How to find a suitable drilling construction point for drilling machine
Release time:
2021-03-06
Although drilling groundwater is buried underground, groundwater is not independent in nature. Stationary. Sometimes it will be reflected on the road according to certain conditions. For many years, construction teams across the country have been searching for groundwater based on some conditions in the long-term production and manufacturing struggle practice of using well drilling machines, and have accumulated rich and colorful work experience.
Proper application of this work experience, it is possible to find water to obtain satisfactory practical results. a general standard for finding groundwater:
1. Find low places in high altitude according to the geomorphological conditions, and find water in valleys or geomorphological low-lying areas. For example, in mountain areas, groundwater usually gathers in valleys or metabolizes the unearthed layer to form springs. In the drowning valley in Binhai County or Binhu New Area, due to the centralized infiltration of precipitation and groundwater, it can be formed into a water lens, which is buried in the low-lying land of the drowning valley. In desert areas, the groundwater in dune land is buried shallowly in the low-lying middle of the dune.
2. Find rock layers with good water permeability and poor water permeability in rock layers. Find water in mountain areas with good water permeability (lime powder areas). Due to the good water permeability of rock layers, rainfall penetrates very deep along the cracks, and the buried depth of groundwater foundation is tens of meters to hundreds of meters. It is difficult to drill such deep wells in mountain areas with scattered residential areas at this stage. To find water in such an area, one must make every effort to find superficial or relative aquifers. In that way, the aquifer can stop the groundwater that has penetrated into the upper end from seeping down again and accumulating on top of the aquifer. This type of fissure water, although sometimes the water flow is not large, but the buried shallow, small and medium-sized residential areas of tap water can meet the requirements.
3. Find rock layers with poor water permeability. Find rock layers with good water permeability in some igneous rock layers or mountainous areas with quartz sandstone. If there is no structural fissure growth and development in the deep bedrock of drilling, its water permeability is very poor. However, the upper end of the bedrock is weathered due to long-term weathered layer, resulting in thick weathered crust with excellent water permeability. Gap and water are found in weathered crust crust crust and in weathered crust crust crust and in weathered crust and residual fissure under the wea.
4. Looking for centralization in decentralization Looking for water in rock formations with uneven fissures, the unevenness of rock fissures should be used. Look for areas where fissures grow most, such as around dykes. A dyke is a rock that intrudes into surrounding rock formations with volcanic activity or other geological formations. Because of the invasion of the dyke, the drilling shatters the surrounding rock formations, creating more concentrated fissures and storing groundwater.
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