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e.fe.ts of ove.burde. characte.istics on dynamic failure.in unde.ground coal mining

Inte.national Journal of Mining Scie.ce.and Te.hnology 2017年第1期27卷 121-129页

作者： lawson heather e. Te.arik Douglas Larson Mark K Abraham Habte NIOSH Office of Mine Safety and Health ResearchGround Control BranchSpokane WA 99207USA

Dynamic failure., or ‘‘bumps", re.ain an impe.ative.safe.y conce.n in unde.ground coal mining, de.pite.significant advance.e.ts in e.gine.ring controls. The.pre.e.ce.of spatially discre.e. stiff roof units are.one.fe.ture.that has be.n linke. to the.e.e.e.ts. Howe.e., an e.pirical stratigraphic re.ie. indicate. that no significant diffe.e.ce.e.ists in the.re.ative.commonality of discre.e.units be.we.n bumping and non-bumping de.osits. Inste.d an appare.t re.ationship e.ists be.we.n re.ortable.bumping and the.ove.all stiffne.s of the.host rock. Howe.e., this initial study is too simplistic to be.conclusive. to we.ght the.re.ative.impact of change. in a single.variable. such as the.thickne.s or location of sandstone.me.be.s, it must be.e.amine. in isolation—i.e., in a se.ting whe.e.all othe. variable. are.he.d *** mode.ling provide. this se.ting, and the.e.fe.ts of variability in a stiff discre.e.me.be. in a hypothe.ical longwall mining sce.ario are.inve.tigate. within the.conte.t of thre. stratigraphic ‘‘type.",Compliant, Inte.me.iate.and Stiff. A mode.ling e.pe.ime.t e.amine. change. in rupture.pote.tial in stiff roof units for e.ch stratigraphic type.as discre.e.unit thickne.s and location are.manipulate. through a range.of value.. Re.ults sugge.t that the.stiff-to-compliant ratio of the.host rock has an impact on the.re.ative.stre.s-inducing e.fe.ts of discre.e.stiff me.be.s. In othe. words, it is ne.e.sary to conside. both the.thickne.s and the.distance.to the.se.m, within the.conte.t of the.host rock, to accurate.y anticipate.are.s of e.e.ate. rupture.induce. hazard; acknowle.ging the.pre.e.ce.of a discre.e.unit within the.ove.burde. in ge.e.al te.ms is an insufficie.t indicator of risk. This finding he.ps to re.ine.our unde.standing of the.role.of individual stiff, strong roof me.be.s in bumping phe.ome.a, and sugge.ts that a holistic vie. of ove.burde. lithology and site.spe.ific nume.ical mode.ling may be.ne.e.sary to improve.mine. safe.y.

关键词： Dynamic failure Coal mining Bumps Bounce.

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Analysis of the.curre.t rib support practice. and te.hnique. in U.S. coal mine.

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Inte.national Journal of Mining Scie.ce.and Te.hnology 2016年第1期26卷 77-87页

作者： Mohame. Khale. M. Murphy Michae. M. lawson heather e. Kle.e.ti Te. Office.of Mine.Safe.y and He.lth Re.e.rch Ground Control Branch Pittsburgh PA USA

De.ign of rib support syste.s in U.S. coal mine. is base. primarily on local practice. and e.pe.ie.ce. A be.te. unde.standing of curre.t rib support practice. in U.S. coal mine. is crucial for de.e.oping a sound e.gine.ring rib support de.ign tool. The.obje.tive.of this pape. is to analyze.the.curre.t practice. of rib control in U.S. coal mine.. Twe.ty unde.ground coal mine. we.e.studie. re.re.e.ting various coal basins,coal se.ms,ge.logy,loading conditions,and rib control strate.ie.. The.ke. findings are.(1) any rib de.ign guide.ine.or tool should take.into account e.te.nal rib support as we.l as inte.nal bolting;(2) rib bolts on the.r own cannot contain rib spall,e.pe.ially in soft ribs subje.te. to significant load—e.te.nal rib control de.ice. such as me.h are.re.uire. in such case. to contain rib sloughing;(3) the.majority of the.studie. mine. follow the.ove.burde. de.th and e.try he.ght thre.holds re.omme.de. by the.Program Information Bulle.in 11-29 issue. by the.Mine.Safe.y and He.lth Administration;(4) pote.tial rib instability occurre. whe. ce.tain ge.logical fe.ture. pre.aile.—the.e.include.draw slate.and/or bone.coal ne.r the.rib/roof line.claystone.partings,and soft coal be.ch ove.lain by rock strata;(5) 47% of the.studie. rib spall was classifie. as blocky—this could indicate.a high pote.tial of rib hazards; and(6) rib injury rate. of the.studie. mine. for the.last thre. ye.rs e.phasize.the.ne.d for more.rib control manage.e.t for mine. ope.ating at ove.burde. de.ths be.we.n 152.4 m and 304.8 m.

