Methods of reducing slope in life production

1. Bring your own shopping bag for supermarket shopping 2. Classification of domestic garbage, do not litter garbage so as not to pollute land, water resources and air 3. Save electricity and water, and do not waste food 4. Do not use disposable chopsticks and lunch boxes.

The Posei Line is a railway trunk line connecting the southwest and northwest. From Baoji in Shaanxi Province to Chengdu via Fengxian, Luoyang, Yangpingguan, Guangyuan and Mianyang. The total length is kilometers.

It will meet the Longhai Railway in the north, and connect the Chengdu-Chongqing and Chengdu-Kunming railways in the south. The section is connected by Yang'an (Kang) Railway in Yangpingguan; In Deyang, Guanghan and Xindu, there are branch lines to Hanwang, Papaya Ping and Guan County. Construction started in 1952, the whole line was completed and opened to traffic in 1956, and the whole line was electrified in 1975, making it the first full-line electrified railway in China.

Now the double-track reconstruction is underway, the Sichuan section has been successfully completed, and the Shaanxi section is under construction. The Baocheng Railway starts at the western end of the Weihe Valley, climbs southwest through the Qinling Mountains and the Daba Mountains, and then follows the upper valley of the Jialing River and crosses the Longmen Mountains into the Chengdu Plain. The mountains are high, the valleys are deep, and the water is urgent.

In order for the train to cross the Qinling Mountains, it has to cross a large number of tunnels and bridges, and take a reciprocating and spiraling upward line. In a straight line of only 6 km, the rise is up to 680 meters, i.e. 110 meters per kilometer. In order to reduce the slope to a slope of no more than 30 meters per kilometer and ensure that the train can crawl the slope, the line had to be repeatedly circled to become a "" shape, so that the straight-line distance of 6 kilometers was stretched to 27 kilometers by coiling, and the 7 tunnel mouths were staggered on a mountain beam.

The enormity of the project can be imagined. According to statistics, there are 304 tunnels with a total length of 84 kilometers and 1,002 culverts. There are 986 large and small bridges with a total length of 25 kilometers. The whole project penetrates hundreds of mountains, fills hundreds of deep valleys, and fills 60 million cubic meters of earth and stone alone, which can go around the earth's equator for more than one and a half weeks according to the height and width of 1 meter.

Walking into the Baoji locomotive depot, what catches your eye is a tall stainless steel statue of Maxima, which is screaming in the face of Qinling and soaring in the face of Baocheng Railway!

The current railway is a hole in the mountain, a bridge with the water, the power of the locomotive is much greater than before, and now there is no herringbone line.

A winding road is an example of how to reduce the slope.

Let abc, c=90, ac be the level, and bc is 3% higher, indicating that for every 100 increase in the level, the high (or low) increases by 3

Slope tana=bc ac=

a=1º43′。

Wrong. This is based on experience. The clutch is semi-linked when it is about to disengage.

That is, engine shake. In the case of slopes. Hit the brakes.

Or pull the handbrake and slow down the clutch when you feel the engine start to shake. At this time, the oil is slowly applied. Lift the clutch slowly.

The vehicle will not roll, and after a long time you will know where the clutch is lifted and the vehicle can not move. This requires experience, never release the clutch or increase the throttle quickly. Because it's easy for vehicles to escape.

Can't control. Cause a rear-end collision.

.Trees should be planted on both sides of the river. Houses should be built in places with gentle slopes, and trees and grasses should be planted in places with large slopes to reduce the erosion of the land by rainwater. The design justification is:

1) the area through which the river flows, covered with plants;

2) Keep an appropriate distance between buildings and rivers and hillsides.

There are many types of development and construction projects, and I don't know what type of construction project you are talking about. Generally, the slope slope of the temporary earthfill area of a typical project is generally controlled at 1:1 or, and the surrounding area is blocked by a soil bag cofferdam, and the actual stacking height of the earthwork should not exceed 2m.

If the earthwork is piled up for more than half a year, it is necessary to build a temporary drainage ditch around the temporary dumping area, and lay out a sedimentation tank. Sowing grass seeds to green slopes to reduce soil erosion such as dust caused by windy weather or erosion or erosion during the rainy season. If it is less than half a year, use tarpaulin or color stripe woven cloth for temporary covering.

The area of the temporary earthfill area should consider the amount of excavated earthwork and the size of the amount of earthwork required for backfill earthwork and greening covering in the later stage, but the most important thing is whether there is enough earthfill space in the project construction area, and if there is not enough earthfill space, it can only ensure the minimum stacking area of the backfill earthwork in the later stage, and the other earthwork can be transported to the designated waste slag acceptance site in the way of digging and transportation. The actual situation is not enough mound space, for example: if the amount of excavation earthwork of the project is 30,000m, according to the earthwork stacking height of 2m, 15000 mound space is needed, such a large mound area is definitely not suitable, your measures will not only be very expensive, the owner does not agree, the review will definitely be said by experts, so the measures are very important, you can lay an area of 4000 to 5000 mound area, Then it is said that the earthwork is temporarily transferred in the area (because the earthwork cannot be dug up and transported away by a car, and the construction is not realistic), and the last earthwork in the area is the amount of fill and green earthwork required in the later stage of the project.

Prevention and control responsibility area = project construction area + direct impact area area.

Area of soil erosion = area of soil erosion.

Project construction area = project construction land, land acquisition scope.

Direct impact area = area outside the project construction area that may cause soil erosion due to engineering construction.

Disturbed land surface area = the area range of land surface disturbed due to engineering construction.

Area of damaged soil and water conservation facilities = area of soil and water conservation facilities on the original surface with artificial soil and water conservation facilities or a certain proportion of greening, and the area of soil and water conservation functions damaged due to engineering construction.

In addition, the area of soil erosion is not equal to the area of the direct impact area.

4；1. The depth of the house is 12 meters, then the roof is meters, 3;1。It's rice.

Usually the ratio of the straight height h to the horizontal width l of the slope is called the slope, and your problem is not clear.

Soil and water conservation, especially in the upper reaches and all river basins, should not be cut down indiscriminately, and the most important thing is to control the Loess Plateau.

Let the Yellow River be diverted away from the Loess Plateau.

I have a better answer. First build the dam in the west of Zhongwei City, and then repair the canal from the Zhongwei Dam to the north, the canal passes through the west side of Helan Mountain, goes to the north of Yinshan, goes to the direction of Erenhot, and then forks from the Urad Houqi to the direction of Ejinaqi, and then closes the Zhongwei Dam for a few years, repairs and hardens the green Yellow River channel, and then changes the Yellow River east of Sanmenxia into a double channel, hardens, lowers the riverbed, and then diverts from the old Yellow River, the middle of the two Yellow Rivers is the original high riverbed to build a dam, and the two Yellow Rivers can be repaired in turn to reduce flooding. Then put Weishui:

Swimming through the Yellow River can reduce the sediment washed from the high source of loess. Then the Three Gorges will be diverted to build a canal, through Jingmen, Xiangyang, Nanyang, and connect with the Yellow River in Zhengzhou to allocate the water of the Yellow River. After the old Yellow River channel was repaired, the Zhongwei Dam was opened to the east.