, A2 mm sieve, A3 mm sieve and The four optimum thresholds (L1 to L4) are set so that the numerical values are the same as or close to the product passing rate (weight ratio) of the A4 mm sieve.
これにより、ふるい分け試験を行う場合に採用する上記のふるい各々のふるい目を横軸に対数目盛りで、また、上記のふるいに対応させた４つの最適閾値（Ｌ１〜Ｌ４）各々で得た加積通過率（画像体積比）を各ふるいの加積通過率（重量比）に見立てて縦軸に算術目盛りでとったグラフ上に描かれる粒度分布曲線（画像体積比）を、地盤材料群１１０の粒度分布曲線（重量比）として推定し、これに基づき粒度分布（重量比）を算出する。 As a result, the product of each of the above-mentioned sieves used in the sieving test is obtained on a logarithmic scale on the horizontal axis, and the product obtained at each of the four optimum thresholds (L1 to L4) corresponding to the above-mentioned sieves. The particle size distribution curve (image volume ratio) drawn on the graph with arithmetic scale on the vertical axis for the passage rate (image volume ratio) as the added product passage rate (weight ratio) of each sieve The particle size distribution curve (weight ratio) is estimated, and the particle size distribution (weight ratio) is calculated based on this.
上述する三次元表面形状データを取得する作業と粒度分布（重量比）を算出する作業を、１秒間ごとに形成される地盤材料群１１０各々に対して連続して実施することで、ベルトコンベヤ装置１４の搬送部を通過する地盤材料１００の粒度分布（重量比）を、連続的かつリアルタイムで手間を要することなく作成することが可能となる。 By continuously performing the above-described work of acquiring the three-dimensional surface shape data and work of calculating the particle size distribution (weight ratio) for each ground material group 110 formed every one second, a belt conveyor device It becomes possible to create the particle size distribution (weight ratio) of the ground material 100 passing through the 14 transport sections continuously and in real time without any trouble.
本実施の形態では、１秒間ごとに形成される地盤材料群１１０から算出された粒度分布（重量比）を１分間蓄積して、ベルトコンベヤ装置１４にて１分ごとに搬送される地盤材料１００の粒度分布（重量比）を算出する。この作業を連続して行い、５分間経過したところで図６で示すように、５分間分の粒度分布（重量比）から粒度分布（重量比）の１分平均Ｂ１を算出する。 In the present embodiment, the particle size distribution (weight ratio) calculated from the ground material group 110 formed every one second is accumulated for one minute, and the ground material 100 conveyed by the belt conveyor device 14 every one minute. The particle size distribution (weight ratio) of is calculated. This operation is continuously performed, and after 5 minutes have elapsed, as shown in FIG. 6, the 1-minute average B1 of the particle size distribution (weight ratio) is calculated from the particle size distribution (weight ratio) for 5 minutes.
そして、５分が経過した以降は、１分経過するごとに最古の地盤材料群１１０から算出した１分間の粒度分布（重量比）を削除し、最新の地盤材料群１１０から算出した１分間の粒度分布（重量比）を追加して、１分ごとに粒度分布（重量比）の５分間移動平均（Ｂ２、Ｂ３・・）を連続して算出する。これら１分ごとに算出される粒度分布（重量比）の５分間移動平均を、地盤材料１００に添加するセメント量を調整する際に用いる粒度分布（重量比）に設定し、管理制御装置４０の出力装置４３に出力するとともに、記憶装置に格納する。 Then, after 5 minutes have passed, the 1 minute particle size distribution (weight ratio) calculated from the oldest ground material group 110 is deleted every 1 minute, and the 1 minute calculated from the latest ground material group 110 is deleted. The particle size distribution (weight ratio) is added and the 5-minute moving average (B2, B3...) Of the particle size distribution (weight ratio) is continuously calculated every 1 minute. The 5-minute moving average of the particle size distribution (weight ratio) calculated for each minute is set to the particle size distribution (weight ratio) used when adjusting the amount of cement to be added to the ground material 100, and the management controller 40 The data is output to the output device 43 and stored in the storage device.
なお、地盤材料１００の粒度分布（重量比）を算出するにあたっては、前述したように、あらかじめ骨材のふるい分け試験に用いる目開きの異なる複数のふるい各々に対応する最適閾値（Ｌ１〜Ｌ４）を設定するためのキャリブレーションを実施する。以下に、キャリブレーションの手順を説明する。 When calculating the particle size distribution (weight ratio) of the ground material 100, as described above, the optimum threshold values (L1 to L4) corresponding to each of the plurality of sieves with different openings used in the sieving test of the aggregate are previously set. Perform calibration to set. The calibration procedure will be described below.
<キャリブレーション：第１の工程>
まず、粒度監視設備１０のホッパ１１からベルトフィーダ１２を介してコンベヤベルト１３に地盤材料１００を撒き出し、図７（ａ）で示すように、３Ｄラインレーザーカメラ１５の撮像対象領域をＮ分間の間に通過した地盤材料１００を地盤材料試料群１２０とし、この地盤材料試料群１２０の三次元表面形状データを取得する。なお、地盤材料試料群１２０は、土の粒度試験を実施するにあたり、試験１回あたりに必要な試料の目安としてＪＩＳＡ１２０１に規定されている最小分取量を満たしていればよく、通過時間は必ずしも１分間に限定されるものではない。
<Calibration: First step>
First, the ground material 100 is sprinkled from the hopper 11 of the particle size monitoring equipment 10 to the conveyor belt 13 via the belt feeder 12, and as shown in FIG. 7A, the imaging target area of the 3D line laser camera 15 for N minutes. The ground material 100 passing between them is set as a ground material sample group 120, and three-dimensional surface shape data of this ground material sample group 120 is acquired. The ground material sample group 120 only needs to meet the minimum preparative amount stipulated in JIS A1201 as a guideline of the sample required for one test when performing the soil particle size test, and the passage time is not always required. It is not limited to 1 minute.
