Research On Parameter Of Trip Mining Under The Thickness Collapsible Loss

As abundant the Northwest of Chinese coal resource, thickness collapsible loss was Covered on the surface, because the particularity of the structure about collapsible loss, the surface displacement and distortion by mining, which is very harmful to the building of the earth's surface and good farmland. Under the guidance of scientific development view that the development of western and environmental protection, It is an important subject of sustainable development of mining area to study and control and quarry and move the wet falling into loess overburden harm. What this thesis studies is to protect the security mining method under the condition of thickness collapsible loss. Test pass analyze the condition of the thickness collapsible loss cover with stratum of the under radix rock exist the key stratum, the configuration and the collapsible of the collapsible loss have the characteristic and rule during in the exploit sink damage, apply the function of the extremity density,the theory of the key stratum and the A.H.Wilosn colligate analyze the parameters of the trip mining in this especially conditions. Application study conclusion of thesis, which is calculated on the project instance under the village of Pubai mining area, and in order to verify the dependability of the result of calculation, at the same time, thesis carries on similar material simulation experiment and FLAC3D numerical simulation. The result shows: This kind of synthesis analyses method that confirms the strip mining parameter, which has higher dependability, it rises the ratio of the width of mining and leaving, and reduces the times of face remove and the quantity of driven, It is a kind of method with feasible economy, it has better using value...