Han Qian went to the countryside to see the well exploration process, and then went down the well herself. She was satisfied when she saw the soil profile under the well. During the process of going down the well, many embarrassing things happened, which made her feel very difficult.
It was her best choice to get along with Su Hao calmly and hide back in the county town.
The two workers carried the windlass and ran away quickly. They also knew that they had seen something they shouldn't have seen and they had to escape as soon as possible. Before they left, Su Hao whispered a few more words to them.
, or a few threats, telling them that if today's incident spreads, no matter where they escape to the ends of the earth, he will send government officials to capture them. By then, going to jail will be a luxury, and the most likely option is to put them in jail.
Throw it directly into the abandoned well and evaporate from the world.
After sending away the laborers, Su Hao accompanied Han Qian and his master and servant, and walked slowly towards the entrance of the village. Han Qian didn't want to talk, and Su Hao couldn't talk to her shamelessly, so everyone walked in silence.
When they arrived at the entrance of the village, Han Qian's coachman was already waiting there. In just a moment, he had already sent Cheng Yi and Cheng Dong to the county town and found a temporary place for them to settle down. The next step
, that is, after Han Qian returns to the county town, she will find a job for Cheng Yi and contact the academy for Cheng Dong to study. These things were originally taken over by Su Hao, but they were all handled by Han Qian.
Qian actually didn't feel wronged at all.
"Brother Su, I'm leaving, please be careful." Han Qian reluctantly said to Su Hao when she got on the carriage.
"Brother Han, please report to the county magistrate when you get back, and I will definitely live up to your high expectations." Su Hao said with a serious face.
"Okay..." Han Qian felt a little disappointed, but she couldn't tell what was wrong with Su Hao.
The wheels rolled and took away Han Qian and Honglian's master and servant. Han Qian sat in the carriage, feeling confused. In front of her eyes, Su Hao's confident face and slender fingers appeared from time to time.
Compared with the sissy young masters she had seen before, Su Hao was less wealthy and noble, but more masculine and heroic.
"This is what you call a great man..." Han Qian couldn't help but muttered softly.
"Miss, what did you say?" Honglian sitting aside asked strangely.
"I didn't say anything." Han Qian flatly denied.
Honglian turned her head, stared at Han Qian's face seriously, and said, "Miss, why is your face so red..."
"Damn girl! I'm looking for a beating!" Han Qian raised her pink fist and lightly hit Hong Lian a few times.
"Help! The lady is going to kill someone and silence her..." Honglian shouted in a low voice, teasing Han Qian. She was bought by the Han family as a maid since she was a child. She was nominally to serve Han Qian, but in fact she was Han Qian's.
He is a playmate, so he talks freely.
Han Qian pinched a piece of flesh on Honglian's arm and threatened in a low voice: "Honglian, I'm warning you, when you go back, you are not allowed to tell my father and mother what happened today, otherwise..."
"Don't dare, don't dare, but, miss, do you really want to choose Mr. Su as your uncle?" Honglian asked.
"Who cares about him!" Han Qian said bitterly, but everyone could hear that there was an air of insincerity in her words.
Su Hao sent Han Qian away and began to work on his own affairs. Dai Qi had already sent someone to deliver his custom-made measuring instruments. He summoned the students back and began to explain the methods of field engineering measurement to everyone.
Including how to measure angles, how to measure distances, and how to mark.
There are many tools used in modern engineering measurement, including gyro-theodolite, dual-frequency laser interferometer, electronic level, etc. No matter how complicated it is, there are also measurements with the help of GPS. For these things, Su Hao simply did not dare to think about them.
He made do with simplicity and designed some of the most basic measuring tools. Fortunately, the work he wanted to complete did not require high precision, and these tools were enough to complete the work.
What is now in front of the students is a simple engineering theodolite designed by Su Hao. It consists of four parts: a tripod, a flat plate, a collimation, and a horizontal dial. The collimation should have used an optical device.
But where could Su Hao find a telescope? He had no choice but to design it like the ruler and front sight on a gun. It was still enough when he didn't need to measure targets too far away.
Xie Sizhi and Jiang Youbao, the two office workers of the workshop, were indeed good craftsmen. The instruments they made in a hurry were also very exquisite in workmanship. On the horizontal dial, Su Hao asked them to divide the circumference into 360 scales, and these two people actually
He also did it. Su Hao thought that if he didn't have a protractor, it would be difficult for him to do this.
It was unrealistic to explain the principles of triangulation to the students in a short time. Su Hao gave up this effort. He just told the students how to use these tools, and then calculated angles and distances according to fixed procedures.
