Mittwoch, 12. Januar 2011


General earthquake is because the tectonic plate is wrong to move to cause


Hot the point answer
Are earthquake depth 0 meters what mean?
Do a staff member to introduce according to the Yu woodland earthquake, earthquake depth for zero express to just fall to sink to cause of vibration.
General earthquake is because the tectonic plate is wrong to move to cause, the minimal depth is about 10 kilometers, but coal mine well however is more than 100 rices, this kind of adopt the empty area falls to sink to cause of the depth show depth to zero on the instrument.
The reading helps
The mineral well digs deeply to adopt empty area to easily fall to sink
Adopt the empty area is exercised by the artificial excavation or the natural geology output under the earth is surface of"empty", mine to the deep department along with the mineral mountain, the ground presses aggrandizement, underground empty area at strong ground of press down, easily occurrence collapse to fall trouble.Adopt empty area is influence currently mineral mountain safety production of mainly endanger one of the sources.

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