Query：
学者姓名：高文学
Refining：
Year
Type
Indexed by
Source
Complex
Co-Author
Language
Clean All
Abstract ：
The eccentric non-coupled explosive loading structure is widely present in engineering rock blasting. The mechanism of its influence on the blasting effect and energy utilization still needs in-depth research. This paper establishes a theoretical model of peak pressure on the borehole wall for the eccentric non-coupled explosive loading structure and uses the ANSYS/LS-DYNA numerical simulation method to study the influence law of different radial non-coupling coefficients K on the damage characteristics of the rock mass. It also quantitatively analyzes the damage spatial distribution characteristics by combining the fractal theory. Finally, the theoretical and numerical analysis results are verified through field tests. The research results show: (1) The pressure distribution on the borehole wall of the eccentric loading structure is significantly asymmetric, and the pressure difference between the coupled side and the non-coupled side increases with the increase in K value; the error between theoretical calculations and numerical simulation results is less than 10%. (2) As the K value increases from 1.6 to 4.0, the damage areas and crack numbers of both loading structures decrease, but the eccentric loading structure always maintains a larger damage range on the coupled side. (3) Based on the fractal theory analysis, when K = 3.4-4.0, the rock mass damage spatial distribution is the most uniform, the standard deviation is the smallest, and the energy utilization efficiency is the highest. (4) The field test verification shows that when K = 3.75, the pre-splitting effect is the best, the half-hole rate reaches 85.7%, the wall surface flatness is controlled within +/- 5 cm, and compared with traditional methods, the cost is saved by 7% and the efficiency is increased by 45%. The research results provide an important theoretical basis and reference for the engineering application of the eccentric non-coupled loading structure.
Keyword ：
rock mass damage rock mass damage blasting effect blasting effect peak pressure peak pressure fractal theory fractal theory eccentric uncoupling eccentric uncoupling
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Ma, Ashun , Li, Zhuo , Wu, Yongbo et al. Study on pressure distribution and damage fractal characteristics of eccentric uncoupled structures [J]. | ENGINEERING RESEARCH EXPRESS , 2025 , 7 (3) . |
| MLA | Ma, Ashun et al. "Study on pressure distribution and damage fractal characteristics of eccentric uncoupled structures" . | ENGINEERING RESEARCH EXPRESS 7 . 3 (2025) . |
| APA | Ma, Ashun , Li, Zhuo , Wu, Yongbo , Zhang, Xiaojun , Gao, Wenxue . Study on pressure distribution and damage fractal characteristics of eccentric uncoupled structures . | ENGINEERING RESEARCH EXPRESS , 2025 , 7 (3) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Blasting excavation of rock masses under high in-situ stress often encounters difficulties in rock fragmentation and a high boulder rate. To gain a deeper understanding of this issue, the stress distribution of rock masses under dynamic and static loads was first studied through theoretical analysis. Then, the ANSYS/LS-DYNA software was employed to simulate the blasting crack propagation in rock masses under various in-situ stress conditions. The fractal dimension was introduced to quantitatively analyze the influence of in-situ stress on the distribution of blasting cracks. The results indicate that in-situ stress primarily affects crack propagation in the later stages of the explosion, while crack initiation and propagation in the early stages are mainly driven by the explosion load. In-situ stress significantly influences the damage area and fractal dimension of cut blasting. Under hydrostatic in-situ stress, as the in-situ stress increases, the damage area and fractal dimension of blasting cracks gradually decrease. Under non-hydrostatic in-situ stress, when the principal stress difference is small, in-situ stress promotes the damage area and fractal dimension of the surrounding rock, enhancing rock fragmentation. However, when the principal stress difference is large, in-situ stress inhibits the damage area and fractal dimension of the surrounding rock, hindering effective rock breaking.
