A construction method for rigidly connecting two vessels in series for reef blasting in inland waterways

Abstract

The present invention provides a construction method for rigidly connecting two ships in series for reef blasting in inland waterways. The specific steps and features include rigidly connecting two drill and blast ships in series as a whole for anchor positioning, simultaneously conducting drill and blast operations, and simultaneously shifting the drill and blast ships. This method can avoid problems such as the mutual crossing and interference of the main cables and back cables between ships when multiple drill and blast ships are arranged separately, difficulties in safe avoidance during blasting, and a large occupation of the construction area. After the number of drill and blast ships increases, the progress of reef blasting construction is greatly improved, and the construction period is saved.

Description

Technical Field

[0001] The invention relates to a method for constructing a double-ship rigid series reef blasting construction in an inland waterway, belonging to the field of water transport engineering to which the invention relates. Background Art

[0002] Reef blasting construction is an important technical means of waterway regulation projects. The number of drilling and blasting ships and the number of drilling rigs equipped on the drilling and blasting ships directly affect the construction period of reef blasting. By enlarging the drilling and blasting ships and arranging up to 12 drilling rigs, the drilling efficiency is greatly improved, the construction period is shortened, and it is widely used in reef blasting construction for coastal waterway regulation.

[0003] When blasting reefs in inland waterways, especially in mountainous waterways, large drilling and blasting vessels cannot reach the construction site due to the winding and low-grade waterways. Small drilling and blasting vessels with a length of about 50 meters and 3-4 drilling rigs are usually used for reef blasting. This seriously restricts the progress of reef blasting construction projects with large engineering volumes and concentrated construction areas. How to improve the drilling and blasting efficiency by optimizing the layout and increasing the number of drilling and blasting vessels in the construction area has become an important technical issue that needs to be solved in the blasting of reefs in mountainous waterways. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for reef blasting construction with two ships in a rigid series connection in an inland waterway. The method proposes that two drilling and blasting ships are rigidly connected in series to anchor and position as a whole, and drilling and blasting operations and displacement of the drilling and blasting ships are performed simultaneously, thereby avoiding the problems of main cables and return cables between ships interfering with each other when multiple drilling and blasting ships are arranged separately, difficulty in safe avoidance during blasting, and occupation of a large construction area. After the number of drilling and blasting ships is increased, the progress of reef blasting construction is greatly improved, and the construction period is saved.

[0005] In order to realize the above technical features, the object of the present invention is achieved as follows: a method for rigid series reef blasting construction of two ships in an inland waterway comprises the following steps:

[0006] Step 1: Connecting the No. 1 drilling and blasting work vessel with the No. 2 drilling and blasting work vessel;

[0007] Step 2: Anchoring and positioning of No. 1 drilling and blasting workboat and No. 2 drilling and blasting workboat;

[0008] Step 3: Adjust the positions of No. 1 drilling and blasting work vessel and No. 2 drilling and blasting work vessel;

[0009] Step 4: Drilling, charging and wiring operations of the first row of construction sections in the first construction area;

[0010] Step 5: Drilling, charging and wiring operations for all remaining construction sections in the first construction area;

[0011] Step 6: Shift the safety zones of Drilling and Blasting Vessel No. 1 and Drilling and Blasting Vessel No. 2;

[0012] Step 7: Conduct the overall initiation operation in the first construction operation area;

[0013] Step 8: Return Drilling and Blasting Vessel No. 1 and Drilling and Blasting Vessel No. 2 to the next construction working area;

[0014] Step 9: Repeat Steps 3 - 8 until the drilling and blasting operations in all construction operation areas that can be carried out for this positioning are completed.

[0015] The specific working process of Step 1 is as follows:

[0016] Step 1.1: Use a tugboat to tow Drilling and Blasting Vessel No. 1 to the designated construction area;

[0017] Step 1.2: Use a tugboat to tow Drilling and Blasting Vessel No. 2 to the tail of Drilling and Blasting Vessel No. 1;

[0018] Step 1.3: Connect the tail of Drilling and Blasting Vessel No. 1 and the head of Drilling and Blasting Vessel No. 2 using a double - vessel fixing system.

[0019] The specific working process of Step 2 is as follows:

[0020] Conduct the anchoring and positioning operation of Drilling and Blasting Vessel No. 1:

[0021] Step 2.1: Use an anchor - handling workboat to throw the anchor stones tied to the two main cables of Drilling and Blasting Vessel No. 1 to the first anchoring point, and tow the two lifting cables to the fixing points for fixation;

[0022] Step 2.2: Use an anchor - handling workboat to tow the first inner starboard cable of Drilling and Blasting Vessel No. 1 to the first mooring bollard on the shore and fix it manually; tow the first inner port cable of Drilling and Blasting Vessel No. 1 to the shore side and connect it to the second mooring bollard;

[0023] Step 2.3: Use an anchor - handling workboat to tow the anchor stone tied to the first outer starboard cable of Drilling and Blasting Vessel No. 1 to the second anchoring point for throwing and positioning; tow the anchor stone tied to the first outer port cable of Drilling and Blasting Vessel No. 1 to the third anchoring point for throwing and positioning; thus completing the anchoring and positioning of Drilling and Blasting Vessel No. 1.

