This paper analyzes the causes of the blockage of the shaft coal bunker,and puts forward some methods of treating the blockage of shaft coal bunker and some suggestions for the construction of preventing the blockage of shaft coal bunker.

This article briefly analysed the design of shaft coal pocket,and particularly expounded the impacts of design on construction.

To control the main shaft coal bin construction and construction period of Suntuan mine,realized the target of construction period s inverted.

Study on scheme of IF mobile communication in coal mine underground;

The status of mobile communication in coal mine underground is introduced, the difficult technical problems including laneway infection for wireless transmission and weak signal reception and noise interference are analyzed, and ways to solve these problems are proposed.

To solve the problem of frequent over-grade trip of fast short-circuit protection in high voltage power supply system of coal mine underground,a scheme of adaptive protection system based on independent substation was proposed.