On this basis,the 17116 first-thick seam extraction is successful mined with retaining 37 m waterproof pillar under increasing ceiling.
在此基础上对17116第一个厚煤层回采面成功地进行了留设37 m防水煤柱下的提高上限开采,取得了宝贵的开采经验和良好的矿井经济效益。
The main target coal seam of Xieqiao Mine is directly covered with the Quaternary bottom gravels, whose impermeability affects the reasonable retainment of waterproof pillar.
第四纪底砾层直接覆盖在谢桥煤矿煤系地层之上,其隔水性能影响到防水煤柱的合理留设。
In order to find the possibility and safety of coal exploitation under water with reduced waterproof pillar at upper limit,the vertical boreholes were drilled from the surface to detect overlaying rock failure.
为探求水体下采煤提高回采上限的可能性和安全性,利用地面探测钻孔进行覆岩破坏探测试验,试验表明了倾斜长壁综采条件下软弱覆岩的破坏发展高度较低,仅为常规数值的50%左右,为条件类似矿井缩小防水煤柱、提高采煤上限提供重要的参考。
UDEC simulation of the water-pouring probability in exploiting waterproof coal pillars under the conditions of thick loose bed and ultrathin overlying strata;
UDEC模拟厚松散层及超薄覆岩条件下开采防水煤柱覆岩突水可能性
13-1 sublayer coal of the reducing waterproof coal pillars in No.
通过对潘一煤矿西二采区缩小防水煤柱块段13-1煤底分层赋存条件及其顶板岩性特征的研究,顶分层覆岩破坏规律的分析与研究,上覆松散含水层及基岩风化带的划分与评价,以及顶分层试采工作面出水及压架原因分析与研究,论证了本底分层块段缩小防水煤柱上综采的可行性。
The author studies mainly on the characteristics of engineering geology about the zone of weathering overlying coal seam,the mechanism of cutting waterproof coal pillar and provides the reference for the coal mine with similar condition in cutting waterproof coal pillar.
对黄淮矿区古风化壳进行了详尽分析和简易分带，重点研究了开采煤上方风化带的工程地质特性，探讨了临界风化带开采缩小防水煤柱的机理。
Numerical simulation of influence of water barrier pillars for subsided column on rock failure in mining process;
陷落柱防水煤柱留设对围岩变形影响的数值模拟
Static simulations at different time of working face with water barrier pillars are carried out with FLAC3D , pseudo-dynamic simulation for excavation process of moving forwards are made up of static simulations being arranged according to rank of moving forwards in time field.
采用FLAC3D软件进行了防水煤柱留设条件下采矿工作面推进不同时刻的静态模拟,按推进顺序在时间域上的编排即构成了推进全过程的准动态模拟,可视化的结果为采矿影响评估、工作面布置和煤柱留设等采矿决策提供了依据,模拟结果表明,应力集中系数均随推进距离增加而增加,推进距离超过一定数值后,应力集中系数趋于常数;防水煤柱对顶底板位移影响极大,煤柱留设少,底板位移大,较大的煤柱尺寸,对应较小的顶底板破坏深度和较小的应力集中系数。
On Supervision and Administration of Non-Public-owned Economy --Reflect on"the Seep Water Accident in Daring Coal Miner of Guangdong";
试论对非公有制经济的监督与管理——由“广东大兴煤矿透水事故”引出的思考
Detection of Leaking Velocity in Colliery Underpass on Left Side of Zhanghe Reservoir
漳河水库左岸煤矿地下透水通道流速探测
Analysis on the rescue of "10.29" flooding accident in Mazhuang coal mine
浅析济源马庄煤矿“10.29”透水事故抢险救援
Technology of Improving Coal-seam Permeability with High Pressure Pulsed Water Jet and Its Application on Rrock Cross-cut Coal Uncovering
高压脉冲水射流增透技术在煤矿石门揭煤中的应用研究
Ten coal miners have been killed and 18 are missing in a coalmine flood in Sichuan Province.
四川省一家煤矿发生透水，10名矿工死亡，18人下落不明。
Reports say that the accident happened at the two-year-old Longtan mine in Xiaojing Township Tuesday night.
据报导，星期二夜间，小井乡开工两年的龙滩煤矿发生透水事故。
fully hydro mechanized mine
全部水力机械化的煤矿
Results Analysis on Safety Penetration Improvement Technology for Outburst Seam in Qinan Mine
祁南煤矿突出煤层安全增透技术效果分析
Experimental study on the permeability of coal rocks of an gas-rich coal mine
某高瓦斯矿煤岩渗透特性的实验研究
Study on the Reclimaning of Fault Waterproof Coal Pillar in Mafang Mine;
马坊煤矿断层防水煤柱开采回收研究
Application of Hydraulic Coal Mining in Guhan Joint Venture Coal Mine
水力采煤在襄垣古韩联营煤矿的应用
Application of Seam Infusion on 2326 Working Surface of Qiao'er Colliery
煤层注水在桥二煤矿2326面的应用
Producing special cement from stone coal and tailings of cooper-lead-zinc ore
应用石煤、铜铅锌矿尾矿烧制特种水泥
Study on Ventilation Technology for Da Shuitou Hign Methane Mine;
大水头煤矿高瓦斯矿井通风技术研究
Time Series Analysis on Mine Inrush Water Quantity in Yutianbao Mine
鱼田堡煤矿矿井涌水量时间序列分析
Application of Mine Well Draining and Controling System in Zhangji Coal Mine
矿井排水控制系统在张集煤矿的应用
Research on Flocculation Setting Test of Coal Slurry Water in Renlou Coal Preparation Plant
任楼煤矿选煤厂煤泥水絮凝沉降试验研究
Operation Practice of Coal Slurry System at Jining No.2 Coal Preparation Plant
济宁二号煤矿选煤厂煤泥水系统运行实践