Restoration and Treatment of Geological Environment in Weijiadi Coal Mine,Jingyuan County,Gansu Province
The control area is located in the transition zone from the residual vein of Qilian Mountains to the Loess Plateau.The outcrops are mainly Quaternary,Jurassic and Cretaceous,and there are no large faults in the area.There is no groundwater exposure in the area,and the geological conditions are simple.Human engineering activities are strong in the area,causing multiple types of geological environment problems,mainly located in the G1 loess grouting site and T1 subsidence area.For example,there are 8 collapse fracture zones on the surface of the T1 subsidence area,and 152 collapse fractures are developed in the 8 collapse fracture zones,including 29 collapse fractures in the goaf and 123 surface deformation fractures in the goaf.There are 4 unstable slopes in the grout extraction site of G1 loess.In view of the developed geological disasters and environmental problems in the management area,the X01-X04 slopes were treated with slope cutting and load reduction measures.After the D3-D5 coal piling yard was leveled,the soil covering and greening treatment were carried out.Compaction measures should be taken to control the ground subsidence cracks.The occurrence of geological disasters can be reduced after treatment.
Jingyuan CountyWeijiadi Coal Minegeological environment problemsrestoration and treatment
万方数据
维普
