A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Slitting roof cutting stoping method used for precontrolled roof house pillar method
The invention provides a slitting roof cutting stoping method used for a precontrolled roof house pillar method, and belongs to the technical field of mining. In the ore inclination direction, propelling is carried out from one end to the other end of a stope, after roof cutting and roof shoring are finished in the stope, downward medium-deep hole stoping of the lower ore body of the stope can becarried out, roof shoring adopts resin anchor rod, steel strip, sprayed concrete and stand column combined shoring, and the precontrolled roof engineering can be finished; the resilience rate of sprayed concrete is smaller than or equal to 13.4%, the 28d-age tensile strength is larger than or equal to 38.5MPa, in the stoping period, pressure and displacement tracing monitoring is carried out on aprecontrolled roof, according to the stoping method, pressure and displacement tracing monitoring is carried out on the precontrolled roof, in-time precast and safety measure taking can be carried outon appearing safety problems, the stoping method can improve the ore recycling rate, the mining loss rate and the ore dilution rate of a house pillar mining method can be reduced, and the economic benefits and the social benefits of an enterprise can be improved.
本发明提供一种用于预控顶房柱法的分条切顶回采方法，属于采矿技术领域，沿矿体倾向方向由采场一端向另一端推进，在采场完成切顶、顶板支护后，进行采场下部矿体的下向中深孔回采；其中，顶板支护采用树脂锚杆、钢带、喷射混凝土、立柱联合支护，完成预控顶工程；喷射混凝土的回弹率≤13.4％，28d龄抗拉强度≥38.5MPa；在回采期间对所述预控顶顶板进行压力、位移跟踪监测。本发明回采方法对预控顶顶板进行压力、位移跟踪监测，能够对出现的安全问题做到及时预报和采取安全措施；本发明回采方法能够提高矿石回收率，降低房柱采矿法的采矿损失率和矿石贫化率，提高企业的经济效益和社会效益。
Slitting roof cutting stoping method used for precontrolled roof house pillar method
The invention provides a slitting roof cutting stoping method used for a precontrolled roof house pillar method, and belongs to the technical field of mining. In the ore inclination direction, propelling is carried out from one end to the other end of a stope, after roof cutting and roof shoring are finished in the stope, downward medium-deep hole stoping of the lower ore body of the stope can becarried out, roof shoring adopts resin anchor rod, steel strip, sprayed concrete and stand column combined shoring, and the precontrolled roof engineering can be finished; the resilience rate of sprayed concrete is smaller than or equal to 13.4%, the 28d-age tensile strength is larger than or equal to 38.5MPa, in the stoping period, pressure and displacement tracing monitoring is carried out on aprecontrolled roof, according to the stoping method, pressure and displacement tracing monitoring is carried out on the precontrolled roof, in-time precast and safety measure taking can be carried outon appearing safety problems, the stoping method can improve the ore recycling rate, the mining loss rate and the ore dilution rate of a house pillar mining method can be reduced, and the economic benefits and the social benefits of an enterprise can be improved.
本发明提供一种用于预控顶房柱法的分条切顶回采方法，属于采矿技术领域，沿矿体倾向方向由采场一端向另一端推进，在采场完成切顶、顶板支护后，进行采场下部矿体的下向中深孔回采；其中，顶板支护采用树脂锚杆、钢带、喷射混凝土、立柱联合支护，完成预控顶工程；喷射混凝土的回弹率≤13.4％，28d龄抗拉强度≥38.5MPa；在回采期间对所述预控顶顶板进行压力、位移跟踪监测。本发明回采方法对预控顶顶板进行压力、位移跟踪监测，能够对出现的安全问题做到及时预报和采取安全措施；本发明回采方法能够提高矿石回收率，降低房柱采矿法的采矿损失率和矿石贫化率，提高企业的经济效益和社会效益。
Slitting roof cutting stoping method used for precontrolled roof house pillar method
一种用于预控顶房柱法的分条切顶回采方法
GAO FENGGANG (author) / WANG ZHENG (author) / CHEN HAIWEN (author)
2020-07-24
Patent
Electronic Resource
Chinese
IPC:
E21C
Bergbau oder Steinbruchbetrieb
,
MINING OR QUARRYING
/
C04B
Kalk
,
LIME
/
E21D
SHAFTS
,
Schächte
/
E21F
Sicherheitsvorrichtungen, Förderung, Auffüllen oder Bergversatz, Rettungswesen, Bewetterung oder Entwässerung in oder von Gruben oder Tunnels
,
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
Roof action in pillar recovery
| Engineering Index Backfile | 1931
Study on roof deformation and control of roof cutting without coal pillar reuse retaining roadway
| DOAJ | 2024
| Engineering Index Backfile | 1942
Pillar extraction with roof bolts
| Engineering Index Backfile | 1951