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【判断题】
注浆堵水起到封堵补给水源和导水通道的作用,以达到减少矿井涌水量的目的。
A. 对
B. 错
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相关试题
【判断题】
导水裂隙带是指开采煤层上方一定范围内的岩层发生垮落和断裂,产生裂缝,且具有导水性的岩层范围。
A. 对
B. 错
【判断题】
相邻矿井的分界处,应当留防隔水煤(岩)柱。矿井以断层分界的,应在断层一侧留有防隔水煤(岩)柱。
A. 对
B. 错
【判断题】
矿井最大涌水量是指矿井开采期间,正常情况下矿井涌水量的高峰值。
A. 对
B. 错
【判断题】
老窑水以静贮量为主,一旦发生突水,可以在短时期内造成大量的水突入矿井,往往可能造成较大的灾害。
A. 对
B. 错
【判断题】
矿井井口和工业场地内建筑物的标高,应当高于当地历年最高洪水位。
A. 对
B. 错
【判断题】
充水水源和充水通道是矿井充水的两个必要条件。
A. 对
B. 错
【判断题】
矿井最大涌水量是指透水时矿井涌水量的高峰值。
A. 对
B. 错
【判断题】
在煤矿井下透水事故的抢救中,首先要通知泵房人员,要将水仓水位降到最低程度,以争取较长的缓冲时间。
A. 对
B. 错
【判断题】
矿井透水主要有天然通道和人为通道两种。
A. 对
B. 错
【判断题】
采空区冒落裂隙带是矿井透水的主要人为通道。
A. 对
B. 错
【判断题】
水闸门构筑后必须经常保持开关方便。
A. 对
B. 错
【判断题】
有严重水患,未采取措施的,必须立即停止生产,排除隐患。
A. 对
B. 错
【判断题】
接近含水层、导水断层、溶洞和导水陷落柱时可以不进行探水。
A. 对
B. 错
【判断题】
探放水钻孔进时发现有透水预兆必须停止钻进,立即拔出钻杆。
A. 对
B. 错
【判断题】
探放水时必须撤出探放水点以下受水威胁的所有人员。
A. 对
B. 错
【判断题】
严禁在水体下开采急倾斜煤层。
A. 对
B. 错
【判断题】
当放水钻孔流量突然变小或突然断水,表明水基本放净。
A. 对
B. 错
【判断题】
遇高压水顶钻杆时,应将钻杆固定,并记录其深度,并加速钻进。
A. 对
B. 错
【判断题】
由于矿井水的影响,可能造成煤层顶板淋水量加大,会使巷道内空气的湿度增加,但不会影响工人身体健康。
A. 对
B. 错
【判断题】
矿井发生透水事故撤退迷失行进方向时,遇险人员应朝着有风流通过的上山巷道方向撤退。
A. 对
B. 错
【判断题】
接近或接触地表水体的断层, 水性强,往往成为矿井突水的导水通道。
A. 对
B. 错
【判断题】
煤矿企业、矿井应当配备防治水专业技术人员,不—定建立专门的探放水作业队伍。
A. 对
B. 错
【判断题】
当煤矿发生突水和煤与瓦斯突出时,煤矿应在1年内重新编制矿井生产地质报告。
A. 对
B. 错
【判断题】
矿井正常涌水量,是指矿井开采期间单位时间内流人矿井的水量。
A. 对
B. 错
【判断题】
水文地质条件复杂、极复杂的矿井,应当在井底车场周围设置防水闸门,或者在正常排水系统基础上安装配备排水能力不小于最大涌水量的潜水泵排水系统。
A. 对
B. 错
【判断题】
相邻矿井的分界处,应当留设防隔水煤(岩)柱.