Keyword ：
in-situ stress in-situ stress blasting crack blasting crack fractal dimension fractal dimension cut blasting cut blasting
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wu, Yongbo , Zhang, Xiaojun , Li, Zhuo et al. Effects of In-Situ Stress on Damage and Fractal during Cutting Blasting Excavation [J]. | FRACTAL AND FRACTIONAL , 2024 , 8 (8) . |
| MLA | Wu, Yongbo et al. "Effects of In-Situ Stress on Damage and Fractal during Cutting Blasting Excavation" . | FRACTAL AND FRACTIONAL 8 . 8 (2024) . |
| APA | Wu, Yongbo , Zhang, Xiaojun , Li, Zhuo , Gao, Wenxue , Xu, Zehui , Zhang, Yifeng et al. Effects of In-Situ Stress on Damage and Fractal during Cutting Blasting Excavation . | FRACTAL AND FRACTIONAL , 2024 , 8 (8) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Although in-situ stress significantly affects tunnel rock mass excavation blasting, the crack propagation law of the rock mass under both in-situ stress and cyclic blasting load has not been adequately evaluated. The blasting failure mechanism of rock mass and the cumulative damage evolution effect of cyclic blasting load under different ground stress conditions are systematically studied herein through theoretical analyses, laboratory tests, and numerical analyses. First, the Riedel-Hiermaier-Thoma (RHT) constitutive model is modified and calibrated, and its reliability is improved via an indoor split Hopkinson pressure bar splitting test. Second, the blasting failure analysis model of the dynamic and static load coupling field is established and verified via numerical simulation. Finally, a numerical simulation of the smooth blasting excavation of a rock tunnel is conducted, and the blasting failure mode of a rock tunnel subjected to ground stress is discussed. Notably, the modified and calibrated RHT model can adequately simulate dynamic crack propagation in limestone specimens. Due to the effect of ground stress, the maximum principal stress side is the most favourable direction for blasting crack propagation. The direction of blasting crack propagation is mainly determined by the loading conditions of ground stress, and the number of blasting cycles does not significantly affect the law of rock crack propagation. Smooth blasting during rock tunnel excavation can effectively reduce the dynamic response of surrounding rock in the unexcavated area. Optimizing the cutting-hole and delayed-blasting parameters can improve the blasting quality of tunnel rock mass under in-situ stress.
Keyword ：
Tunnel rock mass Tunnel rock mass Smooth blasting Smooth blasting Cycle blasting Cycle blasting Blasting failure Blasting failure Ground stress Ground stress
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Zhuo , Hu, Yu , Wang, Genzhong et al. Study on cyclic blasting failure characteristics and cumulative damage evolution law of tunnel rock mass under initial in-situ stress [J]. | ENGINEERING FAILURE ANALYSIS , 2023 , 150 . |
| MLA | Li, Zhuo et al. "Study on cyclic blasting failure characteristics and cumulative damage evolution law of tunnel rock mass under initial in-situ stress" . | ENGINEERING FAILURE ANALYSIS 150 (2023) . |
| APA | Li, Zhuo , Hu, Yu , Wang, Genzhong , Zhou, Min , Hu, Wangjing , Zhang, Xiaojun et al. Study on cyclic blasting failure characteristics and cumulative damage evolution law of tunnel rock mass under initial in-situ stress . | ENGINEERING FAILURE ANALYSIS , 2023 , 150 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The dynamic characteristics of the filling body are the key parameters for designing the filling ratio and evaluating the stability of an underground stope. The different environment (water-bearing state) of the filling body in the underground stope exerts a complex impact on the mechanical behavior of the filling body. Therefore, six groups of cemented filling body specimens with different states were formed and subjected to dynamic uniaxial impact tests. The effects of water content on the mechanical properties, fractal dimension, and deformation damage characteristics of the cemented backfill under dynamic load were analyzed in depth, and a dynamic damage constitutive model that considers water damage and the compaction stage was established. The results indicate the following: (1) Due to the change of the specimen from the dry state to the water saturation state, the dynamic compressive strength of the cemented filling body decreases from 5.03 Mpa to 1.79 Mpa; however, the ductility of the specimen generally increases, and the filling body specimens with different water contents mainly exhibit tensile failure. (2) There is a significant nonlinear relationship between the water content and the fractal dimension D-b of the cemented backfill specimen, and the growth rate of the fractal dimension D-b tends to slow down with the increase in the water content. (3) From the energy evolution perspective, the water content of the specimen exerts a significant effect on the elastic deformation and failure stage of the stress-strain curve, and the slope of the dissipated energy-strain curve decreases with the increase in water content. (4) Based on the Weibull distribution and damage theory, a statistical damage constitutive model of cemented backfill was established, and it was compared with the experimental curve to verify the rationality of the model. Therefore, the relationship between stress and damage and the strain curves is discussed, and it is inferred that the damage evolution curve of cemented backfill is a typical S-shaped curve that exhibits a stable development-rapid increase-tending to be gentle. This study can provide a theoretical reference for further understanding the dynamic behavior and stability of backfill under different water conditions.