关键词： Coal ribRib sloughingRib rollingRib support de.ignRib control te.hnique.Rib bolts

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e.ploration of pe.rographic,e.e.e.tal,and mate.ial prope.tie. of dynamic failure.prone.coals

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Inte.national Journal of Mining Scie.ce.and Te.hnology 2020年第1期30卷 69-75页

作者： heather lawson Spokane.Mining Re.e.rch Division National Institute for Occupational Safety and HealthSpokaneWA 99207USA

The.purpose.of this study is to e.plore.how the.ge.che.ical and pe.rographic compone.ts of coal may impact its physical prope.tie. and how the.e.corre.ate.with a history of re.ortable.dynamic failure.in coal *** failure.e.e.ts,also te.me. bumps,bounce.,or bursts,are.the.e.plosive.failure. of rock in a mining *** e.e.ts occur sudde.ly and ofte. with no warning,re.ulting in worke. injury up to and including fatality in gre.te. than 60%of re.ortable.case. through the.Mine.Safe.y and He.lth Administration(MSHA).A database.of variable. was compile. using publicly available.datase.s,which include. compositional ge.graphic,stre.gth,and Hardgrove.grindability inde.(HGI)*** indicate. that bumping coals we.e.le.s mature.lowe. in carbon,highe. in oxyge.,softe.,and le.s we.l cle.te. than coals that did not *** liptinite.conte.t was found to corre.ate.with highe. ave.age.uniaxial compre.sive.stre.gth(UCS)***,no cle.r and dire.t corre.ation be.we.n UCS and dynamic failure.status was *** findings of this study e.tablishe. that diffe.e.ce. e.iste. be.we.n coals that had ve.sus had not e.pe.ie.ce. re.ortable.dynamic failure.*** diffe.e.ce. we.e.inhe.e.t to the.coal itse.f and we.e.inde.e.de.t of mining-induce. risk *** furthe. illuminate. how compositional attribute.of coal influe.ce. physical prope.tie. and be.an to clarify pote.tial links be.we.n ge.che.istry and dynamic failure.*** through the.be.te. unde.standing of risk can more.e.fe.tive.mitigating strate.ie. be.e.acte..

关键词： Dynamic failure Coal Bump Bounce Burst

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Lack of e.ide.ce.for ge.mline.WWP1 pathoge.ic variants in gastrointe.tinal polyposis and othe. phe.otype. sugge.tive.of PTe.-hamartoma-tumor syndrome

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Ge.e. & Dise.se. 2024年第2期11卷 524-527页

作者： Noe.i Gonzale.-Abuin Tirso Pons Te.e.a Fuste. Isabe. Quintana Mariona Te.radas Ge.ma Aiza Joan Brune. Gabrie. Cape.lá heather Hampe. Laura Valle He.e.itary Cance. Program Catalan Institute of OncologyOncobell ProgramIDIBELLHospitalet de LlobregatBarcelona 08908Spain De.artme.t of Immunology and Oncology National Center for BiotechnologySpanish National Research Council (CNB-CSIC)Madrid 28049Spain Ce.tro de.Inve.tigación Biomédica e. Re. de.Cánce. (CIBe.ONC) Madrid 28029Spain Catalan Institute.of Oncology IDIBGiGirona 17007Spain Division of Clinical Cance. Ge.omics Department of Medical Oncology & Therapeutic ResearchCity of Hope National Cancer CenterDuarteCA 91010USA

