ガス突出発生原因について
1973 年 89 巻 1024 号 p. 369-372
詳細
1973 年 89 巻 1024 号 p. 369-372
In this paper causes of an outbreak of gas-outburst have been discussed that occurrence of gas-outburst is due to blasting. Under the condition that, geologically, gas-outburst is apt to occur, but actually does not happen only by such reason, the effect of blasting forces to the surrounding causes gas-outburst to be necessary.
Consequently, the state and the result of its occurrence sometimes is similar to that of the case which might be caused by geological reason.
As concerns these, this paper give an example and concludes the cause of gas-outburst statistically, and also at the last parts refers to the reason why occurrences of gas-outburst are very few in the long-wall mining system.
Many researchers regard that the cause of gas-outburst is gas pressure or earth pressure, and some others consider that blasting is the initiator of gas-outburst. But here is a significant value in this paper to put forward that in almost all cases the main cause of gas-outburst, is due to the effect of blasting forces.