[0024] Conduct the anchoring and positioning operation of Drilling and Blasting Vessel No. 2:

[0025] Step 2.4: Use an anchor - handling workboat to tow the second inner port cable of Drilling and Blasting Vessel No. 2 to the shore side and connect it to the third mooring bollard and fix it manually;

[0026] Step 2.5: Use the cable-anchoring workboat to tow the anchor stone of the second stern outboard splayed cable of the No. 2 drill and blast workboat to the fourth anchor point for casting and positioning.

[0027] Step 2.6: Use the cable-anchoring workboat to tow the anchor stone of the stern cable of the No. 2 drill and blast workboat to the fifth anchor point for casting and positioning.

[0028] Step 2.7: Adjust the stress of each steel cable so that the No. 1 drill and blast workboat and the No. 2 drill and blast workboat are positioned.

[0029] The specific working process of the said Step 3 is as follows:

[0030] Step 3.1, Adjustment of the upstream and downstream positions of the ship position: Use the windlass or winch at the bow of the No. 1 drill and blast workboat to take in or pay out the main cable and the lifting cable respectively, use the windlass or winch at the stern of the No. 2 drill and blast workboat to take in or pay out the stern cable, and at the same time appropriately adjust the stress of other steel cables to adjust the upstream and downstream positions of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat in the river channel.

[0031] Step 3.2, Adjustment of the left and right positions of the ship position: Use the windlasses or winches at the bows and sterns of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat to take in or pay out the first bow outboard splayed cable, the first stern outboard splayed cable, the second stern outboard splayed cable, the first bow inboard splayed cable, the first stern inboard splayed cable and the second stern inboard splayed cable respectively; at the same time, appropriately adjust the stress of other steel cables to realize the adjustment of the left and right positions of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat in the river channel.

[0032] Step 3.3, Ship position verification and drill positioning: Use the survey control equipment to position the No. 1 drill and blast workboat, the No. 2 drill and blast workboat and the drill, and make the drill tracks arranged on the inner sides of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat parallel to the construction reference line by adjusting the upstream and downstream directions and the left and right sides of the ship position; adjust multiple first drills on the No. 1 drill and blast workboat to make the drilling positions coincide with the designed hole positions; adjust multiple second drills on the No. 2 drill and blast workboat to make the drilling positions coincide with the designed hole positions.

[0033] The specific working process of the said Step 4 is as follows:

[0034] Step 4.1, Drilling operation: Lower the casing at the position to be drilled, lower the drill tool to the rock formation surface through the inside of the casing, start the first drills on the No. 1 drill and blast workboat and the second drills on the No. 2 drill and blast workboat respectively, first use the micro-pressure drill to loosen the crushed stones on the riverbed surface so that the casing continues to drop until it reaches the hard riverbed, and then carry out full-pressure drilling. While drilling, send pressured air to blow away the crushed stones in the hole.

[0035] Step 4.2, Borehole Quality Inspection: When drilling reaches the designed depth, stop the drilling operation. Check the quality of the formed hole by moving the drill pipe up and down. If the depth of each drop of the drill pipe is the same as the drilled depth, it indicates good hole formation quality, and then remove the drill pipe.

[0036] Step 4.3, Charging Operation: After each borehole is completed and the quality inspection is qualified, the charging operation is carried out. For underwater drilling and blasting, emulsion explosives packed in cylinders are mostly selected. According to the drilling and blasting parameters and explosives, appropriate PVC pipes are selected as auxiliary operation materials. According to the types of auxiliary operations, the PVC pipes are divided into two categories: charging pipes and propulsion pipes. The charging pipes are made on-site as needed, with a slightly pointed bottom and a length consistent with the length of the blast hole. The propulsion pipes are pre-made, divided into several sections of fixed length, and can be randomly combined into different lengths, but a common first-section propulsion pipe needs to be reserved and a rope is tied to the pipe. During the charging operation, outside the hole, the emulsion explosives and detonators are loaded into the charging pipe, and then the charging pipe is gradually pressed down and retracted to the bottom of the blast hole through the propulsion pipe. Then, all the propulsion pipes are pulled out for later use by using the rope of the first-section propulsion pipe.

[0037] Step 4.4, Wiring Operation: Select a rope with excellent elasticity, toughness, and tensile strength and tie it to the blasting wire, and ensure that the rope is slightly shorter than the blasting wire. At least one detonator is set in each blast hole, and the blasting wires of all detonators are connected in the designed network mode and then connected to a main wire. The quality of the main wire and the rope tied to it should be significantly higher than that of ordinary blasting wires and ropes, with excellent water resistance, corrosion resistance, and tensile strength, and ensure repeated use.

[0038] Step 4.5, Borehole Shifting: After the charging and wiring operations are completed for each borehole, move the drill rig on the drill rig track to the next designed hole position.

[0039] Repeat the above drilling, charging, wiring operations and borehole shifting until all the construction of the designed hole positions within the drill rig track range of the first row of construction sections is completed.

[0040] The specific working process of Step 5 is as follows: Start the shore-side winch on the No. 1 drilling and blasting workboat to tighten the first bow inner eight-strand cable and the first stern inner eight-strand cable; the shore-side winch on the No. 2 drilling and blasting workboat tightens the second inner eight-strand cable. At the same time, start the riverside winch on the No. 1 drilling and blasting workboat to loosen the first bow outer eight-strand cable and the first stern outer eight-strand cable, and the riverside winch on the No. 2 drilling and blasting workboat loosens the second stern outer eight-strand cable. Repeat Step 4 to carry out the drilling, charging, and wiring operations on the second row of construction sections.

