A method for excavating a trench by rotating and digging with a single side of a self-locking diaphragm wall single-side circulating rotary drill

Abstract

The application discloses a self-locking wall connecting single-side circulation rotary drilling and post-digging horizontal slot forming 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 slot; controlling a rotary power assembly to drive the horizontal rotary drilling device to outwardly rotate and drill and dig the soil on a horizontal plane to form a 1 / 4 circular horizontal cantilever plate slot; continuously controlling the vertical drilling device to vertically downward drill and dig the soil to form an embedded section of the vertical wall connecting wall slot; completing the drilling and digging of four vertical wall connecting wall slots and corresponding 1 / 4 circular horizontal cantilever plate slots; controlling the rotary power assembly to drive the horizontal rotary drilling device to outwardly rotate on the horizontal plane and make the horizontal rotary drilling device move horizontally, so as to drill and dig the 1 / 4 circular horizontal cantilever plate slot into a rectangular horizontal cantilever plate slot, thereby realizing the drilling and digging of the wall connecting wall slot.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of diaphragm wall trenching machine equipment, and particularly relates to a self-locking diaphragm wall single-side circulating rotary drilling and post-excavation trenching method. BACKGROUND

[0002] The underground continuous wall is a continuous reinforced concrete wall built by the method of pouring concrete into the guide pipe in sections after excavating a long and deep trench along the edge of the foundation engineering on the ground with mud protection wall as the premise, and then clearing the trench and placing the reinforcement cage. The underground continuous wall is mainly used as a water interception, seepage prevention, load-bearing, water retaining structure or as the foundation of a building.

[0003] The existing trenching technology mainly includes excavator type and milling wheel type. Patent No. CN 110258693A "Hydraulic grab and underground continuous wall construction equipment" realizes the switching between the hydraulic grab and the double-wheel mill through the movable buckle and the connecting piece, realizes one machine with multiple functions, and drills and excavates the underground continuous wall trench. In order to realize the construction of the diaphragm wall in low clearance, patent No. CN114086618A "Modular milling device for underground diaphragm wall construction" modularizes the functional components of the diaphragm wall trenching equipment into milling modules, pumping modules, winding modules and accessory reel modules, and lays them on the track in sequence from front to back. Patent No. CN115070953A "Trenching equipment for underground continuous wall construction in building engineering" hoists the synchronous milling and hydraulic cutting equipment between the two bearing vehicles through the row frame to prevent the trench hole from being collapsed by the horizontal pressure caused by the bearing vehicle and improve the trenching quality and stability of the trench hole. Patent No. CN216108696U "Truss chain milling earth stirring diaphragm wall machine" and patent No. CN115897551A "Continuous wall construction equipment and construction method based on TRD method drilling machine" both set the chain with evenly distributed milling and stirring heads on the truss with active and passive drive mechanisms at both ends, and drive the chain with milling and stirring heads to drill and excavate the diaphragm wall trench hole through the active drive mechanism.

[0004] The existing slotting construction method adopts interval excavation of vertical slots, and then uses a slotting machine to grab and excavate the rock-soil body in the interval slot hole to form a continuous wall. The patent number CN 115094915 A "Micro-weathered volcanic rock geological underground continuous wall slotting construction method" arranges the hole guide according to the requirements in the first opening unit and the closing unit, drills the hole guide first, and then mills the rock between the hole guides, realizes slotting, and realizes the alternating construction of multiple construction units during construction. After the drilling of the hole guide in one construction unit is completed, the rock between the adjacent hole guides of the construction unit is milled, while the hole guide of another construction unit is drilled, realizing the drilling and milling combined cycle alternating slotting method. The patent number CN 114658050 A "Continuous wall slotting construction method containing medium weathered rock stratum" adjusts the drilling hole distance of the drilling machine to 2 m, and then uses a double-wheel slot milling machine for milling. When milling, the two rollers rotate at low speed in opposite directions, the milling teeth break and crush the rock stratum, and the rock debris and mud pumped out by the milling wheel are discharged to the ground mud station. This is repeated until the final hole is formed. The patent number CN 114687393 A "Continuous wall construction equipment and construction method thereof" realizes the drilling and excavation of the continuous wall slot through the combined cycle of rotary drilling and grab bucket.

[0005] Although the existing continuous wall slotting machine and slotting method realize the slotting of the continuous wall, there are still the following problems: (1) The continuous wall needs auxiliary equipment to discharge the slag, such as the excavator, which needs to be continuously lifted in the slot to excavate and discharge the soil, and the construction efficiency is low; (2) The existing slotting machine and slotting method mainly aim at the vertical continuous wall slotting construction method, and cannot realize the excavation of the horizontal continuous wall / plate structure slot in the rock-soil body, (3) The existing slotting machine and slotting construction method cannot form a slot at one time, and needs a slot repairing process, which affects the construction efficiency. SUMMARY

[0006] The purpose of the present application is to provide a self-locking continuous wall single-side cycle rotary drilling and horizontal excavation slotting method according to the deficiencies of the above-mentioned prior art. The slotting method sequentially sets a mud and slag treatment mechanism, a horizontal rotary drilling assembly, and a vertical drilling device on the drilling machine from top to bottom to drill and excavate the vertical wall slot and the horizontal cantilever plate slot, i.e. the vertical drilling device stops excavating after excavating the vertical wall slot to the design depth of the horizontal cantilever plate by using a matrix-shaped cylindrical drilling assembly; then the horizontal rotary drilling device is driven by a rotary motor to drill and excavate a 1 / 4 circular horizontal cantilever plate slot in the soil body, and rotates back after completion; then the vertical drilling device is started again to continue excavating the vertical wall slot to the design depth, and the drilling and excavation are repeated to form a continuous wall slot with a 1 / 4 circular horizontal cantilever plate structure; finally, the horizontal rotary drilling device is used to horizontally drill and excavate the 1 / 4 circular horizontal cantilever plate slot array to realize the drilling and excavation of the continuous wall slot with a rectangular horizontal cantilever plate in the soil body.

