The Rule Study Of Falling Damage Of SHIZHUYUAN Mine Air District

Shizhuyuan lenticular ore distribution, from top to bottom overlap to form four belts. At present the major mining bonanza at 490 meters above paragraph. Mining area to the east, divided into four panels, each panel is divided into nine from north to south ore blocks, a total of 36 blocks. Mine room,15m thick disk limits are to remain continuous pillar. After 20 years of mining, leaving only two blocks of unmined. However, since 1987, since the mine began mining, as ore grade is relatively low enrichment, coupled with low world price of tungsten products, and industrial raw materials price ratio reasonable, mine operating efficiency is low, lack of economic strength, in addition to ensure the normal operation of mining, the inability to deal with filling of mined areas. Gob led to the current total of 200 million cubic meters of exposed roof area of 30,000 square meters. As a long time failed to deal with Gob, continuous breaking down many of pillar 240 meters total length, maximum roof area of 8,000 square meters of continuous exposure. This pillaring and 490 meters below the ore mining has caused tremendous threat. How to combine the mine situation, a reasonable overall planning and development of mineral resources, determine the feasible and safe pillar recovery program, and to ensure Shizhuyuan mine safe, efficient, sustainable development is a major problem be solved.To master the rich ore deposits Shizhuyuan metal segment to Pressure Activities, to eliminate safety hazards Gob, control and reduce the incidence of adverse geological disasters. To ensure safe and pillar mining, sustainable development of enterprises, the exploitation of the mine must be technical and environmental conditions to conduct a comprehensive study. Pressure and rock movement from the ground control point of view, the stability of the deposit as a whole to consider. The stability of the ore body and the overlying mountain of three-dimensional simulation of rock movement and to forecast, and timely feedback to the actual mining production process. Of possible geological disasters were part of comprehensive prevention and control.This exploration of research in the field after falling from the impact of factors starting out area of the empty area Shizhuyuan caving mining damage factor. From the engineering geological assessment of the orebody, and ore deposit occurrence of environmental status of mining to proceed, using the finite element method numerical simulation method, the stress distribution on the surrounding ore body, the stability of the state, ore mining methods, ground control mode of study. Reference to domestic and foreign scholars mine gob caving characteristics of damage. Shizhuyuan explore the stability of Gob and damage laws. A comparative analysis across a mining and mining across two different options for one or two columns back to mining safety and feasibility. Shizhuyuan column for the mining program back to a safe and reliable basis for decision making.