[0041] Repeat Step 4 for the construction section drilling until all the drilling, charging, and wiring operations of all construction sections in a blasting batch are completed.

[0042] The specific working process of Step 6 is as follows:

[0043] Turn on the winch at the stern of the No. 2 drill and blast workboat to tighten the back cable, generating a force in the downstream direction. At the same time, turn on the winch at the bow of the No. 1 drill and blast workboat to loosen the main cable, so that the No. 1 drill and blast workboat and the No. 2 drill and blast workboat move downstream to the safety zone; while the drill and blast workboats are moving, put in the blasting wire and tying ropes to keep them in a slack state all the time;

[0044] The specific working process of step 7 is as follows: After all the ships and personnel in the safety warning area are evacuated, carry out the detonation operation;

[0045] The specific working process of step 8 is as follows: Turn on the winch at the bow of the No. 1 drill and blast workboat to tighten the main cable, generating a force in the upstream direction. At the same time, turn on the winch at the stern of the No. 2 drill and blast workboat to loosen the back cable, so that the No. 1 drill and blast workboat and the No. 2 drill and blast workboat return upstream to the next construction area.

[0046] The double-boat fixing system includes a first fixing plate and a second fixing plate fixed on the No. 1 drill and blast workboat. The first fixing plate is hinged to a third fixing plate fixed on the No. 2 drill and blast workboat through a first bolt; the second fixing plate is hinged to a fourth fixing plate fixed on the No. 2 drill and blast workboat; and 4 mooring bitts at the stern of the No. 1 drill and blast workboat and the bow of the No. 2 drill and blast workboat are tied and fixed together by the cross method using cable ropes to realize the synchronous movement of the two drill and blast workboats.

[0047] For rivers with navigation requirements during construction, after setting the first bow outer angled cable, the first stern outer angled cable and the second stern outer angled cable in steps 1 and 2, the water depth above the cable crossing the waterway must meet the ship navigation requirements;

[0048] The length L between the first anchor point and the fixing point of the main cable of the No. 1 drill and blast workboat and the fifth anchor point of the back cable of the No. 2 drill and blast workboat is controlled by the following formula:

[0049] L≥L1 + (L2 + L3) + L4 + L5 + L6 (1)

[0050] L4 = m×L7 (2)

[0051] L7 = L2 + L3 - a1 - b1 (3)

[0052] Where: L1 is the shortest distance between No. 1 drilling and blasting workboat and the first anchor point; L2 and L3 are the designed lengths of No. 1 and No. 2 drilling and blasting workboats, respectively; L4 is the length of the construction area after one anchoring and positioning; m is the number of drilling and blasting construction work areas for one drilling and blasting workboat; L5 is the distance between the downstream boundary of the construction area and the boundary of the safety zone; L6 is the shortest distance between No. 2 drilling and blasting workboat and the fifth anchor point; a1 is the shortest distance between the drilling rig track and the bow of No. 1 drilling and blasting workboat; b2 is the shortest distance between the drilling rig track and the stern of No. 2 drilling and blasting workboat;

[0053] The distance N between the second and third anchor points of the No. 1 drilling and blasting work ship and the fourth anchor point of the No. 2 drilling and blasting work ship and the outermost side of the construction area is controlled by the following formula:

[0054] N ≥ L10 + N1 (4)

[0055] Where: L10 is the designed width of the drilling and blasting ship; N1 is the shortest distance between the outer anchor machine of the drilling and blasting work ship and the anchor point;

[0056] The number of construction sections in step 5 should be controlled according to the total amount of blasting explosives based on the actual project, but the time from charging to detonation should not exceed 12 hours.

[0057] The present invention has the following beneficial effects:

[0058] 1. The present invention uses two drilling and blasting ships to carry out drilling and blasting construction in a rigid series connection. The number of ships in the same drilling and blasting operation area is increased from one to two, and the number of ships is doubled. The intensity of drilling and blasting operations in the same area is expected to double, which greatly shortens the progress of reef blasting construction. At the same time, because the two drilling and blasting ships operate as a whole to anchor and position, and carry out drilling and blasting operations and displacement of the drilling and blasting ships at the same time, the workload of laying out and moving the drilling and blasting ships does not change much. This time, the adoption of this method can also avoid the cross-interference of the main cables and return cables between the ships when multiple drilling and blasting ships are arranged separately, the difficulty of safe avoidance during blasting, and the large occupation of the construction area.

[0059] 2. By setting the first outer-shaped cable, the first outer-shaped cable and the second outer-shaped cable, they can also be used as bridge cables across the waterway, thereby facilitating the passage of people.

[0060] 3. By adopting the above-mentioned joint operation mode of multiple drilling and blasting work vessels, drilling operations can be carried out in multiple holes at one time, thereby effectively improving the efficiency of the drilling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0062] Figure 1 Schematic diagram of the positioning of the drilling and blasting ship.

[0063] Figure 2 Drilling and blasting operation layout drawing.

[0064] Figure 3 Hole layout drawing of the construction area.

[0065] Figure 4 Schematic diagram of the width of the single - construction section.

[0066] Figure 5 Sectional view of drilling and charging operation.

