Not long, and suddenly I feel that even underground water could easily slip.
The underground water-tight rocky cave oil storage is an advanced structure specially designed to store various oil products.
According to the permeating theory of the underground water, the principle of preventing the subsurface water draining is put forward for tunnel analyzed.
The optimal application of sound pole, leak detector and correlator supported by leak detection program have improved the accuracy of leak detection of underground water pipelines.
In view of the problems encountered in the construction of pile setting by grouting man dug hole, such as flowing sand, silty soil, underground water and rock, some solutions are summed up.
Because the sealing place is on the top of Tashan mountain, far above the road at the foot of the mountain, the underground water will not affect the construction on the sealing point.
The underground water exploitation plan will be improved, focusing on reducing the amount of underground water for industrial and agricultural purposes, in an effort to gradually elevate the underground water level.
The cause: Massive underground water torrents created by tropical storm Agatha.
Examples showing good results of water isolation proves that the grouting technology is an effective measure to control underground water hazard in mine.
The construction of the underground water diversion and power generation system of Nuozhadu Hydropower Station is difficult and has a long construction period and many disturbance factors.
The volume of supply air to an underground water powerhouse is very large. Supplying air from the ceiling can save much space in the house. Studies it with scale model tests.
Overexploiting underground water will cause land subsidence.
Windcatchers are sometimes used in conjunction with underground water canals to cool buildings.
Jurassic continental red beds in Yanzhou mining area, Shangdong Province, contains abundant underground water, in which pore is the main water-bearing space.
However, the excavation of a tunnel through the mountain on the Yu-He Highway has changed the circulation of the local underground water resources and resulted in the losses of water.
There is an underground watershed between the Huanghe River and Luohe River which has no obvious effect on the runoff.
The total hardness, sulfate, chloride and consumption oxygen quantity in mixing water , underground water and surface water existed significant difference(P
Zhengzhuang mining Field is a newly-built mine and the mining of its lower coal seams is subjected to the threat of underground water.
The cut to be excavated lies close to a large-scale transformer station. There are high voltage wires of more than 80 over the cut and several underground water pipes crossing with the cut.
Fuxin is one of coal cities in China, and its underground water quality was seriously influenced by humanity.
"But there is a price to pay for using chemicals. They leak into underground water supplies and poison drinking water and, if not used correctly, they can cause sickness and even death to farmers using them. "
After reservoir impounding, underground hydraulic tunnels will by acted by large pressure of water outside because of underground water level rising.
Although there are a lot of researches on the seepage flow of underground water, few of them are for soil stone mixture because of its largely increasing scale of FEM solution.
The water seal conditions depended on the level of underground water and whether the water level was higher than the designed one or not after using the artificial pressuring measures.
In 1972 UNICEF initiates a project to install tube Wells that pull pure underground water to the surface.
The vertical line transducer can be used in rivers, lakes, seas to measure tide, wavy, smooth sea, wave direction, velocity, and underground water level, etc.
The water proof gate is the main safety facility against underground water to the coal mine threatened by water disaster.
Excessive use of fertilizers and pesticides also pollute underground water.
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