1.
Drag bits are used most commonly in soft formations.
在松软岩层中最常用的是钢砂钻头。
2.
Injection of Marysan with Advanced Long Borehole in Soft Rock Stratum
在松软岩层中用超前长钻孔注射马丽散
3.
Malisan Resin Reinforce Roof Technology Being Used in Development in Soft Rocks
马丽散树脂加固顶板技术在松软岩层掘进中的应用
4.
Combined Support Technology with Concrete Sprayed Anchored Net,Anchorage Cable and Backwall Grouting for Large Profile Underground Chamber in Soft Rock
松软岩层内大断面硐室利用锚网喷、锚索、壁后注浆联合支护技术探讨
5.
Full-mechanized Caving Mining Test under Soft Sand Aquifer
松软砂岩含水层下控水综放开采试验
6.
The Experimeat and Application of Some Combined Drift Supports in Weak Rock
松软破碎岩层中巷道联合支护的试验与应用
7.
Predicting Study on Inrush of Sand and Overburden Failure of the Full Mechanized Top-coal Caving under Loosening Sandstone Aquifer in the Tie-bei Coal Mine;
铁北煤矿松软砂岩含水层下综放开采覆岩破坏及溃砂预测研究
8.
Hard strata transmit shock waves more efficiently than loose earth.
质地坚硬的岩层传播震波的效率比松软的土壤高。
9.
The Key Mechanical Parameters Determination of Rock Mass for the Slope Engineering in Red Stratum s Region;
红层软岩边坡关键岩体力学参数确定
10.
Study of measuring the broken zone in soft rock roads in Daye Iron Mine
大冶铁矿软岩巷道围岩松动圈的测试研究
11.
Application of Soft Encircling Rock Supporting Technology in Gaocheng Colliery Wang
松软围岩支护技术在告成煤矿的应用
12.
Characteristics research on drilled soft rocks and similar simulation of soft rock layer
针对钻进的软岩特性研究及软岩地层相似模拟
13.
Any of various mollusks that bore into soft rock or wood.
钻蛀虫钻入松软岩石或木头中的软体动物
14.
Influence of Weak Mudstone Intercalated Layer on Mechanical Properties of Laminated Salt Rock
软弱泥岩夹层对层状盐岩体力学特性影响研究
15.
RESEARCH ON SHEAR CREEP PROPERTY OF TYPICAL WEAK INTERCALATION IN REDBED SOFT ROCK
典型红层软岩软弱夹层剪切蠕变性质研究
16.
Research on Core Drilling in Loose Formation from In-Situ Leaching Sand Uranium Deposit;
地浸砂岩型铀矿松散岩层取心钻进技术研究
17.
Study on Reasonable Width of Coal and Rock Pillar under Thick Aquiferous Loose Bed;
厚含水松散层下煤岩柱合理留设研究
18.
RESERVOIR FLUID PROPERTY IDENTIFICATION OF VOLCANIC ROCK IN SONGNAN GAS FIELD
松南气田火山岩储层流体性质的识别