parentshiftbook Step 6 And Chapter 8: Eleven-Step Construction Method Of Hydraulic Biogas Pool, Step-By-Step Instruc
Step 6 And Chapter 8: Eleven-Step Construction Method Of Hydraulic Biogas Pool, Step-By-Step Instruc
Yan Changqing wrote the principles of hydraulic biogas digesters, the advantages and disadvantages of such a design, and the principles that should be followed during construction on three large blackboards behind him.
Then he paused for a moment, leaving a certain amount of time for everyone to think and understand, and was not in a hurry to continue teaching the specific construction methods of hydraulic biogas digesters.
Because in his opinion, compared to learning the specific construction methods of hydraulic biogas digesters, it is obviously more important to understand and master the principles, design reasons and design principles of hydraulic biogas digesters!!!
Because in the final analysis, the specific construction method of a hydraulic biogas digester is just an implementation method that follows the principles, design reasons and design principles of a hydraulic biogas digester.
As long as they understand and master the principles, design reasons and design principles of hydraulic biogas digesters, then even if Yan Changqing does not explain to them the specific construction methods of hydraulic biogas digesters.
If they think about it carefully and practice it several times, they can also figure out and deduce the specific construction method of the hydraulic biogas digester.
Although it is possible that the specific construction method of the hydraulic biogas digester that they figured out by themselves is not necessarily the same as the specific construction method of the hydraulic biogas digester that Yan Changqing knows and masters.
But even if the construction process is different, the function and function of the hydraulic biogas digester finally built should not be much different from the hydraulic biogas digester built by Yan Changqing.
Because both are hydraulic biogas pools built following the same principles, design reasons and design principles of hydraulic biogas pools.
But on the contrary, if they only learned the specific construction methods of hydraulic biogas pools, but did not understand and master the principles, design reasons and design principles of hydraulic biogas pools.
So even if they master the specific construction methods of hydraulic biogas digesters taught by Yan Changqing, all they can do is copy and paste in the exact same environment.
Once the environmental conditions are different from the current environmental conditions in another environment, or during the construction process of the hydraulic biogas digester, other unexpected problems arise that Yan Changqing has not mentioned.
If they do not understand and master the principles, design reasons and design principles of hydraulic biogas digesters, they do not have the ability to think independently and solve problems.
To give a more vivid example, it is like some ordinary programmers in Yan Changqing's previous life.
When the same program is moved from one production environment to another, many ordinary programmers require that the new production environment be exactly the same as the old production environment!
Because once the new production environment is different from the old production environment, resulting in the program not running in the new production environment, and abnormal error reporting occurs, then they will not be able to think independently and solve it.
In other words, their solution is to completely format the new production environment, and then build a production environment on the new production environment that is exactly the same as the old production environment!
But some programmers who understand and master the fundamental principles of the program don't care about the environment in which the program runs.
Because no matter what environment the program is running in and an error occurs, they can find the specific cause of the problem and solve it quickly!
This is the difference between "knowing it, but not knowing why it is" and "knowing it, but also knowing why it is"!!!
After everyone understood and mastered the principle, design reasons and design principles of the hydraulic biogas digester, Yan Changqing continued:
"The specific construction method of a hydraulic biogas digester, or the construction process, is roughly divided into the following eleven steps."
"Step one: prepare ingredients!"
"Building an 8 cubic meter biogas digester requires 1 ton of cement, 2 cubic meters of sand, 0.6 cubic meters of gravel (1 to 3 cm in size), 600 red bricks, and 1 to 2 ceramic pipes (20 to 30 cm in diameter) , steel bar (diameter 14 mm) 1.2 meters.
"If you build a 10 cubic meter biogas tank, the amount of cement, bricks, and sand will be increased by another ten percent. If you build a 6 cubic meter biogas tank, the amount of cement, bricks, and sand will be reduced by 100 percent compared to the 8 cubic meter biogas tank. out of ten.
"Of course, this is just a general value. In actual construction, there will be more or less unexpected losses. It depends on the actual situation.
