Because Bailonggang is on the seaside, the groundwater level is relatively shallow, and it has to withstand the infiltration of seawater from the sea, so according to the design and planning, two seepage interception walls were made around the Bailonggang underground sewage treatment plant to intercept the infiltration from seawater.

Speaking of the seepage interception wall, Yu Qingyang remembered the seepage interception wall project that was pushed down by his uncle.

Now no one pushes himself off, this time he not only does it, but also Party A and Party B do it together.

The excavation depth of the underground sewage treatment plant is more than 30 meters, and the excavation area is so large, the foundation pit support is also the top priority.

The two seepage interception walls outside themselves have the effect of supporting stability, and there is a row of pile walls inside as the support of the side wall of the foundation pit.

It can be said that the main increase in the construction of the sewage treatment plant underground is the cost of supporting these two seepage interception walls and pile walls.

With the removal of the excavator, the percussion reverse circulation drilling rigs of each bid section appeared one after another, and the construction of the seepage interception wall began.

Because the excavation depth of the foundation pit is more than 30 meters, the depth of the seepage interception wall is 45 meters, and there is a rock structure underground, the hydraulic grab groove machine commonly used in the construction of the seepage interception wall cannot be used, and the percussion reverse circulation drilling rig can only be used.

"The construction of the seepage interception wall is very difficult, it is located on the coastline, and the geological structure is ......complex," the chief engineer of Huayu Water is introducing the on-site construction to him, but Yu Qingyang is a little distracted.

"However, the biggest difficulty of the whole project is also on the drainage, if the seepage interception wall is not done well, the subsequent work can not be carried out at all......

The chief engineer of Huayu Water graduated from Tongji University as a doctoral student, and once worked in a central enterprise, because of some lack of emotional intelligence, he was not very happy to work in a central enterprise, and was later dug up by An Yuqing with a high salary and served as the chief engineer of Huayu Water in Modu.

The price is a 140-square-meter house in the magic capital, helping him and his wife solve the magic capital household registration, as well as his wife's work.

At present, it seems that the price comparison is still okay, and the technical level of this doctor from Tongji University is still okay, except for some stereotypes.

However, this doesn't matter, Yu Qingyang doesn't care about this, in his opinion, if there are no two technical people, then it is not a serious technology, and if there are not enough people, it is not good at technology.

"In order to save the construction period, our plan is to build two seepage interception walls and pile walls at the same time!"

"Two seepage interception walls and pile row walls are being constructed at the same time, and there will be mutual disturbance between them, right? How to solve this problem?"

"When we say simultaneous construction, we don't mean simultaneous construction on the same site!

We are going to open an area of more than 1.2 million square meters, such a large site, we have enough space for simultaneous construction without disturbing each other and interfering with the construction!"

"Hehe! I ignored this! Well, your idea is good, construction at the same time, wrong construction, can greatly save time and speed up the construction progress!" Yu Qingyang nodded with a smile.

"Is that all there is to it?" asked Yu Qingyang, pointing to the percussion reverse circulation drilling rig being assembled in the distance.

"At present, there are 12 units that have entered the site, and more than 20 units will enter the site one after another!" replied the project manager of Huayu Water Affairs.

"Six bids, two seepage interception walls, adding up to almost ten kilometers, 30 drilling rigs, can ensure the construction progress?" Yu Qingyang questioned.

Although Yu Qingyang has not done the project of using an impact reverse circulation drilling rig to do underground diaphragm walls, Yu Qingyang has done it with an impact reverse circulation drilling rig to make cast-in-place piles, and it took a month for a hole to be a 100-meter-deep cast-in-place pile.

The principle of cast-in-place piles and diaphragm walls is similar, and the speed will not be much faster, so at such a speed, how long does it take to build a 10-kilometer underground diaphragm wall?

"This is already the maximum capacity of the six construction units!"

"Bullshit! I don't listen to the greatest ability! No diamonds, don't do porcelain work!

Six bids, each with no less than 30 drilling rigs, if you can't do it, you will leave the field by yourself!

Also, you are the project manager of Party A, put yourself in the right position!

He hasn't said that he can't do it, you explain it to them first, whose money are you taking?" Yu Qingyang suddenly became angry when he heard the project manager say the greatest ability, and opened his mouth to scold.

"I ......"

"What are you? Whether you can do it or not is not something you consider, you just need to put forward requirements according to the construction schedule, and let them find a way to solve other things!" Yu Qingyang unceremoniously reprimanded the project manager.

"Got it!"

Reprimanding the project manager, Yu Qingyang stared at the person in charge of the enterprise who came to participate in the groundbreaking ceremony of the six construction units and asked: "The general managers of your six construction units are all present, and the key point of the Bailonggang underground sewage treatment plant is the construction of the seepage interception wall, and if the construction of the seepage interception wall cannot be completed, no other work can be done!"

You've all heard what I just said, so I'll ask, can you bring in 30 rigs in a week?"

"Yu Dong, it is difficult to transfer 30 drilling rigs a week, but we overcome all difficulties and ensure that the machinery is transferred!" said the boss of Tongnan Construction Engineering.

"Yes, Yu Dong, we will do everything we can to transfer the equipment over! Guarantee that the construction period will not be affected!" The boss of Sujiang Construction Engineering also expressed his position.

"There is no problem on our side!" the two local enterprises said that there was no problem, and the China Construction Eighth Bureau could only follow suit.

The remaining three construction units are Hua Yu's own enterprises, and naturally needless to say, even if they buy new ones, they also have to complete the tasks assigned by Yu Qingyang.

"Hehe! Then I would like to thank a few CEOs first! Thank you for your support of our work!" Yu Qingyang said with a smile.

After thanking him, Yu Qingyang smiled and sent out an invitation, "Okay, the leader is gone, our groundbreaking ceremony is over, I have a treat at noon, please drink the start-up wine!"

Yu Qingyang, as the boss of Party A, issued an invitation, and these construction units naturally did not dare to refuse.

"Yu Dong, how can I let you have a treat, or I will treat you!" said the boss of Tongnan Construction Engineering with a smile.

"This is on our territory, or I'll please, next time Mr. Lu will please!" "The boss of Sunan Construction Engineering hurriedly said that he wanted to have a treat.

Yu Qingyang interrupted the boss of China Construction Eighth Bureau who was about to speak with a smile, "Okay, you don't have to earn it, this is the starting wine, I invite you as Party A!"

I'll treat you next time!"

"This, okay! Then next time I'll come to Dong Dong and invite Yu Dong to dinner!"

"There will be a chance! You will do a good job this time, and we will have many opportunities to cooperate next time!

Next year, we will build four large-scale solid waste treatment plants in the magic capital!

The scale of investment is not inferior to that of Bailonggang underground sewage treatment plant!

In addition, after the completion of the Bailonggang underground sewage treatment plant, we will invest in the construction of sewage treatment plants nationwide!

Our long-term goal of Huayu Water is to reach a daily processing capacity of 100 million tons in the next ten years!" Yu Qingyang casually drew a cake for them.