A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Weak surrounding rock tunnel excavator bucket tooth
The invention discloses a weak surrounding rock tunnel excavator bucket tooth. The first-in end of an existing bucket tooth is mainly in a sheet-shaped straight knife shape, disturbance of excavation to weak surrounding rock is easily caused, the weak surrounding rock is fragmented on the plane, the collapse range is expanded, a collapse cavity is formed in a three-dimensional mode, local over-excavation is increased, then the use amount and the use time of initial spraying concrete are increased in the working procedure, and the economic benefit and the working efficiency are reduced. The bucket tooth is in a curved-surface groove-shaped concave arc shape and structurally comprises an arc-shaped concave structure, a curved-surface groove-shaped structure, a built-in blade structure, a grid groove, a transition structure, a rectangular connecting structure and a plug pin hole. The method has the beneficial effects that on one hand, disturbance of excavation to weak surrounding rock is weakened, and local overexcavation is controlled; and on the other hand, the use amount and time of initial spraying concrete are reduced, and economic benefits and working efficiency are improved. And meanwhile, early-stage rapid supporting of the weak surrounding rock tunnel is facilitated, the tunnel face overhead time is shortened, and the safety risk is reduced.
一种软弱围岩隧道挖掘机斗齿。现有斗齿的先入端多以片状直刀型为主，容易造成开挖对软弱围岩的扰动，平面上使之发生碎裂化，延展塌落范围，立体上形成塌腔，增大局部超挖，进而在工序上增加初喷混凝土的用量和用时，降低经济效益和工作效率。本发明所述斗齿为曲面槽状内凹圆弧型，其构造包括：弧形内凹结构、曲面槽状结构、内置刀片结构、格槽、过渡结构、矩形连接结构、插销孔。本发明的有益效果在于：一方面减弱开挖对软弱围岩的扰动，控制局部超挖。另一方面减小初喷混凝土的用量和用时，提高经济效益和工作效率。同时利于软弱围岩隧道的早期快速支护，减少掌子面凌空时间，降低安全风险。
Weak surrounding rock tunnel excavator bucket tooth
The invention discloses a weak surrounding rock tunnel excavator bucket tooth. The first-in end of an existing bucket tooth is mainly in a sheet-shaped straight knife shape, disturbance of excavation to weak surrounding rock is easily caused, the weak surrounding rock is fragmented on the plane, the collapse range is expanded, a collapse cavity is formed in a three-dimensional mode, local over-excavation is increased, then the use amount and the use time of initial spraying concrete are increased in the working procedure, and the economic benefit and the working efficiency are reduced. The bucket tooth is in a curved-surface groove-shaped concave arc shape and structurally comprises an arc-shaped concave structure, a curved-surface groove-shaped structure, a built-in blade structure, a grid groove, a transition structure, a rectangular connecting structure and a plug pin hole. The method has the beneficial effects that on one hand, disturbance of excavation to weak surrounding rock is weakened, and local overexcavation is controlled; and on the other hand, the use amount and time of initial spraying concrete are reduced, and economic benefits and working efficiency are improved. And meanwhile, early-stage rapid supporting of the weak surrounding rock tunnel is facilitated, the tunnel face overhead time is shortened, and the safety risk is reduced.
一种软弱围岩隧道挖掘机斗齿。现有斗齿的先入端多以片状直刀型为主，容易造成开挖对软弱围岩的扰动，平面上使之发生碎裂化，延展塌落范围，立体上形成塌腔，增大局部超挖，进而在工序上增加初喷混凝土的用量和用时，降低经济效益和工作效率。本发明所述斗齿为曲面槽状内凹圆弧型，其构造包括：弧形内凹结构、曲面槽状结构、内置刀片结构、格槽、过渡结构、矩形连接结构、插销孔。本发明的有益效果在于：一方面减弱开挖对软弱围岩的扰动，控制局部超挖。另一方面减小初喷混凝土的用量和用时，提高经济效益和工作效率。同时利于软弱围岩隧道的早期快速支护，减少掌子面凌空时间，降低安全风险。
Weak surrounding rock tunnel excavator bucket tooth
一种软弱围岩隧道挖掘机斗齿
YANG LIPENG (author) / LIANG SHOUYUN (author) / YANG LICHENG (author) / LIAO JIAHUAN (author) / ZHU JUNWU (author) / YANG LIHENG (author) / WANG JIANZHEN (author)
2022-07-08
Patent
Electronic Resource
Chinese