What are the types of groundwater that can be classified according to the way they are buried?

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

Upper stagnant water: buried in the air-containing zone not deep from the surface.

Gravity water above a local aquifer. Generally, it is not widely distributed, showing seasonal changes, appearing in the rainy season and disappearing in the dry season, and its dynamic changes are closely related to the changes of climate and hydrological factors.

Diving: Gravity water with a free surface buried below the surface, above the first stable aquifer. Diving is widely distributed in nature, and is generally buried in the pores of Quaternary loose sediments and the fissures and karst caves of the weathered crust of hard bedrock.

Confined water: Gravity water in an aquifer between two stable aquifers that is buried and filled. Confined water is subject to hydrostatic pressure; The recharge area is inconsistent with the distribution area; The dynamic change is not significant; Confined water does not have the same free surface as diving, so it does not move freely under the action of gravity, but in the form of alternating water under the action of hydrostatic pressure.

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

Upper stagnant water: It is a water storage body formed by local water insulation, which makes the infiltrated atmospheric precipitation stay in 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. Springs are formed when groundwater flows out of the ground. Diving exists on top of the first stable aquifer below the surface, with the gravitational force of free water.

It is mainly recharged by precipitation and surface water infiltration.

Confined water (artesian water) is groundwater that is deeply buried and occurs between two aquifers. Confined water fills the water in the aquifer between the upper and lower aquifers. It is subjected to pressure, and when the overlying aquifer is chiseled through, water can rise or eject from the borehole.

According to the burial conditions, it can be divided into upper stagnant water, diving and confined water;

According to the occurrence medium, it can be divided into pore water, fracture water and karst water.

According to the formation mechanism, it can be divided into leachate water, sedimentary water and endogenous water.

Upper stagnant water, diving, confined water.

Groundwater is water that is buried in rocks in the earth's crust in various forms. According to the form of its existence, groundwater can be divided into gaseous water, absorbent water, thin film water, capillary water, gravity water and solid water. According to the burial characteristics of aquifers, they can be divided into three basic types: air-bearing water, diving and confined water.

Each type can be divided into pore water, fracture water and karst water according to the characteristics of the aquifer's water-bearing voids. According to the water quality and temperature and its characteristics, it can be divided into mineralized water, high mineralized water, hot water, etc. Groundwater is widely distributed.

It is a valuable underground resource. It is an important source of water for industry, agriculture and animal husbandry, national defense and domestic water. Mineralized water, highly mineralized water, hot water, can be used for medical treatment, heat energy utilization and extraction of useful salts.

However, in mining, underground construction, and tunnel construction, sudden disasters often occur due to the large amount of groundwater gushing out. In some areas, the rise in the water table sometimes causes soil salinization, causing harm to agriculture. Overexploitation of groundwater in loose rock formations often leads to land subsidence.

Some contain special components of groundwater that can cause endemic diseases. Therefore, attention should be paid to the prevention and control of groundwater in the rational exploitation and utilization of groundwater.

Groundwater is the water resources below the earth's surface, and according to the different conditions under which it is buried, it can be divided into three categories: air-bearing water, diving water, and confined water.

1. Wrap air with water.

Aerated water refers to groundwater that is located above the diving surface and is usually found in the soil. According to the different forms of its existence, the water in the aerated zone can be divided into two categories: soil water and upper stagnant water.

1.Soil water.

Soil water refers to the water present in the pores of the soil-lead-based soil, usually due to rainfall and natural water leakage. The presence of soil water is related to the type, water content, and morphology of the soil and can provide plants with the water and nutrients they need.

2.The upper layer is stagnant.

Upper stagnant water refers to the water that exists in the upper part of the aerated zone, usually due to the rise of the water table. Since it does not leak naturally into the lower layers, it can lead to problems such as water accumulation on the surface and death of vegetation.

2. Diving. Diving refers to gravitational water that exists below the surface, above the first stable aquifer, and has a free surface. Nuclear diving is usually found in underground rocks or sediments and is an important part of groundwater resources.

The quality and quantity of diving is affected by factors such as geological conditions, water table, climate, etc.

3. Pressurized water.

Confined water refers to groundwater with hydrostatic pressure that fills an aquifer between two aquifers. Confined water is usually found in underground rocks or sediments and is an important source of water in industrial processes such as high pressure, high temperature, and high salinity. The exploitation of confined water needs to consider its geological conditions, water level, water quality and other factors.

To sum up, groundwater can be divided into three categories: air-bearing water, Huaidaihe diving and confined water according to the different burial conditions. These different types of groundwater are important water resources for human production and life, and are of great significance in rational use and protection.

According to the different conditions of the ulnar limb buried underground, groundwater can be divided into three categories: upper stagnant water, diving water and confined water. Groundwater refers to various forms of gravity water that are buried under the surface of the earth. Upper stagnant water refers to the water storage body that stays in the shallow rock ridge closed stone crevices or sedimentary layers.

The groundwater we usually see is diving. Confined water is the groundwater that is buried deeper, between two aquifers.

Groundwater is classified by origin: groundwater can be divided into infiltration water, condensate water, primary water and buried water.

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

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

Groundwater recharge mode: groundwater mainly includes precipitation infiltration, irrigation water infiltration, surface water infiltration, overflow recharge and artificial recharge. Under certain conditions, there is also lateral replenishment.

The discharge of groundwater mainly includes springs, submersible evaporation, discharge to surface water bodies, overflow discharge and artificial discharge. Springs are the main natural way of excreting groundwater.

According to the burial conditions, groundwater can be divided into three categories: air-bearing water, diving water and confined water.

It refers to the water that exists in the voids of the rock below the ground, and in a narrow sense, it refers to the water in the saturated aquifer below the surface of the groundwater. In the national standard "Hydrogeological Terminology" (GB T 14157-93), groundwater refers to various forms of gravity water buried on the surface of the earth.

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.

Groundwater is an important part of water resources, and it is one of the important water sources for agricultural irrigation, industrial and mining and urban areas due to its stable water volume and good water quality. However, under certain conditions, changes in groundwater will also cause unfavorable natural phenomena such as swamping, salinization, landslides, and land subsidence.