12results about How to "Improve excavation efficiency" patented technology

The invention provides a tunnel hard rock non-blasting excavation method. The tunnel hard rock non-blasting excavation method can realize efficient excavation of complete or relatively complete hard rock without adopting large excavation equipment such as a heading machine and the like , and is characterized by comprising the following steps of 1, drilling contour holes along a tunnel face contour line so as to determine a tunnel excavation range, and determining each drilling and grooving position according to the excavation range, then, forming and drilling a plurality of cavity expanding holes in the position close to the positions; 2, drilling a plurality of rows of guide holes between the contour holes and the cavity expanding holes; 3, drilling groove forming holes which are meshed and overlapped with each other at the determined drilling and grooving positions, and finally forming a groove cavity; 4, enabling the cavity expanding holes near the groove cavity to be subjected to impact crushing, and therefore expanding excavation is conducted on the groove cavity; 5, according to a certain excavation sequence, starting from the guide holes close to the expanded and excavated groove cavity, adopting a hydraulic breaking hammer for conducting impact breaking on the guide holes, so that excavation of the rock mass of a main body part is completed; and 6, conducting impact crushing on the contour holes.

The application discloses a vertical shaft rapid excavation equipment, which comprises a base body, a deep pit groove is formed in the top of the base body, a base and a second ring beam are arranged in the deep pit groove, a fixing assembly for positioning the second ring beam is arranged on the top of the base, a positioning frame is fixedly connected to the circumferential inner wall of the second ring beam, a moving groove is formed in one side of the positioning frame, a sliding column is fixedly connected to the bottom inner wall of the moving groove, and a moving block is sleeved with the circumferential outer wall of the sliding column. In the application, the drill bit can be driven to rotate together with the horizontal plate during the circumferential movement of the horizontal plate, the drilling depth and position of the drill bit can be adjusted by starting the hydraulic rod during the drilling of the drill bit, the drilling area of the drill bit is enlarged, the drilling demand of people on the vertical shaft is met, the whole drilling process does not need manual work to go deep into the bottom of the vertical shaft, the safety of the whole equipment is further improved, and the drilling efficiency on the vertical shaft is improved.

This utility model relates to the technical field of pile hole excavation equipment, and discloses a pile driving tool for geotechnical engineering, including a bucket body. A bottom plate is hinged to the bottom of the bucket body, and multiple rotary drilling teeth are fixedly connected to the bottom of the bottom plate. A buckle seat is fixedly connected to one side of the bottom plate, and a buckle seat cleaner is provided on the bottom plate near the buckle seat. The buckle seat cleaner also includes two mounting seats, and a base is fixedly connected between the two mounting seats. The base is fixedly installed on the bottom plate, and a pressure plate is movably connected inside the mounting seat. A push rod is also inserted and connected to one side of the mounting seat, and a push block is fixedly connected to one end of the push rod. The buckle seat cleaner is provided on the bottom plate, and the buckle seat cleaner is composed of mounting seats, pressure plates, push rods, push blocks, etc. With the help of a Y-shaped fixing rod set inside the bucket body, it can automatically flush out and disperse the soil blocking the buckle seat when the bottom plate is closed, so that the upper hook of the unlocking pressure rod mechanism can be properly engaged in the buckle seat, reducing the labor intensity of operation and improving the efficiency of pile hole excavation.

The invention relates to the technical field of pipeline emergency maintenance and repair, in particular to a pipeline leakage flexible plugging fixture system and a pipeline leakage plugging method. The pipeline leakage flexible plugging fixture system comprises a hydraulic excavating vehicle assembly, a mechanical arm assembly and a flexible fixture assembly; one end of the mechanical arm assembly is connected with the hydraulic excavating vehicle assembly, the other end of the mechanical arm assembly is connected with the flexible clamp assembly, and a leakage pipeline is blocked by clamping a flexible clamp. A swing arm frame is installed on the ratchet wheel locking assembly, and the swing arm frame swings in a reciprocating mode through an electric push rod, so that the flexible belt assembly is driven to be curled and tightened for fastening. The pressure adjusting assembly is provided with an air pump, the air pump is controlled to inflate and deflate an air bag on the inner side of the flexible clamp assembly, expansion and contraction of the air bag are achieved, and the tension of the flexible belt assembly is kept stable. Leakage points are detected through the positioning trolley, hydraulic excavation and pipe wall polishing are conducted through the hydraulic excavation vehicle, and dependence on manual operation is reduced. The plugging device has the characteristics of rapidness and convenience in installation and stable plugging performance.

