CN103896521B - A kind of preparation method of canal seepage control water delivery tank - Google Patents
A kind of preparation method of canal seepage control water delivery tank Download PDFInfo
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Abstract
一种渠道防渗输水水槽的制备方法，本发明涉及一种用于农田水利输水U（矩）型水槽的制备方法，它要解决现有制备方法得到的U形槽和梯形槽表面粗糙，抗冻、耐久性差的问题。制备方法：一、配制原料；二、原料经搅拌机搅拌均匀后浇筑到模具中，防渗输水水槽模具置于悬浮式振动台上振动，完成混凝土原料的布料振动成型；三、载有混凝土水槽的模具运送至养护窑中，完成蒸汽养护后传送出养护窑；四、防渗输水水槽模具进行脱模处理，完成渠道防渗输水水槽的制备。本发明采用振动台对模具中的混凝土原料进行整体振动处理，使产品的质量均匀、表面光滑、结构力学性能好，混凝土参数达到C50F300级。
A method for preparing a channel anti-seepage water delivery tank. The invention relates to a method for preparing a U (rectangular) water tank for farmland water conservancy water delivery. , The problem of frost resistance and poor durability. Preparation method: 1. Preparation of raw materials; 2. The raw materials are stirred evenly by a mixer and then poured into the mold. The anti-seepage water delivery tank mold is placed on a suspended vibrating table to vibrate to complete the cloth vibration molding of the concrete raw materials; 3. Concrete tanks are loaded The mold is transported to the curing kiln, and after steam curing is completed, it is sent out of the curing kiln; 4. The mold of the anti-seepage water delivery tank is demoulded to complete the preparation of the channel anti-seepage water delivery tank. The present invention uses a vibrating table to carry out overall vibration treatment on the concrete raw materials in the mold, so that the quality of the product is uniform, the surface is smooth, the structural mechanical properties are good, and the concrete parameters reach the C50F300 grade.
Description
技术领域technical field
本发明涉及一种用于农田水利输水U（矩）型水槽的制备方法。The invention relates to a preparation method of a U (rectangular) water tank used for farmland water conservancy water delivery.
背景技术Background technique
我国以占世界6%的淡水资源、9%的耕地，解决了占世界21%人口的吃饭问题，农田水利发挥了至关重要的作用。With 6% of the world's fresh water resources and 9% of the arable land, China has solved the problem of feeding 21% of the world's population, and farmland water conservancy has played a vital role.
近年来，中央坚持把农田水利建设作为保障农业稳定发展和国家粮食安全的重要基础，不断完善政策支持体系，加大各项工作力度，推动农田水利进入新的发展阶段。2012年启动东北四省区“节水增粮行动”，但支渠以下到田间这“最后一公里”却是农田水利最薄弱的环节，普遍存在标准低、配套差、老化失修、效益衰减等问题，农田灌排“最后一公里”问题日益突出。In recent years, the central government has insisted on taking the construction of farmland water conservancy as an important basis for ensuring the stable development of agriculture and national food security, continuously improving the policy support system, and intensifying various efforts to promote farmland water conservancy into a new stage of development. In 2012, the "Water Conservation and Grain Increase Action" was launched in the four northeastern provinces and regions, but the "last mile" from the branch canal to the field is the weakest link in farmland water conservancy, and there are common problems such as low standards, poor supporting facilities, aging and disrepair, and declining benefits. , the problem of the "last mile" of farmland irrigation and drainage has become increasingly prominent.
农田水利输水的衬砌渠道主要有U形槽和梯形槽，现有的U形槽和梯形槽两侧壁和底部尺寸等厚，材料浪费，成本高，单块长度只有500mm，并且断面占地面积大。现有生产工艺一般采用干硬性混凝土振动或压制成型，现有水槽模具分内膜外膜立式安放，内膜底板处加装振动器，整体置于压力机下，生产时边填筑干硬性混凝土边振动，填筑到一定高度后，用压力机挤压，然后拆开模具外膜，将制品移出模具并送至养护区养护，该生产工艺自动化水平和效率低。同时由于制品采用干硬性混凝土，受点振动源和填筑时间影响，制品各处所受激振力和时间不同，容易引起局部区域混凝土过振、欠振，制品密度不均匀，表面粗糙，抗冻、耐久性差，质量堪忧且性能差。The lining channels for farmland water conservancy and water transportation mainly include U-shaped grooves and trapezoidal grooves. The existing U-shaped grooves and trapezoidal grooves have the same thickness on both sides and bottom, which wastes materials and high costs. The length of a single block is only 500mm, and the section occupies an area large area. The existing production process generally uses dry hard concrete to vibrate or press. The existing water tank mold is divided into inner and outer membranes and placed vertically. A vibrator is installed at the bottom of the inner membrane. Concrete is vibrated while being filled to a certain height, then squeezed with a press, and then the outer film of the mold is disassembled, and the product is removed from the mold and sent to the curing area for curing. This production process has a low level of automation and efficiency. At the same time, because the product is made of dry hard concrete, affected by the point vibration source and the filling time, the exciting force and time of the product are different everywhere, which is easy to cause over-vibration and under-vibration of the concrete in some areas, uneven density of the product, rough surface, and high resistance. Cold, poor durability, worrying quality and poor performance.
