A method for trenching by self-locking diaphragm wall double-side circulation rotary drilling and then horizontal drilling

Abstract

The application discloses a self-locking wall-connecting double-side circulation rotary drilling and post-lateral drilling and trenching method, which comprises the following steps: sequentially arranging a pipeline fixing frame, a sludge treatment mechanism, a horizontal rotary drilling assembly and a vertical drilling device on a drilling machine from top to bottom; controlling the vertical drilling device to vertically downward drill and dig the soil to form a free section of a vertical wall-connecting wall trench; controlling a rotary motor to drive the horizontal rotary drilling device to outwardly rotate and drill and dig the soil on a horizontal plane to form a semicircular horizontal cantilever plate trench; continuing to control the vertical drilling device to vertically downward drill and dig the soil to form an embedded section of the vertical wall-connecting wall trench; completing the drilling and digging of four vertical wall-connecting wall trenches and corresponding semicircular horizontal cantilever plate trenches; controlling any rotary motor to drive the corresponding horizontal rotary drilling device to outwardly rotate on the horizontal plane, and controlling a corresponding translation assembly to drive the horizontal rotary drilling device to drill and dig the soil on the horizontal plane to the side of a horizontal rotary drilling steel frame to form a rectangular horizontal cantilever plate trench, so that the drilling and digging of the wall-connecting wall trench are realized.

Description

Technical Field

[0001] This invention belongs to the field of diaphragm wall trenching equipment, specifically relating to a method for trenching in a self-locking diaphragm wall by bilateral circulating rotary drilling followed by transverse drilling. Background Technology

[0002] A diaphragm wall is a continuous reinforced concrete wall constructed by excavating a narrow, deep trench along the edge of the foundation on the ground during foundation construction, using mud slurry as a base, cleaning the trench and placing the reinforcing cage, and then pouring underwater concrete section by section using the tremie pipe method. Diaphragm walls are mainly used as water-cutting, seepage-proof, load-bearing, water-retaining structures or as the foundation of buildings.

[0003] Existing trenching technologies mainly include bucket-type and milling wheel-type. Patent CN 110258693A, "A Hydraulic Grab Bucket and Diaphragm Wall Construction Equipment," uses movable buckles and connectors to switch between a hydraulic grab bucket and a double-wheel milling machine, achieving multi-purpose functionality for drilling and excavating diaphragm wall trenches. To enable diaphragm wall construction in low-clearance environments, patent CN114086618A, "A Modular Trenching Device for Diaphragm Wall Construction Underground," modularizes the functional components of the diaphragm wall trenching equipment into milling modules, slurry extraction modules, hoisting modules, and accessory reel modules, which are sequentially connected and laid on a track from front to back. Patent CN115070953A, "Trenching Equipment for Diaphragm Wall Construction in Building Engineering," uses a gantry crane to hoist synchronous milling and hydraulic cutting equipment between two carrier vehicles, preventing the trench holes from collapsing due to lateral pressure caused by the carrier vehicles, thus improving trenching quality and trench stability. Patent No. CN 216108696 U, "A Truss Chain Milling and Stirring Machine for Connecting Walls", and Patent No. CN 115897551 A, "A Continuous Wall Construction Equipment and Construction Method Based on TRD Method Drilling Rig", both involve mounting a chain with multiple milling and stirring heads evenly distributed on a truss with active and passive drive mechanisms at both ends. The active drive mechanism drives the chain with milling and stirring heads to drill and excavate grooves for connecting walls.

[0004] Existing trenching construction methods, such as patent number CN 115288115 A, involve excavating vertical trenches at intervals, followed by using a trenching machine to excavate the soil and rock within the interval trench holes to form a continuous diaphragm wall. Patent number CN 115094915 A, titled "A Trenching Construction Method for Diaphragm Walls in Slightly Weathered Volcanic Rock Geology," involves arranging pilot holes according to requirements in both the initial and closing units. The pilot holes are drilled first, followed by milling of the rock between them to form the trench. During construction, multiple construction units work alternately. After one construction unit completes the drilling of the pilot holes, the rock between adjacent pilot holes in that unit is milled, while another construction unit simultaneously drills pilot holes, achieving a rational combination of drilling and milling in a cyclical alternation trenching method. Patent No. CN 114658050 A, "Construction Method for Trenching Diaphragm Walls Containing Moderately Weathered Rock Strata," adjusts the drilling spacing of the drilling rig to 2 meters, and then uses a double-wheel trenching machine for trenching. During trenching, the two rollers rotate at low speed in opposite directions, and their milling teeth break up the rock strata. The drilled rock debris and mud are discharged to the ground mud station through the sand suction port in the middle of the milling wheels. This cycle is repeated until the final hole and trench are formed. Patent No. CN114687393A, "A Diaphragm Wall Construction Equipment and Construction Method," uses a rotary drilling rig and a grab bucket in a combined cyclic drilling process to excavate diaphragm wall trenches.

[0005] Although existing diaphragm wall trenching machines and trenching methods have achieved diaphragm wall trenching, the following problems still exist: (1) Diaphragm walls require auxiliary equipment for slag removal, such as bucket excavators, which need to be repeatedly raised and lowered in the trench to excavate and remove soil, resulting in low construction efficiency; (2) Existing trenching machines and trenching methods are mainly for vertical diaphragm wall trenching construction methods and cannot achieve the excavation of horizontal diaphragm wall / slab structure trenches in soil and rock; (3) Existing trenching machines and trenching methods cannot form trenches in one go and require trench repair procedures, which affects the low construction efficiency. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by providing a method for creating trenches by horizontal drilling after double-sided cyclic rotary drilling of a self-locking diaphragm wall. This trenching method involves sequentially assembling a mud treatment mechanism, a horizontal rotary drilling assembly, and a vertical drilling device on a drilling rig from top to bottom for drilling vertical wall trenches and horizontal cantilever plate trenches. Specifically, the vertical drilling device uses a matrix of cylindrical drilling assemblies to excavate vertical wall holes to the designed depth of the horizontal cantilever plate and then stops digging. Next, a rotary motor drives the double-sided horizontal rotary drilling device to horizontally drill into the soil to form a semi-circular horizontal cantilever plate hole and then rotates back. Subsequently, the vertical drilling device is activated to continue digging the vertical wall hole to the designed depth, and this cyclical drilling process forms a diaphragm wall hole with a semi-circular horizontal cantilever plate structure. Finally, a horizontal translation motor drives either side of the horizontal rotary drilling device to horizontally drill the array of semi-circular horizontal cantilever plate holes, thus realizing the drilling of diaphragm wall holes with rectangular horizontal cantilever plates within the soil.