[0007] The technical scheme of the present application is realized by the following technical scheme:

[0008] A self-locking one-side cycle rotating drilling and post-lateral trenching method for diaphragm wall, which is characterized in that the diaphragm wall trench comprises four vertical diaphragm wall trenches arranged outside the four sides of a deep foundation pit and horizontal cantilever plate trenches arranged on the side of the vertical diaphragm wall trenches and communicating with the vertical diaphragm wall trenches, and the trenching method comprises the following steps:

[0009] S1: sequentially arranging a pipeline fixing frame, a sludge treatment mechanism, a horizontal rotating drilling assembly and a vertical drilling device on a drilling machine from top to bottom; wherein:

[0010] The horizontal rotating drilling assembly comprises a horizontal rotating drilling device, a rotating power assembly for driving the horizontal rotating drilling device to rotate and a horizontal rotating drilling steel frame for mounting the horizontal rotating drilling device and the rotating power assembly; the horizontal rotating drilling device comprises a horizontal rotating drilling U-shaped fork plate and a plurality of vertical horizontal rotating drills mounted on the horizontal rotating drilling U-shaped fork plate; the rotating power assembly comprises a rotating motor and a counterforce arm connected to the rotating motor and the horizontal rotating drilling steel frame at both ends, respectively; both ends of a rotating motor shaft of the rotating motor are connected to the horizontal rotating drilling steel frame by penetrating through the horizontal rotating drilling U-shaped fork plate of the horizontal rotating drilling device, wherein the rotating motor shaft is fixedly connected to the horizontal rotating drilling U-shaped fork plate, and the rotating motor shaft is rotatably connected to the horizontal rotating drilling steel frame; the horizontal rotating drilling steel frame has a box-shaped structure with one side open;

[0011] The vertical drilling device comprises a plurality of horizontal cylindrical drilling assemblies arranged to form a rectangular excavation surface;

[0012] S2: making the horizontal rotating drilling device located in the box-shaped space of the horizontal rotating drilling steel frame, controlling the vertical drilling device to vertically drill downward into the soil until the design depth of the horizontal cantilever plate to form a free section of the vertical diaphragm wall trench;

[0013] S3: stopping the vertical drilling device from drilling, and controlling the rotating power assembly to drive the horizontal rotating drilling device to rotate outward in the horizontal plane to drill into the soil to form a 1 / 4 circular horizontal cantilever plate trench;

[0014] S4: making the horizontal rotating drilling device return to the initial state and stop working, and continuing to control the vertical drilling device to vertically drill downward into the soil to the design depth of the vertical diaphragm wall trench to form an embedded section of the vertical diaphragm wall trench;

[0015] S5: repeating steps S2-S4 until the four vertical diaphragm wall slots and their corresponding 1 / 4 circular horizontal cantilever plate slots are drilled and excavated;

[0016] S6: controlling the rotary power assembly to drive the horizontal rotary drilling device to rotate outwardly on the horizontal plane and move laterally to drill and excavate the 1 / 4 circular horizontal cantilever plate slots into rectangular horizontal cantilever plate slots, thereby realizing the drilling and excavation of the diaphragm wall slots.

[0017] In step S1, the drilling machine is hoisted by a cable of a hoisting assembly, and the lower end of the cable is connected to the pipeline fixing frame. The hoisting assembly includes a vehicle-mounted platform, a steel stand, a pull rod, a hinge shaft, a guide rail, a sliding block, a steel suspension beam, a hoist motor, and a cable support. The steel stand is vertically arranged on the vehicle-mounted platform. The upper end of the pull rod is hingedly connected to the upper end of the steel stand, and the lower end is hingedly connected to the hinge shaft fixed on the vehicle-mounted platform. The guide rail is vertically arranged and fixed along the steel stand. The sliding block is slidably arranged on the guide rail. The steel suspension beam is fixed on the sliding block. The hoist motor is fixed on the steel suspension beam, and the cable support is fixed below the steel suspension beam. The hoist motor drives the cable to move up and down in the vertical direction.

[0018] In step S1, the sludge treatment mechanism includes a stirring device, a crushing device, a sludge suction system, a sludge discharge system, and a grouting system.

[0019] The stirring device includes a stirring box and a stirring mechanism. The stirring box is provided with a sludge suction port, a sludge discharge port, and a grout inlet. The stirring mechanism includes a main gear and a plurality of auxiliary gears in transmission with the main gear. The main gear is driven by a stirring motor. A stirring main shaft extending into the stirring box is coaxially arranged on the main gear, and stirring blades are arranged on the stirring main shaft. A stirring auxiliary shaft extending into the stirring box is coaxially arranged on the auxiliary gear, and stirring blades are arranged on the stirring auxiliary shaft.

[0020] The sludge suction system includes a sludge suction main pipe, vertical sludge suction branch pipes, and a horizontal rotary sludge suction branch pipe. The sludge suction port of the stirring box is connected to the sludge suction main pipe, and the sludge suction main pipe and the sludge suction port are provided with the crushing device therebetween. The crushing device includes a fan for suction and a crushing knife for crushing sludge. The suction heads of the vertical sludge suction branch pipes are connected to the vertical drilling device, and the suction heads of the horizontal rotary sludge suction branch pipes are connected to the horizontal rotary drilling assembly. Suction valves are arranged at the suction heads. The pipe body of the horizontal rotary sludge suction branch pipe is a telescopic pipe.