<キャリブレーション：第２の工程>
次に、第１の工程で取得した三次元表面形状データから管理制御装置４０の粒度分布算出部４４にて、地盤材料試料群１２０の全体積を計測するとともに、コンベヤベルト１３の搬送面から規定高さまでの地盤材料試料群１２０の体積を計測する。この時、図７（ｂ）に破線で示すように、規定高さを０．５ｍｍごとに設定し、搬送面から各規定高さまでの体積を計測して、全体積に対する規定高さごとの体積の比を加積通過率（画像体積比）として算出する。
<Calibration: Second step>
Next, from the three-dimensional surface shape data acquired in the first step, the particle size distribution calculating unit 44 of the management control device 40 measures the total volume of the ground material sample group 120 and defines it from the conveying surface of the conveyor belt 13. The volume of the ground material sample group 120 up to the height is measured. At this time, as shown by the broken line in FIG. 7B, the specified height is set every 0.5 mm, the volume from the transport surface to each specified height is measured, and the volume for each specified height with respect to the total volume is set. Is calculated as the addition product passage ratio (image volume ratio).
<キャリブレーション：第３の工程>
第１および第２の工程を実施する一方で、地盤材料試料群１２０に対して湿潤法によるふるい分け試験を実施し、粒度分布曲線（重量比）を作成する。
<Calibration: Third step>
While carrying out the first and second steps, a sieving test by the wetting method is carried out on the ground material sample group 120 to create a particle size distribution curve (weight ratio).
<キャリブレーション：第４の工程>
第３の工程で用いた目開きの異なる複数のふるいごとで、加積通過率（重量比）と、第２の工程で算出した０．５ｍｍごとに高さを変えた規定高さ各々の加積通過率（画像体積比）とを比較する。そして、各ふるいの加積通過率（重量比）と加積通過率（画像体積比）が同一、もしくは近似するときの加積通過率（画像体積比）の規定高さを選定し、選定した規定高さ各々を複数のふるいごとに対応した最適閾値（Ｌ１〜Ｌ４）として設定する。
<Calibration: Fourth step>
For each of the plurality of sieves having different openings used in the third step, the product passing rate (weight ratio) and the addition of each of the specified heights changed in every 0.5 mm calculated in the second step. The product passage ratio (image volume ratio) is compared. Then, the specified height of the cumulative passing rate (image volume ratio) when the cumulative passing rate (weight ratio) and the cumulative passing rate (image volume ratio) of each sieve are the same or approximate to each other is selected and selected. Each specified height is set as an optimum threshold value (L1 to L4) corresponding to each of the plurality of sieves.
なお、上述する地盤材料１００から三次元表面形状データを取得し、三次元表面形状データを画像解析することにより粒度分布曲線（重量比）を推定する方法および装置の詳細は、特願２０１６−７８１５号と同様である。 The details of the method and apparatus for acquiring the three-dimensional surface shape data from the above-mentioned ground material 100 and estimating the particle size distribution curve (weight ratio) by image-analyzing the three-dimensional surface shape data are described in Japanese Patent Application No. 2016-7815. It is similar to the issue.
（ｓｔｅｐ４）
次に、１分ごとに算出される粒度分布（重量比）の５分間移動平均が算定された地盤材料１００を、図２で示すように、粒度監視設備１０のベルトコンベヤ装置１４を介して含水率監視設備２０に供給し、連続して搬送される地盤材料１００の１分ごとの含水率を計測する。
(Step4)
Next, as shown in FIG. 2, the ground material 100 for which a moving average of 5 minutes of the particle size distribution (weight ratio) calculated for each minute has been calculated is hydrated via the belt conveyor device 14 of the particle size monitoring facility 10. The water content of the ground material 100 supplied to the rate monitoring facility 20 and continuously conveyed is measured every minute.
<含水率監視設備２０>
図２で示すように、含水率監視設備２０は、ホッパ２１、ホッパ２１に設置された密度水分計２２およびベルトコンベヤ装置２３を備える。ベルトコンベヤ装置２３は、粒度監視装置１０に備えられているベルトコンベヤ装置１４と同様の装置であり、粒度監視設備１０から供給されホッパ２１を介して投下された地盤材料１００を混合設備３０に搬送する。
<Water content monitoring equipment 20>
As shown in FIG. 2, the water content monitoring facility 20 includes a hopper 21, a density moisture meter 22 installed in the hopper 21, and a belt conveyor device 23. The belt conveyor device 23 is a device similar to the belt conveyor device 14 included in the particle size monitoring device 10, and conveys the ground material 100 supplied from the particle size monitoring device 10 and dropped through the hopper 21 to the mixing device 30. To do.
ホッパ２１に設置された密度水分計２２は、図２及び図８で示すように、ホッパ２１の排出口近傍における対向する外周面各々に１体ずつ、平面視で互いに向かい合うことのないよう位置をずらして配置されている。密度水分計２２は、地盤材料１００の含水率を計測できる機器であればいずれを用いてもよいが、本実施の形態では、ＲＩから放出される放射線の一種である中性子線と測定対象物との相互作用を利用するＲＩ計の中でも、線源棒２２１と検出器２２２が内蔵された散乱型ＲＩ計を採用している。 As shown in FIG. 2 and FIG. 8, the density moisture meter 22 installed in the hopper 21 should be positioned so that it does not face each other in plan view, one on each of the facing outer peripheral surfaces near the outlet of the hopper 21. They are arranged in a staggered manner. The density moisture meter 22 may be any device as long as it can measure the water content of the ground material 100, but in the present embodiment, a neutron beam, which is a type of radiation emitted from RI, and an object to be measured. Among the RI meters utilizing the interaction of the above, a scatter type RI meter having a built-in radiation source rod 221 and a detector 222 is adopted.