[0007] The objective of this invention is achieved through the following technical solutions:

[0008] A method for trenching a diaphragm wall using a double-sided cyclic rotary drilling technique followed by transverse drilling, for excavating diaphragm wall trenches, characterized in that the diaphragm wall trenches include four vertical diaphragm wall trenches located on the outer perimeter of a deep foundation pit, and a horizontal cantilever slab trench located on the side of the vertical diaphragm wall trenches and communicating with them. The trenching method includes the following steps:

[0009] S1: The drilling rig is equipped with, from top to bottom, a pipe fixing frame, a mud handling mechanism, a horizontal rotary drilling assembly, and a vertical drilling device; among which:

[0010] The sludge treatment mechanism includes a mixing device, a crushing device, a sludge suction system, a sludge discharge system, and a grouting system;

[0011] The horizontal rotary drill assembly includes two opposing horizontal rotary drill devices, two rotary translational force components for driving the two horizontal rotary drill devices, and a horizontal rotary drill steel frame for mounting the two horizontal rotary drill devices and the two rotary translational force components. Each rotary translational force component includes a rotary motor and a translational component connected to and fixed to the rotary motor on the horizontal rotary drill steel frame. Both ends of the rotary motor shaft are fixedly connected to the horizontal rotary drill devices and rotatably connected to the horizontal rotary drill steel frame. The rotary motor drives the rotary motor shaft on it to rotate, thereby rotating the horizontal rotary drill devices. The horizontal rotary drill steel frame is a box-shaped space with an opening on one side.

[0012] The vertical drilling device includes a vertical drilling U-shaped fork plate and several cylindrical drill assemblies mounted on the vertical drilling U-shaped fork plate. The vertical drilling U-shaped fork plate consists of a vertical drilling web plate, vertical drill blades disposed on both sides of the vertical drilling web plate, and a vertical drilling steel support vertically welded to the vertical drilling web plate. The cylindrical drill assembly includes two cylinders, several stirring blade assemblies evenly disposed on the surface of the cylinders, and a motor driving the cylinders to rotate. The stirring blade assembly consists of a stirring blade base and stirring blades inclinedly fixed on the stirring blade base. The rotating shaft of the motor passes through the cylinders on both sides and is correspondingly disposed in the rotating shaft hole of the vertical drill blade.

[0013] S2: Position the horizontal rotary drilling device within the box-shaped space of the horizontal rotary drilling steel frame, and control the vertical drilling device to drill vertically downwards into the soil until the designed depth of the horizontal cantilever plate, so as to form the free section of the vertical diaphragm wall trench.

[0014] S3: Stop the vertical drilling device from drilling and control the rotary motor of the rotary translational force assembly to drive the horizontal rotary drilling device to rotate outward on the horizontal plane to drill the soil and form a semi-circular horizontal cantilever trough.

[0015] S4: Rotate the horizontal rotary drilling device back into the horizontal rotary drilling steel frame and stop working, and continue to control the vertical drilling device to drill vertically downwards to the design depth of the vertical diaphragm wall groove to form the embedded section of the vertical diaphragm wall groove;

[0016] S5: Repeat steps S2-S4 until the drilling of the four vertical diaphragm wall grooves and their corresponding semi-circular horizontal cantilever plate grooves is completed.

[0017] S6: Control the rotary motor of any of the rotary translational force components to drive the corresponding horizontal rotary drilling device to rotate outward on the horizontal plane, and use the translation component of the corresponding rotary translational force components to drive the horizontal rotary drilling device to drill and excavate the soil on the side of the horizontal rotary drilling steel frame on the horizontal plane to form the rectangular horizontal cantilever plate groove, thereby realizing the drilling and excavation of the diaphragm wall groove.

[0018] In step S1, the stirring device includes a stirring tank and a stirring mechanism; the stirring tank is provided with a slag suction port, a slag discharge port, and a slurry inlet; the stirring mechanism includes a main gear and several auxiliary gears meshing and driving with the main gear, the main gear is driven by a stirring motor, and a stirring main rotating shaft extending into the stirring tank is coaxially provided on the main gear, and stirring blades are provided on the stirring main rotating shaft; an auxiliary stirring rotating shaft extending into the stirring tank is coaxially provided on the auxiliary gear, and stirring blades are provided on the auxiliary stirring rotating shaft.

[0019] The slag suction system includes a main slag suction pipe, a vertical slag suction branch pipe branching from the suction port of the main slag suction pipe, and a horizontal rotating slag suction branch pipe; the slag suction port of the mixing tank is connected to the main slag suction pipe, and the crushing device is provided between the main slag suction pipe and the suction port; the crushing device includes a blower for suction and a crushing blade for crushing sludge; the suction head of the vertical slag suction branch pipe is connected to the vertical drilling device, and the suction head of the horizontal rotating slag suction branch pipe is connected to the horizontal rotating drilling assembly; each suction head is equipped with a slag suction valve, and the pipe body of the horizontal rotating slag suction branch pipe is a telescopic pipe;

[0020] The grouting system includes a grouting pipe and a grouting pump installed on the grouting pipe. One end of the grouting pipe is connected to the grout inlet on the mixing tank to pump the mud into the mixing tank.

[0021] The slag discharge system includes a slag discharge pipe and a slag discharge pump installed on the slag discharge pipe. One end of the slag discharge pipe is connected to the slag discharge port on the mixing tank to pump the mud and slag in the mixing tank to the ground for collection.

[0022] The slag suction main pipe, the slag discharge pipe, and the grouting pipe are arranged along the pipe fixing frame.

[0023] In step S1, the horizontal rotary drilling device includes a horizontal rotary drilling U-shaped fork plate and a plurality of vertically arranged horizontal rotary drills installed on the horizontal rotary drilling U-shaped fork plate. The horizontal rotary drills include a first horizontal rotary drill and a second horizontal rotary drill located on both sides of the horizontal rotary drilling device. A rectangular excavation surface is formed between the first horizontal rotary drill and between the second horizontal rotary drill. The horizontal rotary drilling U-shaped fork plate is composed of two opposing horizontal rotary drill webs, a baffle connected to the same side of the two horizontal rotary drill webs, horizontal rotary drill wing plates disposed at both ends of the horizontal rotary drill webs, a horizontal rotary drill side upright plate disposed on one side of the horizontal rotary drill webs, and a horizontal rotary drill steel support vertically welded to the horizontal rotary drill webs.

[0024] The horizontal rotary drill steel frame consists of a horizontal rotary drill side guard plate, a horizontal rotary drill upper guard plate, a horizontal rotary drill lower guard plate, a horizontal rotary drill left side guard plate, and a horizontal rotary drill right side guard plate. The horizontal rotary drill device and the rotary translational power assembly are both located within the box-shaped space of the horizontal rotary drill steel frame. A rotary motor slide rail is provided on both the horizontal rotary drill upper side guard plate and the horizontal rotary drill lower side guard plate. The two rotary motor slide rails are arranged opposite to each other, and the two ends of the rotary motor shaft are respectively installed in the two rotary motor slide rails.

[0025] The translation assembly includes a translation motor, a reaction arm, a translation screw, a nut, and a support base. The base of the translation motor is fixed to the side of the horizontal rotary drill steel frame, and the translation screw is installed at the output end. One end of the translation screw is rotatably connected to the support base fixed to the lower guard plate of the horizontal rotary drill. The nut that cooperates with the translation screw is installed on the translation screw. The nut is connected to the rotary drill through the reaction arm. The translation motor drives the translation screw to rotate, so that the nut moves along the axial direction of the translation screw, thereby driving the rotary motor shaft to move along the length direction of the rotary motor slide, thus realizing the translation of the horizontal rotary drill device.

