caving造句
top slicing combined with ore caving
This paper discusses some geomechanics problems in block caving.
Sub-level caving is an efficient and safe mining method.
This paper analyze the problems of expanding mining caving lightly set-up room with traditional shield support, it took the influence to join caving lightly workface.
Sublevel caving without sill pillar is used in Xishimen Iron Mine.
The West Shimen iron mine is produced by sublevel caving mining without pillars.
Gas comprehensive way technology for fully mechanized top high gassy coal caving mining face
Contemporary illustrations show cathedral spires collapsing, vaults caving in, high scaffolding keeling over in a chaos of planks and poles.
We also introduced statistical way to analyze the strata in the initial roof caving and carried out reasonable classification.
The caving reasons of the rib area in front of supports is analyzed, at the fully mechanized caving coal face, in the hard roof, soft coal, soft bottom and large inclination thick coal bed.
The paper introduces the background, the technical difficult, the general design and the operation of technical transformation in Xiagou coal mine with longwall top-coal caving mining.
On the basis of analyzing mechanical situation of floor strata of roadway driving along goaf in fully mechanized sub level caving face, a mechanical model was established.
Finally, the distribution law of stress filed and the causes of goaf caving zone were analyzed according to the primary stress nephogram.
Aimed at the fault situation of No. 28041 blasting caving face, three kinds of crossing the fault projects are established. Their advantage and shortage are expounded.
The following research results are obtained: the top coal caving technique and increasing the resistance of the support can reduce the pressure on the coal wall.
As the older Uchiha was more prone to caving in to his little brother's requests when he was actually acting his young age, Itachi had consented to let Sasuke ride on his back.
It adopt dry filling method in the orebody above -350m level and adopt the method of sublevel caving in the orebody under the level. Exploitation engineering already reach -385m level.
There's something called a trench box - a metal case that holds back the sides of the walls - to be used to stop them caving in when you dig deeper than 5ft.
The stability of the base structure for the fracture rock-mass of great stress area in Jinchuan lean ore area mining by natural caving process is analyzed by the three-dimensional elastic-plasticity finite element numerical analogy.
Based on the successful application of gob-side entry retaining at longwall top coal caving face, a new way for realizing intensive and high efficiency is put forward in thick seams.
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天下一统造句
1、百年烽火,乱世枭雄。尊者金眼,天下一统。2、如今天下一统,纵横术就是屠龙之技,派不上用场。3、当时曹*额手相庆,认为天下一统指日可待。4、如今天下一统,纵横术就是屠龙之技,派不上用场。5、可是朕不甘心,朕有生之年,还没看到河清海晏,天下一统。6、自古,霸者,不长矣;...
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带岁造句
1、一路走来,免不了会携带岁月的尘埃。2、他还固定的热带岁三百六十五点二四二八天。...
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康复评定造句
1、目的探讨*中毒患者的临床特征、康复评定及康复治疗。2、方法应用BPRS、SANS、住院精神病人康复评定量表进行评估。3、目的探讨康复评定和治疗对吉兰-巴雷综合征的作用4、结论:强度时间曲线测定在腰椎问盘突出症的康复评定中具有一定的应用价值。5、结果根据...
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impatient of造句
1、Heisimpatientofreproof.2、Altogether,hewasimpatientofthepresent.3、Hisquickrecognitionsmadehimfranticallyimpatientofdeliberatejudgement.4、Grim-facedandimpatientofcritics,MrKagameweatheredthestorm.5、Testforstrongest,untwistandsplitimpat...
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