"Step 2: Release the line!"
"The digging of the pit is the first step to ensure the quality of the pool construction, and it must be constructed according to the specified dimensions."
"Key points for laying out the line: 1. Draw out the overall plane."
"Second, mark out the area of the pig house, whether the pig house is on the east or west side."
"Third, draw out the hydraulic biogas digester model and width center line."
"Four, take O as the starting point, find the center point O of the pool on the inside of the pig house, take O as the center of the circle, draw a circle with the radius of the pool plus 6 cm as the radius, and determine the location of the pool.'
"Fifth, determine the location of the inlet and outlet. The center point of the inlet must be determined on the center line of the width of the 'hydraulic biogas digester mode' and marked with white ash.
"Step Three: Excavation of the Pool Pit!"
“In the ‘hydraulic biogas pool model’, all built-in biogas pools are buried underground, and the earthworks for the biogas pools adopt large-scale excavation construction techniques.”
"First of all, the height of plus and minus zero should be determined."
"The depth of the pit is determined according to the design drawing, that is, the top of the biogas pool and the outlet are kept on the same level, and are 10 cm higher than the floor of the pig house, and the feed outlet is 2 cm above the ground.
“If the biogas tank is dug too deep and the biogas tank is lower than the ground level, it will affect the use of supporting facilities. If the biogas tank is dug too shallow and the biogas tank protrudes from the ground, it will also cause difficulties in raising pigs and discharging fertilizers.”
"So in order to facilitate the placement of pool construction molds or use brick molds to pour the pool body and reduce material loss, the pool pit should be circular and vertical."
“When you encounter groundwater when building a pool, you can use the method of ‘avoidance, diversion and blocking’ to solve it. "
"The so-called 'avoidance' means avoiding underground water."
"Try not to construct in rainy seasons, and choose places with lower groundwater levels and higher terrain to build pools. In water network areas, you can build spherical pools or raise the pool body to build a semi-underground pool."
“The so-called ‘diversion’ means diverting groundwater away. "
"Dig drainage ditches before construction to divert water away as much as possible."
"If water seeps through the pool wall, you can insert a bamboo pipe into the seepage area or cut a star ("Y")-shaped ditch on the pool wall to allow the water to flow from the ditch to the bottom of the pool."
"For water seepage at the bottom of the pool, cross ditches or ring ditches can be used to collect water, and a small, deep well can be dug in the center of the pool bottom to allow the water to flow into the well and be drained away. It will be filled in after the project is completed and no seepage water has escaped. "
“The so-called ‘blocking’ means blocking groundwater. "
"Individual small springs in the pool can be plugged and blocked with bricks and small stones."
"The fourth step is to pour concrete!"
"Hydraulic biogas pools generally adopt a combined construction method. The so-called combined construction method means that the bottom of the tank, the tank wall, and the lower part of the hydraulic chamber are all made of concrete cast in place, and the pool arch cover and the upper part of the hydraulic chamber are made of bricks."
“The concrete pouring process must be carried out continuously, and the interruption time shall not exceed 1 hour. The concrete pouring process must be vibrated and compacted to prevent the occurrence of honeycomb pitting.
"The fifth step is to build the outlet channel!"
"The outlet channel is made of red bricks and sand ash. In order to facilitate construction and discharging materials, the channel opening is 50 cm wide, 70 cm high, and the top is arched."
"But the angle between the upper mouth and the upper arch of the pool should not be less than 35 centimeters to prevent gas from escaping under the water surface when the gas is produced for a long time."
"The sixth step is to pour the pool wall and hydraulic chamber!"
"The pouring of the pool wall and the lower part of the hydraulic room can use steel molds, wooden molds and brick molds. Generally, the above molds are the inner molds, and the pool wall is the outer mold.
"Due to the high cost of steel molds, they are rarely used, while wooden molds and brick molds are more commonly used."
“If there are multiple biogas digesters built in a village, it is more convenient to use wooden formwork. If only one is built, it is better to use brick formwork.”