[0026] In step S1, the drilling rig is hoisted by the cable of the hoisting assembly, the lower end of which is connected to the pipe fixing frame. The hoisting assembly includes a vehicle platform, a steel column, a tie rod, a hinge shaft, a guide rail, a slider, a steel cantilever beam, a winch motor, and a cable support. The steel column is vertically mounted on the vehicle platform. The upper end of the tie rod is hinged to the upper end of the steel column, and the lower end is hinged to the hinge shaft fixed on the vehicle platform. The guide rail is vertically mounted and fixed along the steel column. The slider is slidably mounted on the guide rail. The steel cantilever beam is fixed to the slider. The winch motor is fixed to the steel cantilever beam, and the cable support is fixed below the steel cantilever beam. The winch motor drives the cable to move up and down in the vertical direction.

[0027] In steps S2 and S4, during the vertical drilling process, the suction valves at the suction heads of all horizontal rotating suction pipes are closed, and the suction valves at the suction heads of the vertical suction pipes are opened to draw the crushed mud from the vertical drilling device into the crushing device. The crushing device further crushes the drawn mud and sends it into the mixing tank for mixing. Meanwhile, the grouting system pumps slurry into the mixing tank in real time to mix with the mud. The slag discharge system pumps the mixture of mud and slurry from the mixing tank to the ground for collection and treatment in real time.

[0028] In step S3, during the process of the rotary translational power component driving the horizontal rotary drilling device to drill outwards in a semi-circular horizontal cantilever slab groove on the horizontal plane, the slag suction valve at the suction head of the vertical slag suction branch pipe is closed, and the slag suction valve at the suction head of the horizontal rotary slag suction branch pipe corresponding to the first horizontal rotary drill is opened, so as to suck the crushed mud and slag from the horizontal rotary drilling device into the crushing device. The crushing device further crushes the sucked mud and slag and sends it into the mixing tank for mixing. Meanwhile, the grouting system pumps slurry into the mixing tank in real time to mix with the mud and slag. The slag discharge system pumps the mud and slag mixture from the mixing tank to the ground for collection and treatment in real time.

[0029] In step S6, during the process of the rotary translational force component driving the horizontal rotary drilling device to drill a rectangular horizontal cantilever plate groove on the side of the horizontal rotary drilling steel frame on the horizontal plane, the suction valve at the suction head of the vertical suction pipe is closed, and the suction valve at the suction head of the horizontal rotary suction pipe corresponding to the second horizontal rotary drill on any of the horizontal rotary drilling devices is opened, so as to suck the crushed mud and slag from the horizontal rotary drilling device into the crushing device. The crushing device further crushes the sucked mud and slag and sends it into the mixing tank for mixing. The grouting system pumps mud slurry into the mixing tank in real time to mix with the mud and slag. The slag discharge system pumps the mud and slag mixture in the mixing tank to the ground for collection and treatment in real time.

[0030] The advantages of this invention are:

[0031] (1) By using a cable, a vertical cylindrical drill, and a cylindrical drill with a horizontal translation and rotation motor, the drilling and excavation of the diaphragm wall hole with a horizontal cantilever plate structure in the soil can be realized.

[0032] (2) Both horizontal cantilever slab structures and vertical diaphragm walls can be drilled in one go without the need for other mechanical assistance, thereby improving construction efficiency and saving construction and equipment costs;

[0033] (3) By first drilling a semi-circular horizontal cantilever plate hole array through a double-sided horizontally movable and horizontally rotating drilling device, and then excavating a rectangular horizontal cantilever plate hole in one go, the drilling and excavation of horizontal cantilever plate holes in the soil can be realized, which can improve the drilling construction efficiency.

[0034] (4) Improve the construction environment and save mud costs by combining vacuum slag suction and mud discharge;

[0035] (5) The soil is crushed twice by the crushing box, which can better discharge the slag from the slot and prevent the slag discharge pipe from being blocked.

[0036] (6) It has both drilling and slag removal functions, and the drilling rig has a high degree of integration, realizing the uninterrupted synchronous operation of drilling and slag removal, reducing construction procedures, saving construction costs, and improving drilling efficiency. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention;

[0038] Figure 2 This is a partial schematic diagram of Embodiment 1 of the present invention;

[0039] Figure 3 This is a cross-sectional view of Embodiment 1 of the present invention;

[0040] Figure 4 yes Figure 3 Sectional view of AA in the middle;

[0041] Figure 5 This is a schematic diagram of the vertical drilling device in Embodiment 1 of the present invention;

[0042] Figure 6 yes Figure 5 Cross-sectional view of the middle section (BB);

[0043] Figure 7 yes Figure 3 CC section view;

[0044] Figure 8 yes Figure 3 Cross-sectional view of DD in the middle;

[0045] Figure 9 yes Figure 3 EE cross-section;

[0046] Figure 10 yes Figure 9 Cross-sectional view of FF in the middle;

[0047] Figure 11 yes Figure 9 Cross-sectional view of GG in China;

[0048] Figure 12 yes Figure 3 Cross-sectional view of HH section;

[0049] Figure 13 yes Figure 3 Section II;

[0050] Figure 14 yes Figure 3 Cross-sectional view of JJ;

[0051] Figure 15 yes Figure 3 Cross-sectional view of KK in China;

[0052] Figure 16 yes Figure 3 Middle LL section view;

[0053] Figure 17 This is a schematic diagram of the construction process of drilling and excavating the self-locking counter-pressure diaphragm wall trench in Embodiment 1 of the present invention;

[0054] Figure 18 yes Figure 17 MM cross-section;

[0055] Figure 19 This is a schematic diagram of the construction process of drilling and excavating the self-locking positive pressure diaphragm wall trench in Embodiment 2 of the present invention;

[0056] Figure 20 yes Figure 19 NN cross-section view;

[0057] like Figures 1-20 As shown in the figure, the labels represent:

[0058] 1. Vertical drilling device; 2. Horizontal rotary drilling assembly; 3. Mixing device; 4. Crushing device; 5. Slag suction system; 6. Grouting system; 7. Slag discharge system; 8. Pipe fixing frame; 9. Lifting assembly;

[0059] 11. Cylindrical drill assembly, 12. Vertical drill U-shaped fork plate, 111. Cylinder, 112. Stirring blade assembly, 113. Motor, 114. Motor shaft, 121. Vertical drill wing plate, 122. Vertical drill web plate, 123. Vertical drill steel support, 124. Shaft hole, 125. Vertical slag suction branch pipe through hole, 1121. Stirring blade base, 1122. Stirring blade;

[0060] 21. Horizontal rotary drilling device; 22. Rotary translational power assembly; 23. Horizontal rotary drilling steel frame;

[0061] 211. Horizontal rotary drill U-shaped fork plate, 2111. Horizontal rotary drill wing plate, 2112. Horizontal rotary drill web plate, 2113. Horizontal rotary drill side plate, 2114. Horizontal rotary drill steel support, 2115. Horizontal rotary drill slag suction branch pipe through hole, 2116. Rotary motor shaft fixing hole, 2117. Baffle;

[0062] 221. Rotary motor; 222. Rotary motor shaft; 223. Fastener; 224. Translation assembly; 2241. Translation motor; 2242. Reaction arm; 2243. Translation lead screw; 2244. Nut; 2245. Support base;

[0063] 231. Side guard plate of horizontal rotary drill, 232. Upper guard plate of horizontal rotary drill, 233. Lower guard plate of horizontal rotary drill, 234. Left side guard plate of horizontal rotary drill, 235. Right side guard plate of horizontal rotary drill, 236. Rotary motor slide rail, 237. Through hole of main slag suction pipe of horizontal rotary drill;