図８で示すように、線源棒２２１から放射された中性子は、周りの水分子中の水素原子核と衝突して減速、散乱を繰り返すが、この衝突により生じた熱中性子は、土中の水分が多ければ生成率が大きくなり、少ないと小さくなる。一方、線源棒２２１から放射されたγ線は、地盤材料中を透過する間に土粒子と衝突して減速、散乱を繰り返すことから、密度が高いと減衰率が大きくなり、密度が小さいと小さくなる。これにより、衝突により生じた熱中性子を検出器２２２にて計測すると、熱中性子が通過したホッパ２１内の地盤材料１００における含水量（ｋｇ/ｍ3）が求まる。さらに、検出器２２２に戻ってきたγ線の測定値と、あらかじめ設定された校正係数および補正係数に基づいて、乾燥密度（ｋｇ/ｍ3）と含水率（％）を出力する。 As shown in FIG. 8, neutrons radiated from the source rod 221 collide with hydrogen nuclei in surrounding water molecules to decelerate and scatter repeatedly. Thermal neutrons generated by this collision are due to moisture in soil. If it is large, the generation rate becomes large, and if it is small, it becomes small. On the other hand, the γ-ray emitted from the radiation source rod 221 collides with soil particles while passing through the ground material, and decelerates and scatters repeatedly. Therefore, if the density is high, the attenuation rate becomes large, and if the density is small, Get smaller. As a result, when the thermal neutrons generated by the collision are measured by the detector 222, the water content (kg/m 3 ) in the ground material 100 in the hopper 21 through which the thermal neutrons have passed can be obtained. Further, the dry density (kg/m 3 ) and the water content (%) are output based on the measurement value of the γ-ray returned to the detector 222 and the preset calibration coefficient and correction coefficient.
（ｓｔｅｐ５）
ホッパ２１の排出口近傍に備えた２体の密度水分計２２各々にて１分ごとの含水率を計測し、管理制御装置４０の含水率監視部４５にて、地盤材料１００の調整含水率を算定する。なお、密度水分計２２にて計測される含水率は、１分間連続して計測した含水率の平均を算定してもよいし、１分おきに計測した含水率を採用してもよい。
(Step5)
The water content of each minute is measured by each of the two density moisture meters 22 provided near the discharge port of the hopper 21, and the adjusted water content of the ground material 100 is measured by the water content monitoring unit 45 of the management control device 40. Calculate. The water content measured by the density moisture meter 22 may be calculated by averaging the water content continuously measured for 1 minute, or the water content measured every 1 minute may be adopted.
<管理制御装置４０の含水率監視部４５>
上述する２体の密度水分計２２各々にて出力された含水率は、管理制御装置４０の入力装置４２を介して記憶装置に格納されるとともに、含水率監視部４５にて両者の平均値として１分ごとの調整含水率が算出される。この作業を連続して行ない、５分間経過したところで、５分間分の調整含水率から１分平均を算出する。
<Water content monitoring unit 45 of management control device 40>
The water content output by each of the two density moisture meters 22 described above is stored in the storage device via the input device 42 of the management control device 40, and the water content monitoring unit 45 determines the average value of the both. The adjusted water content is calculated every minute. This operation is continuously performed, and after 5 minutes have passed, a 1-minute average is calculated from the adjusted water content for 5 minutes.
そして、５分が経過した以降は、１分経過するごとに最古の１分の調整含水率を削除するとともに最新の１分の調整含水率を追加して、調整含水率の５分間移動平均を１分ごとに連続して算出する。これら１分ごとに算出されるを調整含水率の５分間移動平均を、地盤材料１００に添加する加水量を調整する際に用いる含水率に設定し、管理制御装置４０の出力装置４３に出力するとともに、記憶装置に格納する。 Then, after 5 minutes have passed, the oldest adjusted water content of 1 minute is deleted every 1 minute and the latest adjusted water content of 1 minute is added, and the moving average of the adjusted water content of 5 minutes is added. Is continuously calculated every 1 minute. The 5-minute moving average of the adjusted water content calculated for each minute is set to the water content used when adjusting the amount of water added to the ground material 100, and is output to the output device 43 of the management control device 40. It is also stored in the storage device.
なお、密度水分計２２の数量は必ずしも２つに限定されるものではなく、排出口近傍の４体の面各々に設置してもよいし、いずれかの面に１体のみ密度水分計２２を設置してもよい。密度水分計２２が１体のみの場合は、複数の密度水分計２２の平均値を算出した調整含水率ではなく、密度水分計２２にて計測された含水率を移動平均に用いればよい。 Note that the number of the density moisture meters 22 is not necessarily limited to two, and may be installed on each of the surfaces of the four bodies near the outlet, or only one body may have the density moisture meters 22 on either surface. May be installed. When the density moisture meter 22 is only one body, the water content measured by the density moisture meter 22 may be used for the moving average instead of the adjusted water content calculated by calculating the average value of the plurality of density moisture meters 22.
また、密度水分計２２の取り付け位置は、ホッパ２１の外周面のいずれの位置に取り付けてもよいが、図８で示すように平面視で中央付近に設置すると、隅部近傍に設置する場合と比較して熱中性子およびγ線がホッパ２１内の地盤材料１００に対して広い範囲で散乱するため、より精度よく含水量（ｋｇ/ｍ３）、乾燥密度（ｋｇ/ｍ３）および含水率（％）を測定することができる。 Further, the density moisture meter 22 may be installed at any position on the outer peripheral surface of the hopper 21, but when it is installed near the center in plan view as shown in FIG. In comparison, thermal neutrons and γ rays are scattered over a wide range on the ground material 100 in the hopper 21, so that the water content (kg/m3), dry density (kg/m3) and water content (%) can be more accurately measured. Can be measured.
（ｓｔｅｐ６）
このように、地盤材料１００に添加する加水量の見直しに用いる１分ごとに算出される調整含水率の５分間移動平均が算出された地盤材料１００を、図２で示すように、含水率監視設備２０のベルトコンベヤ装置２３を介して混合設備３０に供給する。
(Step6)
In this way, as shown in FIG. 2, the ground material 100 for which the 5-minute moving average of the adjusted water content calculated every 1 minute used for reviewing the amount of water added to the ground material 100 is calculated is monitored as shown in FIG. It is supplied to the mixing equipment 30 via the belt conveyor device 23 of the equipment 20.
