1) mining gateway with dynamic broken surrounding rocks
动压破碎围岩巷道
1.
In order to improve the maintenance result of the mining gateway with dynamic broken surrounding rocks in Wangzhuang Mine,the key technology with high strength bolts and small diameter pre-stressed anchor support as well as grouting was applied to reinforce the side wall of the shallow coal pillar.
为了改善王庄煤矿动压破碎围岩巷道的维护效果,提出了高强度锚杆配合小孔径预应力锚索支护和注浆加固小煤柱帮的关键技术。
2) broken rock roadway
破碎岩石巷道
1.
Based on actual conditions of the broken rock roadway of Yuanzhuang Mine, this paper discussed the mechanism and construction techniques of bolting and grouting, and applied the technology to repairing the broken rock roadway.
根据袁庄煤矿井下破碎岩石巷道的实际情况,探讨了锚注支护技术机理和锚注支护的施工工艺,间时在实践中采用了锚注支护技术对失修巷道进行修复治理,取得了较好的技术经济效益,为破碎岩石巷道的修复提供了一条行之有效的技术途径和实践依据。
5) Loose zone around gateway
巷道围岩松动带
6) surrounding rock of roadway
巷道围岩
1.
Fracture Growth and Board Kind Structure and It's Non-equal Support in Surrounding Rock of Roadway of Fully Mechanized Caving Coal Face;
综放回采巷道围岩裂纹扩展与类板结构及其非均称控制
2.
Analysis and control of distortion of surrounding rock of roadway at deep ground of mine
矿井深部巷道围岩变形浅析及控制
补充资料：电热破碎岩石
电热破碎岩石
rock breaking with electric heating
d心阵e因sui yans厅电热破碎岩石(roek breaking with electrich-eating)利用电流通过岩石的热力破碎岩石方法。强大的电流通过岩石块的中心，使它中心部分膨胀而导致岩石破碎。由于岩石为非导体，所以电热破碎分两步，先是将岩石电击穿，然后通人大的电流加热使岩块破裂。 工频电源击穿岩石要用很高的电压，一般需数千到数万伏电压;若用高频电(。.5~10MHz)，则可降低击穿电压。岩石被击穿后，电阻大幅度下降，这时电源须有自动限制电流的装置，不因电流过大而毁坏;或切换高频电为工频电源. 击穿阶段时间很短，从几秒到lmin左右;加热阶段，视岩石性质和尺寸不同，需2~IOmin左右.电热破碎用在石英磁铁矿、铜矿石等破大块上，是一种颇有前景的方法。 (赖海辉)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条