[0064] 31. Mixing tank; 32. Double-layer large blades; 33. Main mixing shaft; 34. Double-layer small blades; 35. Auxiliary mixing shaft; 36. Single-layer small blades; 37. Main gear; 38. Main gear isolation pad; 39. Auxiliary gear; 310. Auxiliary gear isolation pad; 311. Steel cover plate; 312. Mixing motor;

[0065] 41. Crushing box; 42. Middle partition; 43. Connecting pipe; 44. Frame; 45. Fan motor; 46. Fan blades; 47. Crushing blade; 48. Filter screen;

[0066] 51. Main suction pipe, 52. Vertical suction branch pipe, 53. Horizontal rotary suction branch pipe, 54. Telescopic pipe, 55. Suction head, 56. Vertical suction valve, 57. Horizontal rotary suction valve;

[0067] 61. Grouting pipe; 62. Grouting pump;

[0068] 71. Slag discharge pipe; 72. Slag discharge pump;

[0069] 81. Top steel plate, 82. Middle steel plate, 83. Bottom steel plate, 84. Side upright plate, 85. Square through hole, 86. Slag discharge pipe fixing hole, 87. Grouting pipe fixing hole;

[0070] 91. Hoist motor; 92. Fixed shaft; 93. Cable; 94. Cable support; 95. Steel cantilever beam; 96. Slider; 97. Steel column; 98. Guide rail; 99. Hinge shaft; 910. Tie rod; 911. Vehicle platform;

[0071] a. Soil stratum, b. Drilling rig, c. Diaphragm wall trench, c1. Vertical diaphragm wall trench, c2. Free section diaphragm wall trench, c3. Fixed section diaphragm wall trench, c4. Horizontal cantilever slab trench. Detailed Implementation

[0072] The features and other related features of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate understanding by those skilled in the art:

[0073] Example 1: As Figure 1-18 As shown, this embodiment specifically relates to a method for creating a trench by horizontal drilling after bilateral cyclic rotary drilling of a self-locking diaphragm wall. In this embodiment, the trenching method is used to excavate a self-locking counter-pressure diaphragm wall trench. The self-locking counter-pressure diaphragm wall trench includes four vertical diaphragm wall trenches c1 (used for constructing the vertical diaphragm wall) located on the outer perimeter of the deep foundation pit, and a horizontal cantilever slab trench c4 (used for constructing the horizontal cantilever slab) located outside and connected to the vertical diaphragm wall trenches c1. The four vertical diaphragm wall trenches c1 form a rectangular structure. The trenching method specifically includes the following steps:

[0074] (S1) The hoisting assembly 9 and the drilling rig b are installed on the ground of the construction site. The drilling rig is hoisted by the lower end of the cable 93 on the hoisting assembly 9. The drilling rig b includes, from top to bottom, a pipe fixing frame 8, a mud treatment mechanism, a horizontal rotary drilling assembly 2 and a vertical drilling device 1. The mud treatment mechanism includes a mixing device 3, a crushing device 4, a slag suction system 5, a slag discharge system 7 and a grouting system 6.

[0075] like Figure 1 and Figure 2As shown, the lifting assembly 9 includes a vehicle-mounted platform 911, a steel column 97, a tie rod 910, a hinge shaft 99, a guide rail 98, a slider 96, a steel cantilever beam 95, a cable support 94, a winch motor 91, a fixed shaft 92, and a cable 93. The vehicle-mounted platform 911 has movable tracked wheels and is located on the ground. The steel column 97 is vertically mounted at the front end of the vehicle-mounted platform 911. The tie rod 910 provides diagonal bracing reinforcement to the steel column 97. Specifically, the upper end of the tie rod 910 is hinged to the upper end of the steel column 97, and the lower end... The end is hinged to the hinge shaft 99 of the vehicle platform 911; the guide rail 98 is fixed along the steel column 97 to form a vertical track, and the slider 96 is slidably mounted on the guide rail 98 and can slide vertically under the drive of the power mechanism; the steel cantilever beam 95 is fixed to the slider 96, the cable bracket 94 is fixed to the bottom surface of the steel cantilever beam 95, and the winch motor 91 is fixed to the steel cantilever beam 95 via the fixed shaft 92. The winch motor 91 is used to drive the cable 93 and the drilling rig suspended at its lower end to perform lifting and lowering movements. It should be noted that, due to the large self-weight of the drilling rig, the drilling rig can move downward under its own weight without the need for the drill rod to press down as before, and the cable 93 has sufficient length to meet the drilling requirements of the diaphragm wall trench.

[0076] like Figure 1-7 As shown, the vertical drilling device 1 is used for drilling vertical diaphragm wall trenches. It mainly includes several cylindrical drill assemblies 11 and a vertical drill U-shaped fork plate 12 serving as an installation frame. The vertical drill U-shaped fork plate 12 mainly includes a vertical drill web 122 and vertical drill wing plates 121 located on both sides of the vertical drill web 122. Based on the number of cylindrical drill assemblies 11, a vertical drill steel support 123 is vertically welded at the middle position of the vertical drill web 122. The cylindrical drill assembly 11 consists of two cylindrical drills, a motor 113, and a motor shaft 114. In this embodiment, there are four cylindrical drills arranged in a matrix to form a rectangular cutting surface, which forms a rectangular hole during downward cutting. The matrix distribution here refers to the arrangement of cylindrical drills on both sides of the vertical drill steel support 123. The cylindrical drill includes a cylinder 111 and a mixing blade assembly 112 evenly distributed on the surface of the cylinder 111. A centrally located vertical drill steel support 123 is welded or bolted to the housing of a motor 113. The motor shaft 114 of the motor 113 drives the cylinders 111 on both sides to rotate. The end of the motor shaft 114 is supported in the shaft holes 124 of the two side flanges 121. The mixing blade assembly 112 includes a mixing blade base 1121 and a mixing blade 1122. The mixing blade 1122 is installed at an angle with the mixing blade base 1121 fixed, which facilitates the mixing and excavation of the soil. In addition, multiple vertical slag suction branch pipe through holes 125 are opened on the web plate 122 of the vertical drill to allow the suction head 55 of the vertical slag suction branch pipe 52 in the slag suction system 5 to extend into the vertical drill U-shaped fork plate 12 to suck up the excavated mud.

[0077] like Figure 1-3 As shown in Figures 8-11, the horizontal rotary drilling assembly 2 is used for drilling horizontal cantilever slab trenches. It mainly includes two opposing horizontal rotary drilling devices 21, two rotary translational force components 22 for driving the two horizontal rotary drilling devices 21, and a horizontal rotary drilling steel frame 23 for mounting the two horizontal rotary drilling devices 21 and the two rotary translational force components 22. Each horizontal rotary drilling device 21 includes a horizontal rotary drilling U-shaped fork plate 211 and several horizontal rotary drills mounted on the horizontal rotary drilling U-shaped fork plate 211. The horizontal rotary drills are vertically arranged in a matrix. Each horizontal rotary drill includes a first horizontal rotary drill and a second horizontal rotary drill located on either side of the horizontal rotary drilling device 21. The first and second horizontal rotary drills can each form a rectangular excavation surface. Except for the different arrangement (the horizontal rotary drills are vertically arranged, while the cylindrical drilling assembly 11 is horizontally arranged), the structure and function of the horizontal rotary drills are the same as those of the cylindrical drilling assembly 11, and therefore will not be described further here. The horizontal rotary drill U-shaped fork plate 211 consists of two opposing horizontal rotary drill web plates 2112, a baffle 2117 connected to the two horizontal rotary drill web plates 2112 on the same side, horizontal rotary drill wing plates 2111 located at both ends of the horizontal rotary drill web plates 2112 (upper and lower), a horizontal rotary drill side upright plate 2113 located on one side of the horizontal rotary drill web plate 2112, and a horizontal rotary drill steel support 2114 (functioning the same as the vertical drill steel support 123) vertically welded to the horizontal rotary drill web plate 2112. The horizontal rotary drill side upright plate 2113 separates the horizontal rotary drill from the rotary translational motion assembly 22. Furthermore, several horizontal rotary drill slag suction branch pipe through holes 2115 are provided on the horizontal rotary drill web plate 2112 to allow the suction head 55 of the horizontal rotary slag suction branch pipe 53 in the slag suction system 5 to extend into the horizontal rotary drill U-shaped fork plate 211 to suction the excavated slag.