"The general method of using brick formwork is to soak the bricks with water first to prevent difficulty in removing the formwork."
"Each brick is laid horizontally, and the joints of each layer of bricks are staggered. There is no need for mud or mortar openings. To lay one layer of bricks, pour concrete for one layer, vibrate and compact, and then build the second layer."
"The seventh step is the construction of the pool arch cover!"
In the 'hydraulic biogas digester model', the biogas digester arch cover is made of bricks, and straight pipe feeding is generally used. "
"Before building the pool arch cover, the feed pipe must be installed. Generally, a ceramic pipe with a diameter of 200 mm and a length of about 600 mm is used."
"The rope in the pipe is tied to the wooden stake on the ground. The bell mouth of the feed pipe faces upward, vertically up and down, and is fixed close to the pool wall. The appropriate arch angle is 250~300 mm when inserted into the pool."
"When building a masonry arch, the bricks can be fixed with iron hooks or lanyards. The bricks should be built first from the feed pipe, and the surroundings of the feed pipe should be reinforced with cement.'
"The bricks used to build the arch cover must be of good quality and soaked with water first to keep the outside damp and the inside inside."
"Use 1:2 cement sand and ash for masonry construction. The sand and ash should have good workability, the ash mouth should be full, and the bricks should be tight against each other."
"Every time you build a circle, use small stone chips to embed it firmly, and pay attention to the arc of the arch while building."
"Every time 3 to 5 rounds of masonry are built, the outer wall of the arch cover should be plastered tightly with 1:3 cement sand ash."
"When the upper layer of the first ring of bricks at the arch corner is plastered, the thickness should be 30 to 50 mm to replace the ring beam."
“As you build, plaster, and then backfill evenly from outside to inside.
"Before backfilling, several layers of bricks must be laid on the upper part of the feed pipe to prevent backfill soil from entering the pool through the feed pipe."
"The width of the feed opening is preferably 240 mm, and the length varies from household to household."
"Note that only about 60% of the soil should be backfilled for the first time to prevent landslides. The rest of the soil should be backfilled the next day before sealing the pool. The entire pool can be fully backfilled 10 days after completion.
"While building the pool arch cover, the upper part of the hydraulic chamber should be laid. The upper half of the hydraulic chamber should be built with 1/4 bricks and poured with 1:3 cement sand and ash."
"When the masonry pool arch cover is to be sealed, a copper air pipe with a diameter of 9 to 10 mm should be placed in the center of the vault. The insertion depth should be about 10 mm after the sealing layer in the pool is completed."
"In the center of the vault, four 500 to 700 mm long iron bars are placed in a # shape. The plastering must be thickened and reinforced to prevent the gas tank from being damaged due to excessive pressure during the operation of the biogas digester."
"Around the air duct, build a square enclosure wall with a depth of 200~300 mm and a side length of 180~200 mm, and leave a gap in the direction of the air duct."
"Under the floor of the pig house, a dark ditch can be built or an iron pipe or plastic protective pipe with an inner diameter of 20 to 50 mm can be placed to lead out the gas pipe."
"A movable cover is placed on the air pipe to prevent the air pipe from being chewed by pigs."
"The size of the movable cover is 240 mm × 240 mm, and the thickness is 50 to 60 mm. It can be replaced by 2 red bricks."
"."Step eight, construction on the bottom of the pool!"
"First lay a layer of gravel on the bottom of the pool, fill the gaps between the gravel with 1:4 cement mortar, and then use cement, sand, gravel and 1:3:3 concrete to pour the bottom of the pool. The thickness should reach 8~ 12 cm.
"Step nine, seal the inside of the biogas pool!"
“The biogas pool built by a combination of bricks and concrete cannot meet leakage prevention requirements only by relying on the structural layer. The pool body must be sealed to prevent air leakage and water leakage.