Wait for the numerical value. Even so, among more than a dozen students, only Ma Yu and a few others understood it. After the basic skills were taught, Su Hao ordered the students to work in groups and conduct measurement practice separately. Practice makes perfect,
Su Hao believes that after everyone has tried it for a while, they will be able to fully master these methods.
Seeing the clumsy appearance of the students, Su Hao sighed secretly. As a geological expert, he knew that in fact, as early as the Song Dynasty, China's surveying technology had reached a very high level. For example, Shen Kuo once presided over the 840
During the leveling survey within a mile distance, the horizontal height difference from Kaifeng to Yangzhou was measured to be 19 feet, 4 feet, 8 inches and 6 minutes, which was accurate to the centimeter level. By the Yuan Dynasty, Guo Shoujing organized a nationwide latitude survey. In the South China Sea,
The measurement point was the Huangyan Island in later generations. At that time, the residents of a certain country were still in a state of prehistoric civilization.
It is a pity that in the eyes of scholars, these geodetic surveying tasks are considered to be done by craftsmen and cannot be promoted to the upper echelons of society. As a result, most scholars have no knowledge in this area at all.
Concept, if Su Hao hadn't dragged them out to do measurements, they would never have thought that they could do such a thing.
To calculate actual angles and distances based on measurement results, in addition to conventional addition, subtraction, multiplication, and division, there is also a very important tool, which is the trigonometric function table. Su Hao is not a genius and does not have the ability to write down trigonometric function tables from memory.
For his skills, he could only use empirical methods. He found a large open space and drew triangles with various angles with a side length of seventy or eighty feet. Then he used a tape measure to conduct actual measurements, and then manually calculated the trigonometric functions. He brought
The gang of office workers were running around following his orders, all of them panting from exhaustion. However, Su Hao was really able to work out a Ming Dynasty version of the trigonometric function table.
Su Hao and his party stayed in Caijia Village for two full days, and the well location they selected finally reached the designated depth. God was not kidding Su Hao. As Su Hao expected, a clear spring emerged from this well location.
That’s about 200 tons per hour.
After witnessing the success of drilling the well, the students' admiration for Su Hao reached its peak. Especially the student Ma Yu, who followed Su Hao every day and took advantage of almost every word Su Hao said.
Write it down, and then go back and think about it carefully. No matter how much scientific knowledge Su Hao talked about before, it was all a castle in the air and could not be verified. Now, based on the method suggested by Su Hao, they have really found the correct one in Caijiacun.
Well location, who dares to doubt Su Hao's talent?
After winning the first battle, the dozen or so students brought out by Su Hao have also initially mastered some skills in surveying the direction of groundwater. Su Hao divided his men into 4 groups, with 4-5 students in each group, plus 2
Then he asked the yamen from the workshop to go to each township to guide the selection of well locations.
Su Hao asked each group to conduct on-site surveys like they did in Caijia Village after arriving at the designated location, draw a simple map of the local area, and mark the direction of the mountains and rivers, rock types, etc. on the map. For those who have drilled wells but have not
Where the water comes out, the workers must go down into the well to observe the distribution of soil and rock layers, and record the same.
After completing these tasks, the accompanying government officials were responsible for delivering the information to Su Hao by speed, allowing Su Hao to judge the local hydrological conditions, and then send it back to the original location as a basis for selecting well locations.
This arrangement is equivalent to treating the students as Su Hao's eyes. Su Hao does not have to survey every village in person. He only needs to judge the well location based on the geological data submitted by the students. This kind of paper
The method of operation is of course not as precise as Su Hao's personal on-site survey, but it can greatly improve the efficiency. Previously, the average result of well drilling in the county was that one well could produce water for every four wells. With this method, even if
Being able to reduce the abandoned well rate to less than 50%, Su Hao's contribution is great enough.
The students were all high-spirited and got on the carriage and rushed to various villages. Su Hao himself also led a team, heading south, surveying along the way. Due to the limitations of the equipment, he naturally could not be 100% correct, but inside the three wells,
At least two of them can produce water. Compared with the previous results of drilling wells, this can be said to be a world of difference.
After learning the lesson from Caijia Village, Su Hao asked Chen Guanyu to find out about the people in the village before digging wells in each village, so as to avoid hurting the vulnerable groups in the village by digging wells and causing regrets.
Along the way, Chen Guanyu accepted "hard-earned money" from the heads of each village on behalf of Su Hao, and unknowingly received as much as thirty or forty taels. Su Hao very generously let Chen Guanyu withdraw one-tenth of it.
As a commission, Chen Guanyu suddenly felt that he was with the right person and became more motivated to work.
On this day, Su Hao took Chen Guanyu and several subordinates to Guangfeng Township, located in the southeast of the county. This place was called Dushi Town in later generations.