穿孔・発破および機械掘進による坑道の変形挙動の比較
採炭坑道の維持に関する研究 (第2報)
1989 年 105 巻 12 号 p. 925-930
詳細
1989 年 105 巻 12 号 p. 925-930
In an attempt to clarify the effectiveness of machine drivage on roadway deformation, field measurements of vertical closure were carried out both in the roadway driven with a roadheader and with drill and blast. A theoretical discussion considering the interaction between support and rock mass was also made.
The results show that there is no significant difference in the deformational behaviour of roadway driven by each method. This is related to the deterioration of the surrounding strata by the presence of water and the setting conditions of the support. A suitable support system to the strata conditions should be used to obtain the effectiveness of machine drivage on roadway deformation. However, if the magnitude of deformation of the roadway driven with machine and supported with the traditional system is within an allowable limit, the validity of using machine cutting can be found in the rapid drivage rate leading to the total cost reduction in formation and maintenance of roadway.