Ge.mline.activating variants in WWP1,which e.code. an e. ubiquitin ligase.that antagonize. PTe. tumor suppre.sive.function,have.be.n propose. as an alte.native.me.hanism of PTe. inactivation in PTe.-hamartoma-tumor syndrome.PHTS)-like.patie.ts with wildtype.PTe..1 More.spe.ifically,he.e.ozygous,pote.tially activating wwP1 variants we.e.first ide.tifie. by Le. e. al in patie.ts affe.te. with gastrointe.tinal oligopolyposis,including ade.omatous,hype.plastic/se.rate.,and hamartomatous polyps,and occasionally with colore.tal cance.(Table.1).Subse.ue.tly,base. on the.PHTS phe.otypic fe.ture.,wWP1 mutational scre.ning was pe.forme. in patie.ts with thyroid nodule.,2 or normoce.halic autism spe.trum disorde.(ASD),3 whe.e.ge.mline.WWP1 variants we.e.also ide.tifie.(Table.S1).

关键词： WWP1 gastrointe.tinal polyposis

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巴勒收藏博物馆英国格拉斯哥

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世界建筑导报 2024年第4期39卷 75-79页

作者： Chris Rave.scroft heather Mace. Kathe.ine.Watts Tom Robe.ts Paddy Pugh Hannah lawson 约翰•麦卡兰建筑事务所

巴勒珍藏馆是欧洲最好的博物馆之一,也是为数不多的A类苏格兰战后建筑之一。珍藏馆拥有约9000件精美和装饰性的艺术作品,极其丰富的藏品来自的年代横跨6 000年。1983年,巴勒珍藏馆被置于由三位年轻剑桥建筑师学者巴里·加松、布力特·... 详细信息

巴勒珍藏馆是欧洲最好的博物馆之一,也是为数不多的A类苏格兰战后建筑之一。珍藏馆拥有约9000件精美和装饰性的艺术作品,极其丰富的藏品来自的年代横跨6 000年。1983年,巴勒珍藏馆被置于由三位年轻剑桥建筑师学者巴里·加松、布力特·安德烈森和约翰·梅乌涅尔设计的、广受好评的博物馆建筑中。这座20世纪开创性的建筑由红色邓弗里斯郡砂岩、抛光混凝土、不锈钢、木材和玻璃建成,位于距格拉斯哥市中心4英里的波洛克郊野公园的环境中。2016年,代表格拉斯哥市议会提供文化、体育和学习活动的慈善机构格拉斯哥慈善组织指定约翰·麦卡兰建筑事务所为建筑师和景观设计师,负责博物馆的五年翻新和提升项目。

关键词：建筑事务所博物馆建筑郊野公园格拉斯哥安德烈波洛克慈善机构市议会

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Applying robust de.ign to study the.e.fe.ts of stratigraphic characte.istics on brittle.failure.and bump pote.tial in a coal mine

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Inte.national Journal of Mining Scie.ce.and Te.hnology 2018年第1期28卷 137-144页

作者： Bo-Hyun Kim Mark K.Larson heather e.lawson Spokane.Mining Re.e.rch Division NIOSH/CDC

Bumps and othe. type. of dynamic failure.have.be.n a pe.siste.t, worldwide.proble. in the.unde.ground coal mining industry, spanning *** e.ample. in just five.state. in the.*** 1983 to 2014,the.e.we.e.388 re.ortable.*** significant advance. in mine.de.ign tools and mining practice.,the.e.e.e.ts continue.to *** conditions have.be.n associate. with bump pote.tial, such as the.pre.e.ce.of stiff units in the.local *** e.fe.t of a stiff sandstone.unit on the.pote.tial for coal bumps de.e.ds on the.location of the.stiff unit in the.stratigraphic column, the.re.ative.stiffne.s and stre.gth of othe. structural me.be.s, and stre.s conce.trations cause. by *** study de.cribe. the.re.ults of a robust de.ign to conside. the.impact of diffe.e.t lithologic risk factors impacting dynamic failure.*** the.inhe.e.t variability of stratigraphic characte.istics in se.ime.tary formations,such as thickne.s, e.gine.ring mate.ial prope.tie., and location, is significant and the.numbe. of influe.tial parame.e.s in de.e.mining a parame.ric study is large. it is impractical to conside. e.e.y simulation case.by varying e.ch parame.e. ***, to save.time.and honor the.statistical distributions of the.parame.e.s, it is ne.e.sary to de.e.op a robust de.ign to colle.t sufficie.t sample.data and de.e.op a statistical analysis me.hod to draw accurate.conclusions from the.colle.te. *** this study,orthogonal arrays, which we.e.de.e.ope. using the.robust de.ign, are.use. to de.ine.the.combination of the.a) thickne.s of a stiff sandstone.inse.te. on the.top and bottom of a coal se.m in a massive.shale.mine.roof and floor,(b) location of the.stiff sandstone.inse.te. on the.top and bottom of the.coal se.m,and(c) mate.ial prope.tie. of the.stiff sandstone.and contacts as inte.face. using the.3-dime.sional nume.ical mode., *** comple.ion of the.nume.ical e.pe.ime.ts, statistical and multivariate.analysis are.pe.forme. using

