A self-locking diaphragm wall double-side rotary drilling and cross-cutting circulation trenching method

Abstract

The application discloses a self-locking ground connecting wall double-side rotary drilling and cross-cutting circulating slotting method, which comprises the following steps: setting a pipeline fixing frame, a sludge treatment mechanism, a horizontal rotary drilling assembly and a vertical drilling device on a drilling machine; controlling the vertical drilling device to vertically drill downward to form a free section of a vertical ground connecting wall slot; controlling a rotary motor to drive the horizontal rotary drilling device to rotate outward on a horizontal plane to drill soil to form a semicircular horizontal cantilever plate slot; controlling a translation assembly to drive the horizontal rotary drilling device to drill soil to the side of a horizontal rotary drilling steel frame on the horizontal plane to form a rectangular horizontal cantilever plate slot; moving the horizontal rotary drilling device to the middle of the horizontal rotary drilling steel frame and rotating the horizontal rotary drilling device into the horizontal rotary drilling steel frame; and continuing to control the vertical drilling device to vertically drill downward to form an embedded section of the vertical ground connecting wall slot; and drilling the ground connecting wall slot. The horizontal cantilever plate structure and the vertical ground connecting wall body can be once formed into slots.

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 double-sided rotary drilling and cutting cycle 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, and then placing the reinforcement cage after cleaning the trench and hoisting it. The underground continuous wall is mainly used as a water interception, seepage prevention, load-bearing, water retaining structure or as a foundation for 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 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. CN 216108696 U "Truss chain milling earth stirring diaphragm wall machine" and patent No. CN 115897551 A "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. The active drive mechanism drives the chain with milling and stirring heads to drill and excavate the diaphragm wall trench.

[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 hole guide drilling of one construction unit is completed, the rock between the adjacent hole guides of the construction unit is milled, and the hole guide drilling of another construction unit is carried out at the same time, 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 of the rollers mill and crush the rock stratum, the rock debris and mud pumped out by the milling wheels are discharged to the ground mud station through the sand suction port in the middle of the milling wheels, and the process 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 rotary drilling and grab bucket combined cycle.

[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 sludge, such as a digging bucket, which needs to be continuously lifted up and down in the slot to excavate and discharge the soil, and the construction efficiency is low; (2) The existing slotting machine and slotting method are mainly for vertical continuous wall slotting construction method, and cannot realize the excavation of horizontal continuous wall / plate structure slot in 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 double-sided rotary drilling and excavation transverse cycle slotting method according to the deficiencies of the above-mentioned prior art. The slotting method sequentially arranges a mud sludge 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, that is, the vertical drilling device stops excavation after excavating the vertical wall slot to the design depth of the horizontal cantilever plate by using a matrix-shaped cylindrical drilling assembly; then a double-sided horizontal rotary drilling device is driven by a rotary motor to drill and excavate a semicircular horizontal cantilever plate slot into the soil; then the semicircular horizontal cantilever plate slot is horizontally transversely drilled and excavated by the horizontal translocation motor driving the two-sided horizontal rotary drilling device, realizing the drilling and excavation of the rectangular horizontal cantilever plate structure slot in the soil; finally, the vertical drilling device is started again to continue to excavate the vertical wall slot to the design depth, and the cycle is repeated to form the continuous wall slot with the rectangular horizontal cantilever plate.

[0007] The purpose of the present application is achieved by the following technical solutions:

[0008] A self-locking diaphragm wall double-side rotary drilling transverse cutting cycle trenching method for drilling diaphragm wall trenches, characterized in that the diaphragm wall trenches include 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, the trenching method comprising the following steps:

[0009] S1: 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; wherein:

[0010] 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;

[0011] The horizontal rotary drilling assembly comprises two oppositely arranged horizontal rotary drilling devices, two rotary linear motion force assemblies for driving the two horizontal rotary drilling devices to move respectively, and a horizontal rotary drilling steel frame for mounting the two horizontal rotary drilling devices and the two rotary linear motion force assemblies; the rotary linear motion force assembly comprises a rotary motor and a translation assembly connected with the rotary motor and fixed on the horizontal rotary drilling steel frame, both ends of a rotary motor shaft of the rotary motor are fixedly connected to the horizontal rotary drilling devices and rotationally connected to the horizontal rotary drilling steel frame, and the rotary motor drives the rotary motor shaft to rotate to drive the horizontal rotary drilling devices to rotate; the horizontal rotary drilling device comprises a horizontal rotary drilling U-shaped yoke plate and a plurality of vertically arranged horizontal rotary drills mounted on the horizontal rotary drilling U-shaped yoke plate; the horizontal rotary drill comprises a first horizontal rotary drill and a second horizontal rotary drill located on both sides of the horizontal rotary drilling device respectively, and a rectangular excavation surface is formed between the first horizontal rotary drills and between the second horizontal rotary drills; the horizontal rotary drilling steel frame is in the form of a box with one side open;