Keyword ：
cemented filling body cemented filling body moisture content moisture content energy evolution energy evolution constitutive model constitutive model damage characteristics damage characteristics
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Hu, Yu , Li, Zhuo , Su, Yawen et al. Analyzing the Energy and Damage Constitutive of Cemented Backfill with Different Water Content under Dynamic Load [J]. | MATERIALS , 2023 , 16 (16) . |
| MLA | Hu, Yu et al. "Analyzing the Energy and Damage Constitutive of Cemented Backfill with Different Water Content under Dynamic Load" . | MATERIALS 16 . 16 (2023) . |
| APA | Hu, Yu , Li, Zhuo , Su, Yawen , Wu, Yongbo , Li, Xiaoshuai , Gao, Wenxue et al. Analyzing the Energy and Damage Constitutive of Cemented Backfill with Different Water Content under Dynamic Load . | MATERIALS , 2023 , 16 (16) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
At present, the blasting theory of high and steep rock slope mainly focuses on flat terrain, ignoring the influence of micro-terrain boundary factors on blasting effect, which leads to excessive blasting energy and affects the stability of slope. Therefore, based on the theory of multilateral boundary rock blasting, this paper deduces the calculation formula of blasting charge for high and steep rock slope under multilateral boundary conditions, and verifies it with field test. The results show that: (1) The multilateral boundary charge calculation formula directly includes micro-topography boundary conditions and blasting effect, and the rock blasting theory is based on the interaction of blasting energy provided by explosives and potential energy in medium, which effectively improves the energy utilization rate of explosives. (2) The influence of surplus blasting energy on the surrounding environment under different boundary conditions is controlled, and the explosive explosion effect is effectively controlled, so that a stable high and steep slope of open pit mine is formed after blasting.
Keyword ：
Multilateral boundary Multilateral boundary Micro-topography Micro-topography High and steep slope High and steep slope Blasting charge Blasting charge
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, Junkai , Gao, Wenxue , Hao, Xiangjun et al. Multilateral Boundary Blasting Theory of High and Steep Slope in Open Pit Mine and Its Application [J]. | PROCEEDINGS OF THE 8TH INTERNATIONAL CONFERENCE ON CIVIL ENGINEERING , 2022 : 347-357 . |
| MLA | Chen, Junkai et al. "Multilateral Boundary Blasting Theory of High and Steep Slope in Open Pit Mine and Its Application" . | PROCEEDINGS OF THE 8TH INTERNATIONAL CONFERENCE ON CIVIL ENGINEERING (2022) : 347-357 . |
| APA | Chen, Junkai , Gao, Wenxue , Hao, Xiangjun , Wei, Zheng , Zhang, Xiaojun , Liu, Zhaochen . Multilateral Boundary Blasting Theory of High and Steep Slope in Open Pit Mine and Its Application . | PROCEEDINGS OF THE 8TH INTERNATIONAL CONFERENCE ON CIVIL ENGINEERING , 2022 , 347-357 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