[0021] The grouting system comprises a grouting pipe and a grouting pump arranged on the grouting pipe, one port of the grouting pipe being in communication with the grout inlet on the mixing box to pump the slurry into the mixing box;

[0022] The residue discharging system comprises a residue discharging pipe and a residue discharging pump arranged on the residue discharging pipe, one port of the residue discharging pipe being in communication with the residue discharging port on the mixing box to pump the slurry residue in the mixing box to the ground for collection;

[0023] The residue suction main pipe, the residue discharging pipe and the grouting pipe are arranged along the pipe fixing frame.

[0024] In step S1, the vertical drilling device comprises a vertical drilling U-shaped fork plate and a plurality of cylindrical drilling assemblies arranged on the vertical drilling U-shaped fork plate, the vertical drilling U-shaped fork plate is composed of a vertical drilling web plate, vertical drilling wing plates arranged on both sides of the vertical drilling web plate and vertical drilling steel supports welded on the vertical drilling web plate, the cylindrical drilling assembly comprises two cylinders, a plurality of stirring knife assemblies uniformly arranged on the surface of the cylinder and a motor driving the rotation of the cylinder, the stirring knife assembly is composed of a stirring knife base and a stirring knife obliquely fixed on the stirring knife base, and the rotating shaft of the motor penetrates through the two cylinders and is correspondingly arranged in the rotating shaft hole of the vertical drilling wing plate.

[0025] In step S1, the horizontal rotary drilling U-shaped fork plate is composed of a horizontal rotary drilling web plate, horizontal rotary drilling wing plates arranged at both ends of the horizontal rotary drilling web plate, a horizontal rotary drilling side vertical plate arranged on one side of the horizontal rotary drilling web plate and horizontal rotary drilling steel supports vertically welded on the horizontal rotary drilling web plate.

[0026] The horizontal rotary drilling steel frame is composed of a horizontal rotary drilling side vertical protection plate, a horizontal rotary drilling upper side protection plate, a horizontal rotary drilling lower side protection plate, a horizontal rotary drilling left side vertical protection plate and a horizontal rotary drilling right side vertical protection plate, and the horizontal rotary drilling device and the rotary power assembly are located in the box-shaped space of the horizontal rotary drilling steel frame.

[0027] In steps S2 and S4, during the process that the vertical drilling device vertically drills downward the soil body, the residue suction valve at the suction head of the horizontal rotary residue suction branch pipe is closed, and the residue suction valve at the suction head of the vertical residue suction branch pipe is opened to suck the crushed slurry residue of the vertical drilling device into the crushing device, the crushing device crushes the sucked slurry residue again and sends it into the mixing box for mixing, and the grouting system pumps the slurry into the mixing box in real time to mix with the slurry residue, and the residue discharging system discharges the slurry residue and slurry mixture in the mixing box to the ground in real time for collection and treatment.

[0028] In step S3, during the process that the rotating power assembly drives the horizontal rotating drilling device to rotate and drill the 1 / 4 circular horizontal cantilever plate slot outward in the horizontal plane, the suction head of the vertical suction residue branch pipe is closed, and the suction head of the horizontal rotating suction residue branch pipe is opened to suck the broken residue of the horizontal rotating drilling device into the crushing device, the crushing device sends the sucked residue into the mixing box for mixing after secondary crushing, and the grouting system pumps the mud into the mixing box in real time to mix with the residue; the residue system pumps the residue and mud mixture in the mixing box to the ground for collection and treatment in real time.

[0029] In step S6, during the process that the horizontal rotating drilling device moves laterally to drill and form the rectangular horizontal cantilever plate slot, the suction head of the vertical suction residue branch pipe is closed, and the suction head of the horizontal rotating suction residue branch pipe is opened to suck the broken residue of the horizontal rotating drilling device into the crushing device, the crushing device sends the sucked residue into the mixing box for mixing after secondary crushing, and the grouting system pumps the mud into the mixing box in real time to mix with the residue; the residue system pumps the residue and mud mixture in the mixing box to the ground for collection and treatment in real time.

[0030] The advantages of the present application are:

[0031] (1) The cable, vertical cylindrical drill and horizontally rotatable cylindrical drill with stirring blades are used to realize the drilling of the ground connected wall slot with the horizontal cantilever plate structure in the soil body;

[0032] (2) The horizontal cantilever plate structure and the vertical wall body can be formed into a slot at one time without the need of other mechanical assistance, so as to improve the construction efficiency and save the construction and equipment costs;

[0033] (3) The horizontal rotating drilling device is used to drill and form the 1 / 4 circular horizontal cantilever plate slot array in circulation, and then the rectangular horizontal cantilever plate slot is drilled laterally at one time, so as to realize the drilling of the horizontal cantilever plate slot in the soil body and improve the slot forming construction efficiency;

[0034] (4) The vacuum suction residue and mud combined residue discharge are used to improve the construction environment and save the mud cost;

[0035] (5) The soil body is subjected to secondary crushing in the crushing box, so as to better discharge the slot hole and prevent the blockage of the residue discharge pipe;

[0036] (6) The drilling and residue discharge functions are simultaneously realized, the drilling machine has high integration degree, the uninterrupted and synchronous drilling and residue discharge are realized, the construction process is reduced, the construction cost is saved, and the slot forming construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1is a schematic view of embodiment 1 of the invention;