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

[0013] S3: stopping the vertical drilling device from drilling, and controlling the rotary motor of the rotary linear motion force assembly to drive the horizontal rotary drilling device to rotate outward in the horizontal plane to drill the soil body, so as to form a semicircular horizontal cantilever plate trench;

[0014] S4: stop rotating the horizontal rotary drilling device, control the translation assembly of the rotary translation force assembly to drive the horizontal rotary drilling device to drill the earth body to the side of the horizontal rotary drilling steel frame in the horizontal plane to drill the semicircular horizontal cantilever plate groove into the rectangular horizontal cantilever plate groove;

[0015] S5: move the horizontal rotary drilling device to the middle of the horizontal rotary drilling steel frame and make the horizontal rotary drilling device rotate into the horizontal rotary drilling steel frame, continue to control the vertical drilling device to vertically drill the earth body downward to the designed depth of the vertical diaphragm wall groove to form the embedded segment of the vertical diaphragm wall groove;

[0016] S6: repeat steps S2-S5 until the drilling and excavation of one of the vertical diaphragm wall grooves and the corresponding several rectangular horizontal cantilever plate grooves are completed, and the several rectangular horizontal cantilever plate grooves form a complete horizontal cantilever plate groove;

[0017] S7: according to step S6, complete the drilling and excavation of the remaining three vertical diaphragm wall grooves and the corresponding rectangular horizontal cantilever plate grooves, thereby realizing the drilling and excavation of the diaphragm wall groove.

[0018] 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.

[0019] In step S1, the stirring mechanism includes a main gear and several 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. The auxiliary gears are coaxially arranged with stirring auxiliary shafts extending into the stirring box, and stirring blades are arranged on the stirring auxiliary shafts.

[0020] The suction system comprises a suction main pipe, vertical suction branch pipes and horizontal rotary suction branch pipes which are branched from the suction port of the suction main pipe; the suction port of the mixing box is connected with the suction main pipe, and the suction main pipe and the suction port are provided with the crushing device; the crushing device comprises a fan for suction and a crushing knife for crushing sludge; the suction head of the vertical suction branch pipe is connected to the vertical drilling device, the suction head of the horizontal rotary suction branch pipe is connected to the horizontal rotary drilling assembly, and the suction head is provided with a suction valve; the pipe body of the horizontal rotary 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 end of the grouting pipe is connected with the grout inlet of the mixing box to pump the slurry into the mixing box;

[0022] 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 with the sludge discharge port of the mixing box to pump the sludge in the mixing box to the ground for collection;

[0023] The suction main pipe, the sludge discharge 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 installed on the vertical drilling U-shaped fork plate; the vertical drilling U-shaped fork plate comprises 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 comprises a stirring knife base and a stirring knife obliquely fixed on the stirring knife base; 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 comprises two oppositely arranged horizontal rotary drilling web plates, a baffle connected with the same side of the two horizontal rotary drilling web plates, horizontal rotary drilling wing plates arranged at both ends of the horizontal rotary drilling web plate, a horizontal rotary drilling side stand 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 upright guard plate, a horizontal rotary drilling upper side guard plate, a horizontal rotary drilling lower side guard plate, a horizontal rotary drilling left side upright guard plate and a horizontal rotary drilling right side upright guard plate, the horizontal rotary drilling device and the rotary translation force assembly are located in the box-shaped space of the horizontal rotary drilling steel frame, a rotary motor sliding channel is formed in the horizontal rotary drilling upper side guard plate and the horizontal rotary drilling lower side guard plate, the rotary motor shaft of the rotary motor is respectively installed in the two rotary motor sliding channels, and the rotary motor sliding channels are oppositely arranged.

[0027] The translation assembly comprises a translation motor, a counter-force arm, a translation screw rod, a nut and a support seat, the base of the translation motor is fixed to the side of the horizontal rotary drilling steel frame, the output end is provided with the translation screw rod, one end of the translation screw rod is rotationally connected to the support seat fixed to the horizontal rotary drilling lower side guard plate, the translation screw rod is provided with the nut matched therewith, the nut is connected to the rotary motor through the counter-force arm, the translation motor drives the translation screw rod to rotate so that the nut moves along the axial direction of the translation screw rod, thereby driving the rotary motor shaft to move along the length direction of the rotary motor sliding channel, and the translation of the horizontal rotary drilling device is realized.

