摘要
千米以上立井,遇到水文地质复杂,水的威胁较重,必须注浆打干井,才能提高施工速度。瓦斯、地热和岩爆的危害时有存在。提升、排水系统更加复杂和庞大,凿井设备、井架、稳车趋于重型化,凿井设备吊挂采用全悬吊、半悬吊和井壁悬吊多样化。井筒装备为适应深井,应改进和重新设计。
During deep shaft sinking at a depth about 1000m, it will occure with complicated hydrogeological conditions and a potential danger of underground water. It should give more efforts to sink a dry shaft which could increase a speed of shaft sinking and reduce a period of shaft sinking. It should prevent and control natural disasters of high strata temperature, gas and rock outburst. In deep shaft, the hoisting and water drainage systems will be more complicated and larger. The rope speed fo hoisting should be increased to 12 to 16 m/s. The rope loading at the terminal could be upto 50 to 100 t and the tension of the rope will be more higher. In this way, it can allow a safe operation of hoisting container. It should enlarge the clearence between the hoisting container and shaft wall in order to allow the error of uneven surface of shaft wall. Due to heavy duty shaft headframe and hoister, the permanent headframe could provide conditions for shaft sinking. In this case, shaft sinking equipment can be suspended in the shaft which could eliminate winch and steel ropes. The strength and rigid of the shaft equipments should be all increased, but the sizes should not be enlarged. Therefore, the design of the shaft beam and guide should be improved and the cross sections should be round angle and square.