A kind of hydraulic lift of vertical shaft, belong to mine transport vehicle technical field, including flat car, fixed frame, tripod assembly and support frame are sequentially provided on flat car;Fixed frame is horizontally arranged at one end of flat car, support frame is vertically arranged at the other end of flat car, support frame and material contact point height is greater than fixed frame and material contact point height;Triangular frame component includes two triangular frame bodies, two triangular frame bodies are arranged in parallel, and are respectively arranged at the two sides of the length direction of flat car, two triangular frame bodies are provided with the lifting channel steel that can slide, lifting channel steel is connected between flat car with hydraulic cylinder.The height difference of fixed frame, support frame forms material inclination support, cooperate lifting channel steel driven by hydraulic cylinder and slide on triangular frame component, can flexibly adjust the inclination angle and space posture of super-long material, adjust the posture of super-long material to realize the adaptation to cage space, break through the limitation of fixed size of vertical shaft cage.

The application discloses a tunnel slagging method and system, and relates to the technical field of tunnel construction, wherein the tunnel slagging method comprises the following steps: tunneling in the first direction of a subway preset line by a first shield machine from a first working well located in the middle of the subway preset line; tunneling in the second direction of the subway preset line by a second shield machine from a second working well located in the middle of the subway preset line; transporting the slag excavated by the first shield machine to a second vertical belt conveyor located in the second working well, and conveying the slag to the ground by the second vertical belt conveyor; and transporting the slag excavated by the second shield machine to a first vertical belt conveyor located in the first working well, and conveying the slag to the ground by the first vertical belt conveyor. The technical scheme of the application realizes bidirectional excavation and bidirectional slagging of the subway tunnel, greatly improves the efficiency of tunnel excavation, and shortens the construction period compared with the technical scheme of unidirectional excavation and unidirectional slagging.

The invention relates to the field of tunnel construction, in particular to a hard rock tunnel chamber conversion non-explosive construction method based on automatic stress monitoring, which is characterized in that a small-section auxiliary channel is used for jacking into a large-section tunnel, a double-layer primary support arch structure and non-explosive mechanical excavation are adopted, and an automatic stress monitoring technology is combined, so that the tunnel chamber conversion non-explosive construction method is realized. And safe, efficient and environment-friendly tunnel chamber conversion construction is achieved. According to the method, vibration and shock waves caused by blasting construction are avoided, and damage to surrounding rock masses and structures is reduced; the non-explosive mechanical excavation adapts to the hard rock condition, the double-layer primary support structure reduces the arch replacement construction, and the overall efficiency is improved; dust and noise pollution is reduced, and the environment-friendly requirement is met; automatic stress monitoring ensures accurate control of the construction process, and the stability and durability of the tunnel are improved.

The present invention discloses an efficient, self-stabilizing foundation pit support structure and a construction method thereof. The support structure includes a foundation pit continuous wall and a support wall, wherein the foundation pit continuous wall is arranged around the foundation pit, and the foundation pit continuous wall is set as a polygonal structure according to the shape of the foundation pit, and a plurality of support walls are arranged around the outer periphery of the polygonal foundation pit continuous wall. The support frame in the support wall is connected to the steel cage in the foundation pit continuous wall. After the foundation pit continuous wall is poured with concrete, the support wall and the foundation pit continuous wall at the location are formed into an integrated structure, and the thickness of the support wall is the same as that of the foundation pit continuous wall. Beneficial effect: The back pressure effect of the deadweight of the soil above the inclined support wall on the support wall surface is utilized to limit the lifting of the inclined support wall and the deflection and deformation of the foundation pit continuous wall into the foundation pit, that is, the self-stabilizing effect. The conventional in-pit support system can be eliminated, and the efficiency of earth excavation in the foundation pit is greatly improved and the construction period can be significantly saved.

