On the construction surface, the area affected by the "geokinetic technique" appears as a wave-like fold, and the entire surface moves slowly like a glacier until it reaches a specific shape.

"Geokinesis" is only effective for soft soil, sediment and clay layers, and cannot destroy hard rock layers, so it is generally not possible to use this spell to dig tunnels, mainly used for digging open ditches, filling trenches or leveling uneven ground, and is very widely used in traffic construction, and can even be called "the most popular engineering spell".

Why is it popular? Of course, this spell can greatly save the manpower spent in the construction process.

In the case of Fawkes and his assistants, the two of them worked together to perform the "geokinetic spell", and the entire casting process could last for more than four hours at most, digging two long drainage ditches.

How long can it be?

Fifty-five thousand five hundred and fifty-six yards long, which is equivalent to fifty kilometers!

If ordinary workers were to dig the same two trenches with simple tools such as shovels and pickaxes, the amount of work would be equivalent to 50 days of hard work for all 1,000 workers in an engineering battalion!

That's the power of magic and engineering!

This is the core competitiveness of the world of Vares to replace scientific and technological civilization and improve labor productivity!

Fox and the mage's assistant cast a spell to dig the ditch in front, and the people on the construction site behind them were also busy, using the two parallel drainage ditches as a construction reference, building roadbeds and erecting railroad tracks between the ditches.

The standard distance between the tracks in the Far East is five feet, leaving enough space between the two drainage ditches to build two sets of rails, leaving room for additional tracks in the future.

At the same time that the 12th Engineering Battalion was in full swing, the air command received another message from the ground asking for help, and the "Independence" airship immediately turned around and appeared above the construction site of the 8th Engineering Battalion 10 minutes later.

"The situation is more complicated, let's go down and take a look." Matvey said to Roland.

Roland nodded, followed the Minister of Transportation directly out of the low-altitude suspended airship hatch, and landed in front of the construction site, along with Sister Sophie and the deputy leader of the engineering mage group, the 12th level change master Clent.

The supervisor on the construction site hurried to report the situation, in fact, he didn't need to say that everyone could see that several large rocks had rolled down the hillside next to the construction site, blocking the scheduled construction line of the railway.

"It's just a few falling rocks, why don't you just move them away and continue construction?" Roland felt that asking for support from the command for such a thing would be a fuss.

"Your Highness, the situation is not as simple as it seems, it just rained in this area yesterday, and today there are rocks rolling down from the mountain, which means that landslides are easy to occur in this vicinity, if the railway is built close to the foot of the mountain, and the train happens to pass through this place in the torrential rain, it may be attacked by the stones rolling down from the mountain, and in the most serious case, the train will even be buried by the mudslide, causing immeasurable losses!" Matvey's face grim, "This situation should have been alerted before the construction, but it has not been discovered until now, which shows that there has been a serious negligence in our geological survey work!" ”

The old man's harsh reprimand caused the construction site to fall into a dead silence, and people's faces were a little ugly. Roland coughed lightly to break the tense atmosphere, "Mr. Matvey, it is the responsibility of the relevant staff to make mistakes in the geological survey, and I will punish them in accordance with the regulations to ensure that the same mistakes do not happen again, now we should pay more attention to how to solve the problem, what do you think?" ”

Matvey's face softened slightly, and he took out the map he had brought with him to look at it, and it took a long time before he spoke.

"Based on the available information, we can't estimate the probability of a mudslide on this hill during the rainy season, so for the sake of safety, we may have to revise the drawings and take a long detour."

Old man Matvey's voice fell, and a lament rang out on the construction site. Of course, it will take a lot of time to revise the construction route, and the previously repaired section of the road will probably also be invalidated, which not only wastes a lot of materials and money, but also has caused a lot of damage to the morale of all employees of the 8th Engineering Battalion.

Roland walked over to the rolling stones and looked at where they came from. The slopes of the hill are not very steep, but the bare vegetation is sparse, and the mountain is exposed with strangely shaped limestone that reflects the blue glow in the sun.

Just as he was distracted, Elder Sophie approached with an oak staff and coughed twice, intentionally or unintentionally.

Roland looked back at her, and the eldest sister, who had the temperament of a female director, had an eager expression on her face, and it was clear that she had something to say.

"Sister Sophie, is there any way you can help us solve the construction problems here and keep the railway from the threat of mudslides?" Roland asked her knowingly.

Sister Sophie's face immediately showed a bright smile, and she replied confidently: "This kind of thing is the easiest thing in our druid's opinion, even if it is wrapped up in me, eldest sister!" ”

"Do you have any great ideas, tell me about them?" Old man Matvey turned his head and looked at the middle-aged woman with half a suspicion.

"Old man, your tone is wrong, can't you believe me?" Sister Sophie crossed her hands on her hips and stared at His Excellency the Minister with her plump chest, "You sorcerers, you have been pondering machines and drawings all day long, and your brains are rusty, you should really return to the embrace of nature and purify your impetuous mind......

"Come on, don't preach to me, get down to business, is there any way to prevent landslides?" Matvey interrupted her nagging impatiently.

"If you know anything about the natural environment, you should know that planting a large number of trees in gentle slopes can play a role in solidifying the soil and water, and the loose sandy soil is firmly fixed by the well-developed root system of plants, and when it rains, it will not be easily washed away by the floods pouring down from the mountains, and of course, natural disasters such as mudslides will not occur."

"That sounds reasonable, what do you think, Your Highness the Prince?" Matvey asked Roland.

"I fully support Sister Sophie's judgment."

When it comes to understanding nature and preventing natural disasters, no one in this world is more professional than the druids, not to mention that Roland had heard about the key role of vegetation in preventing soil erosion before he traveled to Earth. His hometown of China has suffered from soil erosion in the past, and the concept of environmental protection has long been deeply rooted in the hearts of the people, and has been investing huge manpower, material and financial resources to implement the "return of farmland to forest" for many years, and has achieved fruitful results, this successful experience can just confirm the suggestion put forward by Sophie.

PS. Data and quantities on railway drainage ditches

Gutters

The information I searched ("Railway Technical Management Regulations" and "Railway Engineering Technical Specifications") described it as follows: the cross-sectional dimensions of drainage ditches, side ditches, gutters, and interception ditches should be determined according to the flow calculation. When calculating, the flood frequency is 1/25, and the top of the ditch is kept 0.2 meters higher than the flow water level, and the trapezoidal section with a bottom width of 0.4m and a depth of 0.6m can generally be used without calculation. The slope of the gutter, interception ditch and drainage ditch should be determined according to the soil quality and slope height, and 1:l~1:1.5 is generally used. In arid areas with little rainfall or in rocky trenches, the depth of the lateral trench can be reduced to 0.4.

The number of earthwork of the manual excavation ditch: 4.9 cubic meters per working day with the core of the first and second types of soil (within 2 depths).

From the above data, it is not difficult to calculate how much labor is equivalent to performing a "ground motion" technique.

Of course, the above calculations are purely on paper, if there is any fallacy, please forgive me.