[0078] The horizontal rotary drill steel frame 23 is a box-shaped space with an opening on one side. It consists of a horizontal rotary drill side guard plate 231, a horizontal rotary drill upper guard plate 232, a horizontal rotary drill lower guard plate 233, a horizontal rotary drill left side guard plate 234, and a horizontal rotary drill right side guard plate 235. The horizontal rotary drill device 21 and the rotary translational force assembly 22 are both located within the box-shaped space of the horizontal rotary drill steel frame 23. A rotary motor slide rail 236 is provided on both the upper and lower side guard plates 232 and 233. The two rotary motor slide rails 236 are arranged opposite each other. The two ends of the rotary motor shaft 222 of the rotary motor 221 are respectively installed in the two rotary motor slide rails 236, and the two ends of the rotary motor shaft 222 can move along the length of the two rotary motor slide rails 236. In addition, a horizontal rotary slag suction main pipe through hole 237 is provided on the upper guard plate 232 to facilitate fixing the slag suction main pipe 51 of the slag suction system 5.

[0079] The rotary translational force assembly 22 is used to drive the rotation and translation of the horizontal rotary drilling device 21. The rotary translational power assembly 22 includes a rotary motor 221 and a translational assembly 224 connected to and fixed on the horizontal rotary drill steel frame 23. Both ends of the rotary motor shaft 222 of the rotary motor 221 are fixedly connected to the horizontal rotary drill device 21 and rotatably connected to the horizontal rotary drill steel frame 23. The upper end of the rotary motor shaft 222 of the rotary motor 221 passes through the rotary motor shaft fixing hole 2116 of the upper horizontal rotary drill blade 2111 and enters the rotary motor slide 236 of the upper side guard plate 232 of the horizontal rotary drill. The lower end of the rotary motor shaft 222 of the rotary motor 221 passes through the rotary motor shaft fixing hole 2116 of the lower horizontal rotary drill blade 2111 and enters the rotary motor slide 236 of the lower side guard plate 233 of the horizontal rotary drill. The rotary motor shaft 222 of the rotary motor 221 is fixedly connected to the horizontal rotary drill blade 2111 of the U-shaped fork plate 211 of the horizontal rotary drill by fasteners 223. In this embodiment, the rotary motor 221 drives the rotary motor shaft 222 on it to rotate, thereby driving the corresponding horizontal rotary drilling device 21 to rotate 90 degrees on the horizontal plane, thus forming a 1 / 4 circle horizontal cantilever plate groove. The two horizontal rotary drilling devices 21 can drill the soil to form a semi-circular horizontal cantilever plate groove.

[0080] The translation assembly 224 includes a translation motor 2241, a reaction arm 2242, a translation screw 2243, a nut 2244, and a support base 2245. The base of the translation motor 2241 is fixed to the side of the horizontal rotary drill frame 23, and the output end is equipped with the translation screw 2243. In this embodiment, the translation motor 2241 on one of the rotary translation force assemblies 22 is fixed to the inner side of the left vertical guard plate 234 of the horizontal rotary drill on the horizontal rotary drill frame 23, and the translation motor 2241 on the other rotary translation force assembly 22 is fixed to the inner side of the right vertical guard plate 235 of the horizontal rotary drill on the horizontal rotary drill frame 23. The support base 2245 is installed in the middle of the lower guard plate 233 of the horizontal rotary drill on the horizontal rotary drill frame 23, and one end of the translation screw 2243 (not connected to the translation motor 2241) is rotatably connected to the support base 2245. A nut 2244 is installed on the translation screw 2243, and the nut 2244 is fixedly connected to the rotary motor 221 via the reaction arm 2242. The translation motor 2241 drives the translation screw 2243 to rotate, causing the nut 2244 to move along the axial direction of the translation screw 2243, thereby driving the rotary motor shaft 222 to move along the length direction of the rotary motor slide 236, thus realizing the translation of the horizontal rotary drilling device 21.

[0081] like Figure 1-16 As shown, the sludge treatment mechanism includes a mixing device 3, a crushing device 4, a sludge suction system 5, a sludge discharge system 7, and a grouting system 6.

[0082] The mixing device 3 includes a mixing tank 31 and a mixing mechanism. The mixing tank 31 is fixedly installed on the upper surface of the upper guard plate 232 of the horizontal rotary drill. The mixing mechanism includes a main gear 37 and multiple auxiliary gears 39 meshing with it. The main gear 37 is driven to rotate by the mixing motor 312. The rotating main gear 37 then drives the auxiliary gears 39 to rotate. A mixing main shaft 33 extending into the mixing tank 31 is coaxially arranged on the main gear 37. The mixing main shaft 33 is equipped with mixing blades, which are double-layered large blades 32. Each auxiliary gear 39 is coaxially arranged with a mixing auxiliary shaft 35 extending into the mixing tank 31. The mixing auxiliary shaft 35 is also equipped with mixing blades. The mixing blades on some of the mixing auxiliary shafts 35 are double-layered small blades 34, and the mixing blades on the other part of the mixing auxiliary shafts 35 are single-layered small blades 36. By mixing the mud and sludge in the mixing tank 31, a uniformly mixed sludge can be obtained, which is convenient for discharge. To prevent slurry from seeping into the gearbox containing the main gear 37 and auxiliary gear 39 during mixing, a main gear isolation pad 38 is provided at the connection point between the main mixing shaft 33 and the mixing box 31, and an auxiliary gear isolation pad 310 is provided at the connection point between the auxiliary mixing shaft 35 and the mixing box 31. Figure 2 As shown, a steel cover plate 311 is located on top of the gearbox containing the main gear 37 and the auxiliary gear 39, which is used to connect to the pipe fixing bracket 8. The mixing tank 31 is equipped with a slag suction port, a slag discharge port, and a slurry inlet.