关键词： Bumps Robust de.ign FLAC3D Plastic dissipate. e.e.gy Multiple re.re.sion

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Use.-frie.dly finite.e.e.e.t de.ign of main e.trie., barrie. pillars,and ble.de. e.trie.

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Inte.national Journal of Mining Scie.ce.and Te.hnology 2018年第1期28卷 3-10页

作者： William G.Parise.u Mark K.Larson heather e.lawson Douglas R.Te.arik De.artme.t of Mining e.gine.ring University of Utah Spokane.Mining Re.e.rch Division NIOSH

This contribution de.cribe. de.e.opme.t and application of a use.-frie.dly finite.e.e.e.t program,UT3PC, to addre.s thre. important proble.s in unde.ground coal mine.de.ign:(1) safe.y of main e.trie.,(2) barrie. pillar size.ne.de. for e.try prote.tion, and(3) safe.y of ble.de. e.trie. during the.advance.of an adjace.t longwall *** the.finite.e.e.e.t me.hod is by far the.most popular e.gine.ring de.ign tool of the.digital age. wide.pre.d use.by the.mining community has be.n impe.e. by the.re.ative.y high cost of and the.ne.d for le.gthy spe.ialize. training in nume.ical *** of UT3PC ove.come. the.e.impe.ime.ts in thre. e.sy ***, a mate.ial prope.tie. file.is pre.are. for the.conside.e. ***, me.h ge.e.ation is automatic through an inte.active.proce.s.A third and last ste. is simply e.e.ution of the.*** using data from se.e.al we.te.n coal mine. illustrate.the.e.se.of using the.application for analysis of main e.trie., barrie. pillars, and ble.de. e.try safe.y.

关键词： Finite e.e.e.t Coal Mine layout de.ign Main e.trie. Barrie. pillars Ble.de. e.trie.

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Gue.t e.itorial–spe.ial issue.on ground control in mining in 2020

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Inte.national Journal of Mining Scie.ce.and Te.hnology 2021年第1期31卷 1-2页

作者： Michae. M.Murphy Te. Kle.e.ti heather lawson Brije. Mishra Kyle.Pe.ry CDC NIOSH PittsburghPA 15236USA CDC NIOSH SpokaneWA 99207USA De.artme.t of Mining e.gine.ring West Virginia UniversityMorgantown 26501USA De.artme.t of Mining e.gine.ring Missouri University of Science and TechnologyRollaMO 65409USA

Ground control is the.scie.ce.of studying and controlling the.be.avior of rock strata in re.ponse.to mining ***-control-re.ate. re.e.rch has se.n significant advance.e.ts ove. the.last 40 ye.rs,and the.e.accomplishme.ts are.we.l docume.te. in the.proce.dings of the.annual Inte.national Confe.e.ce.on Ground Control in Mining(ICGCM)[1].The.ICGCM is a forum to promote.close. communication among re.e.rche.s,consultants,re.ulators,manufacture.s,and mine.ope.ators to e.pe.ite.solutions to ground control proble.s in mining[2–7].Fundame.tal re.e.rch and advance.e.ts in ground control scie.ce.de.ine.the.ce.tral core.of the.confe.e.ce.*** information to mine.ope.ators is a priority,as the.confe.e.ce.goal is to offe. solutions-orie.te. *** addition,the.confe.e.ce.has include. innovative.te.hnologie. and ide.s in miningre.ate. fie.ds such as e.ploration,ge.logy,and surface.and unde.ground mining in all *** ne. ground control te.hnologie. and de.ign standards adopte. by the.mining industry we.e.first discusse. at *** confe.e.ce.is re.ognize. as the.le.ding inte.national forum for introducing ne. ground-control-re.ate. re.e.rch and products.

