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1·At present, drilling and blasting method is mainly used in the shaft excavation.

目前，天井的掘进方法，主要采用钻爆法。

2·The spoiling is a key factor influencing the advance speed for the shaft excavation, especially for the excavation of large cross section and deep shaft.

对于竖井开挖 ，尤其是大断面 深竖井开挖 ，出碴这一环节 ，往往是决定掘进速度快慢的关键因素。

3·The application results in the real shaft excavation projects indicate that the risk of cost estimation can be effectively controlled by taking a variety of measures.

井巷掘进工程中的应用结果表明，井巷掘进工程中成本估算的风险通过各种措施是可以得到有效控制的。

4·In view of the property of slurry and the peculiarity of true soil, the mechanism of slurry dado with concrete curtain wall method in shaft excavation has been studied in this paper.

本文从泥浆的性能和土层的特点出发，对混凝土帷幕凿井法泥浆护壁机理进行了研究。

5·Based on this, the explosive type that matched the ore rock conditions was determined and the basis for selecting the related parameters of the test of shaft excavation by one blasting was obtained.

据此确定了与矿岩条件相匹配的炸药类型，得到了试验地段一次爆破成井试验的相关参数选取依据。

6·Shukron's excavation uncovered a narrow shaft where spring water flowed into a carved pool, thought to be where city inhabitants would gather to draw water.

舒科伦的挖掘工程发现一个狭窄的排水井，泉水从由其中流入一个精细雕刻的池子，该池子被认为是城里居民取水的地方。

7·The some techniques of guide shaft and expansion excavation are improved for assure the successful construction and raise the safety coefficient.

为保证施工顺利进行，且提高安全性，对正反导井及扩挖系统进行了多项技术改进，提高了安全系数。

8·The excavation of long shaft under high dip Angle and large diameter has a big difficulty and a high risk.

陡倾角、大直径、长斜井开挖施工难度大、危险程度高。

9·Meanwhile, surge shaft is an underground structure because its body is buried by surrounding rock, and the excavation of cavern with big inner diameter will influence stability of surrounding rock.

同时调压井埋于地下，属地下结构，大内径洞室的开挖关系到围岩的稳定。

10·The excavation speed of pilot shaft is one of the key difficulties for the excavation of shaft, high ones in special, of hydropower works.

水电工程竖井特别是高竖井开挖，主要难点体现在竖井导井开挖的速度上。