The draft of coal mine excavation plan is typically an unhealthy structural and complex tech economic problem.
矿井采掘计划的编制是典型的不良结构和复杂的技术经济问题。
Through reforming ventilation system in fire area, the capacity in disaster prevention of coal mine has improved to ensure the mine excavation disposal is proceeding orderly.
通过对火区影响范围系统进行改造，提高了矿井防灾抗灾能力，保证了矿井采掘部署有序进行。
They pointed out that the excavation of fossil fuels has its own history of catastrophic accidents, including coal mine collapses and the recent BP oil spill in the Gulf of Mexico.
他们指出化石燃料的挖掘也有导致灾难性事故的历史，包括煤矿垮塌和最近英国石油在墨西哥湾的漏油事件。
In 2003, Angulos was driving excavation equipment in a large copper mine when he felt a rush of air.
2003年，安格洛斯在一个大型铜矿矿山驾驶采掘设备时，突然感到了一股气体扑面而来。
Excavation in metal mine roadways in broken surrounding rocks under the effect of high pressure water gushing may lead to serious accidents.
在金属矿山破碎围岩巷道的掘进施工中同时存在高压涌水作用，可导致重大安全事故。
In view of the mine actual situation of coal resource approaching exhausted, natural coke excavation craft was studied.
针对矿井剩余煤炭储量接近枯竭的实际情况，进行了天然焦开采工艺研究。
South transportation roadway of depth of 955 m in Huainan Dingji Mine western coal area has shown the characteristics of the deep excavation.
淮南丁集煤矿西部采区南运输大巷埋深达955m，已显现出深部开挖的特征。
Mr. Cheng said mine safety was increasingly challenging for China and that many other countries had given up on the excavation of high-risk mines amid energy reforms.
程先生说在中国，煤矿安全问题越来越突出，因为许多国家由于能源革新，已经放弃开采高风险煤矿。
This paper introduced several views of fulfilling excavation plan, which can be a reference for mine plan and field management people.
本文介绍了完成采掘计划的几点意见，可供从事矿山计划管理及现场管理人员等参考。
This paper introduces the decompression ventilation technique with local fans in the excavation of the mine.
对矿井开采中采用的局部扇风机进行泄压通风的技术作了介绍。
The distribution laws of stress fields in the course of mine tunnel excavation are simulated by means of FLAC2D software.
FLAC2D软件模拟在矿山隧道开挖过程中应力场的分布规律。
Because of the weak borehole sealing and inadequate use of the initial free face, the higher investment and unsatisfactory blasting effect still exist in the mine tunnel excavation blasting.
由于炮孔堵塞不牢和初始自由面利用不充分，井下平巷的掘进开挖爆破仍存在投入大、爆破结果欠理想等问题。
Dams, mine tunnel, shaft, tunnel, River Cross Harbor Tunnel, subway excavation of underground works such as the use of anti-seepage curtain grouting;
水坝、矿山巷道、竖井、隧洞、江河海底隧道、地铁等地下工程开挖时采用注浆防渗帷幕；
It means to the underground mine that the stability to the excavation and support of the roadway is the precondition for the safe production in mine.
对地下矿山开采而言，保证巷道开挖与支护稳定是矿山安全生产的前提。
An excavation for the removal of mineral deposits; a mine.
为矿产的开发而进行的挖掘；矿。
On the basis of spontaneous combustion theoretical analysis, excavation technology of mine fire control are put forward and were applied to extinguish the fire on 1302 face of Yunhe Mine.
在对孤岛综放工作面的发火原因分析的基础上，提出了孤岛综放工作面掘进综合防灭火技术，并将综合防灭火技术成功应用于运河矿1302孤岛面掘进中。
At present, the excavation level of rock laneway is low, which badly influences the continuous production of coal mine.
目前，岩石巷道掘进水平普遍偏低，严重影响了煤矿接续生产。
By optimizing blasting parameters, the blasting efficiency of mine tunnel excavation is improved. The speed of tunnel excavation is ultimately increased.
文中通过优化爆破参数，提高了岩巷掘进的爆破效率，最终提高了巷道掘进速度。
Rockbursts in coal mines are dynamic failure in the rock mass around a mine opening or excavation. Its mechanism is very complex.
冲击地压是矿山工程中一种特殊的围岩破坏现象，发生机理十分复杂。
This paper makes a systematical investigation into the excavation project of the haulage tunnel at -150m level in Yunjialing Coal Mine, Handan Mines Bureau.
就邯郸矿务局云驾岭煤矿- 15 0水平运输大巷施工工程作了系统性研究。
The mining and excavation faces are the places of many mine accidents occurred often.
采掘工作面是煤矿事故多发地点。
The mining and excavation faces are the places of many mine accidents occurred often.
采掘工作面是煤矿事故多发地点。
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