Study On The Mechanism Of Water-Bursting Disaster From The Floor Of Mine And It's Integrated Judgement And Measure And The Software Exploitation Of Forecast System

Starting with analyzing the structure of cover rock motion, combining with the statistically analyzed results, this paper studied destruction mechanism of coal bed floor rock mass under the common effects of the different structures of cover rock motion and confined water, performed examination with the on-the-spot test result. On this basis, it discussed the dynamic mechanism of coal bed floor inrushing-water, and made an investigation on the prediction of coal bed floor inrushing-water. At first, it analyzed stress state in the seam floor of stope with different structure of cover rock motion, and drew some disciplinary conclusions, adopting elasticity-plasticity theory. Then investigating the character of coal bed floor rock mass structure, and using mathematics statistics method, it analyzed crack developing laws, realized the computer simulation of crack network, and put forward a method searching the main inrushing-water channel of coal bed floor. On the basis, it studied deformation and destruction character of coal bed floor rock mass, analyzed interface slippage deformation and crack extension deformation mechanism of coal bed floor rock mass under the common effects of the different structures of cover rock motion and confined water, arrived the formula calculating the destroying depth of coal bed floor rock mass; combining with FEM simulation, analyzed resisting-water performance of coal bed floor terrane, and performed validation on the spot with bore-head leaking multi-loops affusion (discharge) system which is designed by the author; combining with 3-dimensions space distributing characteristic of coal bed floor inrushing-water and statistical analyzing results of coal bed floor rock mass structural characters, analyzed the inrushing-water mechanism of intact and fractural floor, and then researched in detail the dynamic mechanism of floor inrushing-water; made a new definition and further classification about safety terrane of traditional three-strips theory, clarified lagging inrushing-water mechanism of floor. The paper analyzed seepage character of stope floor crack, and buiIt the formula about floor crack seepage under the effect of extraction. At last, the paper investigated the theory predicting floor inrushing-water, and developed the system software predicting floor inrushing-water based on concurrent operation of definite and fuzzy information.