[0028] In steps S2 and S5, during the vertical downward drilling of the vertical drilling device, the suction head of the vertical suction branch pipe is opened, the suction head of the horizontal rotary suction branch pipe is closed, the crushed sludge of the vertical drilling device is sucked into the crushing device, the crushed sludge is crushed again in the crushing device and then sent into the mixing box for mixing, the grouting system pumps the slurry into the mixing box in real time, the sludge and slurry mixture in the mixing box is pumped out by the sludge discharge system in real time and then collected and treated on the ground.

[0029] In step S3, during the rotation of the horizontal rotary drilling device in the horizontal plane to drill the semicircular horizontal cantilever plate groove, the suction head of the vertical suction branch pipe is closed, the suction head of the horizontal rotary suction branch pipe corresponding to the first horizontal rotary drilling device is opened, the crushed sludge of the horizontal rotary drilling device is sucked into the crushing device, the crushed sludge is crushed again in the crushing device and then sent into the mixing box for mixing, the grouting system pumps the slurry into the mixing box in real time, the sludge and slurry mixture in the mixing box is pumped out by the sludge discharge system in real time and then collected and treated on the ground.

[0030] In step S4, the rotating and horizontally moving force assembly drives the horizontal rotating drilling device to drill a rectangle of the horizontal cantilever plate slot on the side of the horizontal rotating drilling steel frame, closes the suction valve at the suction head of the vertical suction residue branch pipe, and opens the suction residue valve at the suction head of the horizontal rotating suction residue branch pipe corresponding to the second horizontal rotating drill, so as to suck the broken residue of the horizontal rotating drilling device into the crushing device, the crushing device crushes the sucked residue again and sends it into the mixing box for mixing, and the grouting system pumps the mud into the mixing box in real time to mix with the residue; the residue discharge system discharges the mixture of the residue and the mud in the mixing box to the ground for collection and treatment in real time.

[0031] The advantages of the present application are:

[0032] (1) The cable, vertical cylindrical drill, cylindrical drill with horizontal translation and rotating motor are used to realize the excavation of the ground wall slot with the horizontal cantilever plate structure in the soil body;

[0033] (2) The horizontal cantilever plate structure and the vertical ground wall body can be once grooved without other mechanical assistance, so as to improve the construction efficiency and save the construction and equipment cost;

[0034] (3) The double horizontal translation and horizontal rotating drilling device is used to drill a semicircular horizontal cantilever plate slot and then excavate a rectangular horizontal cantilever plate slot, and the rectangular horizontal cantilever plate slot in the soil body can be realized through multiple cycles of drilling and excavation;

[0035] (4) The vacuum residue suction and mud combined residue discharge are used to improve the construction environment and save the mud cost;

[0036] (5) The soil body is crushed twice in the crushing box, which can better discharge the slot hole and prevent the blockage of the residue discharge pipe;

[0037] (6) The drilling and residue discharge functions are simultaneously realized, the drilling machine has high integration, the drilling and residue discharge are continuously and synchronously performed, the construction process is reduced, the construction cost is saved, and the drilling construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a schematic view of embodiment 1 of the present application;

[0039] Figure 2 is a partial schematic view of embodiment 1 of the present application;

[0040] Figure 3 is a cross-sectional position schematic view of embodiment 1 of the present application;

[0041] Figure 4 is Figure 3 the A-A cross-sectional view in FIG. 1;

[0042] Figure 5 is a schematic diagram of the vertical drilling device in embodiment 1 of the present application;

[0043] Figure 6 is Figure 5 a B-B sectional view in FIG. 1;

[0044] Figure 7 is Figure 3 a C-C sectional view in FIG. 1;

[0045] Figure 8 is Figure 3 a D-D sectional view in FIG. 1;

[0046] Figure 9 is Figure 3 an E-E sectional view in FIG. 1;

[0047] Figure 10 is Figure 9 an F-F sectional view in FIG. 1;

[0048] Figure 11 is Figure 9 a G-G sectional view in FIG. 1;

[0049] Figure 12 is Figure 3 an H-H sectional view in FIG. 1;

[0050] Figure 13 is Figure 3 an I-I sectional view in FIG. 1;

[0051] Figure 14 is Figure 3 a J-J sectional view in FIG. 1;

[0052] Figure 15 is Figure 3 a K-K sectional view in FIG. 1;

[0053] Figure 16 is Figure 3 an L-L sectional view in FIG. 1;

[0054] Figure 17 is a schematic diagram of the construction process flow of the wall slot of the self-locking diaphragm wall in embodiment 1 of the present application;

[0055] Figure 18 is Figure 17 an M-M sectional view in FIG. 1;