<混合設備３０>
図２で示すように、混合設備３０は、ベルトコンベア装置３１、ベルトコンベア装置３１に備えた重量計３２、バケットエレベータ３３、セメントサイロ３４、水槽３５、ホッパー３６及びミキサ３７を備える。ベルトコンベヤ装置３１は、粒度監視装置１０に備えられているベルトコンベヤ装置１４と同様の装置であり、含水率監視設備２０から投下された地盤材料１００をホッパー３６を介してミキサ３７に搬送する。また、バケットエレベータ３３は、ベルトコンベヤ装置３１に投下された地盤材料１００に対して、セメントサイロ３４に貯留されているセメントを供給する装置であり、水槽３５に貯留されている水は、ホッパー３６を介して地盤材料１００とともに、ミキサ３７に供給される。
<Mixing equipment 30>
As shown in FIG. 2, the mixing facility 30 includes a belt conveyor device 31, a weight scale 32 provided in the belt conveyor device 31, a bucket elevator 33, a cement silo 34, a water tank 35, a hopper 36, and a mixer 37. The belt conveyor device 31 is a device similar to the belt conveyor device 14 provided in the particle size monitoring device 10, and conveys the ground material 100 dropped from the water content monitoring facility 20 to the mixer 37 via the hopper 36. The bucket elevator 33 is a device that supplies the cement stored in the cement silo 34 to the ground material 100 dropped on the belt conveyor device 31, and the water stored in the water tank 35 is stored in the hopper 36. It is supplied to the mixer 37 together with the ground material 100 via.
なお、上述する混合設備３０は、ＣＳＧダムの現場や河川の堤防、砂防、舗装等を構築するための現場にて一般に使用されているものと同様の設備を備えている。また、ミキサ３７は地盤材料１００とセメント及び水を混練できる装置であればいずれを用いてもよいが、例えば組み立て解体が容易なＢＨＳミキサ（連続練ミキサー）を採用すると、混合設備３０のコンパクト化を図ることが可能となる。 The above-mentioned mixing equipment 30 is equipped with equipment similar to those generally used at the CSG dam site or the site for constructing river embankments, erosion control, pavement and the like. The mixer 37 may be any device as long as it can knead the ground material 100 with cement and water. For example, if a BHS mixer (continuous kneading mixer) that is easy to assemble and dismantle is adopted, the mixing equipment 30 can be made compact. Can be achieved.
また、ベルトコンベヤ装置３１には、時間当たりの搬送重量（ｋｇ/ｍｉｎ）を算出するための重量計３２を設置している。重量計３２は、ベルトコンベヤ装置に装着する重量計として一般に知られているコンベヤスケールを採用しており、図示しないロードセルにて荷重要素（ｋｇ/ｍ）を検出する一方で、図示しないパルス発振器にて、ベルト速度（ｍ/ｍｉｎ）を検出することで、単位時間当たりの搬送重量（ｋｇ/ｍｉｎ）を算出する。この搬送重量（ｋｇ/ｍｉｎ）を、地盤材料１００に添加するセメント量および加水量を調整する際に用いるべく、管理制御装置４０の出力装置４３に出力するとともに、記憶装置に格納する。 Further, the belt conveyor device 31 is provided with a weight scale 32 for calculating the transport weight per hour (kg/min). The weighing scale 32 employs a conveyor scale generally known as a weighing scale to be mounted on a belt conveyor device, and detects a load element (kg/m) with a load cell (not shown), while using a pulse oscillator (not shown). By detecting the belt speed (m/min), the transport weight (kg/min) per unit time is calculated. The transport weight (kg/min) is output to the output device 43 of the management control device 40 and stored in the storage device so as to be used when adjusting the amount of cement and the amount of water added to the ground material 100.
（ｓｔｅｐ７）
管理制御装置４０のセメント量調整部４６及び加水量調整部４７にて、連続して搬送される地盤材料１００に対して１分ごとに調整するセメントおよび水の添加量を算出する。そして、管理制御装置４０の自動制御部４８にてセメントサイロ３４および水槽３５を管理制御し、調整したセメント量および加水量を地盤材料１００に添加する。
(Step7)
The cement amount adjusting unit 46 and the water addition amount adjusting unit 47 of the management control device 40 calculate the added amount of cement and water to be adjusted for each minute with respect to the ground material 100 that is continuously conveyed. Then, the cement silo 34 and the water tank 35 are managed and controlled by the automatic control unit 48 of the management control device 40, and the adjusted cement amount and water amount are added to the ground material 100.
<セメント量調整部４６〉
セメント量調整部４６は、ｓｔｅｐ３にて１分ごとに算出される粒度分布（重量比）の５分間移動平均とｓｔｅｐ６にて算出される１分ごとの搬送重量に基づいて添加すべきセメント量の調整値を算出する。つまり、１分ごとに算出される粒度分布（重量比）の５分間移動平均に基づいて地盤材料１００に添加すべき単位セメント量を調整し、この単位セメント量と１分間の間に搬送される地盤材料１００の搬送重量から１分間のセメント量を算出し、出力装置４３に出力するとともに、記憶装置に格納する。これを１分ごとに連続して行なう。
<Cement amount adjusting unit 46>
The cement amount adjusting unit 46 determines the amount of cement to be added based on the 5-minute moving average of the particle size distribution (weight ratio) calculated every minute in step 3 and the transported weight every minute calculated in step 6. Calculate the adjustment value. That is, the unit cement amount to be added to the ground material 100 is adjusted based on the 5-minute moving average of the particle size distribution (weight ratio) calculated for each minute, and the unit cement amount is conveyed between this unit cement amount and 1 minute. The cement amount for one minute is calculated from the transported weight of the ground material 100, and is output to the output device 43 and stored in the storage device. This is continuously performed every 1 minute.
