摘要
介绍这种井壁结构及其功能、施工设备、凿井设施和施工方法。
Auxiliary shaft, 8 m in dia. and 737 m in depth, at Donghuantuo colliery, Kailuan Bureau, is built adopting composite shaft Walling construction. Composite shaft Walling construction consists of 0.75m cast in situ reinforced concrete, 8 mm steel plate, 0.25m asphalt layer, 0.3 m concrete block and 0.1m grouting layer from inside to outside. Reinforced concrete and steel plate are permanent shaft walling bearing ground and ground-water pressures. Asphalt layer is mixture of 200# liquid asphalt and rock powder, specific gravity of 1.3 g/cm^3, and takes waterproofing and sliding layer effect. Grouting alyer forms outside shaft walling and packs uneven places.Procedure Construction procedure of composite shaft walling are as follows; Unfrozen and frozen earth are excavated by blasting and grabbing. Qutside shaft walling is built by cement blocks and wood-lined plates till 208.2m in depth below weathered base rock zone. Concreting supporting ring, constructing main shaft walling base and welding steel plate are finished successively. Steel plate layer is 9 m high. Then binding reinforced bars of inside shaft walling, building formwork and concreting inside shaft walling are finished one after another When concreting liner is 60 m high, pour mixture of asphalt and rock powder into space between outside shaft walling of concrete blocks and concreted inside shaft walling. Repeat aforesaid procedure until finishing all the jobs.
出处
《煤炭科学技术》
CAS
北大核心
1990年第1期10-14,共5页
Coal Science and Technology