发明内容Contents of the invention
本发明的目的是为了解决现有制备方法得到的U形槽和梯形槽表面粗糙，抗冻、耐久性差的问题，而提供一种U(矩)型渠道防渗输水水槽的制备方法。The purpose of the present invention is to provide a kind of preparation method of U (rectangular) type canal anti-seepage water delivery tank in order to solve the U-shaped groove and trapezoidal groove that the existing preparation method obtains rough surface, frost resistance, poor durability.
本发明渠道防渗输水水槽的制备方法按以下步骤实现：The preparation method of the channel anti-seepage water delivery tank of the present invention is realized according to the following steps:
一、称取390～420kg的水泥、70～80kg的粉煤灰、25～30kg的矿粉、178～198kg的水、600～720kg的中砂、677～718kg规格为1-2的碎石、400～450kg规格为0.5的碎石、5～8kg的钢纤维和9.5～10.5kg的外加剂作为原料；1. Weigh 390-420kg of cement, 70-80kg of fly ash, 25-30kg of mineral powder, 178-198kg of water, 600-720kg of medium sand, 677-718kg of gravel with specifications 1-2, 400-450kg of crushed stone with a specification of 0.5, 5-8kg of steel fiber and 9.5-10.5kg of admixture are used as raw materials;
二、将称取的原料加入到搅拌机，搅拌均匀后通过供料车转送至布料机中，防渗输水水槽模具置于振动台上，通过布料机上的导料槽将原料浇筑到防渗输水水槽模具中，同时振动台带动防渗输水水槽模具以1000～1500Hz的频率振动2～3min,完成混凝土原料的布料振动成型；2. Add the weighed raw materials to the mixer, stir them evenly, and then transfer them to the distribution machine through the feeding truck. In the water tank mould, at the same time, the vibrating table drives the anti-seepage water delivery tank mold to vibrate at a frequency of 1000-1500 Hz for 2-3 minutes to complete the cloth vibration molding of concrete raw materials;
三、将载有振动成型混凝土水槽的防渗输水水槽模具运送至养护窑中，首先在室温下静停1.8～2.2h，然后通过蒸汽通道，以13～16℃/h的升温速率升温至60～68℃，保持2.5h后再以13～18℃/h的降温速率降温至室温，载有养护成型混凝土的防渗输水水槽模具传送出养护窑；3. Transport the mold of the anti-seepage water delivery tank carrying the vibration-formed concrete tank to the curing kiln, first stop at room temperature for 1.8-2.2 hours, and then heat up to 13-16°C/h through the steam channel 60-68°C, keep it for 2.5 hours, then cool down to room temperature at a cooling rate of 13-18°C/h, and the anti-seepage water delivery tank mold loaded with cured concrete is sent out of the curing kiln;
四、对传送出养护窑的载有养护成型混凝土的防渗输水水槽模具进行脱模处理，完成渠道防渗输水水槽的制备。4. Perform demoulding treatment on the anti-seepage water delivery tank mold loaded with curing shaped concrete sent out of the curing kiln to complete the preparation of the channel anti-seepage water delivery tank.