<加水量調整部４７〉
加水量調整部４７は、ｓｔｅｐ５にて１分ごとに算出される調整含水率の５分間移動平均とｓｔｅｐ６にて算出される１分ごとの搬送重量に基づいて添加すべき加水量の調整値を算出する。つまり、１分ごとに算出される調整含水率の５分間移動平均に基づいて地盤材料１００に添加すべき単位水量を調整し、この単位水量と１分間の間に搬送される地盤材料１００の搬送重量から１分間の加水量を算出し、出力装置４３に出力するとともに、記憶装置に格納する。これを１分ごとに連続して行なう。
<Water amount adjusting unit 47>
The water content adjustment unit 47 calculates the adjustment value of the water content to be added based on the 5-minute moving average of the adjusted water content calculated every minute in step 5 and the transported weight per minute calculated in step 6. calculate. That is, the unit amount of water to be added to the ground material 100 is adjusted based on the 5-minute moving average of the adjusted water content calculated for each minute, and the conveyance of the ground material 100 which is conveyed between this unit water amount and the one minute is carried out. The amount of water added for one minute is calculated from the weight and is output to the output device 43 and stored in the storage device. This is continuously performed every 1 minute.
なお、上記の方法にて調整した単位セメント量および単位水量が、室内実験および試験施工にてあらかじめ設定した規定の単位セメント量および単位水量と比較して大きく変動している場合には、セメント系混合材料の製造システム１の稼働を停止し、各設備の点検や地盤材料１００の目視確認を行うとよい。 In addition, when the unit cement amount and unit water amount adjusted by the above method are significantly different from the prescribed unit cement amount and unit water amount set in advance in laboratory experiments and test construction, the cement type It is advisable to stop the operation of the mixed material manufacturing system 1 and perform an inspection of each facility and a visual confirmation of the ground material 100.
<自動制御部４８〉
自動制御部４８は、セメントサイロ３４およびバケットエレベータ３３と通信接続されてその作動を自動制御可能に構成されており、セメント量調整部４６にて算出される１分ごとのセメント量に基づいて、バケットエレベータ３３を介してセメントサイロ３４から地盤材料１００に供給するセメント量を管理制御する。同様に、水槽３５とも通信接続されてその作動を自動制御可能に構成されており、加水量調整部４７にて算出される１分ごとの加水量に基づいて、ミキサ３７に排出する加水量を管理制御する。
<Automatic control unit 48>
The automatic control unit 48 is configured to be communicatively connected to the cement silo 34 and the bucket elevator 33 so that its operation can be automatically controlled, and based on the cement amount for each minute calculated by the cement amount adjusting unit 46, The amount of cement supplied from the cement silo 34 to the ground material 100 via the bucket elevator 33 is managed and controlled. Similarly, the water tank 35 is also communicatively connected to the water tank 35 so that its operation can be automatically controlled, and the amount of water to be discharged to the mixer 37 can be determined based on the amount of water added for each minute calculated by the water amount adjustment unit 47. Manage control.
なお、自動制御部４８は、先にも述べたように粒度監視設備１０、含水率監視設備２０、混合設備３０各々と通信接続されているから、これらの稼働および停止等の動作を自動制御可能に構成したものとしてもよい。 Since the automatic control unit 48 is communicatively connected to each of the particle size monitoring equipment 10, the water content monitoring equipment 20, and the mixing equipment 30 as described above, it is possible to automatically control the operation such as operation and stop of these. It may be configured as.
（ｓｔｅｐ８及びｓｔｅｐ９）
こうして、地盤材料１００に対して１分ごとに見直しされた添加量のセメントと水とがベルトコンベヤ装置３１を通過した地盤材料１００の搬送重量に応じて添加され、これらがミキサ３７内で効率的に攪拌・混合されることで均質なセメント系混合材料１３０が製造される。これらｓｔｅｐ1からｓｔｅｐ８までの手順を粒度監視設備１０に供給される地盤材料１００がなくなるまで繰り返す。
(Step8 and step9)
In this way, the added amount of cement and water reviewed every minute is added to the ground material 100 according to the transport weight of the ground material 100 that has passed through the belt conveyor device 31, and these are efficiently added in the mixer 37. The homogeneous cement-based mixed material 130 is manufactured by stirring and mixing. The procedure from step 1 to step 8 is repeated until there is no ground material 100 to be supplied to the particle size monitoring equipment 10.
なお、本実施の形態では、セメント量の見直しを図るために用いられる地盤材料１００の粒度分布（重量比）および調整含水率に、１分ごとに算出される５分間移動平均を採用している。このため、少なくともセメント系混合材料の製造システム１の稼働開始から５分間は、粒度分布（重量比）および調整含水率の移動平均が算定されない。よって、当初の５分間は、管理制御装置４０の記憶装置にあらかじめ格納されている、室内配合試験および試験施工にて規定した単位セメント量および単位水量に基づいて地盤材料１００にセメントおよび水を添加し、ミキサ３７内で効率的に攪拌・混合してセメント系混合材料１３０を製造する。 In the present embodiment, a 5-minute moving average calculated every 1 minute is adopted as the particle size distribution (weight ratio) and adjusted water content of the ground material 100 used for reviewing the amount of cement. .. Therefore, the moving average of the particle size distribution (weight ratio) and the adjusted water content is not calculated for at least 5 minutes after the operation of the cement-based mixed material manufacturing system 1 is started. Therefore, during the initial 5 minutes, cement and water are added to the ground material 100 based on the unit cement amount and the unit water amount, which are stored in advance in the storage device of the management control device 40 and are defined in the indoor mixing test and the test construction. Then, the cement-based mixed material 130 is manufactured by efficiently stirring and mixing in the mixer 37.