[0056] Figure 19 is a schematic diagram of the construction process flow of the wall slot of the self-locking diaphragm wall in embodiment 2 of the present application;

[0057] Figure 20 is Figure 19 an N-N sectional view in FIG. 1;

[0058] as Figures 1-20As shown in the figure, the labels represent:

[0059] 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;

[0060] 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;

[0061] 21. Horizontal rotary drilling device; 22. Rotary translational power assembly; 23. Horizontal rotary drilling steel frame;

[0062] 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;

[0063] 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;

[0064] 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;

[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. Detailed 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 creating a self-locking diaphragm wall through bilateral rotary drilling and transverse cyclic trenching. 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 distance away from the deep foundation pit. The trenching method specifically includes the following steps:

[0075] (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.

[0076] like Figure 1 and Figure 2As shown, the hoisting assembly 9 includes a vehicle platform 911, a steel column 97, a pull rod 910, a hinge shaft 99, a guide rail 98, a sliding block 96, a steel suspension beam 95, a cable support 94, a winch motor 91, a fixed shaft 92, and a cable 93. The vehicle platform 911 has trackable caterpillar wheels and is located on the ground. The steel column 97 is vertically arranged at the front end of the vehicle platform 911. The pull rod 910 is diagonally braced to 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 platform 911. The guide rail 98 is fixedly arranged along the steel column 97 to form a vertical track. The sliding block 96 is slidably arranged 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. The winch motor 91 is used to drive the cable 93 and the drilling machine at the lower end of the cable 93 to move up and down. 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. In addition, the cable 93 has sufficient length to meet the drilling requirements of the diaphragm wall slot.

[0077] As shown in the drawings, Figures 1-7 The vertical drilling device 1 is used for drilling and excavating a vertical diaphragm wall slot and mainly includes a plurality of cylindrical drill assemblies 11 and a vertical drilling U-shaped fork plate 12 serving as a mounting frame. The vertical drilling U-shaped fork plate 12 mainly includes a vertical drilling web plate 122 and vertical drilling wing plates 121 located on both sides of the vertical drilling web plate 122. 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, one motor 113, and one motor shaft 114. In this embodiment, the number of cylindrical drills is four, which are arranged in a matrix to form a rectangular cutting surface, and a rectangular hole is formed during downward cutting. 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 includes 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 to the outer shell of the motor 113. The motor shaft 114 of the motor 113 drives the two side cylinders 111 to rotate. 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 includes a stirrer base 1121 and a stirrer 1122. The stirrer 1122 is obliquely installed under the fixation of the stirrer base 1121 to facilitate the excavation of the soil body. In addition, a plurality of vertical slurry suction branch pipe through holes 125 are formed in the vertical drilling web plate 122 to facilitate the extension of the suction head 55 of the vertical slurry suction branch pipe 52 in the slurry suction system 5 into the vertical drilling U-shaped fork plate 12 to suck the excavated slurry.

[0078] AsFigures 1-3 As shown in Figs. 8-11, the horizontal rotary drilling assembly 2 is used for the horizontal cantilevered panel slot drilling, mainly comprising two oppositely arranged horizontal rotary drilling devices 21, two rotary horizontal power assemblies 22 respectively used for driving the two horizontal rotary drilling devices 21 to move, and a horizontal rotary drilling steel frame 23 used for mounting the two horizontal rotary drilling devices 21 and the two rotary horizontal power assemblies 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, and the horizontal rotary drills are vertically arranged and arranged in a matrix, wherein the horizontal rotary drills comprise a first horizontal rotary drill and a second horizontal rotary drill respectively located at two sides of the horizontal rotary drilling device 21, and the first horizontal rotary drill and the second horizontal rotary drill can respectively form a rectangular excavation face. Except that the arrangement manner is different (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 respectively 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 two oppositely arranged horizontal rotary drilling web plates 2112, a baffle 2117 connected to the same side of the two horizontal rotary drilling web plates 2112, horizontal rotary drilling wing plates 2111 arranged at the (upper and lower) two ends of the horizontal rotary drilling web plates 2112, horizontal rotary drilling side vertical plates 2113 arranged at one side of the horizontal rotary drilling web plates 2112, and horizontal rotary drilling steel supports 2114 (having the same effect as the vertical drilling steel supports 123) vertically welded on the horizontal rotary drilling web plates 2112, wherein the horizontal rotary drilling side vertical plates 2113 are used for separating the horizontal rotary drills and the rotary horizontal power assemblies 22. In addition, a plurality of horizontal rotary drilling slag suction branch pipe through holes 2115 are arranged on the horizontal rotary drilling web plates 2112, so that the suction heads 55 of the horizontal rotary slag suction branch pipes 53 in the slag 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 vertical baffle 231, a horizontal rotary drilling upper side baffle 232, a horizontal rotary drilling lower side baffle 233, a horizontal rotary drilling left side vertical baffle 234, and a horizontal rotary drilling right side vertical baffle 235, and the horizontal rotary drilling device 21 and the rotary horizontal power assembly 22 are located in the box-shaped space of the horizontal rotary drilling steel frame 23. A rotary motor slide 236 is formed on each of the horizontal rotary drilling upper side baffle 232 and the horizontal rotary drilling lower side baffle 233, and the two rotary motor slides 236 are oppositely arranged. The rotary motor shaft 222 of the rotary motor 221 is respectively mounted at the two ends of the two rotary motor slides 236, and the two ends of the rotary motor shaft 222 can respectively move along the length direction of the two rotary motor slides 236. In addition, a horizontal rotary slag suction main pipe through hole 237 is arranged on the horizontal rotary drilling upper side baffle 232, so as to fix the slag suction main pipe 51 of the slag suction system 5.