本发明采用悬浮式振动台对模具中的混凝土原料进行整体振动处理，用以混凝土物料的排气、密实及成型，振动台为悬浮式振动台，振动效率能最大作用在输水水槽制品上，使渠道防渗输水水槽产品的质量均匀、密实、表面光滑、结构力学性能好，抗压强度达到50MPa以上，混凝土参数达到C50F300级，制备过程中可以根据产品的尺寸大小，调控振动频率和时间。避免了现有工艺因局部振动引发的振动不均现象的发生，使制备得到的2000mm长U(矩)水槽耐久性和抗冻性得到很大提高。The present invention adopts the suspended vibrating table to carry out overall vibrating treatment on the concrete raw materials in the mould, which is used for exhausting, compacting and forming of the concrete materials. The quality of the channel anti-seepage water delivery tank is uniform, compact, smooth surface, good structural mechanical properties, the compressive strength reaches more than 50MPa, the concrete parameters reach C50F300 grade, and the vibration frequency and time can be adjusted according to the size of the product during the preparation process . The occurrence of uneven vibration caused by local vibration in the existing process is avoided, and the durability and frost resistance of the prepared 2000mm long U (moment) water tank are greatly improved.
附图说明Description of drawings
图1为本发明步骤四制备得到的渠道防渗输水水槽的整体结构示意图；Fig. 1 is the overall structural representation of the canal anti-seepage water delivery tank prepared in step 4 of the present invention;
图2为本发明步骤四制备得到的渠道防渗输水水槽的端面示意图。Fig. 2 is a schematic diagram of the end face of the anti-seepage water delivery tank of the channel prepared in Step 4 of the present invention.
具体实施方式detailed description
具体实施方式一：本实施方式渠道防渗输水水槽的制备方法按以下步骤实施：Specific implementation mode one: the preparation method of the anti-seepage water delivery tank of the channel in this implementation mode is implemented according to the following steps:
一、称取390～420kg的水泥、70～80kg的粉煤灰、25～30kg的矿粉、178～198kg的水、600～720kg的中砂、677～718kg规格为1-2的碎石、400～450kg规格为0.5的碎石、5～8kg的钢纤维和9.5～10.5kg的外加剂作为原料；1. Weigh 390-420kg of cement, 70-80kg of fly ash, 25-30kg of mineral powder, 178-198kg of water, 600-720kg of medium sand, 677-718kg of gravel with specifications 1-2, 400-450kg of crushed stone with a specification of 0.5, 5-8kg of steel fiber and 9.5-10.5kg of admixture are used as raw materials;
二、将称取的原料加入到搅拌机，搅拌均匀后通过供料车转送至布料机中，防渗输水水槽模具置于振动台上，通过布料机上的导料槽将原料浇筑到防渗输水水槽模具中，同时振动台带动防渗输水水槽模具以1000～1500Hz的频率振动2～3min,完成混凝土原料的布料振动成型；2. Add the weighed raw materials to the mixer, stir them evenly, and then transfer them to the distribution machine through the feeding truck. In the water tank mould, at the same time, the vibrating table drives the anti-seepage water delivery tank mold to vibrate at a frequency of 1000-1500 Hz for 2-3 minutes to complete the cloth vibration molding of concrete raw materials;
三、将载有振动成型混凝土水槽的防渗输水水槽模具运送至养护窑中，首先在室温下静停1.8～2.2h，然后通过蒸汽通道，以13～16℃/h的升温速率升温至60～68℃，保持2.5h后再以13～18℃/h的降温速率降温至室温，载有养护成型混凝土的防渗输水水槽模具传送出养护窑；3. Transport the mold of the anti-seepage water delivery tank carrying the vibration-formed concrete tank to the curing kiln, first stop at room temperature for 1.8-2.2 hours, and then heat up to 13-16°C/h through the steam channel 60-68°C, keep it for 2.5 hours, then cool down to room temperature at a cooling rate of 13-18°C/h, and the anti-seepage water delivery tank mold loaded with cured concrete is sent out of the curing kiln;
四、对传送出养护窑的载有养护成型混凝土的防渗输水水槽模具进行脱模处理，完成渠道防渗输水水槽的制备。4. Perform demoulding treatment on the anti-seepage water delivery tank mold loaded with curing shaped concrete sent out of the curing kiln to complete the preparation of the channel anti-seepage water delivery tank.
本实施方式渠道防渗输水水槽的生产工艺中所述的室温为20℃。The room temperature described in the production process of the canal anti-seepage water delivery tank in this embodiment is 20°C.
