A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Gob-side entry retaining roadside filling material with adjustable setting, high flow state and high stability and preparation method of gob-side entry retaining roadside filling material
The invention relates to the technical field of mine roadway engineering support, in particular to a gob-side entry retaining roadside filling material with adjustable solidification, high flow state and high stability and a preparation method of the gob-side entry retaining roadside filling material. According to the present invention, the composite auxiliary agent is added, such that the gelling intermediate material obtained by respectively mixing the gelling material, the pumping material, the composite auxiliary agent and the water has characteristics of long-time non-condensation, good pumpability and long standby time, can be solidified within 30 min after mixing filling, can achieve more than 1.2 MPa within 2 h, can achieve more than 4.0 MPa after 24 h, and can finally achieve more than 6.0-15.0 MPa of compressive strength; while good filling and supporting performance is achieved, construction difficulty and labor intensity of workers are greatly reduced, and comprehensive utilization of industrial solid waste such as coal gangue and industrial byproduct gypsum can be achieved.
本发明涉及矿井巷道工程支护技术领域，尤其是具有可调凝高流态高稳定性的沿空留巷巷旁充填材料及其制备方法，经过对胶凝料、泵送料、复合助剂原料成分以及用量的恰当的控制，使胶凝料、泵送料、复合助剂与水分别混合而得的胶凝中间料具有长时不凝、泵送中间料具有可泵性能好，备用工时长的特点，并在混合充填后在30min内凝固，在2h内达到1.2MPa以上、24h后达到4.0MPa以上，最终达到6.0～15.0MPa以上的抗压强度；在达到良好的充填支护性能的同时，大幅度降低施工难度和工人劳动强度，并可实现煤矸石、工业副产品石膏等工业固废的综合利用。
Gob-side entry retaining roadside filling material with adjustable setting, high flow state and high stability and preparation method of gob-side entry retaining roadside filling material
The invention relates to the technical field of mine roadway engineering support, in particular to a gob-side entry retaining roadside filling material with adjustable solidification, high flow state and high stability and a preparation method of the gob-side entry retaining roadside filling material. According to the present invention, the composite auxiliary agent is added, such that the gelling intermediate material obtained by respectively mixing the gelling material, the pumping material, the composite auxiliary agent and the water has characteristics of long-time non-condensation, good pumpability and long standby time, can be solidified within 30 min after mixing filling, can achieve more than 1.2 MPa within 2 h, can achieve more than 4.0 MPa after 24 h, and can finally achieve more than 6.0-15.0 MPa of compressive strength; while good filling and supporting performance is achieved, construction difficulty and labor intensity of workers are greatly reduced, and comprehensive utilization of industrial solid waste such as coal gangue and industrial byproduct gypsum can be achieved.
本发明涉及矿井巷道工程支护技术领域，尤其是具有可调凝高流态高稳定性的沿空留巷巷旁充填材料及其制备方法，经过对胶凝料、泵送料、复合助剂原料成分以及用量的恰当的控制，使胶凝料、泵送料、复合助剂与水分别混合而得的胶凝中间料具有长时不凝、泵送中间料具有可泵性能好，备用工时长的特点，并在混合充填后在30min内凝固，在2h内达到1.2MPa以上、24h后达到4.0MPa以上，最终达到6.0～15.0MPa以上的抗压强度；在达到良好的充填支护性能的同时，大幅度降低施工难度和工人劳动强度，并可实现煤矸石、工业副产品石膏等工业固废的综合利用。
Gob-side entry retaining roadside filling material with adjustable setting, high flow state and high stability and preparation method of gob-side entry retaining roadside filling material
具有可调凝高流态高稳定性的沿空留巷巷旁充填材料及其制备方法
GAO YUSHI (author) / JIA SHAOHUI (author) / LI ZHIHAO (author) / MENG ZHENGYAN (author) / PENG YUNFENG (author) / ZHAO XIANRUI (author) / CHEN JIANZHONG (author) / WANG YONG (author)
2022-05-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Mining gob-side entry retaining high-water filling material and preparation method thereof
| European Patent Office | 2020
Gob-Side Entry Retaining Involving Bag Filling Material for Support Wall Construction
| DOAJ | 2020
| European Patent Office | 2021