[0080] 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.

[0081] 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.

[0082] like Figures 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.

[0083] 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 horizontal rotary drill upper side guard plate 232. The stirring mechanism comprises a main gear 37 and a plurality of auxiliary gears 39 which are driven by the main gear 37. The main gear 37 is driven to rotate by a stirring motor 312. The rotating main gear 37 in turn drives the auxiliary gears 39 to rotate. The main gear 37 is coaxially provided with a stirring main rotating shaft 33 which extends into the stirring box 31. The stirring main rotating shaft 33 is provided with stirring blades. The stirring blades herein are double-layer large blades 32. The auxiliary gears 39 are coaxially provided with stirring auxiliary rotating shafts 35 which extend into the stirring box 31. The stirring auxiliary rotating shafts 35 are also provided with stirring blades. The stirring blades on some of the stirring auxiliary rotating shafts 35 are double-layer small blades 34. The stirring blades on the other stirring auxiliary rotating shafts 35 are single-layer small blades 36. The mud and slurry in the stirring box 31 are stirred to obtain uniformly mixed slurry, which is beneficial to discharge. In order to avoid the slurry in the stirring box 31 from penetrating into the gear box where the main gear 37 and the auxiliary gears 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. 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 the steel cover plate 311 is arranged at the top of the gear box where the main gear 37 and the auxiliary gears 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.

[0084] The sludge suction system 5 is connected with the sludge suction port of the stirring box 31. The sludge suction system 5 mainly comprises a sludge suction main pipe 51, a vertical sludge suction branch pipe 52, a horizontal rotary sludge suction branch pipe 53 and the crushing device 4. One end of the sludge suction main pipe 51 is connected with the sludge suction port of the stirring box 31 through the crushing device 4. The other end (i.e. the suction end) of the sludge suction main pipe 51 is bifurcated into the vertical sludge suction branch pipe 52 and the horizontal rotary sludge suction branch pipe 53. Figure 2As shown, the vertical sludge suction branch pipe 52 extends into the vertical drilling device 1, and the suction head 55 of the vertical sludge suction branch pipe 52 is close to the cylindrical drilling assembly 11, so that it can suck the soil sludge stirred by cutting, and the vertical sludge suction valve 56 is arranged at the suction head 55 for controlling the opening and closing of the pipeline. The horizontal rotary sludge suction branch pipe 53 extends into the horizontal rotary drilling assembly 2, and the suction head 55 of the horizontal rotary sludge suction branch pipe 53 is close to the horizontal rotary drilling device 21, so that it can suck the soil sludge stirred by cutting, and the horizontal rotary sludge suction valve 57 is arranged at the suction head 55 for controlling the opening and closing of the pipeline, wherein part of the pipeline of the horizontal rotary sludge suction branch pipe 53 is in the form of an extension pipe 54 to adapt to the rotation of the horizontal rotary drilling device 21. The sucked sludge enters the mixing box 31 after being crushed by the crushing device 4 into fine particles, and the crushing device 4 mainly includes a crushing box 41, a partition plate 42, a connecting pipe 43, a rack 44, a fan motor 45, fan blades 46, crushing knives 47, and a filter screen 48. The partition plate 42 is arranged obliquely in the crushing box 41 to form a slope for the flow of sludge. The fan motor 45 is installed on the top plate in the crushing box 41 through the rack 44, and the fan blades 46 are arranged on the rotating shaft of the fan motor 45. The high-speed rotating fan motor 45 and fan blades 46 can form a negative pressure suction in the sludge main pipe 51, and the crushing knives 47 are installed at the installation position of the fan motor 45, so that the sucked sludge must pass through the crushing knives 47 before entering the mixing box 31 through the connecting pipe 43. The filter screen 48 is arranged at the end surface of the fan motor 45 to filter large particle sludge, so as to avoid the sludge flowing into the mixing box 31 from the fan motor 45.