本实施方式渠道防渗输水水槽的生产工艺主要由配料搅拌系统、布料振动系统、养护系统、脱模回模系统和电控系统组成，其中养护通道内采用蒸汽养护，养护通道分为四个区域，即在静停区中静停处理，在升温区采用蒸汽加热，在恒温区保持升温结束时的温度恒定，最后在降温区中降至室温。同时养护通道内配有监测系统，能自动控制养护通道内温度和湿度，由于钢模的特殊结构设计，混凝土水槽制品在规定的时间内通过温度变化的养护通道时，能保证模具能够充分与蒸汽接触，优化了养护效果，以保证能够达到要求的脱模强度。The production process of the channel anti-seepage water delivery tank in this embodiment is mainly composed of a batching mixing system, a material distribution vibration system, a maintenance system, a demoulding and returning system, and an electric control system. The maintenance channel uses steam curing, and the maintenance channel is divided into four. Zone, that is, stop processing in the static stop zone, use steam heating in the heating zone, keep the temperature constant at the end of heating in the constant temperature zone, and finally drop to room temperature in the cooling zone. At the same time, the curing channel is equipped with a monitoring system, which can automatically control the temperature and humidity in the curing channel. Due to the special structural design of the steel mold, when the concrete water tank products pass through the temperature-changing curing channel within the specified time, it can ensure that the mold can fully contact with the steam. contact, the curing effect is optimized to ensure that the required release strength can be achieved.
具体实施方式二：本实施方式与具体实施方式一不同的是步骤一所述水泥的标号为425。其它步骤及参数与具体实施方式一相同。Specific embodiment two: the difference between this embodiment and specific embodiment one is that the label of the cement described in step one is 425. Other steps and parameters are the same as those in Embodiment 1.
具体实施方式三：本实施方式与具体实施方式一或二不同的是步骤一中所述的粉煤灰的级别为一级。其它步骤及参数与具体实施方式一或二相同。Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the grade of the fly ash described in step 1 is the first grade. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.
具体实施方式四：本实施方式与具体实施方式一至三之一不同的是步骤一中所述的钢纤维的长度为1～2cm。其它步骤及参数与具体实施方式一至三之一相同。Embodiment 4: This embodiment is different from Embodiment 1 to Embodiment 3 in that the length of the steel fiber described in step 1 is 1-2 cm. Other steps and parameters are the same as those in Embodiments 1 to 3.
具体实施方式五：本实施方式与具体实施方式一至四之一不同的是步骤一中所述的外加剂由减水剂、引气剂和调凝剂组成。其它步骤及参数与具体实施方式一至四之一相同。Embodiment 5: This embodiment differs from Embodiments 1 to 4 in that the admixture described in step 1 is composed of a water reducer, an air-entraining agent and a coagulation regulator. Other steps and parameters are the same as in one of the specific embodiments 1 to 4.
具体实施方式六：本实施方式与具体实施方式一至五之一不同的是步骤三以15℃/h的升温速率升温至65℃。其它步骤及参数与具体实施方式一至五之一相同。Embodiment 6: The difference between this embodiment and one of Embodiments 1 to 5 is that step 3 raises the temperature to 65° C. at a rate of 15° C./h. Other steps and parameters are the same as one of the specific embodiments 1 to 5.
具体实施方式七：本实施方式与具体实施方式一至六之一不同的是步骤三再以15℃/h的降温速率降温至室温。其它步骤及参数与具体实施方式一至六之一相同。Embodiment 7: This embodiment is different from Embodiment 1 to Embodiment 6 in that step 3 is to cool down to room temperature at a cooling rate of 15° C./h. Other steps and parameters are the same as one of the specific embodiments 1 to 6.
具体实施方式八：本实施方式与具体实施方式一不同的是步骤四得到的渠道防渗输水水槽由两侧壁1和槽底2连接成一体，两侧壁1的外沿1-2垂直于水平面，两侧壁的内沿1-1倾斜向下形成U形截面，U形截面的底部平行于水平面，在渠道防渗输水水槽两端的端面均设有U形止水橡胶槽3，且渠道防渗输水水槽的长度为2000mm。Embodiment 8: The difference between this embodiment and Embodiment 1 is that the channel anti-seepage water delivery tank obtained in step 4 is connected into one body by the two side walls 1 and the bottom 2 of the tank, and the outer edges 1-2 of the two side walls 1 are vertical On the horizontal plane, the inner edge 1-1 of the two side walls is inclined downward to form a U-shaped cross-section, the bottom of the U-shaped cross-section is parallel to the horizontal plane, and U-shaped water-stop rubber grooves 3 are provided on the end faces of the anti-seepage water delivery tanks of the channel. And the length of the channel anti-seepage water delivery tank is 2000mm.