[0067] Figure 6 Schematic diagram of the double - ship fixed system.

[0068] Figure 7 Large - scale drawing of the double - ship fixed system.

[0069] Figure 8 Schematic diagram of the fixing plate component of the double - ship fixed system.

[0070] Figure 9 Schematic diagram of the pin component of the double - ship fixed system.

[0071] In the figure: main cable 101, first anchor point 102, water - lifting cable 103, fixing point 104, first bow in - turned cable 105, first mooring ground anchor 106, first stern in - turned cable 107, second mooring ground anchor 108, first bow out - turned cable 109, second anchor point 110, first stern out - turned cable 111, third anchor point 112;

[0072] Second stern in - turned cable 201, third mooring ground anchor 202, second stern out - turned cable 203, fourth anchor point 204, back - stay cable 205, fifth anchor point 206;

[0073] Drill tracks 4, 6, construction reference line 5, designed hole positions 7;

[0074] First drills 401, 402, 403..., second drills 601, 602, 603...;

[0075] First row of construction sections 301, second row of construction sections 302, remaining construction sections 303, 304... Specific implementation manners

[0076] The following further describes the implementation manners of the present invention with reference to the accompanying drawings.

[0077] Embodiment 1:

[0078] Refer to Figures 1-9 , a rigid series - connection reef - blasting construction method for two ships in an inland waterway, comprising the following steps:

[0079] Step 1: Connection between Drilling and Blasting Workboat No. 1 and Drilling and Blasting Workboat No. 2;

[0080] Step 1.1: Use a tugboat to tow Drilling and Blasting Workboat No. 1 to the designated construction area;

[0081] Step 1.2: Use a tugboat to tow Drilling and Blasting Workboat No. 2 to the tail of Drilling and Blasting Workboat No. 1;

[0082] Step 1.3: Connect the tail of Drilling and Blasting Workboat No. 1 and the head of Drilling and Blasting Workboat No. 2 using a double-boat fixing system.

[0083] Step 2: Anchoring and positioning of Drilling and Blasting Workboat No. 1 and Drilling and Blasting Workboat No. 2;

[0084] Carry out the anchoring and positioning operation of Drilling and Blasting Workboat No. 1:

[0085] Step 2.1: Use an anchor-hauling workboat to throw the anchor stones tied to the two main cables 101 of Drilling and Blasting Workboat No. 1 to the first anchoring point 102, and tow the two water-lifting cables 103 to the fixing point 104 for fixation;

[0086] Step 2.2: Use an anchor-hauling workboat to tow the first inner starboard cable 105 of Drilling and Blasting Workboat No. 1 to the first ship mooring bull 106 set on the shore and fix it manually; tow the first inner port cable 107 of Drilling and Blasting Workboat No. 1 to the shore side and connect it to the second ship mooring bull 108;

[0087] Step 2.3: Use an anchor-hauling workboat to tow the anchor stone tied to the first outer starboard cable 109 of Drilling and Blasting Workboat No. 1 to the second anchoring point 110 for throwing and positioning; tow the anchor stone tied to the first outer port cable 111 of Drilling and Blasting Workboat No. 1 to the third anchoring point 112 for throwing and positioning; thus completing the anchoring and positioning of Drilling and Blasting Workboat No. 1.

[0088] Carry out the anchoring and positioning operation of Drilling and Blasting Workboat No. 2:

[0089] Step 2.4: Use an anchor-hauling workboat to tow the second inner port cable 201 of Drilling and Blasting Workboat No. 2 to the shore side and connect it to the third ship mooring bull 202 and fix it manually;

[0090] Step 2.5: Use an anchor-hauling workboat to tow the anchor stone tied to the second outer port cable 203 of Drilling and Blasting Workboat No. 2 to the fourth anchoring point 204 for throwing and positioning;

[0091] Step 2.6: Use an anchor-hauling workboat to tow the anchor stone tied to the back cable 205 of Drilling and Blasting Workboat No. 2 to the fifth anchoring point 206 for throwing and positioning.

[0092] Step 2.7: Adjust the stress of each steel cable so that the positioning of Drilling and Blasting Workboat No. 1 and Drilling and Blasting Workboat No. 2 is completed.

[0093] Step 3: Adjustment of the positions of Drilling and Blasting Vessel No. 1 and Drilling and Blasting Vessel No. 2

[0094] Step 3.1, Adjustment of the upstream and downstream positions of the vessel: Use the windlass or winch at the bow of Drilling and Blasting Vessel No. 1 to take in or pay out the main cable 101 and the water-lifting cable 103 respectively, use the windlass or winch at the stern of Drilling and Blasting Vessel No. 2 to take in or pay out the down cable 205, and at the same time appropriately adjust the stress conditions of other steel cables to adjust the upstream and downstream positions of Drilling and Blasting Vessel No. 1 and Drilling and Blasting Vessel No. 2 in the river channel;

[0095] Step 3.2, Adjustment of the left and right positions of the vessel: Use the windlasses or winches at the bows and sterns of Drilling and Blasting Vessel No. 1 and Drilling and Blasting Vessel No. 2 to take in or pay out the first bow outer bevel cables 109, the first stern outer bevel cables 111 and the second stern outer bevel cables 203, as well as the first bow inner bevel cables 105, the first stern inner bevel cables 107 and the second stern inner bevel cables 201 respectively; at the same time, appropriately adjust the stress conditions of other steel cables to realize the adjustment of the left and right positions of Drilling and Blasting Vessel No. 1 and Drilling and Blasting Vessel No. 2 in the river channel;