[0085] The slurry inlet of the mixing box 31 is connected to the grouting system 6 on the ground, and the grouting system 6 mainly includes a grouting pipe 61 and a grouting pump 62. The grouting pipe 61 pumps the slurry with a suitable concentration into the mixing box 31 through the grouting pump 62, mixes with the sludge sucked up, and becomes a liquid, which is convenient for sucking outwards.

[0086] The sludge outlet of the mixing box 31 is connected to the sludge discharge system 7 on the ground, and the sludge discharge system 7 includes a sludge discharge pipe 71 and a sludge discharge pump 72. The lower end of the sludge discharge pipe 71 is connected to the sludge outlet of the mixing box 31 and extends downward to a certain depth, so as to facilitate the discharge of more slurry. The sludge discharge pipe 71 discharges the uniformly mixed slurry from the mixing box 31 to the ground through the sludge discharge pump 72 for collection and treatment.

[0087] As Figures 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.

[0088] (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.

[0089] 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.

[0090] (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.

[0091] 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.

[0092] (S4) such as Figure 17 As shown, after drilling the semi-circular horizontal cantilever slab groove c4, the rotary motor 221 of the rotary translational power assembly 22 is turned off, and the translation motor 2241 of the rotary translational power assembly 22 is turned on. The two translation motors 2241 drive the corresponding horizontal rotary drilling device 21 (the horizontal rotary drill on the other side, i.e., the second horizontal rotary drill) to move to both sides of the horizontal rotary drill steel frame 23 (left and right) on the horizontal plane and drill the soil, so as to drill the semi-circular horizontal cantilever slab groove c4 into a rectangular horizontal cantilever slab groove c4.

[0093] 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.

[0094] (S5) For example Figure 17 As shown, the translation motor 2241 drives the horizontal rotary drilling device 21 to move to the middle of the horizontal rotary drilling steel frame 23, and the rotary motor 221 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 is used to continue drilling to the design depth to form the embedded section diaphragm wall groove c3.

[0095] In the process of drilling downward, the horizontal rotary suction valve 57 at the suction head 55 of the horizontal rotary suction branch pipe 53 is closed, and the vertical suction valve 56 at the suction head 55 of the vertical suction branch pipe 52 is opened to suck the broken sludge of the vertical drilling device 1 into the crushing device 4, the crushing device 4 sends the secondary crushed sludge into the mixing box 31 for mixing, and the grouting system 6 pumps the slurry into the mixing box 31 in real time to mix with the sludge; the sludge and slurry mixture in the mixing box 31 is pumped out to the ground for collection and treatment in real time by the sludge discharge system 7.

[0096] (S6) As shown in Figure 17 , steps S2-S5 are repeated until the drilling and excavation of one vertical diaphragm wall slot c1 and its corresponding several rectangular horizontal cantilever plate slots c4 are completed, and the several rectangular horizontal cantilever plate slots c4 form a complete horizontal cantilever plate slot c4.

[0097] (S7) As shown in Figure 17 , according to step S6, the drilling and excavation of the remaining three vertical diaphragm wall slots c1 and their corresponding horizontal cantilever plate slots c4 are completed, thereby realizing the drilling and excavation of the diaphragm wall slot c. In addition, as shown in Figure 18 , the top surface of the horizontal cantilever plate slot c4 is flush with the bottom surface of the deep foundation pit.

[0098] The beneficial effects of the embodiment are:

[0099] (1) By using cables, vertical cylindrical drills, cylindrical drills with horizontal translation and rotation motors, a diaphragm wall slot with a horizontal cantilever plate structure in the soil is realized;

[0100] (2) The horizontal cantilever plate structure and the vertical diaphragm wall body can be grooved at one time without the need for other mechanical assistance, achieving the purpose of improving construction efficiency and saving construction and equipment costs;

[0101] (3) By using double horizontal translation and horizontal rotation drilling devices, a semicircular horizontal cantilever plate slot is first drilled and excavated, and then a rectangular horizontal cantilever plate slot is excavated horizontally, and through multiple cycles of drilling and excavation, a rectangular horizontal cantilever plate slot in the soil can be realized;

[0102] (4) By using vacuum suction and slurry combined sludge discharge, the construction environment is improved, and the slurry cost is saved;

[0103] (5) The soil is secondarily crushed by the crushing box, which can better discharge the slot hole and prevent the blockage of the sludge discharge pipe;

[0104] (6) It has the functions of drilling and discharging at the same time, the drilling machine has high integration, realizes uninterrupted and synchronous drilling and discharging, reduces the construction process, saves construction cost, and improves the drilling construction efficiency.

