Collect empty area to be namely in colliery construction work, coal or after a few gangue extract, formation hole and cavity. In the exploitation process that has colliery resource, the manufacturing operation that picks empty area to be able to give a coal mine produces relatively serious effect, because be in the exploitation process of coal natural resources, its are put in the bequeath float coal with particular move, these float coal offerred condition of relatively convenience goods and materials to colliery spontaneous combustion undoubtedly.
Colliery spontaneous combustion produces safety to having huge menace to the whole of the colliery, also restricting the production of the colliery and exercise on certain level at the same time. Collect spontaneous combustion of empty area colliery to be in among them whole colliery spontaneous combustion is overall medium proportion is the largest, be whole about 60% the left and right sides, because air leak is brought about,most fire problem is, its are specific as follows:
(1) collects an area to bring about its fluctuation alley to close in exploitation process existence problem, cannot accomplish true sealed, cause the problem of airtight wall occurrence air leak.
(2) does not have the means of coal column to undertake persistent exploitation works through the phase of photograph adjacent, there is segregation belt in causing next level on its, after next phase are extracting with go up level time is opposite shorter, when bringing about its to issue level stoping up level appears the air leak issue that selects empty area.
(The occurrence problem of the in stopping those who collect line and fluctuation alley periphery to adopt empty area range bracket of 3) working face, because of coal column oneself prop up finite, the rock in roof is risked fall and inadequate, the occurrence of the air leak problem that cause.
(4) adopts the technology measure of the coal that put a top through put together in actual exploitation process, bring about its stoping rate is relatively inferior, bring about leaving cut a small hole, stop pick the coal of existence is many involuntary discharge of urine between line and fluctuation alley more.
The Puruite that Xuzhou auspicious installs research and development prevents bubble of grouting of gel of collect of technology of put out a fire, Huang Ni, three-phase, nitrogen and block to change an agent prevent advantage of put out a fire at an organic whole, acceded especially foamy diffuses the solid water with function and good gel is characteristic. On one hand, after water oar makes foam, slow form gel, can written guarantee many water firm inside gel, a large number of current in avoiding size are broken or break through the defect of the oar, raised oar water substantially selecting empty area in stop rate; On the other hand, formation gel can is opposite for carrier with bubble those who select empty area is tall, medium, low big range of an igneous cause or float coal is enclothed all-aroundly, and can originally written guarantee 90% above moisture forms gel layer, when fire prevention can abiding hold coal put oneself in another's position wet completely cut off oxygen, the for a long time absorption of heat when put out a fire drops in temperature, prevent igneous area resume combustion.