[0083] A slag suction system 5 is connected to the slag suction port of the mixing tank 31. The slag suction system 5 mainly includes a main slag suction pipe 51, a vertical slag suction branch pipe 52, a horizontal rotating slag suction branch pipe 53, and a crushing device 4. One end of the main slag suction pipe 51 is connected to the slag suction port of the mixing tank 31 via the crushing device 4. The other end of the main slag suction pipe 51 (i.e., the suction end) branches into a vertical slag suction branch pipe 52 and a horizontal rotating slag suction branch pipe 53. Figure 2As shown, the vertical suction branch pipe 52 extends into the vertical drilling device 1, and the suction head 55 of the vertical suction branch pipe 52 is close to the cylindrical drill assembly 11 so that it can suck up the soil and mud excavated by cutting. A vertical suction valve 56 is provided at the suction head 55 to control the pipeline opening and closing. The horizontal rotary suction branch pipe 53 extends into the horizontal rotary drilling assembly 2, and the suction head 55 of the horizontal rotary suction branch pipe 53 is close to the horizontal rotary drilling device 21 so that it can suck up the soil and mud excavated by cutting. A horizontal rotary suction valve 57 is provided at the suction head 55 to control the pipeline opening and closing. In order to accommodate the rotation of the horizontal rotary drilling device 21, part of the horizontal rotary suction branch pipe 53 is in the form of a telescopic pipe 54. The sucked sludge is crushed into fine particles by the crushing device 4 and then enters the mixing tank 31. The crushing device 4 mainly includes a crushing tank 41, a partition plate 42, a connecting pipe 43, a frame 44, a blower motor 45, blower blades 46, a crushing blade 47, and a filter screen 48. The partition plate 42 is inclined in the crushing tank 41 to form a ramp that facilitates the flow of sludge. The blower motor 45 is installed on the top plate in the crushing tank 41 via the frame 44. The blower motor 45 has blower blades 46 on its shaft. The high-speed rotating blower motor 45 and blower blades 46 can create negative pressure in the sludge suction pipe 51. A crushing blade 47 is installed at the installation location of the blower motor 45 so that the sucked sludge must be crushed by the crushing blade 47 before entering the mixing tank 31 through the connecting pipe 43. A filter screen 48 is installed at the end face of the blower motor 45 to filter large particles of sludge and prevent sludge from flowing into the mixing tank 31 from the blower motor 45.

[0084] The grout inlet of the mixing tank 31 is connected to a grouting system 6 from the ground. The grouting system 6 mainly includes a grouting pipe 61 and a grouting pump 62. The grouting pipe 61 pumps mud of suitable concentration into the mixing tank 31 through the grouting pump 62 to mix with the mud and sludge sucked up, so that it becomes a fluid and is easy to pump out.

[0085] The slag discharge port of the mixing tank 31 is connected to the slag discharge system 7 on the ground. The slag discharge system 7 includes a slag discharge pipe 71 and a slag discharge pump 72. The lower end of the slag discharge pipe 71 is connected to the slag discharge port of the mixing tank 31 and the port of the slag discharge pipe 71 extends downward to a certain depth to facilitate the pumping out more mud. The slag discharge pipe 71 pumps the evenly mixed mud from the mixing tank 31 to the ground for collection and treatment through the slag discharge pump 72.

[0086] like Figure 1-3As shown in Figures 14-16, the pipe fixing frame 8 has a box-shaped structure, including a top steel plate 81, a middle steel plate 82, a bottom steel plate 83, and several side upright plates 84 connecting the three. Furthermore, a square through hole 85 is provided on the bottom steel plate 83 for the mixing motor 312 to pass through. Additionally, slag discharge pipe fixing holes 86 for the slag discharge pipe 71 and grouting pipe fixing holes 87 for the grouting pipe 61 are provided on the top steel plate 81, middle steel plate 82, and bottom steel plate 83. To prevent pipe swaying during drilling, the pipe fixing frame 8 provides fixation for each passing pipe. It should be noted that four lifting points are provided on the top steel plate 81 for cable 93 connection to ensure stable hoisting of the pipe fixing frame 8.

[0087] (S2) For example Figure 17 As shown, before drilling downwards, the horizontal rotary drilling device 21 is positioned in the box-shaped space of the horizontal rotary drilling steel frame 23; then the vertical drilling device 1 is controlled to drill vertically downwards into the soil layer a until the design depth of the horizontal cantilever slab, so as to form the free section of the vertical diaphragm wall groove c1, the diaphragm wall groove c2.

[0088] During this downward drilling process, the horizontal rotary slag suction valve 57 at the suction head 55 of the (all) horizontal rotary slag suction branch pipe 53 is closed, and the vertical slag suction valve 56 at the suction head 55 of the vertical slag suction branch pipe 52 is opened to suck the crushed mud from the vertical drilling device 1 into the crushing device 4. The crushing device 4 crushes the sucked mud a second time and sends it into the mixing tank 31 for mixing. Meanwhile, the grouting system 6 pumps mud into the mixing tank 31 in real time to mix with the mud. The slag discharge system 7 pumps the mud and mud mixture from the mixing tank 31 to the ground for collection and treatment in real time.

[0089] (S3) such as Figure 17 As shown, the vertical drilling device 1 is stopped and held at that depth. The rotary motors 221 of the horizontal rotary drilling device 21 and the rotary translational motion force assembly 22 are turned on. The two rotary motors 221 drive the corresponding horizontal rotary drilling device 21 (the horizontal rotary drill on one side, i.e. the first horizontal rotary drill) to rotate 90 degrees outward from the horizontal rotary drilling steel frame 23 on the horizontal plane to drill the soil and form a semi-circular horizontal cantilever plate groove c4.

[0090] During this horizontal drilling process, the vertical slag suction valve 56 at the suction head 55 of the vertical slag suction branch pipe 52 is closed, and the horizontal rotary slag suction valve 57 at the suction head 55 of the horizontal rotary slag suction branch pipe 53 (corresponding to the horizontal rotary drill on one side of the horizontal rotary drill device 21) is opened to suck the crushed mud from the horizontal rotary drill device 21 into the crushing device 4. The crushing device 4 crushes the sucked mud a second time and sends it into the mixing tank 31 for mixing. Meanwhile, the grouting system 6 pumps mud into the mixing tank 31 in real time to mix with the mud. The slag discharge system 7 pumps the mud and mud mixture from the mixing tank 31 to the ground for collection and treatment in real time.

[0091] (S4) For example Figure 17 As shown, after drilling the semi-circular horizontal cantilever plate groove c4, the rotary motor 221 of the rotary translational force assembly drives the horizontal rotary drilling device 21 to rotate back 90 degrees and retract into the horizontal rotary drilling steel frame 23; then the vertical drilling device 1 continues to drill to the design depth, forming the embedded section of the vertical diaphragm wall groove c1, the diaphragm wall groove c3.

[0092] During this downward drilling process, the horizontal rotary slag suction valve 57 at the suction head 55 of the (all) horizontal rotary slag suction branch pipe 53 is closed, and the vertical slag suction valve 56 at the suction head 55 of the vertical slag suction branch pipe 52 is opened to suck the crushed mud from the vertical drilling device 1 into the crushing device 4. The crushing device 4 crushes the sucked mud a second time and sends it into the mixing tank 31 for mixing. Meanwhile, the grouting system 6 pumps mud into the mixing tank 31 in real time to mix with the mud. The slag discharge system 7 pumps the mud and mud mixture from the mixing tank 31 to the ground for collection and treatment in real time.

[0093] (S5) For example Figure 17 As shown, repeat steps S2-S4 until the drilling of the four vertical diaphragm wall grooves c and their corresponding semi-circular horizontal cantilever plate grooves c4 is completed.

