What kind of rock formation has groundwater, and what kind of rock and soil structure generally has

The aquifer is mainly mudstone.

Interlayers. 1. It is formed by the condensation of water vapor in the voids of underground rocks, which is called condensate.

2. It is formed by atmospheric precipitation or surface water infiltrating into the ground, which is called infiltration water.

3. The water buried in the enclosed structure in the depths of the stratum under special geological conditions is called sequestered water.

4. Under high temperature and high pressure conditions, the bound water that comes out of the sediment in liquid or gaseous form is called the stripping water.

5. The water that separates from the lava and enters the voids of the rock is called primary water.

Ground water is water that exists in cracks in rocks or soil voids in the earth's crust.

Water that is widely buried below the surface of the earth in various states is collectively referred to as closed groundwater. Atmospheric precipitation is the main source of groundwater.

According to the different underground burial conditions, groundwater can be divided into three categories: upper stagnant water, diving water and artesian water.

The upper stagnant water is a water reservoir formed by local water insulation, which makes the infiltrated atmospheric precipitation stay in the shallow rock cracks or sedimentary layers.

Diving is groundwater buried in the first stable aquifer below the surface, and most of the groundwater commonly seen is submersible. A spring is formed when a dive flows out of the surface.

Artesian water is groundwater that is buried deep and flows between two aquifers. This kind of groundwater often has a large water pressure, especially when the upper and lower aquifers are inclined, the water body in the interlayer has to bear greater water pressure. When a well or borehole passes through the upper roof, the strong pressure causes the water to gush out, creating artesian flow.

Formation water or oil layer water refers to the general term of the edge water and bottom water, interlayer water and the bound water of the same layer as the oil yard. Bound water is water that remains in the pores when the reservoir is formed, which coexists with oil and gas but does not participate in the flow of water, is therefore called bound water.

Groundwater refers to various forms of gravity water that are buried below the earth's surface. Foreign scholars believe that there are three definitions of groundwater: one refers to all the water buried in groundwater that is significantly different from surface water, especially the part of water in the saturated zone of the aquifer; the second is to flow downwards or infiltrate to saturate the soil and rocks and replenish water from springs and wells; The third is the water stored in the rocky cavities in the ground, in the voids that make up the earth's crustal material.

1. According to different origins, groundwater can be divided into infiltration water, condensate water, primary water and buried water.

2. According to the degree of mineralization, it can be divided into fresh water, brackish water, brackish water, salt water and brine.

3. According to the nature of the aquifer, it can be divided into pore water, fracture water and karst water.

4. According to different burial conditions, it can be divided into upper stagnant water, diving, and confined water.

Groundwater not only forms different hierarchical structures such as bound water, capillary water and gravity water in the vertical direction, but also has different forces at each level, forming a vertical mechanical structure.

1. According to the degree of 1,000 humidity on the ground, the temperature, dryness and humidity of the ground are different from those of neighboring areas in different seasons. Early snow melt in spring, late freezing in winter, often wet ground in summer, slow temperature rise after sun exposure, water vapor often rises in autumn, ground is very humid at dusk, and shallow groundwater is often shallow in winter where frost is condensed in the cracks after ground freezing. For some plots, the surrounding land is cracked and white, but only the middle one is damp and not cracked, indicating that there is groundwater in the place.

2. According to animal activities and plant growth, it is judged that insects that like moisture such as frogs and snails gather in places, where there are horsetails, yellow flowers, and reeds, and there are often groundwater with good water quality. Cherry trees and grasses germinate very early, do not wither in the early days, and there may be groundwater in places where the color is particularly tender and green. In one area, the crops were generally yellow in the early days, and only one place was luxuriant; There is a unique place in the green grassland that is particularly green; Large areas of forest are unique to early budding and late leaf fall, and both may have shallow groundwater.

3. According to the topography and landform, it is generally judged that there is more groundwater in the depression surrounded by mountains, that is, the place called "palm land" and the damp place at the foot of the mountain and the water flow after rain; In the hollows of the valley intersections between the mountains, there may be springs without digging deeply, and there is more water; Where rivers bend, groundwater sources are often found; In areas where the flow of rivers has plummeted, there are often underground currents near their downstream.

If the aquifer is weak in some places, and then due to the destruction of geological tectonic factors or human factors, the aquifer is ruptured and the confined water flows out. If the surrounding terrain is a depression, a lake may form. If the lake is on a higher mountain and overflows when it is full, there will be a mudslide, and the possibility of flooding is very small.

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Naturally formed, the specific process is certainly difficult to describe in detail, you can refer to the relevant books and materials.

Groundwater is the water stored in the voids of the strata below the gas-bearing zone, including rock pores, fissures and karst caves.

Groundwater is further divided into pore water, fissure water and karst water. Pore water is groundwater that exists in the pores of rock and soil, such as loose sand, gravel, and sandstone layers. Fissure water is water that is present in cracks in hard rocks and certain clay layers.

Karst water, also known as karst water, refers to groundwater that exists in the cavities of soluble rocks (such as limestone, dolomite, etc.).

Therefore, groundwater is generally abundant in loose sand, gravel layers, sandstone, sandstone, and soluble rocks (limestone, dolomite, etc.).

I hope you're satisfied.