上述するセメント系混合材料の製造システム１、およびこれを利用したセメント系混合材料１３０の製造方法によれば、１分ごとで粒度分布（重量比）の５分間移動平均および調整含水率の５分間移動平均を算出し、これに基づいて単位セメント量および単位水量を調整する。そして、これらと１分ごとに算出される地盤材料の１００の搬送重量に基づいて、１分ごとに地盤材料１００に見合うセメント及び水の添加量を算出する。これにより、１分ごとに調整したセメント量および加水量を地盤材料１０に添加することで、連続して供給される地盤材料１００に粒度のバラツキおよび含水率のバラツキがある場合であっても、均一で高品質なセメント系混合材料を製造することが可能となる。 According to the above-described cement-based mixed material manufacturing system 1 and the method for manufacturing the cement-based mixed material 130 using the same, the moving average of the particle size distribution (weight ratio) and the adjusted water content of 5 minutes are calculated every 1 minute. The moving average is calculated, and the unit cement amount and the unit water amount are adjusted based on this. Then, based on these and the transported weight of 100 of the ground material calculated every minute, the addition amount of cement and water commensurate with the ground material 100 is calculated every one minute. Accordingly, by adding the cement amount and the water amount adjusted for each minute to the ground material 10, even when the ground material 100 continuously supplied has a variation in particle size and a variation in water content, It is possible to manufacture a uniform and high quality cement-based mixed material.
また、１分ごとの粒度分布（重量比）の５分間移動平均が、連続的に搬送される地盤材料１００の全量をリアルタイムに撮像した三次元表面形状データから算出されるため、地盤材料の粒度分布（重量比）に高い信頼性を確保することが可能となる。 In addition, the 5-minute moving average of the particle size distribution (weight ratio) for each minute is calculated from the three-dimensional surface shape data obtained by capturing the entire amount of the ground material 100 that is continuously conveyed in real time. It becomes possible to secure high reliability in distribution (weight ratio).
さらに、図１０の５分間移動平均の概念図で示すように、地盤材料１００の粒度分布（重量比）および調整含水率に移動平均を採用すると、１分ごとに算出した粒度分布（重量比）および調整含水率に不規則な変動があっても均されることとなる。よって、高い精度にて単位セメント量および単位水量を調整できる。 Further, as shown in the conceptual diagram of the 5-minute moving average of FIG. 10, if the moving average is adopted for the particle size distribution (weight ratio) and the adjusted water content of the ground material 100, the particle size distribution (weight ratio) calculated for each minute (weight ratio) And even if the adjusted water content changes irregularly, it will be averaged. Therefore, the unit amount of cement and the unit amount of water can be adjusted with high accuracy.
加えて、セメント系混合材料の製造システム１は、端末装置４０の自動制御部４８にて、地盤材料１００を粒度監視設備１０のホッパ１１に供給した後、セメント系混合材料１３０を製造するまでの一連の作業が自動制御可能であるため、システム全体のコンパクト化を図ることができ、法面吹付機械のように設置・撤去が１日で可能となる。これにより、ＣＳＧダムや盛土だけでなく、砂防や舗装工事など、セメント系混合材料を利用するあらゆる工事現場にて転用することが可能となる。 In addition, in the cement-based mixed material manufacturing system 1, the automatic control unit 48 of the terminal device 40 supplies the ground material 100 to the hopper 11 of the particle size monitoring facility 10 until the cement-based mixed material 130 is manufactured. Since a series of operations can be automatically controlled, the entire system can be made compact, and installation and removal can be done in a day like a slope spraying machine. As a result, not only CSG dams and embankments, but also various construction sites that use cement-based mixed materials, such as erosion control and paving work, can be diverted.
さらに、一般的に図１１の粒度の違う土砂による含水比及び圧縮強度の関係概念図で示すように、地盤材料１００が細粒材料の場合、粗粒材料に比べて同じセメント添加量であればセメント改良材の強度は細粒材料のほうが低いことが知られている。従来、地盤材料１００の粒度によってセメント添加量は変えない一定の添加量によって品質（強度）を確保していた。これは品質上の安全を見込んで細粒材料に合わせてセメント添加量を定めていた。セメント系混合材料の製造システム１を使用することにより粗粒材料の場合には添加するセメント量を少なくすることも可能となり、より省エネルギーで経済的な施工が可能となる。 Further, generally, as shown in the conceptual diagram of the relationship between the water content ratio and the compressive strength of soils having different particle sizes in FIG. 11, when the ground material 100 is a fine-grained material, if the cement addition amount is the same as that of the coarse-grained material, It is known that the strength of cement improvers is lower in fine-grained materials. Conventionally, the quality (strength) is secured by a fixed addition amount that does not change the cement addition amount depending on the particle size of the ground material 100. In consideration of quality safety, the amount of cement added was determined according to the fine-grained material. By using the cement-based mixed material manufacturing system 1, it is possible to reduce the amount of cement to be added in the case of a coarse-grained material, which enables more energy-saving and economical construction.
なお、本発明のセメント系混合材料の製造システム１およびセメント系混合材料１３０の製造方法は、上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で、種々の変更が可能であることはいうまでもない。 The manufacturing system 1 for the cement-based mixed material and the manufacturing method for the cement-based mixed material 130 of the present invention are not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. Needless to say.
例えば、本実施形態では、１分ごとで粒度分布（重量比）および調整含水率の５分間移動平均を算出したが、必ずしもこれに限定されるものではなく、移動平均の時間間隔は、５分より長くてもよいし短くてもよい。また、地盤材料１００に添加するセメント量および加水量を１分ごとに調整算出したが、必ずしも１分に限定されるものではない。 For example, in the present embodiment, the 5-minute moving average of the particle size distribution (weight ratio) and the adjusted water content is calculated every one minute, but the present invention is not limited to this, and the moving average time interval is 5 minutes. It may be longer or shorter. Further, the amount of cement and the amount of water added to the ground material 100 are adjusted and calculated every one minute, but the amount is not necessarily limited to one minute.