The utility model relates to a cutter head structure optimizing device of a rock tube push bench. The cutter head structure optimizing device comprises a crushing cutter head and a secondary crushing device, the secondary crushing device comprises a crushing arm and a conical crushing bin, the crushing arm is fixed to the back face of the crushing cutter head, crushing strips are annularly arranged on the side, facing the crushing arm, of the conical crushing bin, a muddy water bin is arranged on the back face of the conical crushing bin, and screening holes are formed between the two crushing strips at the bottommost portion of the conical crushing bin and used for allowing gravel muck to enter the muddy water bin. The rock crushing device has the advantages that the crushing arms are arranged on the back face of the crushing cutterhead, the crushing strips are correspondingly arranged on the surface of the conical crushing bin, and when the crushing cutterhead rotates, the crushing arms and the crushing strips squeeze rock fragments to further crush the rock fragments, so that the rock crushing efficiency is improved, and follow-up discharging is facilitated.

The present application relates to a kind of hard rock non-explosive excavation device and method, it includes drill bit, drill pipe and splitting mechanism.Splitting mechanism includes first drive assembly, second drive assembly and expansion assembly, first drive assembly, second drive assembly and expansion assembly are rotationally sleeved on drill pipe, first drive assembly and second drive assembly are connected with expansion assembly, first drive assembly can drive expansion assembly along the radial expansion or shrink of drill pipe, second drive assembly can drive expansion assembly axial movement.When expansion assembly is in expansion state, the maximum vertical distance of the central axis of drill pipe to the outer side of expansion assembly is greater than the diameter of drill bit;When expansion assembly is in shrinkage state, the maximum vertical distance of the central axis of drill pipe to the outer side of expansion assembly is less than or equal to the diameter of drill bit.The whole process will drill, rock breaking, rock falling action together, directly after drilling rock breaking, save equipment conversion time, improve excavation efficiency.

The present invention provides a method for excavating a pilot tunnel with a micro-core soil, and relates to the technical field of underground construction engineering. The method for excavating a pilot tunnel with a micro-core soil comprises the following steps: S1. A small guide tube is set along the top of the pilot tunnel excavation surface, and then grouting is performed in the small guide tube; S2. The pilot tunnel is excavated with a full section, and the micro-core soil is retained in the pilot tunnel at the same time; S3. Initial concrete is sprayed on the pilot tunnel excavation surface, and then a steel frame N2 with a large arch side wall grid is installed in the pilot tunnel; S4. Next, a side wall grid steel frame N3 is installed in the pilot tunnel, and a connecting plate is used to connect the side wall grid steel frame N2 with a large arch and the side wall grid steel frame N3; S5. Concrete is sprayed on the surface of the initial concrete spraying for a second time to a designed thickness. The present invention provides a method for excavating a pilot tunnel with a micro-core soil, which is convenient and quick to install, improves the excavation efficiency, and solves the problem of arch top sinking and low efficiency in step method excavation.

The invention discloses a quality spot check excavation management method, device and equipment for a pipeline circumferential weld and a medium, and relates to the technical field of data processing. According to the method, basic data information of all circumferential welds on a target pipeline is obtained, and a prediction attribute set and an excavation criterion set which are determined in advance and used for circumferential weld quality prediction are obtained; according to the basic data information, determining attribute judgment information of each circumferential weld relative to the prediction attribute set; according to the attribute judgment information and the excavation criterion set, quality risk prediction information of the corresponding circumferential weld is determined; according to the quality risk prediction information, circumferential weld excavation information of the target pipeline is generated, and a target circumferential weld meeting the excavation requirement is determined according to the circumferential weld excavation information. By means of the method, the quality risk of the pipeline circumferential weld is rapidly and accurately evaluated, the target circumferential weld with the high-risk quality risk can be accurately positioned, the judgment accuracy and excavation efficiency of the high-risk circumferential weld are improved, and the excavation cost is reduced.