[0038] Figure 2 is a partial schematic view of embodiment 1 of the invention;

[0039] Figure 3 is a schematic view of the section position of embodiment 1 of the invention;

[0040] Figure 4 is Figure 3 the A-A section view in figure;

[0041] Figure 5 is a schematic view of the vertical drilling device in embodiment 1 of the invention;

[0042] Figure 6 is Figure 5 the B-B section view in figure;

[0043] Figure 7 is Figure 3 the C-C section view in figure;

[0044] Figure 8 is Figure 3 the D-D section view in figure;

[0045] Figure 9 is Figure 3 the E-E section view in figure;

[0046] Figure 10 is Figure 9 the F-F section view in figure;

[0047] Figure 11 is Figure 9 the G-G section view in figure;

[0048] Figure 12 is Figure 3 the H-H section view in figure;

[0049] Figure 13 is Figure 3 the I-I section view in figure;

[0050] Figure 14 is Figure 3 the J-J section view in figure;

[0051] Figure 15 is Figure 3 the K-K section view in figure;

[0052] Figure 16 is Figure 3 the L-L section view in figure;

[0053] Figure 17 is a schematic view of the wall slot construction process flow of the diaphragm wall in embodiment 1 of the invention;

[0054] Figure 18 is Figure 17 M-M section view in the middle;

[0055] Figure 19 is the construction process flow diagram of the wall slot of the bored and dug self-locking counter-pressure diaphragm wall in embodiment 2 of the application;

[0056] Figure 20 is the construction process flow diagram of the wall slot of the bored and dug self-locking positive-pressure diaphragm wall in embodiment 3 of the application;

[0057] Figure 21 is Figure 20 N-N section view in the middle;

[0058] As Figures 1-21 shown, the marks in the figure respectively represent:

[0059] 1. vertical drilling device, 2. horizontal rotary drilling assembly, 3. stirring device, 4. crushing device, 5. slag suction system, 6. grouting system, 7. slag discharge system, 8. pipeline fixing frame, 9. hoisting assembly;

[0060] 11. cylindrical drilling assembly, 12. vertical drilling U-shaped fork plate, 111. cylinder, 112. stirring blade assembly, 113. motor, 114. motor shaft, 121. vertical drilling wing plate, 122. vertical drilling web plate, 123. vertical drilling steel support, 124. shaft hole, 125. vertical slag suction branch pipe through hole, 1121. stirring blade base, 1122 stirring blade;

[0061] 21. horizontal rotary drilling device, 22. rotary power assembly, 23. horizontal rotary drilling steel frame;

[0062] 211. horizontal rotary drilling U-shaped fork plate, 2111. horizontal rotary drilling wing plate, 2112. horizontal rotary drilling web plate, 2113. horizontal rotary drilling side vertical plate, 2114. horizontal rotary drilling steel support, 2115. horizontal rotary drilling slag suction branch pipe through hole, 2116. rotary motor shaft fixing hole;

[0063] 221. rotary motor, 222. rotary motor shaft, 223. fastener, 224. counterforce arm;

[0064] 231. horizontal rotary drilling side vertical guard plate, 232. horizontal rotary drilling upper side guard plate, 233. horizontal rotary drilling lower side guard plate, 234. horizontal rotary drilling left side vertical guard plate, 235. horizontal rotary drilling right side vertical guard plate, 236. rotary motor positioning hole, 237. horizontal rotary slag suction main pipe through hole;

[0065] 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;

[0066] 41. Crushing box; 42. Middle partition; 43. Connecting pipe; 44. Frame; 45. Fan motor; 46. Fan blades; 47. Crushing blade; 48. Filter screen;

[0067] 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;

[0068] 61. Grouting pipe; 62. Grouting pump;

[0069] 71. Slag discharge pipe; 72. Slag discharge pump;

[0070] 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;

[0071] 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;

[0072] 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. Implementation

[0073] 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:

[0074] Example 1: As Figures 1-18 As shown, this embodiment specifically relates to a method for horizontal trenching after single-sided 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, and one side of each vertical diaphragm wall trench c1 extends a certain distance away from the deep foundation pit. The trenching method specifically includes the following steps:

[0075] (S1) installing the hoisting assembly 9 and the drilling machine b on the ground of the construction site, the drilling machine b is hoisted by the lower end of the cable 93 on the hoisting assembly 9, the drilling machine b includes, from top to bottom, the pipeline fixing frame 8, the sludge treatment mechanism, the horizontal rotary drilling assembly 2 and the vertical drilling device 1, wherein the sludge treatment mechanism includes the stirring device 3, the crushing device 4, the sludge suction system 5, the sludge discharge system 7 and the grouting system 6.

[0076] As shown in Figure 1 and Figure 2 , the hoisting assembly 9 includes the vehicle-mounted platform 911, the steel column 97, the pull rod 910, the hinge shaft 99, the guide rail 98, the sliding block 96, the steel suspension beam 95, the cable support 94, the winch motor 91, the fixed shaft 92 and the cable 93, the vehicle-mounted platform 911 has trackable caterpillar tracks and is located on the ground, the steel column 97 is vertically arranged at the front end of the vehicle-mounted platform 911, the pull rod 910 functions as an inclined brace to reinforce the steel column 97, specifically, the upper end of the pull rod 910 is hingedly connected to the upper end of the steel column 97, and the lower end is hingedly connected to the hinge shaft 99 of the vehicle-mounted platform 911; the guide rail 98 is fixedly attached to the steel column 97 to form a vertical track, the sliding block 96 is slidably assembled on the guide rail 98 and can slide in the vertical direction under the drive of a power mechanism; the steel suspension beam 95 is fixed to the sliding block 96, the cable support 94 is fixed to the bottom surface of the steel suspension beam 95, the winch motor 91 is fixed to the steel suspension beam 95 through the fixed shaft 92, and the winch motor 91 is used to drive the cable 93 and the drilling machine hoisted by the lower end of the cable 93 to make lifting movement. It should be noted that, due to the large weight of the drilling machine, the drilling machine can move downward under its own weight without the need for the downward pressure of the drill rod as required in the prior art, and the cable 93 has sufficient length to meet the drilling requirements of the diaphragm wall slot.