[0105] Embodiment 2: This embodiment specifically relates to a self-locking diaphragm wall double-side rotary drilling and cross-cutting cycle trenching method, as shown in Figure 19 In this embodiment, the trenching method is used to excavate a self-locking positive pressure diaphragm wall trench, which includes four vertical diaphragm wall trenches c1 arranged outside the deep foundation pit and horizontal cantilever plate trenches c4 arranged inside the vertical diaphragm wall trenches c1 and connected with the vertical diaphragm wall trenches c1, wherein the four vertical diaphragm wall trenches c1 form a rectangular structure. The construction method of the self-locking positive pressure diaphragm wall trench is the same as that of the self-locking negative pressure diaphragm wall trench shown in Figure 17 , and as shown in Figure 20 , the top surface of the rectangular horizontal cantilever plate trench c4 is flush with the bottom surface of the deep foundation pit, so it is not repeated here.

[0106] Although the above embodiments have been described in detail with reference to the accompanying drawings for the purpose of illustrating the concepts and embodiments of the present application, those skilled in the art can recognize that various improvements and changes can be made to the present application without departing from the scope defined by the claims, and therefore, they are not repeated here.

Claims

1. A self-locking diaphragm wall double-side rotary drilling transverse cutting cycle trenching method for drilling diaphragm wall trenches, characterized in that the diaphragm wall trenches comprise 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: S1: 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; wherein: 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 horizontal rotary drilling assembly comprises two oppositely arranged horizontal rotary drilling devices, two rotary linear motion force assemblies for driving the two horizontal rotary drilling devices to move respectively, and a horizontal rotary drilling steel frame for mounting the two horizontal rotary drilling devices and the two rotary linear motion force assemblies; the rotary linear motion force assembly comprises a rotary motor and a translation assembly connected with the rotary motor and fixed on the horizontal rotary drilling steel frame, both ends of a rotary motor shaft of the rotary motor are fixedly connected to the horizontal rotary drilling devices and rotationally connected to the horizontal rotary drilling steel frame, and the rotary motor drives the rotary motor shaft to rotate to drive the horizontal rotary drilling devices to rotate; the horizontal rotary drilling device comprises a horizontal rotary drilling U-shaped yoke plate and a plurality of vertically arranged horizontal rotary drills mounted on the horizontal rotary drilling U-shaped yoke plate; the horizontal rotary drill comprises a first horizontal rotary drill and a second horizontal rotary drill located on both sides of the horizontal rotary drilling device respectively, and a rectangular excavation surface is formed between the first horizontal rotary drills and between the second horizontal rotary drills; the horizontal rotary drilling steel frame is in the form of a box with one side open; S2: making the horizontal rotary drilling device located 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: making the vertical drilling device stop drilling, controlling the rotary motor of the rotary linear motion force assembly to drive the horizontal rotary drilling device to rotate outward in the horizontal plane to drill the soil and form a semicircular horizontal cantilever plate trench; S4: making the horizontal rotary drilling device stop rotating, controlling the translation assembly of the rotary linear motion force assembly to drive the horizontal rotary drilling device to drill the soil on the side of the horizontal rotary drilling steel frame in the horizontal plane to drill the semicircular horizontal cantilever plate trench into a rectangular horizontal cantilever plate trench; S5: making the horizontal rotary drilling device move to the middle of the horizontal rotary drilling steel frame and rotate to the inside of the horizontal rotary drilling steel frame, 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. ​ S6: repeating steps S2-S5 until the drilling and excavation of one of the vertical diaphragm wall slots and its corresponding several rectangular horizontal cantilever plate slots are completed, and several rectangular horizontal cantilever plate slots form a complete horizontal cantilever plate slot; S7: according to step S6, the drilling and excavation of the remaining three vertical diaphragm wall slots and their corresponding rectangular horizontal cantilever plate slots are completed, thereby realizing the drilling and excavation of the diaphragm wall slots.

2. The self-locking diaphragm wall double-side rotary drilling and excavation transverse cyclic slotting 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 pipe 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; the cable support is fixed below the steel suspension beam; and the hoist motor drives the cable to move up and down in the vertical direction.

