绳索取芯金刚石钻进冲洗液在云南老厂矿区的应用

针对云南老厂矿区存在的灰岩溶洞发育地层、遇水膨胀地层、漏失地层、岩石破碎坍塌地层,在绳索取芯金刚石钻进工艺中分别选用不同的冲洗液。由于采用冲洗液处理填加剂合理,使钻机施工顺利,从而缩短了勘探周期,降低了钻探成本,提高了钻探经济效益。

严重漏水钻孔顶漏钻进护孔工艺的探讨

贵州省纳雍县五轮山煤田地层严重漏水钻孔清水顶漏钻进,遇到孔壁不稳定地层时,经常引起孔壁坍塌事故。以孔内漏失层和坍塌层间上下位置不同,提出了清水顶漏钻进中,采取孔口注液护壁和随时冲孔护壁的护孔工艺方法,取得显著的效果。

冲天炉熔渣处理工艺改进

为节能降耗,降低铸件生产成本,改善作业环境,以渣罐接液体渣工艺替代水电消耗量较大,系统故障多,污染环境,操作复杂的冲天炉炉渣水冲粒化工艺。渣罐接液体渣工艺操作简便,节约了水电耗费,避免产生水蒸气和有害气体,实现了节能降耗和作业环境友好。

热处理—电镀车间冲洗工艺改进及废水综合处理

热处理—电镀生产过程中原有冲洗工艺是采用连续多道次的自来水对钢丝直接冲洗,将冲洗水进行沉淀及中和处理后由排水管网直接排放,消耗大量水资源的同时也对环境造成污染。采用多级冲洗新工艺,即沿着钢丝行走的方向,冲洗槽液面由低到高,逐道清洗。对废水进行综合处理,经过调节池、中和反应器、固液分离池、污泥浓缩池等处理后,废酸水的pH为7～9,ρ(COD)为60 mg/L,ρ(Fe)为1 mg/L,ρ(Zn)小于1 mg/L,ρ(SS)为20 mg/L,各种指标都达到《污水综合排放标准》(GB 8978—1996)一级标准。冲洗工艺的改进及废水综合处理,使自来水消耗和废酸水排放大大减少,每年可节约生产成本36.67万元。

Wetting Characterization of Hybrid Coatings Deposited on Carbon Steel Collectors for Hydrophilic Modification

The additional anticorrosive coating and hydrophilic layer of glass fiber cloth (GFC) deposited on the carbon steel sheet (CSS) was experimented and the surface wetting characteristic of the hydrophilic modified collection electrode was investigated under single strand feed water condition. The distilled water was selected as the working fluid. The influence of Reynolds number on the surface wetting characteristic parameters and those parameters at different temperatures were specifically studied. The results indicate that the GFC surface with loose glass fiber bundles reveals remarkable surface wetting characterizations. The saturated liquid holdup of this surface is 8 - 10 times more than that of the CSS surface;the surface flowrate value is 6 - 8 percent of that of the CSS surface;the film rate of this surface is 28 - 32 times more than that of the CSS surface;the average film thickness is between a third and a half of the value of the CSS surface. Good agreement is achieved between the WESPs working temperature and the experimental temperature range with remarkable wetting characterizations that provides a theoretical basis for the industrial application. Not satisfactorily, the hydrophilic modification surface is not able to survive high temperature.

孟村煤矿采空区覆岩“两带”高度观测及计算

煤层采后覆岩导水裂隙带发育高度不同,会引起煤层上覆不同含水层的水体涌入井下,准确探查煤层开采后“两带”发育高度对煤矿防治水工作具有重要的指导意义。采用钻孔冲洗液漏失量观测法结合彩色电视窥视法,对孟村煤矿401101工作面进行了“两带”高度的探查,综合确定裂采比为18.6,冒采比为4.3。同时,通过对1411孔洛河组水位的跟踪观测,总结出了随着工作面的推进,导水裂隙带发育的规律,即随着工作面采后距离的增大,覆岩破坏形成的导水裂隙带最高点也继续向上移动。期间可能存在短暂的裂缝弥合,随着工作面的继续向前推采约97 m(1个月),导水裂隙带发育完成。实践表明,冲洗液消耗量观测和彩色电视窥视2种方法相结合,可以对“两带”发育高度观测结果进行对比和印证,是有效确定“两带”发育高度的技术手段。