What are the current codes of hydrogeology? All of them, the more detailed the better!! Urgently

Hydrology and hydrogeological conditions.

1) Hydrological conditions.

Rivers and lakes and other surface water bodies, urban water sources, waterway transportation, climate improvement, dilution of sewage, beautification of the environment, flooding.

2) Hydrogeological conditions.

Hydrogeological conditions generally refer to the existence of groundwater, the thickness, salinity, hardness, water temperature and flow state of the aquifer.

Hydrogeology refers to the phenomena of various changes and movements of groundwater in nature. Hydrogeology is the science that studies groundwater. It mainly studies the distribution and formation of groundwater, and the physical properties of groundwater.

and chemical composition, groundwater resources and their rational utilization, the adverse effects of groundwater on engineering construction and mining and its prevention and control, etc.

With the development of science and the needs of production and construction, hydrogeology is divided into regional hydrogeology, groundwater dynamics, hydrogeochemistry, water supply hydrogeology, mineral deposit hydrogeology, soil improvement hydrogeology and other sub-disciplines. In recent years, hydrogeology and geothermal, environmental geology and other aspects of research have penetrated into each other, and a number of new fields have been formed.

1) Groundwater type.

2) Groundwater level and its fluctuation range.

and 3) the distribution and combination of aquifers and aquifers, and their respective thicknesses.

4) The strength of the permeability of soil and rock strata and the characteristics and conditions of the permeability coefficient, water richness and confined aquifer.

5) Groundwater compensation, runoff and discharge conditions.

6) The quality and erosiveness of groundwater.

Hydrological conditions.

changes in water level, quantity, velocity, water quality and flow direction of a water body; precipitation, evaporation and historical water conditions; The width of the river, its depth, the structure of the riverbed, and so on.

Geology: Refers to the nature and characteristics of the earth. It mainly refers to the material composition, structure, structure and development history of the earth, including the earth's circle differentiation, physical properties, chemical properties, rock properties, mineral composition, the output state and contact relationship of rock layers and rock masses, the history of the earth's tectonic development, biological evolution, climate change, and the occurrence and distribution of mineral resources.

And there are different geological chronology.

Hydrogeological conditions - refers to the existence of groundwater, the thickness, salinity, hardness, water temperature and flow state of the aquifer.

Groundwater is often used as a source of water for cities, especially in cities far from rivers and lakes or where surface water is insufficient and the water quality does not meet sanitary requirements.

Classification: According to the cause and burial conditions, it can be divided into: upper stagnant water, diving and confined water (can be used as urban water source).

Diving: Formed by surface water seepage, it is mainly recharged by atmospheric precipitation. Therefore, the level of the water and the flow state of the water are related to the condition of the ground, and the depth of the burial varies greatly depending on the evaporation of the ground, the geological structure (such as the depth of the aquifer from the ground) and the topography.

Confined water: The gravity water between the two aquifers, due to the water barrier board, is less affected by atmospheric precipitation and is not susceptible to ground pollution, so it has become the main water source for cities far away from rivers.

Underground funnel: the overexploitation of groundwater will cause the groundwater level to drop significantly, forming a "funnel";

Hazards: Causing the pollutant substances on the periphery of the funnel to flow to the center of the funnel, causing the water quality to deteriorate; In severe cases, it will cause water depletion and cause ground subsidence, forming a saucer-shaped depression, which is not conducive to urban flood control and drainage, and will also cause damage to ground buildings and various pipe network projects.

The flow direction of groundwater also has an impact on the layout of the city, for example, some construction projects that pollute groundwater should not be located in the upstream direction of groundwater to minimize water pollution.

In general, the hydrological conditions and geological conditions will not be written separately in the report, and the hydrogeological conditions will generally be described together.

Hydrogeological parameters, which reflect the hydrogeological performance of an aquifer or permeable layer. For example, permeability coefficient, water conductivity, water level conductivity coefficient, pressure conduction coefficient, water supply degree, water release coefficient, overflow coefficient, etc., are all basic hydrogeological parameters. Hydrogeological parameters are indispensable data for various hydrogeological calculations.

Hydrogeological parameters are generally measured through exploration tests. The permeability coefficient, also known as the hydraulic conduction coefficient, is the permeability rate of groundwater in the medium when the hydraulic slope is 1. It is an important hydrogeological parameter to characterize the water conductivity of the medium.

The permeability coefficient is not only related to the properties of the medium, but also related to the physical properties such as viscosity coefficient, specific gravity and temperature of the groundwater moving in the medium. According to Darcy's law: where v kh i, v is the osmotic velocity; h is the groundwater head; i is the penetration distance; k is the permeability coefficient of the medium, and the dimension is (l t).

Its relationship with permeability is k r

Hydrology refers to various phenomena such as water changes and movements in nature. It is a discipline that studies the temporal and spatial distribution and change law of water in nature, including surface water and groundwater.

Hydrogeology is a discipline that studies the occurrence of groundwater and the conditions of recharge and discharge.

I majored in hydrology and water resources engineering, and the two are definitely different, to put it simply: hydrology refers to the study of surface water, and hydrogeology refers to the study of groundwater. That's the big difference

Difference Between Regional Hydrogeology and Mine Hydrogeology:

1. The scope of research is different: the scope of regional hydrogeological research is large, while the scope of mine hydrogeological research is small.

2. The types of groundwater and water-bearing rock groups are different: due to the large scope of regional hydrogeology, there are many types and types of groundwater and water-bearing rock groups; Due to the small scope of mine hydrogeology, there are fewer types of groundwater and aquifer formations.

3. The difference between groundwater recharge, runoff and discharge: regional hydrogeology involves the whole process of groundwater recharge and discharge, while mine hydrogeology often only involves groundwater recharge and runoff.