[0096] Step 3.3, Vessel position verification and drill positioning: Use the survey control equipment to position Drilling and Blasting Vessel No. 1, Drilling and Blasting Vessel No. 2 and the drills, and through the adjustment of the upstream and downstream directions and the left and right sides of the vessel position, make the drill tracks 4 and 6 arranged on the inner sides of Drilling and Blasting Vessel No. 1 and Drilling and Blasting Vessel No. 2 parallel to the construction reference line 5; adjust multiple first drills 401, 402, 403... on Drilling and Blasting Vessel No. 1 to make the drilling positions coincide with the designed hole positions; adjust multiple second drills 601, 602, 603... on Drilling and Blasting Vessel No. 2 to make the drilling positions coincide with the designed hole positions 7.

[0097] Step 4: Drilling, charging and wiring operations for the first row of construction sections 301 in the first construction operation area

[0098] Step 4.1, Drilling operation: Lower the casing at the position to be drilled, lower the drill string through the inside of the casing to the rock formation surface, and respectively start the first drills 401, 402, 403... on Drilling and Blasting Vessel No. 1 and the second drills 601, 602, 603... on Drilling and Blasting Vessel No. 2. First, use the micro-pressure drill to loosen the crushed stones on the riverbed surface to make the casing continue to fall until it reaches the hard riverbed, and then carry out full-pressure drilling. While drilling, send pressurized air to blow away the crushed stones in the hole;

[0099] Step 4.2, Drilling quality inspection: When drilling reaches the designed depth, stop the drilling operation, check the hole formation quality by moving the drill pipe up and down. If the depth of each drop of the drill pipe is the same as the drilled depth, it indicates that the hole formation quality is good, and then remove the drill pipe;

[0100] Step 4.3, Charging operation: After each drilling is completed and the quality inspection is qualified, the charging operation is carried out; for underwater drilling and blasting, emulsion explosives in cylindrical packages are mostly selected. According to the drilling and blasting parameters and the explosives, appropriate PVC pipes are selected as auxiliary operation materials; according to the types of auxiliary operations, the PVC pipes are divided into two categories: charging pipes and pushing pipes; the charging pipes are made on-site as needed, with a slightly pointed bottom and a length equal to that of the blast hole; the pushing pipes are pre-made, divided into several sections of fixed length, and can be randomly combined into different lengths, but a common first-section pushing pipe needs to be reserved, with a rope tied to the pipe; during the charging operation, the emulsion explosives and detonators are loaded into the charging pipe outside the hole, and then the charging pipe is gradually pushed down to the bottom of the blast hole through the pushing pipes, and then all the pushing pipes are pulled out for standby using the rope of the first-section pushing pipe;

[0101] Step 4.4, Wiring operation: Select a rope with excellent elasticity, toughness, and tensile strength and tie it to the blasting wire, ensuring that the rope is slightly shorter than the blasting wire; at least one detonator is set in each blast hole, and the blasting wires of all detonators are connected in the designed network mode and then connected to a main wire. The quality of the main wire and the rope tied to it should be significantly higher than that of ordinary blasting wires and ropes, with excellent water resistance, corrosion resistance, and tensile strength, and ensure repeated use;

[0102] Step 4.5, Drilling shift: After the charging and wiring operations are completed for each drilling, move the drill on the drill rig tracks 4 and 6 to the next designed hole position;

[0103] Repeat the above drilling, charging, wiring operations and drilling shift until all the designed hole positions within the drill rig track range of the first row of construction section 301 are constructed.

[0104] Step 5: Drilling, charging, and wiring operations for the remaining construction sections 302, 303...n in the first construction area;

[0105] Start the shore-side winch on the No. 1 drilling and blasting workboat to tighten the first bow inner eight-strand cable 105 and the first stern inner eight-strand cable 107; start the shore-side winch on the No. 2 drilling and blasting workboat to tighten the second inner eight-strand cable 201. At the same time, start the riverside winch on the No. 1 drilling and blasting workboat to loosen the first bow outer eight-strand cable 109 and the first stern outer eight-strand cable 111, and start the riverside winch on the No. 2 drilling and blasting workboat to loosen the second stern outer eight-strand cable 203, so that the No. 1 drilling and blasting workboat and the No. 2 drilling and blasting workboat are translated towards the shore side to the second row of construction section 302, and repeat Step 4 to carry out the drilling, charging, and wiring operations on the second row of construction section 302;

[0106] Repeat Step 4 for drilling in construction sections 303, 304...n until the drilling, charging, and wiring operations for all construction sections of a blasting batch are completed.

[0107] Step 6: Shifting the safety zones of Blasting Workboat No. 1 and Blasting Workboat No. 2;

[0108] Start the stern winch of Blasting Workboat No. 2 to tighten the stern cable 205 to generate a downstream force. At the same time, start the bow winch of Blasting Workboat No. 1 to loosen the main cable, so that Blasting Workboat No. 1 and Blasting Workboat No. 2 move downstream to the safety zone; while the blasting workboats are moving, put in the blasting cables and tying ropes to keep them in a slack state all the time.