关键词： ope.ators close. accomplishme.t

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Gue.t e.itorial–Spe.ial issue.on ground control in mining in 2017

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Inte.national Journal of Mining Scie.ce.and Te.hnology 2018年第1期28卷 1-2页

作者： Michae. M.Murphy Brije. Mishra Kyle.Pe.ry heather lawson Pittsburgh Mining Re.e.rch Division NIOSH Mining e.gine.ring West Virginia University Mining&Nucle.r e.gine.ring Missouri S&T Spokane.Mining Re.e.rch Division NIOSH

Ground control is the.scie.ce.of studying and controlling the.be.avior of rock strata in re.ponse.to mining *** control-re.ate. re.e.rch has se.n significant advance.e.ts ove. the.last 36 ye.rs,and the.e.accomplishme.ts are.we.l docume.te. in the.proce.dings of the.annual Inte.national Confe.e.ce.on Ground Control in Mining(ICGCM)[1].The.ICGCM is a forum to promote.close. communication among re.e.rche.s,consultants,re.ulators,manufacture.s,and mine.ope.ators to e.pe.ite.solutions to ground control proble.s in mining[2–8].Fundame.tal re.e.rch and advance.e.ts in ground control scie.ce.de.ine.the.ce.tral core.of the.confe.e.ce.*** information to mine.ope.ators is a priority,as the.confe.e.ce.goal is to offe. solution-orie.te. *** addition,the.confe.e.ce.has include. innovative.te.hnologie. and ide.s in mining-re.ate. fie.ds such as e.ploration,ge.logy,and surface.and unde.ground *** ne. ground control te.hnologie. and de.ign standards adopte. by the.mining industry we.e.first discusse. at ***,this confe.e.ce.is re.ognize. as the.be.t forum for introducing ne. ground control-re.ate. re.e.rch and products.

关键词： Gue.t controlling e.ploration re.ponse surface forum strata ide.s

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Gue.t e.itorial-spe.ial issue.on ground control in mining in 2019

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Inte.national Journal of Mining Scie.ce.and Te.hnology 2020年第1期30卷 1-2页

作者： Michae. M.Murphy Te. Kle.e.ti heather lawson Brije. Mishra Kyle.Pe.ry Pittsburgh Mining Re.e.rch Division NIOSHPittsburghPA 15228USA Spokane.Mining Re.e.rch Division NIOSHSpokaneWA 99207USA Mining e.gine.ring West Virginia UniversityMorgantownWV 26506USA Mining&Nucle.r e.gine.ring Missouri S&TRollaMO 65409USA

Ground control is the.scie.ce.of studying and controlling the.be.avior of rock strata in re.ponse.to mining ***-control-re.ate. re.e.rch has se.n significant advance.e.ts ove. the.last 39 ye.rs,and the.e.accomplishme.ts are.we.l docume.te. in the.proce.dings of the.annual Inte.national Confe.e.ce.on Ground Control in Mining(ICGCM)[1].The.ICGCM is a forum to promote.close. communication among re.e.rche.s,consultants,re.ulators,manufacture.s,and mine.ope.ators to e.pe.ite.solutions to ground control proble.s in mining[2–7].Fundame.tal re.e.rch and advance.e.ts in ground control scie.ce.de.ine.the.ce.tral core.of the.confe.e.ce.*** information to mine.ope.ators is a priority,as the.confe.e.ce.goal is to offe. solutions-orie.te. *** addition,the.confe.e.ce.has include. innovative.te.hnologie. and ide.s in miningre.ate. fie.ds such as e.ploration,ge.logy,and surface.and unde.ground mining in all *** ne. ground control te.hnologie. and de.ign standards adopte. by the.mining industry we.e.first discusse. at ***,this confe.e.ce.is re.ognize. as the.be.t inte.national forum for introducing ne. groundcontrol-re.ate. re.e.rch and products.

关键词： ope.ators close. accomplishme.t

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