[0094] (S6) For example Figure 17 As shown, with the horizontal rotary drilling assembly 2 facing the semi-circular horizontal cantilever slab groove c4, the rotary motor 221 of any rotary translational force assembly 22 drives the corresponding horizontal rotary drilling device 21 to rotate outward 90 degrees on the horizontal plane; the translation component 224 of the corresponding rotary translational force assembly 22 drives the horizontal rotary drilling device 21 (the horizontal rotary drill on the other side, i.e., the second horizontal rotary drill) to drill and excavate soil on the side of the horizontal rotary drilling steel frame 23 on the horizontal plane to form a rectangular horizontal cantilever slab groove c4, thereby realizing the drilling and excavation of the diaphragm wall groove c; in addition, as Figure 18 As shown, the top surface of the horizontal cantilever slab groove c4 is level with the bottom surface of the deep foundation pit;

[0095] During this horizontal drilling process, the vertical slag suction valve 56 at the suction head 55 of the vertical slag suction branch pipe 52 is closed, and the horizontal rotary slag suction valve 57 at the suction head 55 of the horizontal rotary slag suction branch pipe 53 (corresponding to the horizontal rotary drill on the other side of the horizontal rotary drill 21) is opened to suck the crushed mud from the horizontal rotary drill 21 into the crushing device 4. The crushing device 4 then crushes the sucked mud a second time and sends it into the mixing tank 31 for mixing. Meanwhile, the grouting system 6 pumps mud into the mixing tank 31 in real time to mix with the mud. The slag discharge system 7 pumps the mud and mud mixture from the mixing tank 31 to the ground for collection and treatment in real time.

[0096] The beneficial effects of this embodiment are:

[0097] (1) By using a cable, a vertical cylindrical drill, and a cylindrical drill with a horizontal translation and rotation motor, the drilling and excavation of the diaphragm wall hole with a horizontal cantilever plate structure in the soil can be realized.

[0098] (2) Both horizontal cantilever slab structures and vertical diaphragm walls can be drilled in one go without the need for other mechanical assistance, thereby improving construction efficiency and saving construction and equipment costs;

[0099] (3) By first drilling a semi-circular horizontal cantilever plate hole array through a double-sided horizontally movable and horizontally rotating drilling device, and then excavating a rectangular horizontal cantilever plate hole in one go, the drilling and excavation of horizontal cantilever plate holes in the soil can be realized, which can improve the drilling construction efficiency.

[0100] (4) Improve the construction environment and save mud costs by combining vacuum slag suction and mud discharge;

[0101] (5) The soil is crushed twice by the crushing box, which can better discharge the slag from the slot and prevent the slag discharge pipe from being blocked.

[0102] (6) It has both drilling and slag removal functions, and the drilling rig has a high degree of integration, realizing the uninterrupted synchronous operation of drilling and slag removal, reducing construction procedures, saving construction costs, and improving drilling efficiency.

[0103] Example 2: This example specifically relates to a method for creating a trench by transverse drilling after bilateral cyclic rotary drilling of a self-locking diaphragm wall, such as... Figure 19 As shown, in this embodiment, the trenching method is used to excavate a self-locking positive pressure diaphragm wall trench. This self-locking positive pressure diaphragm wall trench includes four vertical diaphragm wall trenches c1 located on the outer perimeter of the deep foundation pit, and a horizontal cantilever slab trench c4 located inside and connected to the vertical diaphragm wall trenches c1. The four vertical diaphragm wall trenches c1 form a rectangular structure. The construction method of this self-locking positive pressure diaphragm wall trench is similar to... Figure 17 The construction method for the self-locking counter-pressure diaphragm wall groove shown is the same, and as... Figure 20As shown, the top surface of the rectangular horizontal cantilever slab groove c4 is level with the bottom surface of the deep foundation pit, so it will not be described in detail here.

[0104] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A method for drilling trenches laterally after double-sided cyclic rotary drilling of a diaphragm wall, used for drilling trenches in diaphragm walls, characterized in that... The diaphragm wall trench includes four vertical diaphragm wall trenches located on the outer perimeter of the deep foundation pit, and a horizontal cantilever slab trench located on the side of the vertical diaphragm wall trenches and connected to the vertical diaphragm wall trenches. The trenching method includes the following steps: S1: The drilling rig is equipped with, from top to bottom, a pipe fixing frame, a mud handling mechanism, a horizontal rotary drilling assembly, and a vertical drilling device; among which: The sludge treatment mechanism includes a mixing device, a crushing device, a sludge suction system, a sludge discharge system, and a grouting system; The horizontal rotary drill assembly includes two opposing horizontal rotary drill devices, two rotary translational force components for driving the two horizontal rotary drill devices, and a horizontal rotary drill steel frame for mounting the two horizontal rotary drill devices and the two rotary translational force components. Each rotary translational force component includes a rotary motor and a translational component connected to and fixed to the rotary motor on the horizontal rotary drill steel frame. Both ends of the rotary motor shaft are fixedly connected to the horizontal rotary drill devices and rotatably connected to the horizontal rotary drill steel frame. The rotary motor drives the rotary motor shaft on it to rotate, thereby rotating the horizontal rotary drill devices. The horizontal rotary drill steel frame is a box-shaped space with an opening on one side. The vertical drilling device includes a vertical drilling U-shaped fork plate and several cylindrical drill assemblies mounted on the vertical drilling U-shaped fork plate. The vertical drilling U-shaped fork plate consists of a vertical drilling web plate, vertical drill blades disposed on both sides of the vertical drilling web plate, and a vertical drilling steel support vertically welded to the vertical drilling web plate. The cylindrical drill assembly includes two cylinders, several stirring blade assemblies evenly disposed on the surface of the cylinders, and a motor driving the cylinders to rotate. The stirring blade assembly consists of a stirring blade base and stirring blades inclinedly fixed on the stirring blade base. The rotating shaft of the motor passes through the cylinders on both sides and is correspondingly disposed in the rotating shaft hole of the vertical drill blade. S2: Position the horizontal rotary drilling device within the box-shaped space of the horizontal rotary drilling steel frame, and control the vertical drilling device to drill vertically downwards into the soil until the designed depth of the horizontal cantilever plate, so as to form the free section of the vertical diaphragm wall trench. S3: Stop the vertical drilling device from drilling and control the rotary motor of the rotary translational force assembly to drive the horizontal rotary drilling device to rotate outward on the horizontal plane to drill the soil and form a semi-circular horizontal cantilever trough. S4: Rotate the horizontal rotary drilling device back into the horizontal rotary drilling steel frame and stop working, and continue to control the vertical drilling device to drill vertically downwards to the design depth of the vertical diaphragm wall groove to form the embedded section of the vertical diaphragm wall groove; S5: Repeat steps S2-S4 until the drilling of the four vertical diaphragm wall grooves and their corresponding semi-circular horizontal cantilever plate grooves is completed. S6: Control the rotary motor of any of the rotary translational force components to drive the corresponding horizontal rotary drilling device to rotate outward on the horizontal plane, and use the translation component of the corresponding rotary translational force components to drive the horizontal rotary drilling device to drill and excavate the soil on the side of the horizontal rotary drilling steel frame on the horizontal plane to form the rectangular horizontal cantilever plate groove, thereby realizing the drilling and excavation of the diaphragm wall groove.

