平朔矿区主要环境岩土工程问题及对策

在平朔矿区的工程建设中,存在有采空区、深厚填土、陷落柱、地下水等环境岩土工程问题,对这些环境岩土工程问题进行研究探讨,有助于积累经验,有利于矿区的可持续发展。     

Geomechanical service in mining under gas-and-dynamic phenomena

The authors validate efficiency and safety of mining under possible gas-and-dynamic phenomena by directing natural energy of rocks to breakage and based on preliminary coal degassing and implementation of resource-saving and resource-reproducing geotechnologies. Relevant recommendations are given. In addition, the authors present a procedure to forecast and to control geomechanical processes, considering formation and expansion of mined-out void in borehole mining.     

大采深高应力回采巷道综合支护技术研究

黄沙矿2123工作面埋深大、地应力高,常规支护困难。文章在岩层结构分析的基础上,对该工作面运输巷进行了锚网索支护设计,通过矿压观测证明支护是成功的,为黄沙矿深部煤巷支护提供了重要参考。     

Geomechanical conditions of mining in Tashtagol iron ore deposit

Institute of Mining, Siberian Department, Academy of Sciences of the USSR, Novosibirsk. Translated from Fiziko-tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 3–9, September–October, 1990.     

Geomechanical monitoring of mechanized stoping faces in coal mining

Main Institute of Mining, Katowice. Institute of Coal, Siberian Department of the Academy of Sciences of the USSR, Kemerovo. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, Vol. 27, No. 5, pp. 94-101, October, 1991.     

深井高应力马头门支护破坏机理及防治

针对潘一东煤矿深部高应力作用下副井马头门维护困难的问题,进行了马头门破坏机理分析,并提出了防治对策.现场应用结果表明,利用注浆、锚索网等多种方式进行支护,提高马头门、井筒及巷道相接处的围岩强度,使马头门的变形破坏得到了明显遏制.后期的应力变形监测显示,各项治理措施取得了良好的效果.     

浅析煤矿采掘中的高强支护技术

随着煤矿采煤深度的增加以及地质条件的日渐复杂,煤矿巷道安全性高强支护技术要求也随之提高。工作人员在煤矿开采过程中,会遇到一些巷道顶板高硬度的顶板岩石,但是又因为其强度低造成巷道顶板裂隙的增加,大大降低了支护的安全系数,本文将重点探讨下煤矿采掘过程中的高强支护技术的应用与研究。     

Geomechanical evaluation of roof-and-pillar parameters in transition to underground mining

The authors present studies into geomechanics of Berezit gold–polymetal deposit at the stage of transition from open pit to underground mining. The authors have carried out geodynamic zoning and evaluated parameters of modern stress field. Rock mass ratings are used to assess physical properties of rocks. Rock mass stress state at various stages of mining is examined using numerical modeling, and underground mining system parameters are evaluated using Mathews procedure and analytical relations.     

Geomechanical assessment of ore drawpoint stability in mining with caving

The authors solve the problem on stress-strain state of adjacent rocks of ore passes arranged in the face area under caved ore and the ore passes arranged both lengthwise the stope and in the stope face area (the face ore drawing scheme and the stope-through drawing, respectively) by using the finite element method. The article describes stress distribution in higher stress zones and in distressed areas depending on ore discharge preparation techniques at depths down to 1.5 km.     

大采深动态压力下回采巷道支护参数确定

通过巷道围岩受力变形规律的分析,提出有利于轨道巷围岩稳定的断面形状和断面尺寸。在此基础上,根据围岩变形量以及满足8405轨道巷通风、行人、运输等要求的前提下,确定8405轨道巷合理的支护方式。     

高应力区矿块的回采顺序

本文针对小官庄铁矿矿体赋存情况、地压状况和应力分布规律 ,利用科技攻关取得的成果及生产实践经验 ,对现行开采方案条件下如何确定科学合理的回采顺序 ,解决高应力区矿块回采问题 ,对控制和减少应力叠加现象进行了探讨。     

大采高综采面顺槽超前支护支架及其应用

论文分析了神东矿区大采高综采工作面开采矿压显现规律,介绍了超前支护支架的主要结构、技术特征和超前支护支架在神东矿区大采高综采工作面顺槽的应用情况。结果表明,在大采高综采工作面推进速度加快、顺槽宽度和高度逐渐加大的情况下,采用大采高超前支护支架进行顺槽超前支护,可以有效保证支护的安全性,提高支护效率,降低支护成本。     

浅述大采高技术与大采高液压支架的研发

大采高综采技术就是目前煤矿开采行业中的一种方法,它具有高产高效的特点。在该技术中,液压支架的使用提高了采煤以及运输设备的效率,为实现综采工作面高效与生产安全作出了贡献,是目前大采高技术中不可或缺的核心要素。     

Geomechanical assessment of mining conditions in the Khingansk manganese ore body

The article reports the geomechanical assessment of rockburst-hazardous Khingansk manganese ore body (Poperechny extraction site) at the early stage of development. The researchers accomplished geodynamic zoning of the ore body, analyzed mining-and-geological and mine-technical conditions, and estimated parameters of physico-mechanical properties of host rocks and ore. Using numerical modeling, the stress state of the ore body and enclosing rock mass at various mining stages is assessed, and the bottom part of the Khingansk ore body is considered rockburst-hazardous.     

Geomechanical substantiation of pillar-and-room sequences of mining the protective layer

Mining Institute, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk. Translated from Fiziko-Technicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 3–11, July–August, 1991.     

Geomechanical estimate of mining conditions at the makmal gold deposit

The paper describes an estimate of the rock stress-strain state for the current mining conditions at the Makmal Gold Deposit. The rock stability in walls of open-mined chambers, in rock projections and in a dividing pillar is determined. The authors have made recommendations to backfill the mined-out space with overburden rocks and to recover pillars with the one-stage block caving technique.     

大采高放顶煤采场应力的数值模拟研究

本文主要采用FALC3D数值模拟法探讨了某矿大采高综放面在采场不同推进距离时垂直应力、覆岩塑性区规律以及工作面液压支架的受力大小。其垂直应力峰值在煤壁前方约6m处出现,垂直应力峰值分布为23~28.1MPa。采动影响剧烈范围分布在4~8m内,采场支架承受最大阻力平均约为14000k N。本文为厚煤层的安全高效开采提供了可靠的借鉴,对生产有指导意义。     

Geomechanical assessment of deep-level mining conditions in the Yuzhnoe complex ore deposit

The article analyzes geomechanical conditions of mining in rockburst-hazardous Yuzhnoe complex ore deposit located on the east of the Primorye Territory. Numerical modeling has revealed details of mining-induced stress field formation at different stages of stoping in the conditions of highly variable occurrence of the ore bodies. The study results have become the substantiation basis for enhanced safety and increased efficiency deep mining parameters.