また、地盤材料１００に対してセメントおよび水ともに調整した添加量にてセメント系混合材料１３０の製造をしたが、必ずしもこれに限定されるものではない。例えば、水のみに調整した添加量を採用し、セメントは調整した添加量を用いずに管理制御装置４０の記憶装置にあらかじめ格納した規定の単位セメント量を採用する等してもよい。 Further, the cement-based mixed material 130 was manufactured with the added amounts of both cement and water adjusted with respect to the ground material 100, but it is not necessarily limited to this. For example, the adjusted addition amount may be adopted only for water, and the prescribed unit cement amount stored in advance in the storage device of the management control device 40 may be adopted for the cement without using the adjusted addition amount.
さらに、重量計３２を混合設備３０に設置したが、混合設備３０のベルトコンベヤ装置３１と含水率監視設備２０のベルトコンベヤ装置２３でベルト速度が同一であれば、含水率監視設備２０のベルトコンベヤ装置２３に重量計２４を設置し、これにより単位時間当たりの搬送重量を測定してもよい。 Further, although the weight scale 32 is installed in the mixing equipment 30, if the belt speeds of the belt conveyor device 31 of the mixing equipment 30 and the belt conveyor device 23 of the water content monitoring equipment 20 are the same, the belt conveyor of the water content monitoring equipment 20. A weighing scale 24 may be installed in the device 23 to measure the transport weight per unit time.
加えて、本実施の形態では、３Ｄラインレーザーカメラ１５の撮像対象領域を１秒間の間に通過した地盤材料１００を一つの地盤材料群１１０とし、１秒ごとに作成される地盤材料群１１０各々の三次元表面形状データを取得したが、必ずしもこれに限定されるものではない。ベルトコンベヤ装置１４のベルト速度や作業条件等に応じて、地盤材料１００が撮像対象領域を通過する通過時間を適宜規定し、この規定時間の間に通過した地盤材料１００を一つの地盤材料群１１０とすればよい。 In addition, in the present embodiment, the ground material 100 that has passed through the imaging target area of the 3D line laser camera 15 for one second is regarded as one ground material group 110, and each ground material group 110 created every one second. Although the three-dimensional surface shape data of is acquired, it is not necessarily limited to this. Depending on the belt speed of the belt conveyor device 14, working conditions, etc., the passing time for the ground material 100 to pass through the imaging target area is appropriately specified, and the ground material 100 that has passed during this specified time is set as one ground material group 110. And it is sufficient.
また、地盤材料１００を５つに分級したが、分級する粒径および分級の数量等はこれに限定されるものではなく、いずれの粒径に分級するものであってもよい。 Further, the ground material 100 was classified into five, but the particle size to be classified, the number of classifications, and the like are not limited to this, and any particle size may be used.
さらに、粒度分布（重量比）を算定する際に、ふるい各々に対応する最適閾値（Ｌ１〜Ｌ４）は、ｓｔｅｐ３にて説明した手順にて設定してもよいが、これに限定されるものではない、例えば、より最適閾値の精度を向上させるべく、ｓｔｅｐ３にて詳述したキャリブレーションの第１の工程から第４の工程を実施する作業を複数回繰り返して地盤材料１００からサンプリングする地盤材料試料群１２０の数量を増やし、複数の地盤材料試料群１２０から最適閾値を設定してもよい。 Furthermore, when calculating the particle size distribution (weight ratio), the optimum threshold values (L1 to L4) corresponding to each sieve may be set by the procedure described in step 3, but the present invention is not limited to this. No, for example, a ground material sample for sampling from the ground material 100 by repeating the work of carrying out the first to fourth steps of the calibration described in detail in Step 3 a plurality of times in order to further improve the accuracy of the optimum threshold value. The number of groups 120 may be increased and an optimum threshold value may be set from a plurality of ground material sample groups 120.
具体的には、上記のキャリブレーションの第１の工程から第４の工程を実施する作業をＭ回繰り返すことで、地盤材料１００から新たな地盤材料試料群１２０をＭ個だけ収集し、地盤材料試料群１２０ごとに算出した最適閾値からヒストグラムを作成する。そして、ふるいごとに作成した最適閾値のヒストグラム各々から、最頻値および中央値の両者を算出したうえで、中央値に近い最頻値を採用し、これを最適閾値（Ｌ１〜Ｌ４）としてもよい。 Specifically, by repeating the operation of carrying out the first to fourth steps of the above calibration M times, M new ground material sample groups 120 are collected from the ground material 100, and the ground material sample group 120 is collected. A histogram is created from the optimum threshold value calculated for each sample group 120. Then, after calculating both the mode value and the median value from each histogram of the optimum threshold values created for each sieve, the mode value close to the median value is adopted, and this is also used as the optimum threshold values (L1 to L4). Good.