[0109] Step 7: Overall initiation operation in the first construction operation area;

[0110] After all the ships and personnel in the safety warning area have been evacuated, carry out the initiation operation.

[0111] Step 8: Return of Blasting Workboat No. 1 and Blasting Workboat No. 2 to the next construction work area;

[0112] Start the bow winch of Blasting Workboat No. 1 to tighten the main cable 101 to generate an upstream force. At the same time, start the stern winch of Blasting Workboat No. 2 to loosen the stern cable, so that Blasting Workboat No. 1 and Blasting Workboat No. 2 return upstream to the next construction area.

[0113] Step 9: Repeat Steps 3 - 8 until the blasting operations in all the construction operation areas that can be carried out for this positioning are completed.

[0114] Embodiment 2:

[0115] Furthermore, the double - ship fixing system includes a first fixing plate 801 and a second fixing plate 802 fixed on Blasting Workboat No. 1. The first fixing plate 801 is hinged to a third fixing plate 803 fixed on Blasting Workboat No. 2 through a first bolt 901; the second fixing plate 802 is hinged to a fourth fixing plate 804 fixed on Blasting Workboat No. 2; and the four mooring bitts at the stern of Blasting Workboat No. 1 and the bow of Blasting Workboat No. 2 are tied and fixed together by using the cross - method with the cable 10 to realize the synchronous movement of the two blasting workboats. By adopting the above double - ship fixing system, Blasting Workboat No. 1 and Blasting Workboat No. 2 can be reliably rigidly connected, and the distance between them is ensured to be zero, thereby effectively increasing the construction scope and avoiding the collision between the two ships during the working process.

[0116] Embodiment 3:

[0117] Furthermore, for rivers with navigation requirements during construction, after setting the first bow outer - splayed cable 109, the first stern outer - splayed cable 111 and the second stern outer - splayed cable 203 in Steps 1 and 2, the water depth above the cables crossing the waterway must meet the ship navigation requirements;

[0118] The length L between the first anchoring point 102 of the main cable of the No. 1 drill and blast workboat and the fifth anchoring point 206 of the backstay cable 205 of the No. 2 drill and blast workboat is controlled by the following formula:

[0119] L≥L1 + (L2 + L3) + L4 + L5 + L6 (1)

[0120] L4 = m×L7 (2)

[0121] L7 = L2 + L3 - a1 - b1 (3)

[0122] Where: L1 is the shortest distance between the No. 1 drill and blast workboat and the first anchoring point 102; L2 and L3 are the designed ship lengths of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat respectively, L4 is the length of the construction area after one-time anchoring and positioning, m is the number of construction areas for one-time drilling and blasting operations by one drill and blast workboat, L5 is the distance between the downstream boundary of the construction area and the boundary of the safety area, L6 is the shortest distance between the No. 2 drill and blast workboat and the fifth anchoring point 206, a1 is the shortest distance between the drill rig track of the No. 1 drill and blast workboat and the bow, and b2 is the shortest distance between the drill rig track of the No. 2 drill and blast workboat and the stern;

[0123] The distance N between the second anchoring point 110 and the third anchoring point 112 of the No. 1 drill and blast workboat and the fourth anchoring point 204 of the No. 2 drill and blast workboat from the outermost side of the construction area is controlled by the following formula:

[0124] N ≥ L10 + N1 (4)

[0125] Where: L10 is the designed ship width of the drill and blast boat; N1 is the shortest distance between the outer anchor winch of the drill and blast workboat and the anchoring point;

[0126] The number of construction sections in step 5 should be controlled according to the actual project by the total blasting charge, but the time from charging to detonation operation does not exceed 12 hours.

Claims

1. A construction method for rigid tandem reef blasting of two ships in inland waterways, comprising the following steps: Step 1: Connection of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat; Step 2: Anchoring and positioning of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat; Step 3: Adjustment of the ship positions of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat; Step 4: Drilling, charging and wiring operations for the first row of construction sections (301) in the first construction operation area; Step 5: Drilling, charging and wiring operations for the remaining construction sections (302, 303... n) in the first construction operation area; Step 6: Shifting of the safety areas of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat; Step 7: Overall initiation operation for the first construction operation area; Step 8: Return of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat to the next construction work area; Step 9: Repeat Steps 3 - 8 until the drill and blast operations for all construction operation areas (1, 2,... m) that can be carried out for this positioning are completed; The specific working process of Step 2 is as follows: Carry out the anchoring and positioning operation of the No. 1 drill and blast workboat: Step 2.1: Use a mooring workboat to throw the anchor stones tied to the two main cables (101) of the No. 1 drill and blast workboat to the first anchoring point (102), and tow the two lifting cables (103) to the fixing point (104) for fixation; Step 2.2: Use a mooring workboat to tow the first inner starboard cable (105) of the No. 1 drill and blast workboat to the first ship anchor block (106) set on the shore, and carry out fixation manually; tow the first inner port cable (107) of the No. 1 drill and blast workboat to the shore side and connect it to the second ship anchor block (108); Step 2.3: Use a mooring workboat to tow the anchor stone tied to the first outer starboard cable (109) of the No. 1 drill and blast workboat to the second anchoring point (110) for throwing and positioning; tow the anchor stone tied to the first outer port cable (111) of the No. 1 drill and blast workboat to the third anchoring point (112) for throwing and positioning; thus completing the anchoring and positioning of the No. 1 drill and blast workboat; Carry out the anchoring and positioning operation of the No. 2 drill and blast workboat: Step 2.4: Use a mooring workboat to tow the second inner port cable (201) of the No. 2 drill and blast workboat to the shore side and connect it to the third ship anchor block (202), and carry out fixation manually; Step 2.5: Use a mooring workboat to tow the anchor stone tied to the second outer port cable (203) of the No. 2 drill and blast workboat to the fourth anchoring point (204) for throwing and positioning; Step 2.6: Use a mooring workboat to tow the anchor stone tied to the stern cable (205) of the No. 2 drill and blast workboat to the fifth anchoring point (206) for throwing and positioning; Step 2.7: Adjust the stress conditions of each steel cable so that the No. 1 drill and blast workboat and the No. 2 drill and blast workboat are positioned.