[0077] As shown in Figures 1-7As shown, the vertical drilling device 1 is used for drilling and excavating the vertical diaphragm wall slot, mainly comprising a plurality of cylindrical drill assemblies 11 and a vertical drilling U-shaped fork plate 12 used as a mounting frame, the vertical drilling U-shaped fork plate 12 mainly comprises a vertical drilling web plate 122 and vertical drilling wing plates 121 located on both sides of the vertical drilling web plate 122, and based on the number of cylindrical drill assemblies 11, a vertical drilling steel support 123 is vertically welded at the middle position of the vertical drilling web plate 122. The cylindrical drill assembly 11 is composed of two cylindrical drills, a motor 113 and a motor shaft 114, the number of cylindrical drills in the embodiment is 4, and they are distributed in a matrix to form a rectangular cutting surface, and in the downward cutting process, a rectangular hole is formed, and the matrix distribution here refers to that the cylindrical drills are arranged on both sides of the vertical drilling steel support 123. The cylindrical drill comprises a cylinder 111 and a stirrer assembly 112 uniformly distributed on the surface of the cylinder 111, the centrally arranged vertical drilling steel support 123 is welded or bolted with the motor 113 shell, the motor shaft 114 of the motor 113 drives the rotation of the two side cylinders 111, and the end of the motor shaft 114 is supported in the shaft hole 124 of the two side wing plates 121. The stirrer assembly 112 comprises a stirrer base 1121 and a stirrer 1122, the stirrer 1122 is tilted and installed under the fixation of the stirrer base 1121 to facilitate the stirring and excavation of the soil body. In addition, a plurality of vertical sludge suction branch pipe through holes 125 are also provided on the vertical drilling web plate 122, so that the suction head 55 of the vertical sludge suction branch pipe 52 in the sludge suction system 5 extends into the vertical drilling U-shaped fork plate 12 to suck the excavated sludge.

[0078] As Figures 1-3As shown in Figs. 8-11, the horizontal rotary drilling assembly 2 is used for horizontal cantilevered slab trench drilling, and mainly comprises a horizontal rotary drilling device 21, a rotary power assembly 22 for driving the horizontal rotary drilling device 21 to rotate, and a horizontal rotary drilling steel frame 23 for mounting the horizontal rotary drilling device 21 and the rotary power assembly 22. The horizontal rotary drilling device 21 comprises a horizontal rotary drilling U-shaped fork plate 211 and a plurality of horizontal rotary drills mounted on the horizontal rotary drilling U-shaped fork plate 211. The horizontal rotary drills are vertically arranged and arranged in a matrix (forming a rectangular excavation face). Except for the different arrangement (the horizontal rotary drills are vertically arranged, and the cylindrical drill assembly 11 is horizontally arranged), the structure and function of the horizontal rotary drills are the same as those of the cylindrical drill assembly 11, and thus will not be described here. The horizontal rotary drilling U-shaped fork plate 211 is composed of a horizontal rotary drilling web plate 2112, horizontal rotary drilling wing plates 2111 arranged at both ends (upper and lower) of the horizontal rotary drilling web plate 2112, a horizontal rotary drilling side stand plate 2113 arranged at one side of the horizontal rotary drilling web plate 2112, and horizontal rotary drilling steel supports 2114 (having the same function as the vertical drilling steel supports 123) vertically welded on the horizontal rotary drilling web plate 2112. The horizontal rotary drilling side stand plate 2113 is used to separate the horizontal rotary drills and the rotary power assembly 22. In addition, a plurality of horizontal rotary drilling sludge suction branch pipe through holes 2115 are arranged on the horizontal rotary drilling web plate 2112, so that the suction heads 55 of the horizontal rotary sludge suction branch pipes 53 in the sludge suction system 5 extend into the horizontal rotary drilling U-shaped fork plate 211 to suck the excavated sludge.

[0079] The horizontal rotary drilling steel frame 23 is a box-shaped structure with one side open, which is composed of a horizontal rotary drilling side stand plate 231, a horizontal rotary drilling upper side plate 232, a horizontal rotary drilling lower side plate 233, a horizontal rotary drilling left side stand plate 234, and a horizontal rotary drilling right side stand plate 235. The horizontal rotary drilling device 21 and the rotary power assembly 22 are located in the box-shaped space of the horizontal rotary drilling steel frame 23. In addition, a horizontal rotary sludge suction main pipe through hole 237 is arranged on the horizontal rotary drilling upper side plate 232, so as to fix the sludge suction main pipe 51 of the sludge suction system 5.