A. 对
B. 错
【判断题】
矿井最大涌水量,是指矿井开采期间正常情况下矿井涌水量的高峰值。
A. 对
B. 错
【判断题】
探放水钻孔必须安装孔口套管,煤巷中探放老空积水的止水套管长度不得小于10m。
A. 对
B. 错
【判断题】
井下探放水应当使用专用的探放水钻机。
A. 对
B. 错
【判断题】
套管固结后必须进行耐压试验,试验时,压力不得低于设计水头压力,稳压10min以上即为合格。
A. 对
B. 错
【判断题】
煤矿在每年雨季来临前要进行1次水害救灾演练。
A. 对
B. 错
【判断题】
井下探水钻孔孔径一般不得小于75mm。
A. 对
B. 错
【判断题】
矿井井口标高低于当地历年最高洪水位的,应当采取修筑堤坝、沟渠等防排水措施。
A. 对
B. 错
【判断题】
探水前,应当确定探水线并将其绘制在采掘工程平面图上。
A. 对
B. 错
【判断题】
在打钻地点或其附近要安设专用电话。
A. 对
B. 错
【判断题】
在预计水压大于0.1MPA的地点探水时,要预先固结套管,套管口安装闸阀。
A. 对
B. 错
【判断题】
煤炭企业、煤矿应当编制本单位防治水中长期规划(5年)和年度计划,并组织实施。煤矿防治水应当做到“一矿一策、一面一策”,确保安全技术措施的科学性、针对性和有效性。
A. 对
B. 错
【判断题】
原则上不在煤层中探放水压高于1MP A的陷落柱水。
A. 对
B. 错
【判断题】
水文地质类型复杂、极复杂的煤矿,还应当设立专门的防治水机构、配备防治水副总工程师。
A. 对
B. 错
【判断题】
小型煤矿发生60m3/h以上的突水,应当将突水情况及时上报所在地煤矿安全监察机构和地方人民政府煤炭行业主管部门。
A. 对
B. 错
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How does a zone pair handle traffic if the policy de fination of the zone pair is missing?___
A. It inspects all traffic.
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default how does a zone based firewall handle traffic to add from the self zone?___
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Refer to the exhibit, A Network Secur ity administrator check the ASa firewall NAT policy table rith show nat command, which statement is fails?___
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How can you mitigate attacks in which the attacker attaches more than one vLan tag to a packet?___
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E. nable transparent VTP on the switch
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Which technology can you implement to centrally mitigate potential threats when users on your network download files that might be malicious?___
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What is the most common implementation of PaT in a standard networked environment?___
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You are configuring a NAT rule on a Cisco ASA ,Which description of a mapped interface is true?___
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Which description of the use of a private key is true ?___
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Which command do you enter to verify the status and settings of an iKE Phase 1 tunnel?___
A. show crypto ipsec as output
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E. xpress
F. orwarding
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choose five___
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B. DES————————insercure
C. SDES———————legacy
D. SHA-1———————legacy
E. HMAC-MD5—————legacy
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Which two characteristics of symmetric encryption are true?___
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which two characteristics of PVLAN are true?___
A. Promiscuous porta can communicate with PVLAN ports.
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What are two options for running Cisco SDM?___
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Drag the recommendation on the left to the Cryptographic algorithms on the right, Options will be used more than once.___
A. Avoid——————————————DES,MD5
B. Legacy——————————————SDES,SHA1,HMAC-MD5
【多选题】
Which two are valid types of vLans using PVLANS ?___
A. Community VLAN
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Which two commands are used to implement Resilient lOS Configuration ___
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Which two default settings for port security are true ?___
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C. Violation is Shutdown
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Which two are characteristics of RADIUS?___
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B. Uses TCP port 49
C. Uses UDP port 49
D.
E. ncrypts only the password between user and server
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When setting up a site-to-site VPN with PSK authentication on a Cisco router, which two elements must be configured under crypto map?___
A. pfs
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When using the Adaptive Security Device Manager(ASDM), which two options are available to add a new root certificate?___
A. Install from SFTP server
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Which two SNMPv3 services support its capabilities as a secure networ k manage protocol? ___
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Which two statements about routed firewall mode are true ?___
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Which two statements describe DHCP spoofing attacks?___
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B. They can access most network devices
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D. They protect the identity of ti attacker by masking the DHCP address
E. They can physically modify the network gateway
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Which two types of VLANs using PVLANs are valid?___
A. isolated
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E. community
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