2. The method for rigidly connecting two vessels in series for reef blasting construction in inland waterways according to claim 1, characterized in that, The specific working process of Step 1 is as follows: Step 1.1: Use a tugboat to tow the No. 1 drill and blast workboat to the designated construction area; Step 1.2: Use a tugboat to tow the No. 2 drill and blast workboat to the tail of the No. 1 drill and blast workboat; Step 1.3: Use a double - ship fixing system to connect the tail of the No. 1 drill and blast workboat to the head of the No. 2 drill and blast workboat.

3. The method for rigidly connecting two vessels in series for reef blasting construction in inland waterways according to claim 1, wherein, The specific working process of Step 3 is as follows: Step 3.1, Adjustment of the upstream and downstream positions of the vessel positions: Using the capstan or winch at the bow of the No. 1 drill and blast workboat, respectively take in or pay out the main cable (101) and the water-lifting cable (103), and use the capstan or winch at the stern of the No. 2 drill and blast workboat to take in or pay out the down cable (205). At the same time, appropriately adjust the stress conditions of other steel cables to adjust the upstream and downstream positions of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat in the river channel; Step 3.2, Adjustment of the left and right positions of the vessel positions: Using the capstans or winches at the bows and sterns of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat, respectively take in or pay out the first bow outer eight-shaped cable (109), the first stern outer eight-shaped cable (111) and the second stern outer eight-shaped cable (203), as well as the first bow inner eight-shaped cable (105), the first stern inner eight-shaped cable (107) and the second stern inner eight-shaped cable (201); At the same time, appropriately adjust the stress conditions of other steel cables to achieve the adjustment of the left and right positions of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat in the river channel; Step 3.3, Vessel position verification and drill positioning: Use the survey control equipment to position the No. 1 drill and blast workboat, the No. 2 drill and blast workboat and the drill. Through the adjustment of the upstream and downstream directions and the left and right sides of the vessel positions, make the drill tracks (4, 6) arranged on the inner sides of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat parallel to the construction reference line (5); Adjust multiple first drills (401, 402, 403...) on the No. 1 drill and blast workboat to make the drilling positions coincide with the designed hole positions; Adjust multiple second drills (601, 602, 603...) on the No. 2 drill and blast workboat to make the drilling positions coincide with the designed hole positions (7).

4. The method for rigidly connecting two vessels in series for reef blasting construction in inland waterways according to claim 1, characterized in that, The specific working process of Step 4 is as follows: Step 4.1, Drilling operation: Lower the casing at the position to be drilled, lower the drill tool to the rock formation surface through the inside of the casing, and respectively start the first drills (401, 402, 403...) on the No. 1 drill and blast workboat and the second drills (601, 602, 603...) on the No. 2 drill and blast workboat. First, use the micro-pressure drill to loosen the crushed stones on the riverbed surface to make the casing continue to fall until it reaches the hard riverbed, and then perform full-pressure drilling. While drilling, send pressurized air to blow away the crushed stones in the hole; Step 4.2, Drilling quality inspection: When drilling reaches the designed depth, stop the drilling operation, and check the hole formation quality by moving the drill pipe up and down. If the depth of each time the drill pipe drops is the same as the drilled depth, it indicates that the hole formation quality is good, and then remove the drill pipe; Step 4.3, Charging operation: After each drilling is completed and the quality inspection is qualified, the charging operation is carried out; For underwater drill and blast, emulsified explosives in cylindrical packages are mostly selected. According to the drill and blast parameters and the explosives, select appropriate PVC pipes as auxiliary operation materials; According to the types of auxiliary operations, the PVC pipes are divided into 2 categories: charging pipes and propulsion pipes; The charging pipes are made on-site as needed, with a slightly pointed bottom and a length consistent with the length of the blast hole; The propulsion pipes are prefabricated, divided into several sections of fixed length, and can be randomly combined into different lengths. However, a common first-section propulsion pipe needs to be reserved, and a rope is tied to the pipe. During the charging operation, the emulsion explosive and the detonator are loaded into the charging pipe outside the hole, and then the charging pipe is gradually pressed down through the propulsion pipes to the bottom of the blast hole. Then, all the propulsion pipes are pulled out for standby using the rope of the first-section propulsion pipe. Step 4.4, wiring operation: Select a rope with excellent elasticity, toughness, and tensile strength and tie it to the blasting wire, ensuring that the rope is slightly shorter than the blasting wire. At least one detonator is set in each blast hole, and the blasting wires of all detonators are connected in a designed network mode and then connected to a main wire. The quality of the main wire and the rope tied to it should be significantly higher than that of ordinary blasting wires and ropes, with excellent water resistance, corrosion resistance, and tensile strength, and ensure repeated use. Step 4.5, drilling shift: After the charging and wiring operations are completed for each drilling hole, move the drill rig on the drill rig tracks (4, 6) to the next designed hole position. Repeat the above drilling, charging, wiring operations and drilling shift until all the designed hole positions within the drill rig tracks of the first row of construction sections (301) are constructed.