一种拉杆式装药间隔器及其使用方法，涉及爆破技术领域，其结构包括伸缩套筒、顶拉杆、U形卡扣、弹性柱状间隔器，所述的伸缩套筒为多段直径不同的PVC套筒，每段套筒上部均设有固定开关，外侧均有刻度，最外部套筒底端向外凸出一段空心圆管；所述的顶拉杆包括柱状外壳、轴槽、转轴、轴卡、锁定结构、卷筒、钢绳、复位弹簧，转轴安放在柱状外壳的轴槽内，轴卡、卷筒及复位弹簧固定在转轴上，锁定结构安装在柱状外壳的滑道内。使用时，根据炮孔长度调节伸缩套筒长度，将U形卡扣的锁头安放在间隔器底盘卡槽内，再将间隔器安放在伸缩套筒上，通过锁定结构制动转轴后，向外拉伸顶拉杆，可使弹性柱状间隔器变形膨胀卡在炮孔内，形成间隔段。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李小帅 , 高文学 , 洪政 et al. 一种拉杆式装药间隔器及其使用方法 : CN202110588969.5[P]. | 2021-05-28 . |
| MLA | 李小帅 et al. "一种拉杆式装药间隔器及其使用方法" : CN202110588969.5. | 2021-05-28 . |
| APA | 李小帅 , 高文学 , 洪政 , 徐赫 , 于伟杰 , 刘钊臣 . 一种拉杆式装药间隔器及其使用方法 : CN202110588969.5. | 2021-05-28 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明涉及一种推入式装药间隔器及其使用方法。一种推入式装药间隔器，包括伸缩套筒、手拧螺丝、底管、推杆、弹性间隔器；外套筒在外，内套筒在内，外套筒与内套筒之间通过手拧螺丝固定，外套筒顶端外侧壁对称位置开有凹槽，弹性间隔器塞入底管下端构成配套体，底管上端内侧壁对称位置带有卡扣，将卡扣卡在外套筒凹槽，底管与外套筒连接，推杆放入伸缩套筒内。采用本装置时，携带方便，安装简捷，同时便于控制间隔器与炸药之间的悬空高度。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 洪政 , 高文学 , 李小帅 et al. 一种推入式装药间隔器及其使用方法 : CN202110587896.8[P]. | 2021-05-28 . |
| MLA | 洪政 et al. "一种推入式装药间隔器及其使用方法" : CN202110587896.8. | 2021-05-28 . |
| APA | 洪政 , 高文学 , 李小帅 , 刘钊臣 , 陈军凯 . 一种推入式装药间隔器及其使用方法 : CN202110587896.8. | 2021-05-28 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明涉及一种爆破工程球状空气装药间隔器及间隔装药方法，球状空气间隔装药器，包括爪型束缚装置、提拉卡扣、束缚带、高强度弹性气体球、吊绳、拉绳。高强度弹性气体球安放在爪型束缚装置内，球体在爪型束缚装置外力作用下变形为椭球体，使整个间隔装药器径向最大尺寸小于炮孔直径，爪型束缚装置的每个爪尖设有一个限位孔，束缚带穿在限位孔中，束缚带的两端与提拉卡扣相连，提拉卡扣开关处与束缚装置顶部具有环状吊耳，提拉卡扣开关吊耳连接拉绳，束缚装置吊耳连接吊绳。使用时，通过吊绳将间隔器送入炮孔指定位置，提拉拉绳，将提拉卡扣打开，使高强度弹性气体球由椭球体恢复为圆球体卡在炮孔内，形成空气间隔段。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李小帅 , 高文学 , 张声辉 et al. 一种爆破工程球状空气装药间隔器及间隔装药方法 : CN202110588970.8[P]. | 2021-05-28 . |
| MLA | 李小帅 et al. "一种爆破工程球状空气装药间隔器及间隔装药方法" : CN202110588970.8. | 2021-05-28 . |
| APA | 李小帅 , 高文学 , 张声辉 , 宋肖龙 , 胡宇 , 马家骅 . 一种爆破工程球状空气装药间隔器及间隔装药方法 : CN202110588970.8. | 2021-05-28 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明涉及一种金属露天矿爆堆品位分布测算系统及精准铲装方法，金属露天矿爆堆品位分布测算系统包括远程终端、爆堆品位采集系统、铲斗定位系统、车载移动终端。本发明通过计算机内置的爆堆品位数据库生成软件，将无人机测得的爆堆三维坐标数据与炮孔化验品位进行结合计算，形成爆堆品位数据库，经由远程终端发送至电铲移动终端，通过铲斗定位系统对铲斗斗齿的坐标进行计算，匹配爆堆品位数据库得到每一铲斗矿石品位，并且在铲斗跨越矿岩分界线时通过移动终端提醒电铲司机。解决了金属露天矿山矿石损失与贫化严重问题，提升了铲装作业的精准化程度。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李小帅 , 高文学 , 宋肖龙 et al. 一种金属露天矿爆堆品位分布测算系统及精准铲装方法 : CN202110587836.6[P]. | 2021-05-28 . |
| MLA | 李小帅 et al. "一种金属露天矿爆堆品位分布测算系统及精准铲装方法" : CN202110587836.6. | 2021-05-28 . |
| APA | 李小帅 , 高文学 , 宋肖龙 , 张声辉 , 胡宇 , 刘江超 . 一种金属露天矿爆堆品位分布测算系统及精准铲装方法 : CN202110587836.6. | 2021-05-28 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
一种可拼接聚能水封爆破装置及其使用方法属于爆破技术领域。装置包括装药管与水封管，装药管为空心圆筒管，管内设有吸能层与两个相对的楔形聚能槽，聚能槽顶部设有三角尖锥和对接孔，管壁设有雷管孔，管底设有两个与对接孔相对应的插销；水封管为空心圆筒封闭管，上部设有两个对接孔，下部设有两个插销，管壁开有一个进水孔并配有孔塞；组装时通过插销和对接孔，可完成不同装药段或水封段的对接。本发明利用聚能槽产生的“气楔”作用，能够改善光面爆破效果，有利于减少钻孔数量和炸药消耗量，水封管内的水可有效降低爆破产生的粉尘量，吸能层能够有效减少爆炸能量对围岩的破坏，可以改善超挖问题，提高半孔率。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 高文学 , 李小帅 , 胡宇 et al. 一种可拼接聚能水封爆破装置及其使用方法 : CN202110589015.6[P]. | 2021-05-28 . |
| MLA | 高文学 et al. "一种可拼接聚能水封爆破装置及其使用方法" : CN202110589015.6. | 2021-05-28 . |
| APA | 高文学 , 李小帅 , 胡宇 , 刘江超 , 宋肖龙 . 一种可拼接聚能水封爆破装置及其使用方法 : CN202110589015.6. | 2021-05-28 . |
| Export to | NoteExpress RIS BibTex |
Export
| Results： |
Selected to |
| Format： |
