Basic knowledge of lightning protection

Lightning is a natural phenomenon of atmospheric discharge, and lightning sometimes causes natural disasters. The scope and manifestations of lightning disasters are constantly changing in the course of human society development. At the same time, lightning science and protection technology have a---

Mine flood prediction and water inrush

1. Prediction of mine floods The prediction of mine flooding refers to determining the danger degree of mine flooding according to the hydrogeological data of geological exploration and the special water damage survey data before mining, and compiling the mine flood forecasting map. (1) Determinat---