煤矿井下采区变电硐室控制爆破

本文阐述了煤矿井下采区变电硐室控制爆破刷帮的关键技术问题 ,包括爆破方案 。

变电硐室作接力风室在铝土矿山基建通风中的应用

针对奥家湾I号矿基建工作面多、巷道长、通风条件差的问题,提出利用变电硐室作接力风室,形成安全经济的二级供风系统,大大改善了通风条件。改造后各巷道最高CO浓度为23ppm、最高SO2浓度为5ppm、最高呼吸性粉尘浓度为5mg/m3、最低风速为0.16 m/s,各项指标均达到井巷施工作业环境标准,不仅保证了工人的安全健康,并且大大提高了基建速度,促进平巷月炮掘记录达到168 m,较合同工期提前半个月贯通,取得了较好的经济效益。

18煤层内泵房、变电所硐室加固研究

太平煤矿九采区泵房和变电所位于-320m水平,为开采九采区16上、17煤层服务。针对原支护存在的主要问题,重新进行了维修加固方案设计。

导硐台阶联合施工法在阿舍勒铜矿大断面硐室施工的应用

本文叙述了导硐台阶联合施工法在新疆阿舍勒铜矿深部水泵变电硐室施工中的灵活应用。该施工法在作业安全、进度、效率、经济方面取得良好效果,值得推广。

宝平湾煤矿4-1煤层硐室布置设计优化

4-1煤层主水泵房硐室、主变电所硐室和水仓采取联合布置。结合矿井具体条件和4-1煤层各硐室位置关系,对各硐室布置及尺寸进行了优化调整,使优化后的布置更具有合理性、实用性,减少了巷道工程量,降低了初期投资,缩短了建井工期,加快了矿井建设步伐。

伊田煤业变电所支护数值模拟分析及应用

变电所硐室作为永久性开拓巷道,其稳定支护可对矿井安全生产提供重要保障。利用数值模拟,对硐室围岩的应力区和塑性区进行分析,并结合现场顶板窥视结果,提出采用锚网索喷+锚索补强+喷砼+注浆的支护方法,为变电所支护提供了合理的方案。

Feasibility study of the transient electromagnetic method for chamber blasting misfire detection and recognition

In this paper,transient electromagnetic method was used to carry out the feasibility study on the detection and recognition of chamber blasting misfire.Firstly,an electromagnetic background field was established in the test;secondly,a benign conductor was preset in the chamber,and then the background field was eliminated after the electromagnetic field was measured;thirdly,the transient electromagnetic field was measured again after blasting;at last,the chamber blasting misfire was detected and recognized by comparing the change of eddy current field of the preset benign conductor before and after blasting.The test results showed that:When the buried depth of aluminum box target was no more than 30 m,transient electromagnetic method can clearly identify the position of the aluminum box;when the buried depth of aluminum box was more than30 m,the buried depth and position of the aluminum box was not sure due to the unknown level of secondary eddy current field generated by aluminum box.

关于《煤矿安全规程》(1992年版) 第437条和第439条的修改探讨

从设计角度对《煤矿安全规程》中第 437条和第 439条存在的问题进行了分析和论证，并提出了修改意见，供《煤矿安全规程》修订时参考。