[0080] The rotating power assembly 22 comprises a rotating motor 221 and a counter-force arm 224 connected with the rotating motor 221 and the right side vertical guard plate 235 of the horizontal rotating drill respectively, the rotating motor shaft 222 of the rotating motor 221 passes through the rotating motor shaft fixing hole 2116 of the upper horizontal rotating drill wing plate 2111 and enters the rotating motor positioning hole 236 of the upper side guard plate 232 of the horizontal rotating drill, the lower end of the rotating motor shaft 222 of the rotating motor 221 passes through the rotating motor shaft fixing hole 2116 of the lower horizontal rotating drill wing plate 2111 and enters the rotating motor positioning hole 236 of the lower side guard plate 233 of the horizontal rotating drill, wherein the rotating motor shaft 222 of the rotating motor 221 is fixedly connected to the horizontal rotating drill wing plate 2111 of the horizontal rotating drill U-shaped fork plate 211 through a fastener 223, and the rotating motor shaft 222 of the rotating motor 221 is rotatably connected to the upper side guard plate 232 (the lower side guard plate 233) of the horizontal rotating drill steel frame 23. In the embodiment, the rotating motor 221 drives the rotating motor shaft 222 to rotate, so as to drive the horizontal rotating drill device 21 to rotate by 90 degrees on the horizontal plane, thereby forming a 1 / 4 circular horizontal cantilever plate groove.

[0081] As shown in Figures 1-16 The sludge treatment mechanism comprises a stirring device 3, a crushing device 4, a sludge suction system 5, a sludge discharge system 7 and a grouting system 6.

[0082] The stirring device 3 comprises a stirring box 31 and a stirring mechanism, the stirring box 31 is fixedly installed on the upper surface of the upper side guard plate 232, the stirring mechanism comprises a main gear 37 and a plurality of auxiliary gears 39 in transmission with the main gear 37, wherein the main gear 37 is driven to rotate by a stirring motor 312, the rotating main gear 37 in turn drives each auxiliary gear 39 to rotate, a stirring main rotating shaft 33 extending into the stirring box 31 is coaxially arranged on the main gear 37, stirring blades are arranged on the stirring main rotating shaft 33, the stirring blades here adopt double-layer large blades 32; a stirring auxiliary rotating shaft 35 extending into the stirring box 31 is coaxially arranged on each auxiliary gear 39, stirring blades are also arranged on the stirring auxiliary rotating shaft 35, the stirring blades on part of the stirring auxiliary rotating shaft 35 adopt double-layer small blades 34, and the stirring blades on another part of the stirring auxiliary rotating shaft 35 adopt single-layer small blades 36, the mud and slurry in the stirring box 31 are stirred to obtain mixed slurry, so as to facilitate discharge. In order to avoid that the slurry in the stirring box 31 seeps into the gear box where the main gear 37 and the auxiliary gear 39 are located during the stirring process, a main gear isolation pad 38 is arranged at the joint of the stirring main rotating shaft 33 and the stirring box 31, and an auxiliary gear isolation pad 310 is arranged at the joint of the stirring auxiliary rotating shaft 35 and the stirring box 31. As shown in Figure 2 A steel cover plate 311 is arranged on the top of the gear box where the main gear 37 and the auxiliary gear 39 are located, and is used to be connected with the pipeline fixing frame 8. The stirring box 31 is provided with a sludge suction port, a sludge discharge port and a slurry inlet port.

[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 2 As 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 Figures 1-3 As 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) such as 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 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 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 mixture of mud and mud 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 horizontal rotary drilling assembly 2 is turned on, and the rotary power assembly 22 drives the horizontal rotary drilling device 21 to rotate 90 degrees outward from the horizontal rotary drilling steel frame 23 on the horizontal plane to drill the soil layer a, forming a 1 / 4 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 is opened to suck the crushed mud from the horizontal rotary drilling device 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 mixture of mud and mud from the mixing tank 31 to the ground for collection and treatment in real time.

[0091] (S4) such as Figure 17 As shown, after drilling a 1 / 4 circular horizontal cantilever plate groove c4, the rotary power component 22 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 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 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 mixture of mud and mud 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 1 / 4 circular horizontal cantilever plate grooves c4 is completed.

[0094] (S6) For example Figure 17 As shown, a horizontal rotary drilling device 21 is used to horizontally drill a 1 / 4 circular horizontal cantilever slab groove c4. Specifically, the horizontal rotary drilling device 21 is rotated 90 degrees outward from the horizontal rotary drilling frame 23 on a horizontal plane, and then moved along the length of the horizontal cantilever slab to drill the 1 / 4 circular horizontal cantilever slab groove c4, thus forming a rectangular horizontal cantilever slab groove c4. Furthermore, as... Figure 18 As shown, the top surface of the rectangular horizontal cantilever slab groove c4 is level with the bottom surface of the deep foundation pit.

[0095] The beneficial effects of this embodiment are:

[0096] (1) By using a cable, a vertical cylindrical drill and a horizontally rotating cylindrical drill with a stirring cutter, the trench of the diaphragm wall with a horizontal cantilever plate structure is drilled and excavated in the soil.

[0097] (2) Both the horizontal cantilever slab structure and the vertical wall can be grooved in one go without the need for other mechanical assistance, thereby improving construction efficiency and saving construction and equipment costs;

[0098] (3) First, a 1 / 4 circular horizontal cantilever slab trench array is drilled and excavated by a horizontal rotary drilling device, and then a rectangular horizontal cantilever slab trench is excavated in one go to realize the drilling and excavation of horizontal cantilever slab trenches in the soil, which can improve the construction efficiency of trenching.

[0099] (4) Improve the construction environment and save mud costs by combining vacuum slag suction and mud discharge;

[0100] (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.

[0101] (6) It has both drilling and slag removal functions, and the drilling rig has a high degree of integration, which realizes the uninterrupted synchronous drilling and slag removal, reduces construction procedures, saves construction costs, and improves trenching construction efficiency.