3. The self-locking diaphragm wall double-side rotary drilling and excavation transverse cyclic slotting method according to claim 1, characterized in that In step S1, the stirring mechanism includes a main gear and several 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; The slurry suction system includes a slurry suction main pipe, vertical slurry suction branch pipes diverging from a suction port of the slurry suction main pipe, and a horizontal rotary slurry suction branch pipe; the slurry suction port of the stirring box is connected to the slurry suction main pipe; the slurry suction main pipe and the slurry suction port are provided with the crushing device therebetween; the crushing device includes a fan for suction and crushing blades for crushing slurry; the suction head of the vertical slurry suction branch pipe is connected to the vertical drilling device; the suction head of the horizontal rotary slurry suction branch pipe is connected to the horizontal rotary drilling assembly; the suction head is provided with a slurry suction valve; and the pipe body of the horizontal rotary slurry suction branch pipe is a telescopic pipe; The grouting system includes a grouting pipe and a grouting pump arranged on the grouting pipe; one port of the grouting pipe is in communication with the grouting inlet of the stirring box to pump the slurry into the stirring box; The slurry discharge system includes a slurry discharge pipe and a slurry discharge pump arranged on the slurry discharge pipe; one port of the slurry discharge pipe is in communication with the slurry discharge port of the stirring box to pump the slurry in the stirring box to the ground for collection; The slurry suction main pipe, the slurry discharge pipe, and the grouting pipe are arranged along the pipe fixing frame.

4. The self-locking diaphragm wall double-side rotary drilling and excavating transverse cutting and cyclic trenching method according to claim 1, 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 plurality of cylindrical drilling assemblies are horizontally arranged and form a rectangular excavation surface, 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 for 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 the two cylinders and is correspondingly arranged in the rotating shaft hole of the vertical drilling wing plate.

5. The self-locking diaphragm wall double-side rotary drilling and excavating transverse cutting and cyclic trenching method according to claim 1, characterized in that In step S1, the horizontal rotary drilling U-shaped fork plate is composed of two oppositely arranged horizontal rotary drilling web plates, a baffle connected to the same side of the two horizontal rotary drilling web plates, horizontal rotary drilling wing plates arranged at both ends of the horizontal rotary drilling web plate, a horizontal rotary drilling side stand 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; The horizontal rotary drilling steel frame is composed of a horizontal rotary drilling side stand plate, a horizontal rotary drilling upper side stand plate, a horizontal rotary drilling lower side stand plate, a horizontal rotary drilling left side stand plate, and a horizontal rotary drilling right side stand plate, and the horizontal rotary drilling device and the rotary translation force assembly are located in the box-shaped space of the horizontal rotary drilling steel frame; a rotary motor sliding channel is formed in each of the horizontal rotary drilling upper side stand plate and the horizontal rotary drilling lower side stand plate, and the two rotary motor sliding channels are oppositely arranged, and the rotary motor shafts are respectively installed in the two rotary motor sliding channels; The translation assembly comprises a translation motor, a counterforce arm, a translation screw, a nut, and a support seat, the translation motor base is fixed on the side of the horizontal rotary drilling steel frame, the output end is provided with the translation screw, one end of the translation screw is rotationally connected with the support seat fixed on the horizontal rotary drilling lower side stand plate, the translation screw is provided with the nut matched therewith, the nut is connected with the rotary motor through the counterforce 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 sliding channel, and the translation of the horizontal rotary drilling device is realized.

6. The self-locking diaphragm wall double-side rotary drilling and excavating transverse cutting and cyclic trenching method according to claim 3, characterized in that In step S2 and step S5, during the process of the vertical drilling device vertically downward drilling the earth body, the suction head of the vertical suction branch pipe is opened, and the suction head of the horizontal suction branch pipe is closed, so that the crushed sludge of the vertical drilling device is sucked into the crushing device, the crushed sludge is secondarily crushed by the crushing device and then sent 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 by the sludge discharge system in real time to the ground for collection and treatment. In step S3, during the process of the horizontal rotary drilling device rotating outward to drill the semicircular horizontal cantilever plate groove in the horizontal plane, the suction head of the vertical suction branch pipe is closed, and the suction head of the horizontal suction branch pipe corresponding to the first horizontal rotary drill is opened, so that the crushed sludge of the horizontal rotary drilling device is sucked into the crushing device, the crushed sludge is secondarily crushed by the crushing device and then sent 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 by the sludge discharge system in real time to the ground for collection and treatment. In step S4, during the process of the horizontal rotary drilling device drilling the rectangular horizontal cantilever plate groove to the side of the horizontal rotary drilling steel frame in the horizontal plane, the suction head of the vertical suction branch pipe is closed, and the suction head of the horizontal suction branch pipe corresponding to the second horizontal rotary drill is opened, so that the crushed sludge of the horizontal rotary drilling device is sucked into the crushing device, the crushed sludge is secondarily crushed by the crushing device and then sent 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 by the sludge discharge system in real time to the ground for collection and treatment.

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