2. The method for creating a trench by transverse drilling after bilateral cyclic rotary drilling of a self-locking diaphragm wall according to claim 1, characterized in that... In step S1, the stirring device includes a stirring tank and a stirring mechanism; the stirring tank is provided with a slag suction port, a slag discharge port, and a slurry inlet; the stirring mechanism includes a main gear and several auxiliary gears meshing and driving with the main gear, the main gear is driven by a stirring motor, and a stirring main rotating shaft extending into the stirring tank is coaxially provided on the main gear, and stirring blades are provided on the stirring main rotating shaft; an auxiliary stirring rotating shaft extending into the stirring tank is coaxially provided on the auxiliary gear, and stirring blades are provided on the auxiliary stirring rotating shaft. The slag suction system includes a main slag suction pipe, a vertical slag suction branch pipe branching from the suction port of the main slag suction pipe, and a horizontal rotating slag suction branch pipe; the slag suction port of the mixing tank is connected to the main slag suction pipe, and the crushing device is provided between the main slag suction pipe and the suction port; the crushing device includes a blower for suction and a crushing blade for crushing sludge; the suction head of the vertical slag suction branch pipe is connected to the vertical drilling device, and the suction head of the horizontal rotating slag suction branch pipe is connected to the horizontal rotating drilling assembly; each suction head is equipped with a slag suction valve, and the pipe body of the horizontal rotating slag suction branch pipe is a telescopic pipe; The grouting system includes a grouting pipe and a grouting pump installed on the grouting pipe. One end of the grouting pipe is connected to the grout inlet on the mixing tank to pump the mud into the mixing tank. The slag discharge system includes a slag discharge pipe and a slag discharge pump installed on the slag discharge pipe. One end of the slag discharge pipe is connected to the slag discharge port on the mixing tank to pump the mud and slag in the mixing tank to the ground for collection. The slag suction main pipe, the slag discharge pipe, and the grouting pipe are arranged along the pipe fixing frame.

3. The method for creating a trench by transverse drilling after bilateral cyclic rotary drilling of a self-locking diaphragm wall according to claim 2, characterized in that... In step S1, the horizontal rotary drilling device includes a horizontal rotary drilling U-shaped fork plate and a plurality of vertically arranged horizontal rotary drills installed on the horizontal rotary drilling U-shaped fork plate. The horizontal rotary drills include a first horizontal rotary drill and a second horizontal rotary drill located on both sides of the horizontal rotary drilling device. A rectangular excavation surface is formed between the first horizontal rotary drill and between the second horizontal rotary drill. The horizontal rotary drilling U-shaped fork plate is composed of two opposing horizontal rotary drill webs, a baffle connected to the same side of the two horizontal rotary drill webs, horizontal rotary drill wing plates disposed at both ends of the horizontal rotary drill webs, a horizontal rotary drill side upright plate disposed on one side of the horizontal rotary drill webs, and a horizontal rotary drill steel support vertically welded to the horizontal rotary drill webs.

4. The method for creating a trench by transverse drilling after bilateral cyclic rotary drilling of a self-locking diaphragm wall according to claim 3, characterized in that... The horizontal rotary drill steel frame consists of a horizontal rotary drill side guard plate, a horizontal rotary drill upper guard plate, a horizontal rotary drill lower guard plate, a horizontal rotary drill left side guard plate, and a horizontal rotary drill right side guard plate. The horizontal rotary drill device and the rotary translational power assembly are both located within the box-shaped space of the horizontal rotary drill steel frame. A rotary motor slide rail is provided on both the horizontal rotary drill upper side guard plate and the horizontal rotary drill lower side guard plate. The two rotary motor slide rails are arranged opposite to each other, and the two ends of the rotary motor shaft are respectively installed in the two rotary motor slide rails. The translation assembly includes a translation motor, a reaction arm, a translation screw, a nut, and a support base. The base of the translation motor is fixed to the side of the horizontal rotary drill steel frame, and the translation screw is installed at the output end. One end of the translation screw is rotatably connected to the support base fixed to the lower guard plate of the horizontal rotary drill. The nut that cooperates with the translation screw is installed on the translation screw. The nut is connected to the rotary drill through the reaction arm. The translation motor drives the translation screw to rotate, so that the nut moves along the axial direction of the translation screw, thereby driving the rotary motor shaft to move along the length direction of the rotary motor slide, thus realizing the translation of the horizontal rotary drill device.

5. The method for transverse trenching after bilateral cyclic rotary drilling for self-locking diaphragm walls according to claim 1, characterized in that... In step S1, the drilling rig is hoisted by the cable of the hoisting assembly, the lower end of which is connected to the pipe fixing frame. The hoisting assembly includes a vehicle platform, a steel column, a tie rod, a hinge shaft, a guide rail, a slider, a steel cantilever beam, a winch motor, and a cable support. The steel column is vertically mounted on the vehicle platform. The upper end of the tie rod is hinged to the upper end of the steel column, and the lower end is hinged to the hinge shaft fixed on the vehicle platform. The guide rail is vertically mounted and fixed along the steel column. The slider is slidably mounted on the guide rail. The steel cantilever beam is fixed to the slider. The winch motor is fixed to the steel cantilever beam, and the cable support is fixed below the steel cantilever beam. The winch motor drives the cable to move up and down in the vertical direction.

6. The method for creating a trench by transverse drilling after bilateral cyclic rotary drilling of a self-locking diaphragm wall according to claim 3, characterized in that... In steps S2 and S4, during the vertical drilling process, the suction valves at the suction heads of all horizontal rotating suction pipes are closed, and the suction valves at the suction heads of the vertical suction pipes are opened to draw the crushed mud from the vertical drilling device into the crushing device. The crushing device further crushes the drawn mud and sends it into the mixing tank for mixing. Meanwhile, the grouting system pumps slurry into the mixing tank in real time to mix with the mud. The slag discharge system pumps the mixture of mud and slurry from the mixing tank to the ground for collection and treatment in real time. In step S3, during the process of the rotary translational power component driving the horizontal rotary drilling device to drill outwards in a semi-circular horizontal cantilever slab groove on the horizontal plane, the slag suction valve at the suction head of the vertical slag suction branch pipe is closed, and the slag suction valve at the suction head of the horizontal rotary slag suction branch pipe corresponding to the first horizontal rotary drill is opened, so as to suck the crushed mud and slag from the horizontal rotary drilling device into the crushing device. The crushing device further crushes the sucked mud and slag and sends it into the mixing tank for mixing. Meanwhile, the grouting system pumps slurry into the mixing tank in real time to mix with the mud and slag. The slag discharge system pumps the mud and slag mixture from the mixing tank to the ground for collection and treatment in real time. In step S6, during the process of the rotary translational force component driving the horizontal rotary drilling device to drill a rectangular horizontal cantilever plate groove on the side of the horizontal rotary drilling steel frame on the horizontal plane, the suction valve at the suction head of the vertical suction pipe is closed, and the suction valve at the suction head of the horizontal rotary suction pipe corresponding to the second horizontal rotary drill on any of the horizontal rotary drilling devices is opened, so as to suck the crushed mud and slag from the horizontal rotary drilling device into the crushing device. The crushing device further crushes the sucked mud and slag and sends it into the mixing tank for mixing. The grouting system pumps mud slurry into the mixing tank in real time to mix with the mud and slag. The slag discharge system pumps the mud and slag mixture in the mixing tank to the ground for collection and treatment in real time.

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