[0102] Example 2: This example specifically relates to a method for creating a trench by single-sided cyclic rotary drilling followed by horizontal excavation on a self-locking diaphragm wall, such as... Figure 19 As shown, in this embodiment, the trenching method is used to excavate another type of self-locking counter-pressure diaphragm wall trench. This self-locking counter-pressure diaphragm wall trench includes four vertical diaphragm wall trenches c1 (for constructing the vertical diaphragm wall) located on the outer perimeter of the deep foundation pit, and a horizontal cantilever slab trench c4 (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 for this self-locking counter-pressure diaphragm wall trench is similar to... Figure 17 The method for forming the self-locking counter-pressure diaphragm wall trench shown is the same, and the top surface of the rectangular horizontal cantilever slab trench c4 is flush with the bottom surface of the deep foundation pit, so it will not be described again here.

[0103] Example 3: This example specifically relates to a method for creating a trench by single-sided cyclic rotary drilling followed by horizontal excavation on a self-locking diaphragm wall, such as... Figure 20 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 21 As shown, the top surface of the rectangular horizontal cantilever slab groove c4 is flush 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 self-locking diaphragm wall single-side cyclic rotary drilling and post-drilling horizontal excavation trenching method for drilling and excavating a diaphragm wall trench, characterized in that the diaphragm wall trench comprises four vertical diaphragm wall trenches arranged outside the periphery of a deep foundation pit and horizontal cantilever plate trenches arranged on the side of the vertical diaphragm wall trenches and communicating with the vertical diaphragm wall trenches, and the trenching method comprises the following steps: S1: sequentially arranging a pipe fixing frame, a sludge treatment mechanism, a horizontal rotary drilling assembly, and a vertical drilling device on a drilling machine from top to bottom; wherein: the horizontal rotary drilling assembly comprises a horizontal rotary drilling device, a rotary power assembly for driving the horizontal rotary drilling device to rotate, and a horizontal rotary drilling steel frame for mounting the horizontal rotary drilling device and the rotary power assembly; the horizontal rotary drilling device comprises a horizontal rotary drilling U-shaped fork plate and a plurality of vertically arranged horizontal rotary drills mounted on the horizontal rotary drilling U-shaped fork plate; the rotary power assembly comprises a rotary motor and a counterforce arm connected at both ends of the rotary motor and the horizontal rotary drilling steel frame, respectively, and both ends of a rotary motor shaft of the rotary motor are connected to the horizontal rotary drilling steel frame through the horizontal rotary drilling U-shaped fork plate of the horizontal rotary drilling device, wherein the rotary motor shaft is fixedly connected to the horizontal rotary drilling U-shaped fork plate, and the rotary motor shaft is rotatably connected to the horizontal rotary drilling steel frame; the horizontal rotary drilling steel frame has a one-side open box structure; the vertical drilling device comprises a plurality of horizontally arranged cylindrical drilling assemblies forming a rectangular excavation face; S2: locating the horizontal rotary drilling device in the box-shaped space of the horizontal rotary drilling steel frame, controlling the vertical drilling device to vertically drill downward into the soil until the designed depth of the horizontal cantilever plate to form a free section of the vertical diaphragm wall trench; S3: stopping the vertical drilling device from drilling, controlling the rotary power assembly to drive the horizontal rotary drilling device to rotate outward in the horizontal plane to form a 1 / 4 circular horizontal cantilever plate trench; S4: rotating the horizontal rotary drilling device back to the initial state and stopping work, and continuing to control the vertical drilling device to vertically drill downward into the soil to the designed depth of the vertical diaphragm wall trench to form an embedded section of the vertical diaphragm wall trench; S5: repeating steps S2-S4 until the drilling and excavation of the four vertical diaphragm wall trenches and their corresponding 1 / 4 circular horizontal cantilever plate trenches are completed; S6: controlling the rotary power assembly to drive the horizontal rotary drilling device to rotate outward in the horizontal plane and move horizontally to drill the 1 / 4 circular horizontal cantilever plate trench into a rectangular horizontal cantilever plate trench, thereby realizing the drilling and excavation of the diaphragm wall trench.

2. The self-locking diaphragm wall single-side cyclic rotary drilling and post-drilling horizontal excavation trenching method according to claim 1, characterized in that ​ In step S1, the drilling machine is hoisted by a cable of a hoisting assembly, and the lower end of the cable is connected to the pipeline fixing frame; the hoisting assembly comprises a vehicle-mounted platform, a steel stand, a pull rod, a hinge shaft, a guide rail, a sliding block, a steel suspension beam, a hoisting motor and a cable support, the steel stand is vertically arranged on the vehicle-mounted platform, the upper end of the pull rod is hingedly connected to the upper end of the steel stand, and the lower end of the pull rod is hingedly connected to the hinge shaft fixed on the vehicle-mounted platform, the guide rail is vertically arranged and fixed along the steel stand, the sliding block is slidably arranged on the guide rail, the steel suspension beam is fixed on the sliding block, the hoisting motor is fixed on the steel suspension beam, and the cable support is fixed below the steel suspension beam, and the hoisting motor drives the cable to move up and down in the vertical direction.

