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Gold Science and Technology ›› 2023, Vol. 31 ›› Issue (5): 856-864.doi: 10.11872/j.issn.1005-2518.2023.05.021

• Mining Technology and Mine Management • Previous Articles     Next Articles

Application of EGR Portable Full Hydraulic Drill in Fluorite Mine Exploration

Xiong ZHANG(),Yaopeng ZHANG,Enning NIU,Lingli HUA,Xinquan LV   

  1. Xi’an Mineral Resources Research Center of China Geological Survey,Xi’an 710100,Shaanxi,China
  • Received:2023-02-09 Revised:2023-05-25 Online:2023-10-31 Published:2023-11-21

Abstract:

EGR portable full hydraulic drill is a new type of drill rig in recent years.It is a full hydraulic drive, long-stroke feeding power drill,widely used in geological prospecting,to drill trough mineral exploration,railway,bridge and other engineering investigation and hydrogeological exploration.The purpose of this paper is to study the construction capability of this kind of drill and its applicability to exploration in the Beishan Desert Gobi area through practical application,so as to provide more practical reference for the promotion and application of this kind of drill in the industry.This paper introduced in detail the mechanism composition,structural characteristics,main technical parameters of EGR portable hydraulic drill and its application in fluorite prospecting in Beishan area.By comparing with the traditional drill and the same type of drill in various aspects,it is pointed out that this type of drill has many advantages,such as good disassembly,high safety,light weight,low labor intensity and high efficiency of construction platform.In addition,combined with the construction practice of 9 drilling holes in Beishan exploration area,the paper analyzedthe performance of EGR portable hydraulic drill in construction capacity,drilling efficiency and construction cost,etc.At the same time,Beishan is a desert Gobi area,with harsh natural environment and frequent sandstorms,which have adverse effects on the normal operation and maintenance of the full hydraulic drill.In order to test its applicability in the exploration of Beishan fluorite deposit,the paper also points out some shortcomings and application prospects of EGR portable hydraulic drill.

Key words: portable drilling rig, technical specification, core drilling, efficiency of drilling, applicability, Beishan area

CLC Number: 

  • P634

Fig.1

Assembly diagram of EGR portable fully hydraulic drilling rig(EP600PLUS)"

Table 1

Performance parameters of EP600PLUS drilling rig"

参数类型参数名称数值
施工能力钻探能力/m260/550/800
钻孔直径/mm108/96/75.5/60
取心直径/mm71/56/42
钻机动力涡轮增压柴油发动机/kW99(3×33 kW)
液压系统最高压力/MPa21
最大流量/(L·min-1210
顶驱式动力头最大扭矩/(N·m)800
最高转速/(r·min-11 500
给进行程/m1.83(油缸驱动)
提升力/kN130(双油缸)
给进力/kN78(双油缸)
卷扬机平均速度/(m·min-1150
提升力/kg700
钢丝绳直径/mm5
容绳量/m900
导轨与桅杆总高/m5(90?时)
钻进角度/(°)45~90
外形与重量机台面积/m24×4(6~8根枕木)
模块数/件13
最重模块质量/kg180
总重/t1.5

Table 2

Main petrophysical characteristics of rocks in the exploration area"

岩性可钻性级别研磨性硬度完整程度
表土层、残坡积层1~3破碎
石英细砂岩、石英杂砂岩5~7中硬、硬较完整
白云质灰岩3~4较软较破碎
硅质白云岩2~4较软较破碎
含黑云母二长花岗岩6~8中硬、硬较完整

Fig.2

Drilling structure design"

Table 3

Combination of drilling tools used for drilling of each level of hole section"

开钻次序地层钻进口径取心钻具组合取心方式
一开第四系覆盖层?110 mm?110 mm合金钻头单管取心
二开基岩HTW?91.3 mm金刚石钻头+?96.4 mm扩孔器+HTW绳索取心钻具+?96.1 mm钻杆绳索取心
三开基岩NTW?73.3 mm金刚石钻头+?75.9 mm扩孔器+NTW绳索取心钻具+?75.7 mm钻杆绳索取心

Table 4

Range of drilling technical parameters"

钻头规格钻压/kN转速/(r·min-1冲洗液量/(L·min-1
?11015.0~20.0200~30080~100
HTW8.0~15.0350~70040~65
NTW6.0~11.0500~85030~45
BTW4.5~8.5600~1 20025~30

Table 5

Statistics of drilling construction in Beishan area"

勘查区钻孔编号

设计倾角

/(°)

终孔井深/m时间/h台效/m
纯钻辅助机故井故停待
花石头山ZK0-155201.2798.6748.170030.16818.74
ZK0-26070.9852.0026.00000655.20
ZK0370159.3887.4234.00000944.50
ZK0450140.1895.5040.5008.00144.00350.35(700.90)
ZK057065.0840.5019.50000780.96
古硐井ZK085095.0084.0024.00000633.33
ZK075095.0884.5819.42000658.25
ZK095089.3870.7523.25000684.61
ZK066390.2871.2524.75000677.10

Fig.3

Comparison of handling site between traditional drilling rig and EGR portable drilling rig"

Table 6

Cost comparison of portable drill and vertical shaft drill"

机型购置成本/万元施工任务量/m配备人员/人搬迁安装时间/d

占地面积

/m2

青苗赔偿

/万元

材料费用

/万元

维修保养

/万元

平均单位成本

/(元·m-1

XY-44A131 000134~513×100.30~1.2053.350.32536.7
EP600Plus981 000101~26×80.05~0.4030.190.41306.0

Fig.4

Comparison of drilling site before and after construction"

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