本实施方式两侧壁的内沿1-1倾斜向下形成U形截面，其中侧壁的内沿1-1与铅垂方向的夹角α为2.3°。In this embodiment, the inner edges 1-1 of the two side walls are inclined downward to form a U-shaped section, wherein the angle α between the inner edges 1-1 of the side walls and the vertical direction is 2.3°.
实施例一：本实施例渠道防渗输水水槽的制备方法按以下步骤实现：Embodiment 1: The preparation method of the anti-seepage water delivery tank of the channel of this embodiment is realized according to the following steps:
一、称取420kg的425水泥、80kg的一级粉煤灰、30kg的矿粉、180kg的水、720kg的中砂、700kg规格为1-2的碎石、420kg规格为0.5的碎石、6kg的钢纤维和10kg的外加剂作为原料；1. Weigh 420kg of 425 cement, 80kg of primary fly ash, 30kg of mineral powder, 180kg of water, 720kg of medium sand, 700kg of crushed stone with a specification of 1-2, 420kg of crushed stone with a specification of 0.5, 6kg steel fiber and 10kg admixture as raw materials;
二、将称取的原料加入到立轴行星式搅拌机，搅拌均匀后通过供料车转送至布料机中，防渗输水水槽模具置于悬浮式振动台上，通过布料机上的导料槽将原料浇筑到防渗输水水槽模具中，同时振动台带动防渗输水水槽模具以1200Hz的频率振动2.5min,完成混凝土原料的布料振动成型；2. Put the weighed raw materials into the vertical shaft planetary mixer, and then transfer them to the distribution machine through the feeding truck after mixing evenly. Pour into the mold of the anti-seepage water delivery tank, and at the same time, the vibrating table drives the mold of the anti-seepage water delivery tank to vibrate at a frequency of 1200Hz for 2.5min to complete the vibration molding of the concrete raw materials;
三、将载有振动成型混凝土水槽的防渗输水水槽模具运送至养护窑中，首先在室温下静停2h，然后通过蒸汽通道，以15℃/h的升温速率升温至65℃，保持2.5h后再以15℃/h的降温速率降温至室温，载有养护成型混凝土的防渗输水水槽模具传送出养护窑；3. Transport the mold of the anti-seepage water delivery tank carrying the vibration-formed concrete tank to the curing kiln, firstly stop it at room temperature for 2 hours, and then raise the temperature to 65 °C at a heating rate of 15 °C/h through the steam channel, and keep it for 2.5 °C. After h, the temperature is lowered to room temperature at a cooling rate of 15°C/h, and the anti-seepage water delivery tank mold loaded with curing shaped concrete is sent out of the curing kiln;
四、对传送出养护窑的载有养护成型混凝土的防渗输水水槽模具进行气动脱模处理，完成渠道防渗输水水槽的制备。4. Pneumatic demoulding is performed on the anti-seepage water delivery tank mold loaded with cured shaped concrete sent out of the curing kiln to complete the preparation of the channel anti-seepage water delivery tank.
本实施例所选用的防渗输水水槽模具的尺寸为400*400*2000mm，模具的长度为2000mm，脱模得到的渠道防渗输水水槽经过质检、打包后运送成品区码垛存放，产品渠道防渗输水水槽的抗压强度达到50MPa以上，混凝土参数达到C50F300级（SL352-2006水工混凝土试验规程）。由于步骤二将防渗输水水槽模具置于悬浮式振动台上，使其整体振动，得到的混凝土防渗输水U(矩)型水槽表面平滑密实，没有因硬性混凝土局部振动压制成型产生的气泡空洞，提高了得到的防渗输水水槽的力学性能。The size of the anti-seepage water delivery tank mold used in this embodiment is 400*400*2000mm, and the length of the mold is 2000mm. The channel anti-seepage water delivery tank obtained by demoulding is inspected and packaged, and then transported to the finished product area for palletizing and storage. The anti-seepage water delivery tank of the product channel has a compressive strength of more than 50MPa, and the concrete parameters have reached the C50F300 level (SL352-2006 Hydraulic Concrete Test Regulations). Since step 2 puts the mold of the anti-seepage water delivery tank on the suspended vibrating table to make it vibrate as a whole, the surface of the obtained concrete anti-seepage water delivery U (moment) tank is smooth and dense, and there is no local vibration and compression molding of hard concrete. The air bubbles and cavities improve the mechanical properties of the obtained anti-seepage water delivery tank.
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| CN106045424A (en) * | 2016-05-25 | 2016-10-26 | 象州县科学技术局 | Method for producing prefabricated member of concrete ditch by using construction waste |
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