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The jade spike hangs upside down, and the twin peaks are inserted into the clouds.

The formation of the cave is the limestone Bai area underground.

As a result of the long-term dissolution of water, the insoluble calcium carbonate in the limestone can be converted into slightly soluble calcium bicarbonate by the action of water and carbon dioxide.

Due to the different levels of limestone in each part of the limestone layer and the different degrees of erosion, it is gradually dissolved and divided into karst caves with different and varied, steep and beautiful peaks and strange landscapes. For example, the world-famous Guilin Cave and Beijing Shihua Cave are masterpieces created due to the slow erosion of water and carbon dioxide. When water dissolved with calcium bicarbonate drips from the top of the cave to the bottom of the cave, the solubility of carbon dioxide will decrease due to the evaporation or pressure of the water, as well as the change of temperature, and the precipitation of calcium carbonate will be precipitated.

After millions of years of accumulation, these precipitations gradually formed stalactites, stalagmites, etc. If calcium bicarbonate-dissolved water drips from the roof of the cave, as the water and carbon dioxide volatilize, the precipitated calcium carbonate will accumulate into stalactites, stone mantles, and stone flowers. When the stalactites on the roof of the cave are connected to the stalagmites on the ground, they form strange stone pillars.

Copenhagen computer and the standardization of various parts, then you will give you a haha, you start at all.

The formation of karst caves is the result of long-term dissolution of groundwater in limestone areas, and the insoluble calcium carbonate in the limestone can be converted into slightly soluble calcium bicarbonate by the action of water and carbon dioxide. Because each part of the limestone layer contains different amounts of calcareous and different degrees of erosion, it is gradually dissolved and divided into karst caves that are not interdependent, diverse, steep and beautiful peaks and strange landscapes, and the landform thus formed is generally called karst landform.

The formation of karst caves is the result of long-term dissolution of groundwater in limestone areas, and the insoluble calcium carbonate in limestone can be converted into slightly soluble calcium bicarbonate by the action of water and carbon dioxide. Because each part of the limestone layer contains different amounts of calcareous matter and the degree of erosion is different, it is gradually dissolved and divided into karst caves that are not interdependent, various, steep and beautiful peaks and strange landscapes containing hunger caves, and the landform formed by this is generally called karst landform.

The wide place in the cave is like a square, the narrow place is like a long corridor, and the high place is 30m high. In the rainy season, there is flowing water in the whole cave, which becomes an underground river and the river falls at the bend of the slope to form a waterfall; In the dry season, there is water in some areas, which becomes an underground lake, and there may be a pool with deep water, which may be called a bottomless pool. The largest karst cave in the world is the Mammoth Cave in the Appalachian Mountains of North America, located in Kentucky, with a depth of 64 km and a total length of 250 km of all the forks.

The scale of the cave hall, the drop of the Dongting Lake, and the taste of the cave scenery are rare in the domestic karst caves. Outside the cave, the green hills are continuous, the beautiful water is meandering, the air is fresh, and the environment is quiet. In addition to the stalactites in the cave with all the varieties and common splendor and peculiarity that karst caves usually have, its most significant feature is the grandeur of Dongting Lake, and the majestic momentum and luxurious demeanor created by it.

The level between the cave halls is clear, the stone stalactites have a long history of development, and the landscape is crystal clear, white as jade.

Such as a cave hall, high meters, an area of 2625 square meters of arch hall, majestic, in Zhejiang has been opened eight tourist caves second to none. The cave avoids the huge stone mantle around it, like a silk weaving flower, and the cloud screen is rolling; The stone waterfall as high as 10 meters, such as the Milky Way Flow, pours thousands of miles; The stalagmite image, thousands of gods and Buddhas, constitutes a spectacular picture of a thousand Buddhas; The roof of the cave is covered with dense prehnite and crystal stones, which are crystal white and sparkling. In the middle of the cave hall, the sediment is piled up to form the "Hundred Beast Mountain", and the mountains are undulating.

The stalagmites in a variety of shapes are as real as the real ones, or "the lion welcomes", or "the cranes dance", or "the elephant walks", or "the golden rooster announces the dawn", or "there are many antelopes, and the shape changes magically with the rotation of the viewing angle."

Another example is the huge barrier at the south end of the second hall, the diameter of the stone pillar is 5 meters, the height is 20 meters, and the foundation is like a rock. The pillar resembles the "Nine Dragons Panzhu" of ice, and the whole stone pillar is like a jade pillar climbing the sky, which is magnificent. Travertine piles of stalagmites, stone pillars, and stone towers are lined up, and the image is endlessly changing.

Or "Dragon Girl Shepherd", or "Boy Worship Guanyin" or "Three Towers Dingli" or "Three Pools Printing the Moon", or "Hundreds of Boats Contending for the Stream", or "White Sail Reflection". The round-headed stalagmites at the bottom of the cave stand up, just like the "unearthed radish" all over the ground. Thousands of stone flowers on the east side are densely spread on the top plane of the cave of about 600 square meters, some of them are like the national color and heavenly fragrance, some are like autumn chrysanthemums blooming, and some are like a group of flowers competing for spring.

Looking at the cluster of flowers up close, and looking at the starry Milky Way from afar, it can be called a must in the cave.

The dazzling quartz stalactite landscape in each hall is countless, strange and vivid. Experts commented: "Ruijing Geode has the grandeur of the Seven Star Rocks; The splendor of Ludi Rock; The bizarre of Yaolin Cave; The tranquility of Lingshan Cave is a collection of famous caves in the world.

It not only has ornamental value, but also has high paleogeological research value. Such a wonderful underground labyrinth, how can it not be fascinating.

Small karst caves can be refilled with concrete, and large karst caves can be simply watered, but it costs a lot of money, and you can ask the geological survey department to discuss and solve them.

DAOs are more experienced. In the letter of entrustment for geological exploration, the design institute generally requires the geological exploration department to identify the undesirable geological conditions and put forward treatment opinions. In the 80s, I used to do the Guiyang project, I had a 15*100m foundation, the end rock is cantilevered, I dug the figure under the cantilever and poured 400 vertical concrete.

Wei Gong is very experienced in the construction service, some of the foundation is half rock and half soil, there is a 15m square foundation, the geological survey report is rock, digging out the middle is a stalagmite, the surrounding base is full of soil, and the sky is filled with concrete.