"The sealing layer of the biogas pool adopts 7-layer method and 3-layer method, and the gas storage chamber and the feed pipe in the tank adopt
7-layer approach; 3-layer approach is adopted for the pool bottom, pool wall, hydraulic chamber, outlet channel, etc.
“The 7-layer method is to use cement, sand, and mortar as the first layer, ash:water=0.3:1.
"The second layer of cement: sand = 1:2.5 cement sand ash, the thickness is 0.8~1 cm.'
"Apply 0.1 cm thick plain gray on the third layer."
"The fourth layer of cement: sand = 1:2 cement sand ash, thickness is 0.4 cm.
"Apply 0.1 cm thick plain gray on the fifth layer.
"For the sixth layer, use 1:1 fine sand plaster to plaster 0.3~0.4 cm."
"Brush the seventh layer with plain mortar 3 times."
"The 3-layer approach means that the 1st layer is done together with the 2nd layer in the 7-layer approach, the 2nd layer is done together with the 6th layer in the 7-layer approach, and the 3rd layer is done together with the 7th layer in the 7-layer approach.
Start doing it. ’
"Step ten, maintenance!"
"Every part poured with concrete must be cured. Exposed concrete should be covered with straw curtains and watered for curing. The curing time is 7-10 days. Pay attention to prevention in spring and autumn.
List. "
"In order to achieve the purpose of maintenance, after the biogas tank is sealed, the discharge port, feed port, and top port of the tank must be tightly covered with film."
“After the curing period is reached, the materials can be put into use after inspection and pressure test.’11
"If it rains 24 hours after the completion of the pool construction, water should be added to the pool in time. The amount of water added should be half of the filling volume in the pool to prevent the water level from rising and damaging the pool body.'
"Step 11, inspection and acceptance!"
"Tap with your fingers or a small wooden stick and there is no hollow sound; there are no traces of water seepage on the inner wall of the entire pool [no cracks, sand holes, pores and other visible defects], and there are no visible defects such as the gas pipeline outside the pool
Switches and other supporting facilities are installed completely and firmly.
"If there is water or air leakage during the inspection, the location and cause must be identified. After repairs are made to ensure that the strength reaches the required level, the materials can be put into use only after passing the re-inspection."
“The above is the eleven-step construction method of hydraulic biogas digester!!!”
Yan Changqing put down the fifth piece of chalk and wrote until only a small piece of it was left on his fingertips. It was difficult to hold on to the chalk he was writing on. He turned his head to look at everyone and said lightly.
No matter whether they are the princes Zhu Biao, Zhu Zhen, Zhu Gang, Zhu Di and other princes, they are also the Duke of Xin Tang He and the imperial physician Wang Lu.
Or it could be the governor of Haizhou City, the local dialect historians of Haizhou City, etc., or the students of the state or the photographer who wrote the book.
At this moment, everyone was dumbfounded as they looked at Yan Changqing’s blackboard writing on the eleven-step construction method of a hydraulic biogas tank.
It’s not that there’s anything wrong with the eleven-step method for building a hydraulic biogas pool written on a blackboard by Yan Changqing, but that the eleven-step method for building a hydraulic biogas pool written on a blackboard by Yan Changqing is simply too questionable.
Question!!!
Each step is listed and described clearly, even down to the level of detail and detail including the specific dosage and operation process of each step!!!
It can be said that as long as a person is literate, even if he does not understand the principles, design reasons and design principles of hydraulic biogas digesters.
But as long as the external environment is consistent, he can build ten hydraulic biogas pools according to this eleven-step construction method of hydraulic biogas pools with perfect accuracy!!!
What is step-by-step instruction?
This is called step-by-step instruction!!!
It can no longer be said that Yan Changqing is feeding them, but that Yan Changqing is stuffing food for them, even forcefully stuffing food for them!!!
PS1: The serial is hot, and we urgently need all the handsome guys, beauties, and big guys to order and customize! I wish all the big guys who make full orders and customizations to get rich overnight, good health, and all the best.
Good luck! Thank you all! I wish you all a happy journey!