１ セメント系混合材料の製造システム
１０ 粒度監視設備
１１ ホッパ
１２ ベルトフィーダ
１３ コンベヤベルト
１４ ベルトコンベヤ装置
１５ ３Ｄラインレーザーカメラ
１５１ レーザー投光部
１５２ カメラレンズ
１６ 暗室
２０ 含水率監視設備
２１ ホッパ
２２ 密度水分計
２２１ 線源棒
２２２ 検出器
２３ ベルトコンベヤ装置
２４ 重量計
３０ 混合設備
３１ ベルトコンベヤ装置
３２ 重量計
３３ バケットエレベータ
３４ セメントサイロ
３５ 水槽
３６ ホッパ
３７ ミキサ
４０ 管理制御装置
４１ 情報処理装置
４２ 入力装置
４３ 出力装置
４４ 粒度分布算出部
４５ 含水率監視部
４６ セメント量調整部
４７ 加水量調整部
４８ 自動制御部
１００ 地盤材料
１１０ 地盤材料群
１２０ 地盤材料試料群
１３０ セメント系混合材料
1 Cement-based mixed material manufacturing system 10 Particle size monitoring equipment 11 Hopper 12 Belt feeder 13 Conveyor belt 14 Belt conveyor device 15 3D line laser camera 151 Laser projecting part 152 Camera lens 16 Dark room 20 Water content monitoring equipment 21 Hopper 22 Density moisture meter 221 Source bar 222 Detector 23 Belt conveyor device 24 Weight scale 30 Mixing equipment 31 Belt conveyor device 32 Weight scale 33 Bucket elevator 34 Cement silo 35 Water tank 36 Hopper 37 Mixer 40 Management control device 41 Information processing device 42 Input device 43 Output device 44 Particle Size Distribution Calculation Unit 45 Moisture Content Monitoring Unit 46 Cement Amount Adjustment Unit 47 Water Addition Adjustment Unit 48 Automatic Control Unit
100 ground material 110 ground material group 120 ground material sample group 130 cement-based mixed material
Claims (5)
該粒度監視設備の前記ベルトコンベヤ装置から前記地盤材料が連続的に投下される、密度水分計が設置されたホッパを備え、該ホッパに投下された前記地盤材料の含水率を計測する含水率監視設備と、
該含水率監視設備から前記地盤材料が連続的に投下される、重量計が設置されたベルトコンベヤ装置を備え、該ベルトコンベヤ装置に投下された前記地盤材料の単位時間当たりの搬送重量を測定するとともに、前記地盤材料にセメント及び水を添加して混練し、セメント系構造材料を製造する混合設備と、
前記三次元表面形状データに基づいて前記地盤材料の粒度分布（重量比）を算出する粒度分布算出部、前記粒度分布（重量比）と前記搬送重量に基づいて調整した前記セメントの添加量を算出するセメント量調整部、および前記含水率と前記搬送重量に基づいて調整した前記水の添加量を算出する加水量調整部、を備える管理制御装置と、を有することを特徴とするセメント系混合材料の製造システム。 A particle size monitoring equipment including a belt conveyor device and a 3D line laser camera, for acquiring three-dimensional surface shape data of the ground material continuously sprinkled on the conveyor belt of the belt conveyor device ,
A water content monitor for measuring the water content of the ground material dropped on the hopper, which comprises a hopper provided with a density moisture meter in which the ground material is continuously dropped from the belt conveyor device of the particle size monitoring equipment. Equipment and
A belt conveyor device, in which a weight scale is installed, is continuously dropped from the water content monitoring facility, and a transport weight per unit time of the ground material dropped on the belt conveyor device is measured. Along with, a mixing facility for adding cement and water to the ground material and kneading the mixture to produce a cement-based structural material,
A particle size distribution calculating unit that calculates a particle size distribution (weight ratio) of the ground material based on the three-dimensional surface shape data, and calculates an amount of the cement added adjusted based on the particle size distribution (weight ratio) and the transport weight. A cement-based mixed material, comprising: a cement amount adjusting unit, and a water content adjusting unit that calculates the added amount of the water adjusted based on the water content and the transport weight. Manufacturing system.
前記密度水分計が、前記ホッパの排出口近傍であって平面視で互い向かい合うことのない位置に対をなして配置されていることを特徴とするセメント系混合材料の製造システム。 The manufacturing system of the cement-based mixed material according to claim 1,
The cement-based mixed material manufacturing system , wherein the density moisture meters are arranged in pairs near the discharge port of the hopper so as not to face each other in a plan view .
連続して搬送される前記地盤材料の前記粒度分布（重量比）、前記含水率および前記搬送重量を所定時間の経過ごとに算出し、前記粒度分布（重量比）に基づいて単位セメント量を調整し、この単位セメント量と前記搬送重量に基づいて調整した前記セメントの添加量を算出するとともに、前記含水率に基づいて単位水量を調整し、この単位水量と前記搬送重量に基づいて調整した前記水の添加量を算出し、
前記地盤材料にセメント及び水を添加して混練する際に、前記所定時間の経過ごとに前記セメントおよび水のうち少なくともいずれか一方を、あらかじめ規定した量に代えて調整した添加量にて搬送されてきた前記地盤材料に添加することを特徴とするセメント系混合材料の製造方法。 A method for producing a cement-based mixed material using the system for producing a cement-based mixed material according to claim 1 or 2,
The particle size distribution (weight ratio), the water content, and the transferred weight of the ground material that are continuously conveyed are calculated for each predetermined time, and the unit cement amount is adjusted based on the particle size distribution (weight ratio). Then, while calculating the addition amount of the cement adjusted based on the unit cement amount and the transport weight, the unit water amount is adjusted based on the water content, and the unit water amount and the transport weight adjusted based on Calculate the amount of water added,
At the time of kneading by adding cement and water to the ground material, at least one of the cement and water is conveyed at an adjusted addition amount in place of a pre-specified amount at each elapse of the predetermined time. A method for producing a cement-based mixed material, which comprises adding to the ground material.
前記含水率が、前記地盤材料の複数地点で計測した含水率を平均して算出された調整含水率であることを特徴とするセメント系混合材料の製造方法。 The method for producing a cement-based mixed material according to claim 3,
The method for producing a cementitious mixed material, wherein the water content is an adjusted water content calculated by averaging the water content measured at a plurality of points of the ground material.
所定時間の経過ごとに算出される前記粒度分布（重量比）および前記含水率が、あらかじめ規定した時間間隔内の平均値を前記所定時間の経過ごとに連続して算出する移動平均によるものであることを特徴とするセメント系混合材料の製造方法。 The method for producing a cementitious mixed material according to claim 3 or 4,
The particle size distribution (weight ratio) and the water content calculated for each elapse of a predetermined time are based on a moving average in which an average value within a predetermined time interval is continuously calculated for each elapse of the predetermined time. A method for producing a cement-based mixed material, comprising:
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| US8233667B2 (en) * | 2004-09-07 | 2012-07-31 | Petro-Model Ehf | Apparatus and method for analysis of size, form and angularity and for compositional analysis of mineral and rock particles |
| JP4883799B2 (en) * | 2007-07-31 | 2012-02-22 | 鹿島建設株式会社 | Ground material particle size measurement system and program |
| JP6173894B2 (en) * | 2013-11-30 | 2017-08-02 | 鹿島建設株式会社 | Surface water volume management method and system for ground material |
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