River sand is very expensive, why not dig sand from the Yellow River as building materials? Can you dred the Yellow River?
Yellow sand for construction (that is, sand, generally called yellow sand in the north. Of course, not all sand is yellow, there are also white sand and black sand, but yellow sand accounts for the vast majority), and the price has risen sharply. It has doubled year after year, and it has reached the level of selling by kilograms, which was unthinkable in the past. The author's hometown is in northern Jiangsu, which is the hometown of ginkgo biloba and garlic, and is also rich in yellow sand. Just find a piece of land in the field, and dig down to the depth of rice. It is sand. There are yellow sand and white sand, but most of them are yellow sand. It is in the yard, dig one or two meters down, that is yellow sand.
In the early 1980s, just a few years after the fields were distributed to households, the first round of renovations began in the countryside—the demolition of adobe houses, the rebuilding of new tile-roofed houses, and the flipping of new houses. Trends and trends are also a fashion for social development. In just over a decade, the thatched cottages have almost disappeared, replaced by brand-new red brick houses. The farmer’s enthusiasm has been mobilized by contracting production to households. Grain production has increased in steps, and the yield per mu has hit a record high. In addition, the market has been liberalized and farmers are allowed to buy and sell freely. Handicraftsmen, traders, and individual industrial and commercial households have blossomed everywhere, and farmers’ income has increased rapidly. , Rural life has undergone earth-shaking changes, the days are changing with each passing day, all kinds of household appliances have entered thousands of households, and motorcycles are no longer rare. Agricultural machinery became popular, and harvesters also began to be decapitated. The era of electric light and telephone, upstairs and downstairs, no cattle for arable land, and no oil for lighting lamps has come. The basic necessities of life in rural areas have undergone tremendous changes.
1980s rural brick house
Among them, the biggest change is still living , that is, the house. Since ancient times, people have taken food as the sky and dwelling as the earth. It can be said that, in addition to food to sustain life , the next thing is to live . If you have a house, you have a home, and if you have a house, you have a sense of belonging. For example, in today's blind date, the first condition is the house. The habit of thousands of years in China is also a custom passed down by the ancestors. Housing is the first major factor. If you have money, you should improve your living conditions. If you have a lot of money, you have to knock down old houses and build new ones. Therefore, in the 1980s and 1990s, construction sites were everywhere in the countryside, and construction was being carried out everywhere. This also indirectly promotes the development of the rural construction industry, and also makes building materials usher in a broad market prospect. Of course, at that time, it was only 3,000 yuan to build three large tile-roofed houses, including materials and construction costs. This wave of building tile-roofed houses continued until the beginning of the new century. The next wave was to demolish tile-roofed houses to build buildings, which sprang up. The tile-roofed houses of the year were also outdated and dilapidated. , Naturally, it is necessary to replace the shotgun with the cannon.
As a result, the second wave of housing construction became more and more intense, with two-, three-, and four-story buildings rising.
Whether it is building a tile house or a building, building materials are indispensable - steel bars, cement, stones and sand, among which sand is an indispensable element. In the 1980s, tile-roofed houses were built without steel bars and stones. The amount of cement (called cement in our case) was not large, and the most important ones were stones and sand. Our backer, there are rocks on the mountain, almost no money. In winter, when farming is slack, a person can go up the mountain with a shovel and a steel drill, and he can quarry three or four square meters (cubic meters) of stones in one day (we call it "stone hitting"). The car (tractor) only sells for 5 yuan. The amount of stone was large, because it was used to build the foundation of tile-roofed houses at that time, digging 1 meter to 2 meters deep, and leveling it with stones. Red bricks are more expensive, so doing so can save bricks and costs.
And sand is like stone, and it costs almost nothing. One person takes a shovel and goes to the wilderness to find a piece of land and dig it down. If you are lucky, you will be able to dig up 10 cubic meters of sand in one day. Later, some people also used mechanical mining. We called it "drinking sand", that is, using a "sand drinking machine" to drink sand. If there is no labor force at home, it is not a problem. It is also very cheap to buy money. A car (tractor) is only 5 yuan. You can also owe it on credit, and it will not be too late to give it later in the fall. From the villagers, if you don’t give it, it’s not a big deal. Anyway, stones and sand are not valuable, they are everywhere, you just need to spend a little effort.
But all this happened 30 to 40 years ago, and now trying to mine sand is basically delusional and impossible. The natural sand in the Yihe River is almost exhausted after hundreds of years of collection. By the way, the sand used in the construction of the Nanjing Yangtze River Bridge is Yihe Sand. With the gradual improvement of environmental protection and farmland protection systems and increased punishment, quarrying and sand mining have become a thing of the past. And China is an infrastructure maniac. Even in rural areas, construction is rampant. There are construction sites everywhere, and houses are being built everywhere. Commercial houses, commercial streets, and rural self-housing are built. All these are inseparable from sand, and on the one hand, production has dropped sharply. , State control, on the one hand, the demand has increased greatly, which has led to the fact that the most valuable yellow sand in the past has now become a scarce material, and the price has skyrocketed. It has changed from selling by car to selling by ton and by kilogram. , The city also sells in bags, a bag is about 50 catties, the price is about 10-15 yuan, and each catty is about 2 to 3 cents. For sand, that's an exorbitant price.
Sand desert has become an indisputable fact! And if current trends continue, construction sand may be depleted. Currently, more than 50 billion tons of sand are mined around the world every year, much faster than its natural recovery. In 2002, the Indonesian government introduced measures to ban sand exports. In 2017, Cambodia introduced a policy to permanently ban the export of sand.
In the past two years, the illegal sand mining incident in Luoma Lake, Jiangsu Province, even alerted the State Council. CCTV also conducted unannounced visits, and mainstream official media also followed up and reported the illegal sand mining. At present, this illegal sand mining has been curbed.
Sand is getting more and more tense, and the price is increasing year by year. The yellow sand, which was never used before, has become "soft gold". Sand is used in small batches in cities, and even sold on scales. This is really puzzling. Even elementary school students know that the desert area on the earth accounts for 30%. The sand in the desert is everywhere and can be seen everywhere. It can be said that it is inexhaustible. Why not get sand from the desert?
Of course, it is reasonable, correct and timely for the state to govern illegal digging and mining. After all, private digging and illegal mining will only damage the environment, the ecology, farmland, water conservancy facilities, forests, and ecological balance. Furthermore, the unqualified sand flowing into the market will also lead to the unqualified quality of construction projects, there are great potential safety hazards, and endanger the safety of buildings and construction projects.
Well, here comes a question that many people are puzzled by, that is: China is a big desert country, and there is so much sand in the desert, why not use it? Also, the Yellow River is flooded with sediment, and billions of tons of sediment are imported into the lower reaches every year, so why not excavate it for use?