3. The method according to claim 1, wherein the method is characterized in that In step S1, the sludge treatment mechanism comprises a stirring device, a crushing device, a sludge suction system, a sludge discharge system and a grouting system. The stirring device comprises a stirring box and a stirring mechanism; the stirring box is provided with a sludge suction port, a sludge discharge port and a grout inlet; the stirring mechanism comprises a main gear and a plurality of auxiliary gears which are in transmission with the main gear; the main gear is driven by a stirring motor; a stirring main shaft which extends into the stirring box is coaxially arranged on the main gear; stirring blades are arranged on the stirring main shaft; a stirring auxiliary shaft which extends into the stirring box is coaxially arranged on the auxiliary gear; and stirring blades are arranged on the stirring auxiliary shaft. The sludge suction system comprises a sludge suction main pipe, vertical sludge suction branch pipes and horizontal rotary sludge suction branch pipes which branch out from the sludge suction main pipe; the sludge suction port of the stirring box is connected to the sludge suction main pipe; and the crushing device is arranged between the sludge suction main pipe and the sludge suction port; the crushing device comprises a fan for suction and crushing blades for crushing sludge; the suction heads of the vertical sludge suction branch pipes are connected to the vertical drilling device; the suction heads of the horizontal rotary sludge suction branch pipes are connected to the horizontal rotary drilling assembly; the suction heads are provided with sludge suction valves; and the pipe body of the horizontal rotary sludge suction branch pipes is a telescopic pipe. The grouting system comprises a grouting pipe and a grouting pump arranged on the grouting pipe; one end of the grouting pipe is connected to the grout inlet of the stirring box to pump the slurry into the stirring box. The sludge discharge system comprises a sludge discharge pipe and a sludge discharge pump arranged on the sludge discharge pipe; one end of the sludge discharge pipe is connected to the sludge discharge port of the stirring box to pump the sludge in the stirring box to the ground for collection. The sludge suction main pipe, the sludge discharge pipe and the grouting pipe are arranged along the pipeline fixing frame.

4. The method according to claim 1, wherein the method is characterized in that In step S1, the vertical drilling device comprises a vertical drilling U-shaped fork plate and a plurality of cylindrical drilling assemblies installed on the vertical drilling U-shaped fork plate, the vertical drilling U-shaped fork plate is composed of a vertical drilling web plate, vertical drilling wing plates arranged on both sides of the vertical drilling web plate, and vertical drilling steel supports welded on the vertical drilling web plate, the cylindrical drilling assembly comprises two cylinders, a plurality of stirring knife assemblies uniformly arranged on the surface of the cylinder, and a motor driving the cylinder to rotate, the stirring knife assembly is composed of a stirring knife base and a stirring knife obliquely fixed on the stirring knife base, and the rotating shaft of the motor penetrates through both sides of the cylinder and is correspondingly arranged in the rotating shaft hole of the vertical drilling wing plate.

5. The method of claim 1, wherein the horizontal rotating drilling device comprises a horizontal rotating drilling U-shaped fork plate and a plurality of horizontal rotating drilling assemblies installed on the horizontal rotating drilling U-shaped fork plate, the horizontal rotating drilling U-shaped fork plate is composed of a horizontal rotating drilling web plate, horizontal rotating drilling wing plates arranged at both ends of the horizontal rotating drilling web plate, a horizontal rotating drilling side vertical plate arranged on one side of the horizontal rotating drilling web plate, and horizontal rotating drilling steel supports vertically welded on the horizontal rotating drilling web plate. In step S1, the vertical drilling device comprises a vertical drilling U-shaped fork plate and a plurality of cylindrical drilling assemblies installed on the vertical drilling U-shaped fork plate, the vertical drilling U-shaped fork plate is composed of a vertical drilling web plate, vertical drilling wing plates arranged on both sides of the vertical drilling web plate, and vertical drilling steel supports welded on the vertical drilling web plate, the cylindrical drilling assembly comprises two cylinders, a plurality of stirring knife assemblies uniformly arranged on the surface of the cylinder, and a motor driving the cylinder to rotate, the stirring knife assembly is composed of a stirring knife base and a stirring knife obliquely fixed on the stirring knife base, and the rotating shaft of the motor penetrates through both sides of the cylinder and is correspondingly arranged in the rotating shaft hole of the vertical drilling wing plate.

6. The method of claim 3, wherein in steps S2 and S4, during the vertical downward drilling of the soil body by the vertical drilling device, the suction head of the horizontal rotating suction branch pipe is closed, and the suction head of the vertical suction branch pipe is opened to suck the crushed soil residue of the vertical drilling device into the crushing device, the crushed soil residue is crushed again by the crushing device and then sent into the mixing box for mixing, the grouting system pumps the mud into the mixing box in real time to mix with the soil residue, and the residue discharge system discharges the mixture of the soil residue and the mud in the mixing box to the ground for collection and treatment. In step S3, during the rotation of the horizontal rotating drilling device by the rotating power assembly to drill a 1 / 4 circular horizontal cantilever plate slot, the suction head of the vertical suction branch pipe is closed, and the suction head of the horizontal rotating suction branch pipe is opened to suck the crushed soil residue of the horizontal rotating drilling device into the crushing device, the crushed soil residue is crushed again by the crushing device and then sent into the mixing box for mixing, the grouting system pumps the mud into the mixing box in real time to mix with the soil residue, and the residue discharge system discharges the mixture of the soil residue and the mud in the mixing box to the ground for collection and treatment. ​ ​ In step S6, during the horizontal rotary drilling device moving laterally to drill the rectangular horizontal cantilever plate slot, the suction valve at the suction head of the vertical suction branch pipe is closed, and the suction valve at the suction head of the horizontal rotary suction branch pipe is opened to suck the broken sludge of the horizontal rotary drilling device into the crushing device, the crushing device crushes the sucked sludge again and sends it into the mixing box for mixing, and the grouting system pumps the slurry into the mixing box in real time to mix with the sludge; the sludge and slurry mixture in the mixing box is pumped out to the ground for collection and treatment in real time.

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