5. The method for rigidly connecting two vessels in series for reef blasting construction in inland waterways according to claim 1, characterized in that, The specific working process of step 5 is as follows: Start the shore-side winch on the No. 1 drill and blast workboat to tighten the first bow inner eight-strand cable (105) and the first stern inner eight-strand cable (107); the shore-side winch on the No. 2 drill and blast workboat tightens the second stern inner eight-strand cable (201). At the same time, start the riverside winch on the No. 1 drill and blast workboat to loosen the first bow outer eight-strand cable (109), the first stern outer eight-strand cable (111), and the riverside winch on the No. 2 drill and blast workboat to loosen the second stern outer eight-strand cable (203), so that the No. 1 drill and blast workboat and the No. 2 drill and blast workboat are translated towards the shore side to the second row of construction sections (302). Repeat step 4 to carry out the drilling, charging, and wiring operations on the second row of construction sections (302). Repeat step 4 to drill the construction sections (303, 304... n) until the drilling, charging, and wiring operations of all the construction sections of a blasting batch are completed.

6. The method for constructing reef blasting by rigid series connection of two ships in inland waterway according to claim 1, characterized in that The specific working process of step 6 is as follows: Start the stern winch on the No. 2 drill and blast workboat to tighten the back cable (205) to generate a force in the downstream direction. At the same time, start the bow winch on the No. 1 drill and blast workboat to loosen the main cable, so that the No. 1 drill and blast workboat and the No. 2 drill and blast workboat move downstream to the safety zone. While the drill and blast workboats are moving, the blasting wire and the tying rope are put in, keeping them always in a slack state. The specific working process of step 7 is as follows: After all the ships and personnel within the safety warning area are evacuated, carry out the detonation operation. The specific working process of step 8 is as follows: Start the bow winch on the No. 1 drill and blast workboat to tighten the main cable (101) to generate a force in the upstream direction. At the same time, start the stern winch on the No. 2 drill and blast workboat to loosen the back cable, so that the No. 1 drill and blast workboat and the No. 2 drill and blast workboat return upstream to the next construction area.

7. The method for rigidly connecting two vessels in series for reef blasting construction in inland waterways according to claim 2, wherein The double-ship fixing system includes a first fixing plate (801) and a second fixing plate (802) fixed on the No. 1 drill and blast workboat. The first fixing plate (801) is hinged to a third fixing plate (803) fixed on the No. 2 drill and blast workboat through a first bolt (901); the second fixing plate (802) is hinged to a fourth fixing plate (804) fixed on the No. 2 drill and blast workboat; and four mooring bitts at the stern of the No. 1 drill and blast workboat and the bow of the No. 2 drill and blast workboat are tied and fixed together by using a mooring rope (10) in a cross method to realize the synchronous movement of the two drill and blast workboats.

8. The method for rigidly connecting two vessels in series for reef blasting construction in inland waterways according to claim 2, characterized in that, For a river with navigation requirements during construction, after setting the first bow outboard slanting rope (109), the first stern outboard slanting rope (111) and the second stern outboard slanting rope (203) in the above steps 1 and 2, the water depth above the ropes crossing the waterway shall meet the navigation requirements of ships. The length L between the first anchoring point (102) and the fixing point (104) of the main cable of the No. 1 drill and blast workboat and the fifth anchoring point (206) of the back cable (205) of the No. 2 drill and blast workboat is controlled by the following formula: L≥L1 + (L2 + L3) + L4 + L5 + L6 (1) L4 = m×L7 (2) L7 = L2 + L3 - a1 - b1 (3) Where: L1 is the shortest distance between the No. 1 drill and blast workboat and the first anchoring point (102); L2 and L3 are the designed ship lengths of the No. 1 drill and blast workboat and the No. 2 drill and blast workboat respectively, L4 is the length of the construction area after one-time anchoring and positioning, m is the number of construction areas for one-time drilling and blasting operation of the drill and blast workboat, L5 is the distance between the downstream boundary of the construction area and the boundary of the safety area, L6 is the shortest distance between the No. 2 drill and blast workboat and the fifth anchoring point (206), a1 is the shortest distance between the drill track of the No. 1 drill and blast workboat and the bow, and b2 is the shortest distance between the drill track of the No. 2 drill and blast workboat and the stern; The distances N between the second anchoring point (110) and the third anchoring point (112) of the No. 1 drill and blast workboat and the fourth anchoring point (204) of the No. 2 drill and blast workboat and the outermost side of the construction area are controlled by the following formula: N ≥ L10 + N1 (4) Where: L10 is the designed ship width of the drill and blast boat; N1 is the shortest distance between the outboard anchor winch of the drill and blast workboat and the anchoring point; In the above step 5, the number of construction sections shall be controlled according to the actual project according to the total blasting charge, but the time from charging to detonation operation shall not exceed 12 hours.

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